• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. A DEVICE FOR PERFORATION OF DRILLING WELLS, containing charges in hermetic shells with shanks whose diameter is smaller than the diameter of the charge, the body formed by a series of sequentially installed sections, whose flat edges are offset at an angle relative to its longitudinal axis and in each of the flat edges bore hole of a charge-mounted charge installed in the All-Union Itj V ITff ... 13 13 TU -.- VJ iHKJlJsyfigJfA perpendicular to the corresponding flat face, detonation means controlled electrically and connected to the charges l their ignition ,. characterized in that, in order to obtain perforated perforation density, an additional hole for the explosive charge tail is made in each flat face, and the distance in the longitudinal direction between the hole centers of each flat face is less than the maximum explosive charge diameter perpendicular to its axis, and charge charges are mounted on i of each flat face in radially SL of opposite directions. 2. The device according to claim 1, characterized in that, in order to be able to be used in wells of different diameters, it is provided with removable inserts for the shanks of explosive charges mounted in the openings of the flat faces. Priority points: from 12.08.80 on p. 1 10.02.81 on p. 2. Ate
    公开号:SU1195915A3
    申请号:SU813315599
    申请日:1981-08-06
    公开日:1985-11-30
    发明作者:Поттиер Ален；Шеснель Пьер；Шэнтро Бернар
    申请人:Шлюмбергер Оверсиз С.А. (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to a device for perforating boreholes for the purpose of putting them into operation.
    The aim of the invention is to obtain a higher perforation density and to ensure that the device can be used in wells.
    PERSONAL DIAMETER.
    .In FIG. 1, Ie |) b14 there is a device for perforation of% of 15 wells, general view; Fig 2; - a device for perforation on an enlarged scale and with partial cuts; FIG. 3 is a section A-A in FIG. 2; in fig. 4 - body section; Fig. 5, a housing for explosive charges, isometric view; Fig. 6 shows explosive charge, longitudinal section; FIG. 7, view B in FIG. 6 (charge charge in the shell); Fig. 8 - removable insertion under the shanks of explosive charges, section; Fig, 9 is a section bb In Fig, 8; Fig. 10 shows the charge housing and the shank. After the device has tripped, a cross section,
    A perforation device 1 (FIG. 1) suspended on cable 2 is located inside borehole 3c of a casing string 4 passing through formations 5. In order to operate any zone containing hydrocarbons, it is necessary to prepare said zone to create gravel packing and punch a large number of large-diameter holes in this zone. The perforation device is fastened in a conventional cable terminator 6 by means of a device 7 for detecting the joints of pipes, which allows a precise definition of the depth. The perforation device 1 consists of an upper head 8, an adapter 9, one or several connecting nodes 10, one or several bodies 11 for explosive charges 12 and one lower end part 13,
    As shown in FIG. 2, the upper head 8 of a cylindrical shape has a screw thread 14, which allows it to be fixed in the lower end of the device 7 for detecting the joints of pipes. An electric switch 15, mounted in isolation and hermetically in the axis of the head, is connected to the insulated wire 16 by its lower part. The head 8 is fixed by means of, for example, bolts 17 to re-959152
    The adapter 9, which is a sleeve 18, is eccentrically welded to the plate 19. The side stiffeners 20 are welded between the sleeve 18 and the plate 19. Preferably, the head 8 is located eccentrically in the borehole so that the device 7 for detecting the joints of pipes is adjacent to the wall
    About casing string 4 and gave a good signal. Plate 19 is connected
    with the housing 11 through the connecting node 10,
    Node 10, represented more than J5 in detail in FIG. 3, consists of two half-carcasses 21 and 22, interconnected with screws 23, Each half-carcase (for example, 21) is formed by an angled segment with
    The 20 rounded wings, to which the square spar 24 is welded, in such a way that after joining the two half-rams, it is possible to have a limited
     the angular movement of the head 8 relative to the housing 11. On each half-shell there is also a transverse protrusion 25 on which a detonating cord or
    30 sub relay and electrical wires,
    The housing 11 (FIGS. 4 and 5) is formed by a series of sections, the flat faces of which are displaced relative to its longitudinal axis at an angle of 90 relative to each other, and in each of the flat edges there are two mounting holes 26 and 27 arranged one below the other and
    40 accommodating the backs of explosive charges 12 in them. Each hole (for example, 26) has two transverse holes 28 and 29 and two oblique flats 30 and 31, which prevent
    45 turn the corresponding charge
    around its axis. The distance d between the centers of the two mounting holes 26 and 27 of the same section is much less than the maximum diameter of the burglar.
    50 of the charge measured perpendicular to the axis of the charge, which ensures a high density of the charge. Explosive charges are installed in radially opposite directions on the bout side of the section. It is preferable that the distance between the holes 26 and 27 be minimal, but leave between them a strip of metal sufficient to ensure reliable attachment of the charges.
    In the embodiment of the device, the distance d was about 2 cm for charges of about 5 cm in diameter, and the width of the metal strip between the two holes was 8 mm.
    Housing 11 (Fig. 5) is made of steel pipe of a suitable diameter (4 cm in the above example), flattened in two radial directions, with the result that sections with flat edges are formed. To this end, the pipe is placed under the press to flatten one section with an effort of about 100, then push the pipe forward for a length of one section, turning it 90 about its axis, and flatten the other section. After that, punch holes through the punch.
    Before installing the charge-borne charges into the mounting holes of the housing 11, the first detonating cord 32 in the slot 33 of the first series of explosive charges, which includes the upper charges of each section, and the second detonation cord 34 in the slot 33 of the second series are placed (Fig. 2). charges, which includes the second (lower) charge of each section. Each detonating cord 32 and 34 is coiled around housing 11 and extended down to the break relay 35. The break relay 35 is connected to the detonator 37 by another detonating cord 36 and is designed to simultaneously ignite both cords 32 and 34. In the detonator 37 there are two electric igniters the wires 38 and 39, going up along the housing 11 and connected one with the insulated wire 16, and the other with the second wire 40 connected to ground. Detonator 37, detonating cords, and then chargeless charges 12 are charged by supplying an electric current of appropriate power between the switch 15 and ground through the cable 2.
    It is preferable that the sub-bear be carried out from the bottom up. In the other direction of the detonation, a partial misfire of the device can lead to the accumulation of debris on the bottom, not activated charges, in
    As a result, the device may jam in the casing when it is raised to the surface.
    To pierce the holes on the large dpine, several bodies 11 can be jagged together with the help of connecting nodes 10. In order for both cords 32 and 34 to detonate simultaneously, at the level of each
    The connecting node 10 installs a sub-relay, which at the beginning of each housing 11 synchronizes the detonation of these two cords. The housing 11 is connected to the bottom
    the end piece 13 by means of a connecting unit 41, identical to the unit 10 in FIG. 3. The end piece 13 is a tube 42, flattened at the top with
    to get a flat binder
    section 43, which can be inserted into the connecting node 41. Windows 44 are made in the pipe, and a cork 45 is welded to its lower end.
    The three pins 46 are welded at their ends to the top and bottom of the pipe 42 so that their middle parts are remote from the axis and serve to center the bottom of the device in the crown
    casing. Detonator 37 is located inside pipe 42. Each of the explosive charges 12 (Figs. 6 and 7) includes a metal core. Pus 43 charge and ceramic
     44, hermetically sealed
    on the case. The charge body 47 is made of metal so as to be firmly fixed to the housing. Krishka is made of burned alumina and explodes into small fragments. In case 47, with the axis BB, there is an explosive block 49, the front side of this block has a concave shape
    and covered with a metallic coating 50.
    On charge body 47, there is a shank 51 or a small cross-section leg connected to the cylindrical front part 48 by the section 52 having the shape of a truncated cone. On
    the shank 51, whose cross section is determined by the cross section of the mounting holes, has two opposite flats 52 and 53. In the body of the shank 51 is made
    a slot 54 for passing the detonating cord; and a transverse hole 55 for the locking pin. Preferably, slot 54, which is 5
    continued to the most intermediate part in the shape of a truncated cone 52, was inclined by about 45 relative to the plane of the bald spots 52 and 53.
    The charge housing is manufactured by stamping, i.e. by the method of plastic deformation of a steel cylinder under the action of a punch, displaced with the necessary force in the direction of the axis of the body. As a result of this, a body with anisotropic mechanical strength is obtained, i.e. strength higher in the direction of the BB axis of the charge than in the direction perpendicular to this axis. Thus, under the action of an explosion, the body of charge 47 collapses along longitudinal lines and, as it were, opens, a departure from the axis, but remains fixed on the shank 51, as shown in FIG. ten.
    The steel used must have sufficient strength and deformability sufficient to not break apart into pieces under the action of an explosion. Good results were possible with non-brittle steel types XC 32 F XC 18 F, 20 MV5. Appropriate heat treatment can improve the quality of the selected steel.
    The perforation device shown in FIG. 2 is adapted to a specific series of casing, for example, pipes with an external diameter of 17.8 cm (7 inches). For burning holes in pipes of different diameters, for example pipes with an outer diameter greater than 24.5 cm, the same body 11 is used, but charge charges are attached to it using removable inserts in order to reduce the distance between the collar wall.
    959156
    casing and front surface charges. Such a removable insert 56 shown in FIG. 8 and 9, consists of an annular portion 57, 5 of reinforced thickness, into which the shank 51 of the charge sheath is inserted, the cross section of the removable insert is identical to the section of the fastening holes 26 and 27 on the housing 22.
    In the annular portion 57 there is a transverse hole 58 into which a pin 59 is inserted (Fig. 10), fastening the shank 51 to B with a removable insert 56 having a transverse hole
    15 60 for a stud 61 fastening the removable insert 56 on the housing 11.
    Inside the annular portion 57 there is a cross member 62 entering the slot 54 for the detonating cord,
    20, when a leg of the charge shell is inserted into the removable insert 56. The cross-bar, with its front end, presses the detonating cord to the bottom of slot 54, thus ensuring a good transmission of detonation from the cord to
    explosive. In addition, the presence of a cross member reduces the volume of fluid inside the removable insert. Without a cross member, a removable rate would contain a significant amount of liquid that would fill the slot dp of the detonating cord. This fluid would transfer detonation from spraying onto the walls of the removable insert,
    as a result, there would be a risk of destruction of the removable insert and a loss in the bore of the shank of the charge shell. In large diameter wells where these removable
    The insert, the described structure allows to significantly reduce the number of fragments remaining in the well.
    FIG. eight
    权利要求:
    Claims (2)
    [1]
    1. DEVICE FOR PUNCHING DRILLING WELLS, containing charges in sealed shells with shanks, the diameter of which is smaller than the diameter of the charge, a housing formed by a series of successively installed sections, the flat faces of which are offset at an angle relative to its longitudinal axis and a hole for the shank is made in each of the flat faces explosive charge installed perpendicular to the corresponding flat face, detonation means, controlled electrically and connected to charges for their ignition, characterized in that, with intact In order to obtain increased perforation density, an additional hole is made in each flat face for the tail of the explosive charge, and the distance in the longitudinal direction between the centers of the holes of each flat face is less than the maximum diameter of the explosive charge along the perpendicular to its axis, and the explosive charges are installed on each flat faces in radially ~ opposite directions.
    [2]
    2. The device pop. 1, characterized in that, in order to ensure the possibility of using it in wells of various diameters, it is equipped with removable inserts for shanks of explosive charges installed in the holes of flat faces.
    Priority on points: 12'.08.80 on π. 1 10.02.81 according to p. 2.
    >
    类似技术:
    公开号 | 公开日 | 专利标题
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    US5088413A|1992-02-18|Method and apparatus for safe transport handling arming and firing of perforating guns using a bubble activated detonator
    US4140188A|1979-02-20|High density jet perforating casing gun
    US2927534A|1960-03-08|Perforating device and method of perforating wells
    US2873675A|1959-02-17|Method and apparatus for detonating explosive devices in bore holes
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    US3101051A|1963-08-20|Apparatus for initiating fractures in earth formations
    US4339947A|1982-07-20|Downhole sampling method and apparatus
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    US2986089A|1961-05-30|Debris-free perforating gun
    US3274933A|1966-09-27|Apparatus for explosive charge drilling
    RU2307237C2|2007-09-27|Device and device member for shaped-charge perforator detonation transfer
    US2947252A|1960-08-02|Shaped charge unit for well perforators
    US2883931A|1959-04-28|Detonator
    同族专利:
    公开号 | 公开日
    OA06881A|1983-04-30|
    NO812604L|1982-02-15|
    EP0046114B1|1984-05-02|
    BR8105085A|1982-04-20|
    AU542939B2|1985-03-28|
    DE3163394D1|1984-06-07|
    ES8206737A1|1982-08-16|
    IE811712L|1982-02-12|
    CA1166954A|1984-05-08|
    EG15404A|1988-03-30|
    AU7361781A|1982-02-18|
    NO158825B|1988-07-25|
    ES504589A0|1982-08-16|
    EP0046114A1|1982-02-17|
    IE51385B1|1986-12-10|
    MX150909A|1984-08-15|
    US4496008A|1985-01-29|
    AR230478A1|1984-04-30|
    NO158825C|1988-11-02|
    US4393946A|1983-07-19|
    CA1166564A|1984-05-01|
    引用文献:
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    US4895218A|1988-10-24|1990-01-23|Exxon Production Research Company|Multishot downhole explosive device as a seismic source|
    US4951744A|1989-08-16|1990-08-28|Schlumberger Technology Corporation|Angularly shaped unitary structured base strip comprised of a specific material adapted for phasing charges in a perforating gun|
    US5095999A|1990-08-07|1992-03-17|Schlumberger Technology Corporation|Through tubing perforating gun including a plurality of phased capsule charges mounted on a retrievable base strip via a plurality of shatterable support rings|
    US5590723A|1994-09-22|1997-01-07|Halliburton Company|Perforating charge carrier assembly|
    US5509356A|1995-01-27|1996-04-23|The Ensign-Bickford Company|Liner and improved shaped charge especially for use in a well pipe perforating gun|
    US5816343A|1997-04-25|1998-10-06|Sclumberger Technology Corporation|Phased perforating guns|
    US6098707A|1998-04-24|2000-08-08|The Ensign-Bickford Company|Perforation gun for well casing|
    US6347673B1|1999-01-15|2002-02-19|Schlumberger Technology Corporation|Perforating guns having multiple configurations|
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    US11225848B2|2020-03-20|2022-01-18|DynaEnergetics Europe GmbH|Tandem seal adapter, adapter assembly with tandem seal adapter, and wellbore tool string with adapter assembly|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8017723A|FR2488648B1|1980-08-12|1980-08-12|
    FR8102547A|FR2499621B2|1981-02-10|1981-02-10|
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