 SEALING ELEMENT SYSTEM AND WELL HOLE SEALING METHOD
专利摘要:
sealing element system and method of sealing a wellbore. The present invention relates to a downhole tool, the sealing element systems (20) comprise a sealing element (22) having a support system. the support system may include one or more of a first spacer-type ring (32), a second spacer-type ring (34), a third spacer-type ring, a mesh-type ring, and one or more rings of the type of petal. one or more of said components may be disposed at one or both of the upper end and/or the lower end of the sealing member. when compressed, the sealing member (22) is moved radially outwardly to engage an inner wall surface of a wellbore by virtue of compressive forces from the one or more spacer-type ring(s), ring-type mesh, and/or petal-type ring(s). in certain embodiments, the lower end of one or more of the mesh-like ring(s) and/or petal-like ring(s) pivots outward towards the coating and, in certain embodiments, engages the coating to facilitate creation of the fence. 公开号:BR112014027856B1 申请号:R112014027856-3 申请日:2013-05-09 公开日:2021-07-27 发明作者:David S. Bishop；Antonio C. Ruffo；Douglas J. Lehr 申请人:Baker Hughes Incorporated； IPC主号:
专利说明:
Cross reference to related orders [0001] This application claims the benefit of U.S. Application No. 13/472,128, filed May 15, 2012, which is incorporated herein by reference in its entirety. Background Field of Invention [0002] The present invention is directed to sealing element systems for use in a column or work tool disposed in a wellbore to isolate one or more zones of the wellbore from one or more other zones in the wellbore pit. Description of the technique [0003] Referring to Figure 1, the previous sealing element 200 systems include a housing or mandrel 211 with a sealing element 212 disposed therein. Each end of sealing element 212 includes a housing or support 213 to facilitate elastic expansion of sealing element 212 away from mandrel 211 when an axial load is disposed on sealing element 212 at axial load points 214. of the sealing element 212 also includes two recovery elements 215, 216 each of which is shown as two metal petal retrievals having bottom petal retrieval 217 and top petal retrieval 218, or a phenolic retrieval (not shown) which is known in the art. An A Teflon® barrier is also known to be included in the case of a metal petal recovery element. Invention Summary [004] Broadly, the sealing element systems described herein comprise a sealing element having a support system. The support system may include one or more of a first spacer-type ring, a second spacer-type ring, a third spacer-type ring, a mesh-type ring, and one or more petal-type rings. One or more of said components may be disposed at one or both of the upper end and/or the lower end of the sealing element. When compressed, the sealing element is moved radially outwardly to engage an inner wall surface of a wellbore by virtue of the compressive forces of the one or more spacer-type ring(s), ring(s) mesh type, and/or petal type ring(s). In certain embodiments, the lower end of the one or more mesh-type ring(s) and/or petal-type ring(s) rotates outwards towards the coating and, in certain embodiments, engages the coating to facilitate the creation of the seal. Brief Description of Drawings [0005] Figure 1 is a cross-sectional view of a prior art sealing element system. [0006] Figure 2 is a cross-sectional view of a specific embodiment of a sealing element system described here shown in its initial or working position. [0007] Figure 3 is a cross-sectional view of the sealing element system illustrated in Figure 2 shown in its adjusted position. [0008] Figure 4 is a top view of a specific embodiment of a petal-type ring for inclusion in the sealing element systems described here. [0009] Figure 5 is a partial cross-sectional view of the petal-type ring shown in figure 4. [0010] Figure 6 is a partial cross-sectional view of a specific embodiment of a mesh-type ring for inclusion in the sealing element systems described herein. [0011] Figure 7 is a partial cross-sectional view of a specific embodiment of a spacer-type first ring for inclusion in the sealing element systems described here. [0012] Figure 8 is a partial cross-sectional view of a specific embodiment of a second spacer-type ring for inclusion in the sealing element systems described here. [0013] Figure 9 is the portion of a partial cross-sectional view of the second spacer-type ring shown in Figure 8 taken along line 9. [0014] Although the present invention is described in connection with preferred embodiments, it will be understood that it is not intended to limit the present invention to that embodiment. Rather, it is intended to cover all alternatives, modifications, and equivalents as may be included within the spirit and scope of the present invention as defined by the appended claims. Detailed Description of the Invention [0015] Referring now to figures 2-3, the sealing element system 20 is shown in its initial or working position (Figure 2) and its adjusted position (Figure 3). Generally speaking, the sealing element system 20 comprises a sealing element 22 having a recovery or support system (discussed in more detail below), upper support member 18, and lower support member 19, all carried in the Outer wall surface 14 of mandrel 12. Mandrel 12 includes inner wall surface 16 which defines longitudinal axis 11. [0016] The sealing element 22, as well as the components of the support system, the upper support member 18, and the lower support member 19 are tubular members, each having an inner surface determined by an internal diameter that receives the mandrel 12. As will be appreciated by those of skill in the art, the mandrel 12 is a tubular member carried in a casing column (not shown). The mandrel 12 can be attached to the casing string by any device or method known to those skilled in the art. [0017] The sealing element 22 comprises the upper end of the sealing element 21, the lower end of the sealing element 23, the inner wall surface sealing element 24, and the outer wall surface sealing element 26. The sealing member 22 can be formed from any material known to those skilled in the art such as elastomers, rubbers, polymers, or thermoplastics. In a specific embodiment, the sealing element 22 is formed from durometer nitrile 95. Additionally, the sealing element 22 may be of any desired or necessary shape to provide the necessary compression, deformation, or "extrusion" to form the seal with the surface of the inner cladding wall 17 (A figure 3). As shown in Figures 2-3, in a preferred embodiment, the sealing member 22 is formed in the shape of a sleeve. [0018] In the embodiment of Figures 2-9, the inner wall surface sealing element 22 is supported by the ring member 27, and the load ring member 29. The O-ring and load ring members 27 , 29 provide support for sealing member 22 and facilitate expansion of sealing member 22 radially outwardly away from the longitudinal axis 11 of mandrel 12 during movement from the working position (Figure 2) to the working position. adjustment (Figure 3), as well as provide a seal along the surface of the outer wall of the mandrel 14 while working in the well. [0019] Disposed on the surface of the outer wall of the mandrel 14 adjacent to and above the upper end of the sealing element 21 is the first spacer-type upper ring 32, and disposed on the surface of the outer wall of the mandrel 14 adjacent to and below the lower end of the sealing element 22 is the first spacer-type lower ring 52. In the embodiment of Figures 2-9, the first spacer-type upper ring 32 and the first spacer-type lower ring 52 are identical and will be discussed in greater detail with reference to the figure. 7. It should be understood, however, that the first upper and lower spacer rings 32, 52 do not necessarily have to be identical. Nor is it necessary for both to be included as part of the sealing element 20 system. [0020] Disposed on the surface of the outer wall of the mandrel 14 adjacent to and above the first upper ring of spacer type 32 is the second upper ring of the spacer type 34, and disposed on the surface of the outer wall of the mandrel 14 adjacent to and below the first lower ring of the spacer type 52 is the second lower ring of the spacer type 54. In the embodiment of Figures 2-9, the second upper ring of the spacer type 34 and the second lower ring of the spacer type 54 are identical and will be discussed in more detail with in relation to figures 8-9. It should be understood, however, that the upper and lower second spacer rings 34, 54 do not necessarily have to be identical. Nor is it necessary for both to be included as part of the sealing element 20 system. [0021] Disposed on the surface of the outer wall of the mandrel 14 within the upper cavity 35 defined by the second upper ring of spacer type 34 is the third upper ring of the spacer type 36. Disposed on the surface of the outer wall of the mandrel 14 within the cavity The lower lower ring 55 defined by the second lower spacer-type ring 54 is the third lower lower ring of the spacer-type 56. In the embodiment of Figures 2-9, the third upper spacer-type ring 36 and the third lower spacer-type ring 56 are identical. It should be understood, however, that the upper and lower third spacer rings 36, 56 do not necessarily have to be identical. Nor is it necessary for both to be included as part of the sealing element system 20. The upper and lower third spacer rings 36, 56 may be formed from a metal and may have a rectangular cross section (figures 2-3). Alternatively, the third upper and lower spacer rings 36, 56 may be of any other shape, or be formed from any other material, desired or necessary to sufficiently fill the upper and lower cavities 35, 55 and to provide sufficient support for the second rings. upper and lower spacers 34, 54 to facilitate movement of the sealing member 22 from its working position (Figure 2) to its adjusted position (Figure 3). [0022] Arranged on the outer wall surface of the second spacer-type upper ring 103 (figures 8-9) is an upper ring of mesh type 38. Arranged on the outer wall surface of the spacer-type second lower ring 103 (figures 8) -9) is a mesh-type bottom ring 58. As illustrated in figures 2-3, the upper and lower mesh-type rings 38, 58 include tapered sidewalls that receive the upper and lower first spacer rings 32, 52, a portion of the second upper and lower spacer rings 34, 54, and the ends of the upper and lower sealing member 21, 23, respectively. As further shown in Figures 2-3, the upper and lower mesh-type rings 38, 58 also include the opening 84 (Figure 6) within which a portion of the second upper and lower spacer rings 34, 54 are disposed. and within which the third upper and lower spacer rings 36, 56 are disposed, respectively. [0023] Disposed on the surface of the outer wall of the mandrel 14 adjacent to and above the upper ring of mesh type 38 is the first upper ring of the type of petal 40. Disposed on the surface of the outer wall of the mandrel 14 adjacent to and below the ring of the type of mesh 58 is the first lower petal-type ring 60. As illustrated in Figures 2-5, the first upper and lower petal-type rings 40, 60 include tapered sidewalls that receive the portions of the first mesh-type rings. top and bottom 38, 58, respectively. In the embodiment of Figures 2-9, the first petal-like upper ring 40 and the first petal-type lower ring 60 are identical and will be discussed in greater detail in connection with Figures 4-5. It should be understood, however, that the first rings of the upper and lower petal type 40, 60 do not necessarily have to be identical. Nor is it necessary for both to be included as part of the sealing element 20 system. [0024] Disposed on the surface of the mandrel outer wall 14 adjacent to and above the first petal-like top ring 40 is the second petal-like top ring 42. Disposed on the mandrel outer wall surface 14 adjacent to and below the first ring The bottom petal-like ring 60 is the second petal-like bottom ring 62. As illustrated in Figures 2-5, the second top and bottom petal-like rings 42, 62 include tapered sidewalls that receive the portions of the first rings of the upper and lower petal type 40, 60, respectively. In the embodiment of Figures 2-9, the second petal-like upper ring 42 and the second petal-like lower ring 62 are identical and will be discussed in greater detail in connection with Figures 4-5. It should be understood, however, that the second upper and lower petal-type rings 42, 62 do not necessarily have to be identical. Nor is it necessary for both to be included as part of the sealing element 20 system. [0025] Disposed on the surface of the mandrel outer wall 14 adjacent to and above the second petal-like top ring 42 is the third petal-like top ring 44. Disposed on the mandrel outer wall surface 14 adjacent to and below the second ring The lower petal-type ring 62 is the lower third petal-type ring 64. As illustrated in Figures 2-5, the upper and lower third petal-type rings 44, 64 include tapered sidewalls that receive the portions of the second rings of the upper and lower petal type 42, 62, respectively. In the embodiment of figures 2-9, the third upper petal-like ring 44 and the third lower petal-like ring 64 are identical and will be discussed in greater detail with reference to figures 4-5. It should be understood, however, that the upper and lower third petal-type rings 44, 64 do not necessarily have to be identical. Nor is it necessary for both to be included as part of the sealing element 20 system. [0026] Disposed on the surface of the mandrel outer wall 14 adjacent to and above the third petal-like top ring 44 is the fourth petal-like top ring 46. Disposed on the mandrel outer wall surface 14 adjacent to and below the third ring Bottom of the petal-type 64 is the lower fourth ring of the petal-type 66. As illustrated in Figures 2-5, the fourth upper and lower petal-type rings 46, 66 include tapered sidewalls that receive the portions of the third rings of the upper and lower petal type 44, 64, respectively. In the embodiment of figures 2-9, the fourth top petal-like ring 46 and the fourth bottom petal-like ring 66 are identical and will be discussed in greater detail with reference to figures 4-5. It should be understood, however, that the fourth rings of the upper and lower petal type 46, 66 do not necessarily have to be identical. Nor is it necessary for both to be included as part of the sealing element 20 system. [0027] As illustrated in the embodiment of figures 2-3, the first, second, third, and fourth top petal-type rings 40, 42, 44, 46 are "nested" or layered together so that the first ring The top petal-like ring 40 is disposed inside the second petal-like top ring 42, which is disposed inside the petal-like third top ring 44, which is disposed in the petal-like fourth top ring 46. Similarly in In said embodiment, the first, second, third, and fourth lower petal-like rings 60, 62, 64, 66 are "nested" or layered together so that the first lower petal-like ring 60 is disposed within the second lower petal-like ring 62, which is disposed within the third lower petal-like ring 64, which is disposed on the fourth lower petal-like ring 44. [0028] Referring now to Figures 4-5, the first, second, third, fourth upper petal-type rings 40, 42, 44, 46 and the first, second, third, fourth lower petal-type rings 60, 62, 64, 66 are described in more detail. In the various embodiments of the sealing member 20 system described herein, the differences, if any, between one or more of the first, second, third, fourth upper petal-type rings 40, 42, 44, 46 and the first, second, third, fourth lower petal-like rings 60, 62, 64, 66 are directed to the dimensions of each petal-like ring. [0029] The first, second, third, fourth upper petal-type rings 40, 42, 44, 46 and the first, second, third, fourth lower petal-type rings 60, 62, 64, 66 comprise the upper end 71, the lower end 72, and the side wall or side wall surface 73. The side wall 73 is angled outwardly from the upper end 71 to the lower end 72 at an angle 76 so that the opening in the lower end 72 is larger than opening 74 disposed at upper end 71. Angle 76 is in the range from about 13 degrees to about 15 degrees and opening 74 has a diameter substantially equal to the outer diameter of mandrel 12. [0030] The upper end 71 includes the upper end surface 79. In the specific embodiment of Figures 2-9, the upper end surface 79 is angled with respect to the opening 74 so that when the first, second, third, fourth upper petal-type rings 40, 42, 44, 46 and the first, second, third, fourth lower petal-type rings 60, 62, 64, 66 are disposed on the outer wall surface of the mandrel 14, the end surface upper 79 is substantially perpendicular to the longitudinal axis 11 of the mandrel 12. [0031] Disposed within the surface of sidewall 73 are one or more slits 75. Each slit 75 has a width 78 in the range from about (1.270 mm (0.050 inches) to about 1.778 mm (0.070 inches)). Each slit 75 is disposed at an angle 77 from adjacent slits 75. Angle 77 is in the range from about 35 degrees to about 55 degrees. Height 70 is in the range from about (1.651 mm (0.065 inches) to about 3.302 cm (1.300 inches) where the downhole tool is a 12.7 cm (5 inch) bridge plug. [0032] In a specific embodiment, the first, second, third, fourth upper petal-type rings 40, 42, 44, 46 have dimensions such that, when nested or layered together, the upper petal-type ring portion of mesh 38 is not covered by the petal-like first top ring 40, the petal-like first top ring portion 40 is not covered by the petal-like second top ring 42, the petal-like second top ring portion of petal 42 is not covered by the third top ring of the petal type 44, and the portion of the third top ring of the petal type 44 is not covered by the fourth top ring of the petal type 46 (Figure 2). Similarly, in certain embodiments, the first, second, third, and fourth petal-type rings 60, 62, 64, 66 have dimensions such that, when nested or layered together, the lower petal-like ring portion of mesh 58 is not covered by the petal-type first lower ring 60, the petal-type first lower ring portion 60 is not covered by the petal-type second lower ring 62, the petal-type second lower ring portion of petal 62 is not covered by the third lower ring of the petal type 64, and the third lower ring portion of the petal type 64 is not covered by the fourth lower ring of the petal type 66 (Figure 2). [0033] In another specific embodiment, one or more of the first, second, third, fourth top petal-type rings 40, 42, 44, 46 are arranged with respect to each other so that the corresponding slit(s) ) 75 of each of the upper petal-type rings are classified so that the slit(s) of one upper petal-type ring does not line up with the slit(s) of the next petal-type top ring. In a particular embodiment, the slit(s) of each petal-like upper ring are classified in the range from about 20 degrees to about 90 degrees. In another particular embodiment, the slit(s) of each petal-like top ring are classified in the range from about 20 degrees to about 50 degrees. In a specific modality, the slit(s) of each petal-type upper ring are rated about 22.5 degrees with respect to the subsequent petal-type upper ring. [0034] In other embodiments, the first, second, third, fourth lower petal-type rings 60, 62, 64, 66 are classified in the same way as the first, second, third, fourth upper petal-type rings , 40, 42, 44, 46. In still other embodiments, all of the top, first, second, third, fourth petal-type rings, 40, 42, 44, 46 and the first, second, third, fourth petal-type rings. lower petals 60, 62, 64, 66 are classified in this way. [0035] The first, second, third, fourth upper petal-type rings 40, 42, 44, 46 and the first, second, third, fourth lower petal-type rings 60, 62, 64, 66 may be formed of any material known or desired to provide sufficient support for the sealing member 22 during the movement of the sealing member 22 from the working position (Figure 2) to the adjustment position (Figure 3) and to facilitate the creation of a suitable sealing with the inner facing wall surface 17. In a particular embodiment, the upper first, second, third, fourth petal-type rings 40, 42, 44, 46 and the first, second, third, fourth petal-type rings Petal bottoms 60, 62, 64, 66 are formed from a metal such as steel or titanium. [0036] Referring now to Figure 6, the upper and lower mesh type rings 38, 58 are described in greater detail. In the various embodiments of the sealing member 20 system described herein, the differences, if any, between the upper and lower mesh-type rings 38, 58 are directed to the dimensions of each mesh-type ring. [0037] The upper and lower mesh type rings 38, 58 comprise the upper end 81, the lower end 82, and the sidewall or sidewall surface 83. The sidewall 83 is angled outward from the end 81 to the lower end 82 at an angle 89 so that the opening in the lower end 82 is larger than the opening 84 disposed in the upper end 81. The angle 89 is in the range from about 13 degrees to about 15 degrees and opening 84 has a diameter substantially equal to the outside diameter of mandrel 12. [0038] The upper end 81 includes the upper end surface 80. In the specific embodiment of Figures 2-9, the upper end surface 80 is angled with respect to the opening 84 so that when the upper mesh type rings and The lower end 38, 58 are disposed on the surface of the outer wall of the mandrel 14, the surface of the upper end 80 is substantially perpendicular to the longitudinal axis 11 of the mandrel 12. [0039] The lower end 82 includes a bevel 85 disposed at height 87 above the lower end 82 and at an angle 86. Angle 86 is in the range from about 35 degrees to about 55 degrees and height 87 is in the range. range from about 1.016 mm (0.040 inches) to about 1.524 mm (0.060 inches)). Height 88 is in the range from about 3.81 cm (1,500 inches) to about 4.445 cm (1.7500 inches) where the downhole tool is a 12.7 cm (5 inches) bridge plug ). [0040] The upper and lower mesh type rings 38, 58 can be formed of any known or desired material to provide sufficient support for the sealing element 22 during the movement of the sealing element 22 from the working position (Figure 2) to the fit position (Figure 3) and to facilitate the creation of a proper seal with the inner facing wall surface 17. In a particular embodiment, upper and lower mesh type rings 38, 58 are formed from a metal mesh such as steel or titanium. [0041] Referring now to figure 7, the first upper and lower spacer rings 32, 52 are described in greater detail. In the various embodiments of the sealing member 20 system described here, the differences, if any, between the upper and lower first spacer rings 32, 52 are directed to the dimensions of each first spacer-type ring. [0042] The first upper and lower spacer rings 32, 52 comprise the upper end 91, the lower end 92, and the sidewall or sidewall surface 93. The height 95 between the upper end 91 and the lower end 92 is at range from about 3,810 mm (0.150 inches) to about 6,350 mm (0.250 inches). [0043] The side wall 93 is profiled to have a top portion beveled towards the upper end 91 and a bevelled lower portion 96. The bevelled lower portion 96 is disposed at an angle 99 with respect to the inner wall surface of the first top and bottom spacer rings 32, 52. Angle 99 is in the range from about 13 degrees to about 15 degrees. [0044] The lower end 92 is shaped to include a flat portion that intersects the surface of the side wall 93 and an angled portion that connects the flat portion that intersects the surface of the side wall 93 with the second flat portion that intersects with the inner wall surface of the first upper and lower spacer rings 32, 52. Said second flat portion has a width ranging from about 1.270 mm (0.050 inches) to about 1.778 mm (0.070 inches)). The depth 97 of the lower angled portion as measured from the second flat lower end portion 92 to the first flat lower end portion 92 ranges from about 1.651 mm (0.065 inches) to about 2.159 mm (0.085 inches) )). [0045] The opening 94 is defined by an inner wall surface and includes a portion beveled towards the upper end 91. The opening 94 has a diameter that is substantially identical to the outer diameter of the mandrel 12. The upper end 91 includes the upper end surface 90. In the specific embodiment of Figures 2-9, the upper end surface 90 is angled with respect to the opening 94 so that when the first upper and lower spacer rings 32, 52 are disposed in the surface of the outer wall of the mandrel 14, the surface of the upper end 90 is substantially perpendicular to the longitudinal axis 11 of the mandrel 12. [0046] The first upper and lower spacer rings 32, 52 can be formed of any known or desired material to provide sufficient support to the sealing element 22 during the movement of the sealing element 22 from the working position (Figure 2) to the fit position (Figure 3) and to facilitate the creation of a suitable seal with the inner facing wall surface 17. In a particular embodiment, the first upper and lower spacer rings 32, 52 are formed from a elastomer or polymeric material such as polytetrafluoroethylene ("PTFE"). [0047] Referring now to Figures 8-9, the upper and lower second spacer rings 34, 54 are described in greater detail. In the various embodiments of the sealing member 20 system described herein, the differences, if any, between the upper and lower second spacer rings 34, 54 are directed to the dimensions of each second spacer-type ring. The second upper and lower spacer rings 34, 54 comprise the upper end 101, the lower end 102, the outer wall surface 103, and the inner wall surface 104 defining the opening through which the mandrel 12 is disposed. The opening has a diameter that is substantially identical to the outer diameter of mandrel 12. The height 110 from the top end 101 to the bottom end 102 is in the range from about 5.08 mm (0.200 inch to about 6.096 mm (0.240 inch). [0049] The outer wall surface 103 and the inner wall surface 104 are profiled to define cavity 35, 55 (Figure 2-3) when the mandrel 12 is disposed within the opening defined by the inner wall surface 104. Thickness 106 between the outer wall surface 103 and the inner wall surface 104 is in the range from about 2.286 mm (0.090 inches) to about 2.794 mm (0.110 inches). [0050] The outer wall surface 103 includes an upper portion having height 108 in the range from about 2.54 mm (0.100 inch) to about 3.302 mm (0.1300 inch) and an angled lower portion that connects the upper portion with the lower end 102. The angled lower portion of the outer wall surface 103 is disposed at an angle 109 with respect to the upper portion of the outer wall surface 103. The angle 109 is in the range from about 35 degrees at about 55 degrees. [0051] The inner wall surface 104 includes an upper portion that is parallel to the upper portion of the outer wall surface 103, an angled portion that is parallel to the angled portion of the outer wall surface 104, and an interface portion that is substantially parallel to the upper portion of the inner wall surface 104 and which, in the embodiment of Figures 2-9, engages or contacts the outer wall surface of the mandrel 14. As shown in Figures 2, 3, 8, and 9, a angled inner wall surface portion 104 connects the upper inner wall surface portion 104 with the inner wall surface interface portion 104 and the inner wall surface interface portion 104 connects the lower end 102 with the portion. angled inner wall surface 104. The upper portion of inner wall surface 104 has a height 107 in the range from about 2.032 mm (0.080 inches) to about 2.794 mm (0.110 inches). [0052] The inner wall surface interface portion 104 is disposed at an angle 111 with respect to the angled portion of the inner wall surface 104. The angle 111 is in the range from about 35 degrees to about 45 degrees of so that the interface portion is substantially parallel to the longitudinal axis 11 of the mandrel 12 when the third upper and lower spacer rings 34, 54 are disposed on the surface of the outer wall of the mandrel 14. [0053] The second upper and lower spacer rings 34, 54 can be formed from any material known or desired to provide sufficient support to the sealing element 22 during the movement of the sealing element 22 from the working position (Figure 2) to the fit position (Figure 3) and to facilitate the creation of a suitable seal with the inner facing wall surface 17. In a particular embodiment, the second upper and lower spacer rings 34, 54 are formed from of an elastomer or polymeric material such as polyetheretherketone ("PEEK"). [0054] The upper support member 18 and the lower support member 19 may be of any shape desired or necessary to provide transfer of an axial load on the outermost metal petal-type rings 46, 66. As shown in Figures 2 -3, not only the upper support member 18 but also the lower support member 19 are cones. In other embodiments, only an upper support member 18 or lower support member 19 is a cone. In still other embodiments, one or both of the upper support member 18 and/or the lower support member 19 have rectangular cross-sections. In yet another embodiment, one upper support member 18 or lower support member 19 is rectangular in shape and the other upper support member 18 or lower support member 19 is a piston-shaped sleeve. [0055] In a particular embodiment, the upper support member 18 and the lower support member 19 are slidable with respect to one another along the surface of the outer wall 14 of the mandrel 12. In another specific embodiment, an upper support member 18 or lower support member 19 is secured to mandrel 12 against movement. In yet another embodiment, not only the upper support member 18 but also the lower support member 19 are stationary. [0056] The upper support member 18 and the lower support member 19 are rigid members formed from any material known to those skilled in the art, including, but not limited to, glass or carbon-reinforced phenolics or metals such as steel. . In embodiments in which axial load is applied in only one direction, an upper support member 18 or lower support member 19 may be formed of a material that is less strong than the material used to form the cone that is directly receiving the axial load. [0057] In operation, after the sealing element system 20 is disposed within a well hole at the desired depth and location, the sealing element system 20 is actuated in the same way as any other sealing element or element system known to those skilled in the art, such as by applying a force to the upper support member 18 axially in the downward direction in Figures 2-3 while the lower support member 19 is stationary. Said axial load can also be applied in the opposite direction on the lower support member 19 while the upper support member 18 is stationary or in both directions to both the upper support member 18 and the lower support member. 19 with neither upper support member 18 nor lower support member 19 being stationary. Alternatively, a radial force can be applied to the mandrel 12 to radially expand the mandrel 12 and thus compress the lower and upper petal-type rings 40, 42, 44, 46, 60, 62, 64, 66, petal-type rings. recovery mesh 38, 58, and thus the sealing member 22, between the stationary lower and upper support members 18, 19. [0058] Regardless of how the sealing element system 20 is actuated, during actuation, the sealing element 22 is moved radially outward from the longitudinal axis 11 of the mandrel 12. In so doing, the lower end 82 of the rings of the upper and lower mesh type 38, 58 is rotated outwards towards the surface of the inner facing wall 17. Similarly, the lower end 72 of one or more of the lower or upper petal-type rings 40, 42, 44, 46, 60, 62, 64, 66 may also be swiveled out towards the surface of the inner facing wall 17. In certain embodiments, one or both of the lower end 83 of the upper or lower mesh type rings 38, 58 engage with the surface of the inner casing wall 17 to facilitate the creation of a seal. In still other embodiments, one or more lower ends 72 of the lower or upper petal-like rings 40, 42, 44, 46, 60, 62, 64, 66 engage with the surface of the inner skin wall 17 to facilitate the creation of a fence. [0059] It should be understood that the present invention is not limited to the exact details of construction, operation, exact materials, or the embodiments shown and described, modifications and equivalents will be apparent to those skilled in the art. For example, the materials that make up the components and the dimensions of each of the components can be modified as desired or necessary to make the best seal for the target environment. Furthermore, not all of the components described with respect to the embodiments of Figures 2-9 are required to provide adequate sealing against a surface of the inner facing wall 17. Not all of the same components are required to be included in both the top end and the end. bottom of the sealing element. Conversely, the components at the upper end of the sealing element may be different in number, dimension, or order from those at the lower end of the sealing element. [0060] Furthermore, it is to be understood that the term "wellbore" as used herein includes open wellbore, casing, or any other types of wellbore. Additionally, the use of the term “well” should be understood to have the same meaning as “well hole”. Furthermore, in all of the modalities discussed here, upwards towards the well surface (not shown) is towards the top of the Figures, and downwards or to the bottom of the well (the direction that goes away from the surface of the well) is toward the bottom of the Figures. However, it should be understood that tools can have their positions rotated either in the direction of any number of degrees. As such, the tools can be used in any number of orientations easily determinable and adaptable by those skilled in the art. Additionally, modalities having only one or more "upper" component(s) or only one or more "lower" component(s) should not be constructed as requiring said component(s) to be closer to the surface of the well (in case of using “upper”) or be further away from the surface of the well (in case of using “lower”). The present invention is therefore to be limited only by the scope of the appended claims.
权利要求:
Claims (21) [0001] 1. Sealing element system (20) for a downhole tool, characterized by comprising: a mandrel (12) having an outer wall surface of the mandrel; a rigid upper support member (18) operatively associated with the outer wall surface of the mandrel; a rigid lower support member (19) operatively associated with the mandrel below the upper support member (18); a sealing member (22) operatively associated with the outer wall surface of the mandrel between the upper support member (18) and the lower support member (19), the sealing member having an end of the upper sealing member an end of the lower sealing element, an outer wall surface sealing element, and an inner wall surface sealing element; a first spacer-type top ring (32) operatively associated with the mandrel outer wall surface adjacent and above the upper end of the sealing member; a second spacer-type upper ring (34) operatively associated with the outer mandrel wall surface adjacent to and above the first spacer-type upper ring (32), the second spacer-type upper ring (34) having a surface of the mandrel. inner wall of the second spacer-type upper ring (34), an outer wall surface of the second spacer-type upper ring (34), an upper end of the second spacer-type upper ring (34), and an end of the second upper ring of the lower spacer type (34), the first portion of the inner wall surface of the second upper ring of the spacer type (34) being operatively associated with the outer wall surface of the mandrel, and the second portion of the inner wall surface the second spacer-type upper ring (34) and the mandrel outer wall surface defining a first upper cavity; a third spacer-type upper ring operatively associated with the outer wall surface of the mandrel, the third spacer-type upper ring being disposed within the first upper cavity; a mesh-type upper ring partially disposed on the outer wall surface of the second spacer-type upper ring (34) and partially disposed on the outer wall surface sealing member, the mesh-type upper ring having an upper end of mesh-type upper ring having a mesh-type upper ring surface of the upper end defining a mesh-type upper ring upper end opening having a mesh-type upper ring upper end aperture diameter, a end of the upper ring of the lower mesh type, and a surface of the upper ring of the mesh type of the side wall, the surface of the upper ring of the mesh type of the side wall connecting the upper end of the upper ring of the mesh type with the end mesh-type upper ring and defining a mesh-type upper ring lower opening having a mesh-type upper ring opening diameter. or of the lower mesh type, the upper ring opening diameter of the lower mesh type being greater than the upper ring opening diameter of the upper mesh type; and a first petal-like top ring partially disposed on the outer wall surface of the mandrel and partially disposed on the mesh-like top ring surface of the side wall, the petal-like top ring having an upper end of the first top ring of the side wall. petal-type having an end surface of the first top-end petal-like top ring defining an opening of the first top-end petal-like top ring having an opening diameter of the first top-end petal-like top ring, an end of the first top ring of the lower petal-type, and a first side wall surface of the upper ring of the petal-type, the side wall surface of the first upper ring of the petal-type connecting the upper end of the first upper ring of the petal-type with the lower end of the first petal-like upper ring and defining a first opening of the upper ring of the lower petal type having an opening diameter of the first upper ring of the lower petal type, the opening diameter of the first upper ring of the lower petal type being greater than the opening diameter of the first upper ring of the lower petal type. top petal, and the side wall surface of the first top petal-like ring having at least one first top petal-like side wall slit disposed therein. [0002] 2. Sealing element system according to claim 1, characterized in that it additionally comprises: a second petal-type upper ring partially disposed on the surface of the outer wall of the mandrel and partially disposed on the surface of the side wall of the first petal-like top ring, the second petal-like top ring having an upper end of the second petal-like top ring having an upper end surface of the second petal-like top ring defining an upper end opening of the second ring petal-type upper ring having an opening diameter of the upper end of the second upper petal-type ring, an end of the second upper ring of the lower petal-type, and a side wall surface of the second upper ring of the petal-type, the side wall surface of the second petal-type top ring connecting the top end of the second ring s upper petal-type with the lower end of the second upper ring of the petal type and defining an opening of the second upper ring of the lower petal type having an opening diameter of the second upper ring of the lower petal type, the opening diameter of the second upper ring of the lower petal type being greater than the opening diameter of the second upper ring of the upper petal type, and the side wall surface of the second upper ring of the petal type having at least one second side wall slit of the type of upper petal arranged in it. [0003] 3. Sealing element system according to claim 2, characterized in that it additionally comprises: a third top ring of the petal type partially disposed on the surface of the outer wall of the mandrel and partially disposed on the surface of the side wall of the second petal-like top ring, the third petal-like top ring having the top end of the third petal-like top ring having an upper end surface of the third petal-like top ring defining an upper end opening of the third top petal-like ring having an upper end opening diameter of the third top petal-like ring, a lower end of the third top petal-like ring, and a side wall surface of the third top petal-like ring , the side wall surface of the third petal-type upper ring connecting the upper end of the third the upper petal-type ring with the lower end of the third upper petal-type ring and defining a lower opening of the third upper petal-type ring having a lower opening diameter of the third upper petal-type ring, the diameter of lower opening of the third upper petal-like ring being greater than the upper opening diameter of the third upper petal-like ring, and the side wall surface of the third upper petal-like ring having at least one third wall slit upper petal type side arranged on it. [0004] 4. Sealing element system according to claim 3, characterized in that it additionally comprises: a fourth top ring of the petal type partially disposed on the surface of the outer wall of the mandrel and partially disposed on the surface of the side wall of the third petal-like top ring, the fourth petal-like top ring having an upper end of the fourth petal-like top ring having an upper end surface of the fourth petal-like top ring defining an upper end opening of the fourth petal-like top ring having an opening diameter of the upper end of the fourth petal-like top ring, a lower end of the fourth petal-like top ring, and the side wall surface of the fourth petal-like top ring , the side wall surface of the fourth top ring of the petal type connecting the top end of the fourth top ring of the petal type with the lower end of the fourth petal-type upper ring and defining a lower opening of the fourth petal-type upper ring having a lower opening diameter of the fourth petal-type upper ring, the fourth lower opening diameter petal-like top ring being larger than the upper opening diameter of the fourth petal-like top ring, and the side wall surface of the fourth petal-like top ring having at least one fourth petal-like top ring slit. upper petal arranged in it. [0005] 5. Sealing element system according to claim 4, characterized in that the second ring of the upper metal petal type, the third ring of the upper metal petal type, and the fourth ring of the upper metal type top metal petal rings are arranged with respect to each other wherein a portion of the side wall surface of the third ring of the top metal petal type is not covered by the side wall surface of the fourth ring of the top metal petal type, and a portion of the side wall surface of the second ring of the upper metal petal type is not covered by the side wall surface of the third ring of the upper metal petal type. [0006] A sealing element system according to claim 4, characterized in that one or more slits of the first ring of the metal petal type are rated at approximately 22.5 degrees with respect to one or more slits of the second ring of the metal petal type. [0007] 7. Sealing element system according to claim 1, characterized in that the upper ring of the mesh type and the first ring of the upper metal petal type are arranged with respect to each other in which the surface portion of the mesh-type upper ring of the sidewall is not covered by the first ring of the upper metal petal-type. [0008] 8. Sealing element system, according to claim 1, characterized in that it additionally comprises: a first spacer-type lower ring (52) disposed on the surface of the outer wall of the mandrel adjacent to and below the lower end of the sealing element; a second spacer-type lower ring (54) operatively associated with the outer mandrel wall surface adjacent to and below the first spacer-type lower ring (52), the second spacer-type lower ring (54) having a surface of the mandrel. inner wall of the second lower ring of spacer type (54), an outer wall surface of the second lower ring of spacer type (54), an upper end of the second lower ring of spacer type (54), and a lower end of the second spacer-type lower ring (54), a first portion of the inner wall surface of the second spacer-type lower ring (54) being operatively associated with the outer wall surface of the mandrel, and a second portion of the wall surface the inside of the second spacer-type lower ring (54) and the surface of the outside wall of the mandrel defining a first lower cavity; a third lower ring of spacer type disposed on the surface of the outer wall of the mandrel, the third lower ring of spacer type being disposed within the first lower cavity; a mesh-type lower ring partially disposed on the outer wall surface of the first spacer-type lower ring (52) and partially disposed on the outer wall surface sealing member, the mesh-type lower ring having an upper end of the mesh-type lower ring having an upper end surface of the mesh-type lower ring defining an upper end opening of the mesh-type lower ring having an upper end opening diameter of the mesh-type lower ring, a lower end of the mesh-type lower ring, and a side wall surface of the lower mesh-type ring, the side wall surface of the lower mesh-type ring connecting the upper end of the lower mesh-type upper ring with the lower end of the mesh-type lower ring and defining an opening of the lower mesh-type lower ring having an opening diameter of the lower mesh type lower ring, the opening diameter of the lower mesh type lower ring being greater than the opening diameter of the upper mesh type lower ring; and a first petal-like bottom ring partially disposed on the outer wall surface of the mandrel and partially disposed on the side wall surface of the mesh-like bottom ring, the first petal-like bottom ring having an upper end of the first bottom ring of the petal-like ring having an upper end surface of the first petal-like lower ring defining an upper end opening of the first petal-like lower ring having an opening diameter of the first petal-like lower ring upper end, an end bottom of the first bottom petal-like ring, and a side wall surface of the first petal-like bottom ring, the side wall surface of the first petal-like bottom ring connecting the top end of the first petal-like ring bottom with the bottom end of the first petal-type bottom ring and defining an open one of the first bottom petal-type bottom ring having an opening diameter of the first bottom petal-like bottom ring, the opening diameter of the first bottom petal-like bottom ring being greater than the opening diameter of the first bottom ring of the upper petal type, and the side wall surface of the first lower petal type ring having at least one first lower petal type side wall slit disposed therein. [0009] A sealing element system, according to claim 8, characterized in that the surface of the upper ring of mesh type of the upper end is disposed substantially perpendicular to the longitudinal axis of the mandrel. [0010] 10. Sealing element system, according to claim 9, characterized in that each of the upper end surface of the first petal-type top ring, the top end surface of the second top ring of the petal type of petal, the top end surface of the third top petal-like ring, and the top end surface of the fourth top petal-like ring are disposed substantially perpendicular to the longitudinal axis of the mandrel. [0011] A sealing element system according to claim 10, characterized in that the upper end surface of the mesh-type lower ring is disposed substantially perpendicular to the longitudinal axis of the mandrel. [0012] 12. Sealing element system according to claim 11, characterized in that each of the upper end surface of the first petal-type lower ring, the upper end surface of the second lower ring of the petal type petal, the upper end surface of the third lower petal-like ring, and the upper end surface of the fourth lower petal-like ring are disposed substantially perpendicular to the longitudinal axis of the mandrel. [0013] A sealing element system, according to claim 8, characterized in that it additionally comprises: a second petal-type upper ring partially disposed on the surface of the outer wall of the mandrel and partially disposed on the surface of the side wall of the first petal-like top ring, the second petal-like top ring having an upper end of the second petal-like top ring having an upper end surface of the second petal-like top ring defining an upper end opening of the second top petal-like ring having an upper end opening diameter of the second top petal-like ring, one end of the second top bottom petal-like ring, and a side wall surface of the second top petal-like ring , the side wall surface of the second petal-type top ring connecting the top end of the second ring petal-type upper ring with the lower end of the second upper ring of the petal-type and defining an opening of the second upper ring of the lower petal-type having an opening diameter of the second upper ring of the lower petal-type, the opening diameter of the second upper ring of the lower petal type being greater than the opening diameter of the second upper ring of the upper petal type, and the side wall surface of the second upper ring of the petal type having at least one second side wall slit of the type of upper petal disposed on it; and a second lower petal-like ring partially disposed on the outer wall surface of the mandrel and partially disposed on the side wall surface of the first lower petal-like ring, the second lower petal-like ring having a second lower petal-like ring. top end petal having an upper end surface of the second lower petal-like ring defining an upper end opening of the second lower petal-like ring having an upper end opening diameter of the second lower petal-like ring, a second end of the lower petal-type lower ring, and a side wall surface of the second lower petal-type ring, the side wall surface of the second lower petal-type ring connecting the second end of the upper petal-type lower ring with the lower end of the second lower ring of the petal type and defining an opening of the second ring lower petal type bottom ring having an opening diameter of the second bottom ring of the bottom petal type, the opening diameter of the second bottom ring of the bottom petal type being greater than the opening diameter of the second bottom ring of the petal type upper, and the side wall surface of the second lower petal-like ring having at least one second lower petal-like ring side wall slit disposed therein. [0014] 14. Sealing element system, according to claim 13, characterized in that it additionally comprises: a third upper ring of the petal type partially disposed on the surface of the outer wall of the mandrel and partially disposed on the surface of the side wall of the second top petal-like ring, the third top petal-like ring having an upper end of the third top petal-like ring having an upper end surface of the third top petal-like ring defining an end opening top of the third petal-like top ring having an upper end opening diameter of the third petal-like top ring, a lower end of the third petal-like top ring, and a side wall surface of the third top petal-like ring of petal, the side wall surface of the third upper ring of the petal type connecting the upper end of the te. third upper petal-type ring with the lower end of the third upper petal-type ring and defining a lower opening of the third upper petal-type ring having a lower opening diameter of the third upper petal-type ring, the diameter of lower opening of the third upper petal-like ring being greater than the upper opening diameter of the third upper petal-like ring, and the side wall surface of the third upper petal-like ring having at least one third wall slit upper petal-type lateral disposed on the same; and a third lower petal-like ring partially disposed on the outer wall surface of the mandrel and partially disposed on the side wall surface of the second lower petal-like ring, the third lower petal-like ring having an upper end of the third petal-like bottom ring having an upper end surface of the third petal-like bottom ring defining a top end opening of the third petal-like bottom ring having a top end opening diameter of the third petal-like bottom ring. petal, a lower end of the third lower petal-type ring, and a side wall surface of the third lower petal-type ring, the side wall surface of the third lower petal-type ring connecting the upper end of the third ring of the lower petal type with the lower end of the third lower ring of the petal type and defining a opening of the third lower ring of the lower petal type having an opening diameter of the third lower ring of the lower petal type, the opening diameter of the third lower ring of the lower petal type being greater than the opening diameter of the upper lower ring of the upper petal-like, and the side wall surface of the third lower petal-like ring having at least one third petal-like lower sidewall slit disposed therein. [0015] 15. Sealing element system, according to claim 14, characterized in that it additionally comprises: a fourth top ring of the petal type partially disposed on the surface of the outer wall of the mandrel and partially disposed on the surface of the side wall of the third top petal-like ring, the fourth top petal-like ring having an upper end of the fourth top petal-like ring having an upper end surface of the fourth top petal-like ring defining an end opening top of the fourth petal-like top ring having an opening diameter of the top end of the fourth petal-like top ring, a bottom end of the fourth petal-like top ring, and a side wall surface of the fourth petal-like top ring of petal, the side wall surface of the fourth top ring of the petal-type connecting the top end of the fourth top ring r of petal-type with the lower end of the fourth petal-type upper ring and defining a lower opening of the fourth petal-type upper ring having a lower opening diameter of the fourth petal-type upper ring, the lower opening diameter of the fourth top petal-like ring being greater than the upper opening diameter of the fourth top petal-like ring, and the side wall surface of the fourth top petal-like ring having at least one fourth top side wall slit the type of petal disposed on it; and a fourth lower petal-like ring partially disposed on the outer wall surface of the mandrel and partially disposed on the third side wall surface of the lower petal-like ring, the upper petal-like lower ring having an upper end of the fourth ring. petal-like bottom having an upper end surface of the fourth petal-like bottom ring defining an upper end opening of the fourth petal-like bottom ring having an opening diameter of the fourth petal-like bottom ring upper end, a end of fourth lower petal-type lower ring, and a side wall surface of the fourth lower petal-type lower ring, the side wall surface of the fourth lower petal-type lower ring connecting the end of the fourth lower petal-type upper ring with the lower end of the fourth lower ring of the petal type and defining an opening of the fourth lower ring of the lower petal type having an opening diameter of the fourth lower ring of the lower petal type, the opening diameter of the fourth lower ring of the lower petal type being greater than the opening diameter of the fourth lower ring of the upper petal type , and the petal-like fourth lower ring side wall surface having at least one petal-like lower fourth ring side wall slit disposed therein. [0016] 16. Sealing element system (20) for a downhole tool, characterized by comprising: a mandrel (12) having an outer wall surface of the mandrel; a rigid upper support member (18) operatively associated with the outer wall surface of the mandrel; a rigid lower support member (19) operatively associated with the mandrel below the upper support member (18); a sealing member operatively associated with the outer wall surface of the mandrel between the upper support member (18) and the lower support member (19); a mesh-type upper ring comprising a mesh-type upper ring sidewall slanted downwardly to receive an end of the upper portion of the sealing element within the mesh-type upper ring; a mesh-type lower ring comprising a mesh-type lower ring side wall inclined upwardly to receive the lower end of the sealing member portion within the mesh-type lower ring; at least one petal-like top ring having a petal-like top ring side wall and at least one petal-like top ring slit, the petal-like top ring side wall being sloped downwardly to receive a mesh-type upper ring portion; at least one petal-like bottom ring having a petal-like bottom ring side wall and at least one petal-like bottom ring slit, the petal-like bottom ring side wall being sloped upwardly to receive a mesh-type lower ring portion; a first spacer-type upper ring (32) disposed on the outer wall surface of the mandrel between the upper portion of the sealing member and the mesh-type upper ring; a second spacer-type upper ring (34) disposed on the outer wall surface of the mandrel between the first spacer-type upper ring (32) and the mesh-type upper ring, the second spacer-type upper ring (34) comprising a the inner wall surface of the second spacer-type upper ring (34), the inner wall surface of the second spacer-type upper ring (34) and the outer wall surface of the mandrel defining an upper cavity; a third spacer-type upper ring disposed on the surface of the outer wall of the mandrel, the third spacer-type upper ring being disposed within the upper cavity; a first spacer-type lower ring (52) disposed on the outer wall surface of the mandrel between the lower portion of the sealing member and the mesh-type lower ring; a second spacer-type lower ring (54) disposed on the outer wall surface of the mandrel between the first spacer-type lower ring (52) and the mesh-type lower ring, the second spacer-type lower ring (54) comprising a the inner wall surface of the second lower spacer-type ring (54), the inner wall surface of the second lower spacer-type ring (54) and the outer wall surface of the mandrel defining the lower cavity; and a third lower ring of spacer type disposed on the surface of the outer wall of the mandrel, the third lower ring of spacer type being disposed within the lower cavity. [0017] 17. Sealing element system according to claim 16, characterized in that four upper petal-type rings are nested together and four lower petal-type rings are nested together. [0018] 18. Method of sealing a well hole, the method characterized by the fact that it comprises the steps of: (a) actuating the column in a well hole, the column having a sealing element system (20), the sealing element system having a mandrel (12) having the mandrel outer wall surface, a rigid upper support member (18) operatively associated with the mandrel outer wall surface, a lower support member (19 rigidly operatively associated with the mandrel below the upper support member (18), a sealing member operatively associated with the outer wall surface of the mandrel between the upper support member (18) and the support member. lower bracket (19), an upper mesh-type ring comprising a side wall of the upper mesh-type ring inclined downwardly to receive the end of the upper portion of the sealing element within the upper mesh-like ring, at least one top ring of thee petal pole having a petal-like top ring side wall and at least one petal-like top ring slit, the petal-like top ring side wall being sloped downwardly to receive the top petal-like ring portion. of mesh, a first spacer-type upper ring (32) disposed on the surface of the outer wall of the mandrel between the upper portion of the sealing member and the mesh-type upper ring, a second spacer-type upper ring (34) disposed on the outer wall surface of the mandrel between the first spacer-type upper ring (32) and the mesh-type upper ring, the second spacer-type upper ring (34) comprising an inner wall surface of the second spacer-type upper ring ( 34), the inner wall surface of the second spacer-type upper ring (34) and the outer wall surface of the mandrel defining an upper cavity, and a third spacer-type upper ring disposed at the s. surface of the outer wall of the mandrel, the third spacer-type upper ring being disposed within the upper cavity; and (b) applying a load to the mandrel to force the first spacer-type upper ring (32) into the sealing element causing the sealing element to move radially outwardly from a longitudinal axis of the mandrel into an engagement. sealing with an inner wellbore wall surface, and causing the mesh-type upper ring portion to rotate radially outward from the longitudinal axis of the mandrel. [0019] 19. Method according to claim 18, characterized in that the load is applied axially in a first direction along the longitudinal length of the mandrel. [0020] 20. Method according to claim 19, characterized in that the load is additionally applied axially in a second direction along the longitudinal length of the mandrel. [0021] 21. Method according to claim 18, characterized in that the load is applied radially along the longitudinal length of the mandrel.
类似技术:
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同族专利:
公开号 | 公开日 CA2873382A1|2013-11-21| AU2013263189B2|2016-07-28| CN104302868A|2015-01-21| CN104302868B|2017-06-27| AU2013263189A1|2014-11-13| NO20141315A1|2014-12-11| BR112014027856A8|2021-02-23| IN2014DN09042A|2015-05-22| US20130306331A1|2013-11-21| GB2517365B|2019-05-22| RU2598104C2|2016-09-20| GB2517365A|2015-02-18| WO2013173159A1|2013-11-21| NO345815B1|2021-08-23| RU2014150261A|2016-07-10| GB201421755D0|2015-01-21| CA2873382C|2017-06-20| US8839874B2|2014-09-23| BR112014027856A2|2017-06-27|
引用文献:
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法律状态:
2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]| 2020-03-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]| 2021-05-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]| 2021-07-27| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 09/05/2013, OBSERVADAS AS CONDICOES LEGAIS. |
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申请号 | 申请日 | 专利标题 US13/472,128|US8839874B2|2012-05-15|2012-05-15|Packing element backup system| US13/472,128|2012-05-15| PCT/US2013/040298|WO2013173159A1|2012-05-15|2013-05-09|Packing element backup system| 相关专利
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