• 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:
    A magnetic signal assembly is described which, when placed around a casing string (100) in a wellbore (200), can provide fluid properties in the annulus (150) surrounding the casing string ( 100). In addition, methods of using the magnetic signaling assembly to verify fluid properties and to indicate the state of the surface well are also disclosed.
    公开号:FR3039587A1
    申请号:FR1656046
    申请日:2016-06-28
    公开日:2017-02-03
    发明作者:Mark W Roberson；Scott Goodwin
    申请人:Halliburton Energy Services Inc；
    IPC主号:
    专利说明:

    Surface Magnetic Wave Effect on Probe Fluid Properties in a Drilling Well
    Background [0001] Natural resources, such as gas, oil and water in a formation or subterranean zone can generally be recovered by drilling a well in the subterranean formation while circulating a fluid. drilling in the wellbore. Following the flow of the drilling fluid, a string of tubes (eg, casing) is lowered into the wellbore. The drilling fluid is then generally circulated downwardly through the interior of the pipe and upwardly through the annulus, which is located between the outside of the pipe and the walls of the wellbore. Then a cementation usually takes place, during which a suspension of cement is placed in the annular space and allowed to harden (ie a sheath) to thus fix the train of tubes to the walls of the wellbore and seal the annular space. During the service life of a well, from drilling to depletion, understanding the evolution of materials in the annulus provides important information about the stability in a wellbore. A variety of sensors, temperature, pressure, pH, etc. are usually placed around or inside the tubing string, all to provide information that can be interpreted and translated into a picture of what is taking place at the bottom of the well.
    Previous attempts to track the annulus composition have proved to be complex and expensive. A method used during drilling is to follow the variations in the composition of the drilling mud. Because drilling mud results in drilling chips from the rock formation, it is possible to check for variations in the rock formation based on the varying composition of the drilling mud. The method comprises an acoustic sensor using a Doppler technique. In this technique, the sound velocity of the fluid within the casing string is measured and the velocity of fluid sound in the annulus is measured. By comparing the two measurements, one can determine the fluid composition in the annular space.
    A better understanding of the various embodiments of the disclosed system and method can be obtained by considering the following detailed description in connection with the drawings.
    PRESENTATION OF THE INVENTION For this purpose, the subject of the present invention is a system for monitoring a material composition of a well intended to be used in a wellbore, comprising: a tubing train located in the wellbore; magnetic nodes capable of producing and receiving surface magnetic waves, the nodes being located in an annular space between the casing string and the wellbore; and a control system adapted to: receive a signal representing a surface magnetic wave pattern received by a magnetic node; and comparing the surface magnetic wave pattern with the known patterns to determine the material through which the surface magnetic waves pass.
    The magnetic surface wave pattern may represent at least the relative electrical permittivity and the relative magnetic permeability pr and the electrical conductivity σ of the material through which the waves pass.
    Each magnetic node can be designed to produce a surface magnetic wave at a frequency of between about 1 Hz and about 20 MHz.
    The control system may include a receiver adapted to receive the signal representing the surface wave pattern and a computer configured to compare the magnetic wave patterns.
    The control system may be outside the wellbore.
    Magnetic nodes may include permanent magnets.
    Magnetic nodes may include electromagnets.
    The magnetic nodes may be spaced from about 1 to about 40 feet (0.3 to about 12 m) along the casing string.
    The magnetic nodes may be designed to produce a surface magnetic wave at a frequency of between about 1 Hz and about 20 MHz.
    The present invention also relates to a method for determining the characteristics of a material in an annular space between a casing string and a wellbore by means of the system described above: - the production of magnetic waves of surface ; the crossing of the magnetic surface waves through a material in the annular space; the reception of the surface magnetic waves; calculating a relative permittivity for the material present in the annular space by comparing the surface waves as received with a magnetic field pattern that would exist if the surface magnetic waves passed through a vacuum; and the correlation of the relative permittivity as measured by the characteristics of a material present in the annular space.
    Surface waves can be produced at a frequency of between about 1 Hz and about 20 MHz.
    This method may further include calculating the relative magnetic permeability of the material present in the annulus and the correlation of the magnetic permeability with the characteristics of the material present in the annulus.
    This method may further include calculating the conductivity of the material present in the annulus and correlating the conductivity with the characteristics of the material present in the annulus.
    Surface waves can be received by a magnetic node placed in the annular space.
    The magnetic surface waves received by the magnetic node may represent a cement or a sealant and where the level of cement can be determined according to the placement of the magnetic node in the annular space.
    The present invention also relates to a method of monitoring the hardening of a sealing material in an annular space between a casing string and a wellbore by means of the system described in paragraphs [0004] and [0005], the method comprising: - producing surface magnetic waves; - the crossing of magnetic surface waves through the sealing material in the annular space; - the reception of surface magnetic waves; - monitoring of surface waves until they reach a stable state; and correlating the stable state of the surface waves with the material of the sealing material.
    The sealing material may be cement.
    The present invention also relates to a method of monitoring the state of a sealant in a wellbore between a casing train and a wellbore by means of the system described in paragraphs [0004] and [0005] ]: - verification of a surface magnetic wave pattern that represents a stable state for the wellbore; - the crossing of a surface magnetic wave through the sealant; comparing the surface magnetic wave pattern after it has passed through the sealant with the stable state pattern; and correlating the variations in the surface magnetic wave pattern to determine the state of the sealant.
    [0010] This method may further include controlling the surface magnetic wave pattern by a magnetic signaling assembly comprising multiple magnetic nodes spaced along the casing string.
    The nodes can be permanent magnets and the surface wave passes continuously through the sealant.
    The magnetic surface wave pattern may represent at least the relative electrical permittivity and the relative magnetic permeability pr and the electrical conductivity σ of the sealant material through which the waves pass. The surface magnetic wave can be produced at a frequency of between about 1 Hz and about 20 MHz.
    The present invention also relates to a system for detecting the composition of an annular space in a wellbore by means of the system described in paragraphs [0004] and [0005], comprising: - at least two magnetic nodes capable of producing and receiving surface magnetic waves; and a control system adapted to: receive a signal representing the surface magnetic wave pattern received by a magnetic node; and comparing the surface magnetic wave pattern with known patterns to ensure the composition in the annulus of the wellbore.
    The magnetic surface wave pattern may represent at least the relative electrical permittivity and the relative magnetic permeability pr and the electrical conductivity σ of the material through which the waves pass.
    The at least two magnetic nodes can be designed to produce a surface magnetic wave at a frequency of between about 1 Hz and about 20 MHz.
    The control system may include a receiver configured to receive the signal representing the surface wave pattern and a computer configured to compare the magnetic wave patterns.
    Magnetic nodes may include permanent magnets.
    Magnetic nodes may include electromagnets.
    Brief Description of the Figures [0013] Figure 1 illustrates an embodiment of an oil platform and a wellbore; Figure 2 shows a sectional view of a casing string in a wellbore; and [0015] Fig. 3 is a representative graph of the magnetic wave effect at different times.
    Detailed Description [0016] The following discussion relates to various embodiments of the invention. The figures in the drawings are not necessarily to scale. Certain features of the embodiments may be exaggeratedly represented in scale or in somewhat schematic form, and some details of conventional elements may not appear for the sake of clarity and brevity. While one or more of these embodiments may be preferred, the described embodiments should not be interpreted or otherwise used as limiting the scope of the description, including the claims. It is to be recognized that the various teachings of the embodiments contemplated hereinafter may be employed separately or in any suitable combination to produce the desired results. In addition, a specialist must understand that the following description has wide application, and the discussion of any embodiment should be only one example of this embodiment, and is not meant to imply that the scope of the description , including the claims, is limited to this embodiment.
    Certain terms are used throughout the description and the following claims correspond to particular features or components. As a specialist will understand, different people may designate the same feature or component by different names. This document is not intended to differentiate between components or features that differ in name but not in structure or function.
    In the following description and in the claims, the terms "including" and "including" are used in an open manner, and therefore should be understood to mean "including but not limited to ... unless otherwise stated". the use of the terms "up", "top", "up", "up-hole", "upstream" or other similar terms shall be construed as the overall formation towards the surface or the surface of a body of water; similarly, the use of "down", "down", "down", "down the hole", "downstream" or other similar terms should be interpreted as broadly in the formation away from the surface moving away from the surface of a body of water, regardless of the orientation of the wellbore. The use of any of the foregoing terms should not be construed as indicating positions along a perfectly vertical axis.
    This description relates to a system for monitoring and understanding the material composition constituting an underground formation. Specifically, this disclosure relates to a wellbore system for monitoring and evaluating materials surrounding a casing string in the annulus between the casing string and the wellbore. This description generally relates to a magnetic signaling system that uses magnetic field variations to differentiate the material compositions present in the wellbore. The system and method described herein provide information to clarify conditions at the bottom of the well.
    According to one embodiment, a magnetic signaling assembly can be used to study the annular space surrounding the casing train and to have an idea of the nature of the surrounding materials and fluids. The magnetic signal assembly can measure surface magnetic waves (i.e., an operating frequency of the magnetic field lines over time) between at least two magnetic nodes and according to the variations of the magnetic fields, Differentiate the material compositions surrounding the casing string. Magnetic surface waves are generally affected by the dielectric properties of fluids and formation. The magnetic measurement technique is also useful in fluid / material identification processes of the annulus surrounding the casing string and for monitoring well degradation or ineffectiveness of cementation.
    Figure 1 shows the example of a platform 50 and a wellbore 200. According to the embodiment shown, a casing train 100 extends along the length of the wellbore 200. A space The annulus 150 is created between the casing string 100 and the wellbore 200. Magnetic nodes 300 are at spaced locations along the casing string 100 in the wellbore 200. The magnetic nodes 300 can be used to evaluate the casing. environment in the annular space 150.
    The magnetic nodes 300 may correspond to any suitable magnetic material or assembly capable of producing surface magnetic waves at the desired frequencies. Suitable magnetic materials include permanent magnets or electromagnets or combinations thereof. The magnetic nodes 300 may be formed from any material recognized in the art including but not limited to ferromagnetic materials, ferrimagnetic materials, neodymium iron boron materials, samarium cobalt materials, ceramic materials. , alnico-based materials or combinations thereof. While electromagnets can produce high intensity magnetic fields, they also require a power supply. On the contrary, permanent magnets do not require power supply and require little or no maintenance. The selection of a suitable magnetic node structure will therefore be influenced by the particular characteristics of the well in which the assembly is to be placed. Among these considerations, there is the distance between the nodes that can affect the best frequency to use, which must also influence the choice of material. According to one embodiment, when using variable fields, for example, an electromagnetic coil may be appropriate.
    With reference to FIG. 2, the casing train 100 and the formation 200 define the annular space 150. Magnetic knots 300, placed along the casing train 100, are designed to be able to transmit the lines. magnetic fields 310 which are received by other magnetic nodes 300. For the permanent magnetic bodies, the field lines are continuous and uninterrupted, and they form closed loops. The magnetic lines are defined to begin on the north pole of a magnet and finally on the south pole of the magnetic body. The relative strength of the magnetic field 310 transmitted between the nodes 300 is affected both by the material / fluid present in the annulus and in the formation 200. The differences between the magnetic waves produced and received are indicative of differences in the composition of the material through which the waves pass.
    The magnetic nodes 300 may be at spaced apart intervals along the casing train. The distance between the nodes will be impacted by the frequency of the magnetic or electromagnetic field. Generally, the lower the frequency, the closer the nodes must be to maintain the desired signal-to-noise ratio. The frequency range can range from 1 to 2 Hz up to about 20 MHz, for example from about 1 to 2 Hz to about 20 MHz, for example from about 1 kHz to about 100 kHz, for example about 10 kHz to about 50 kHz. The magnetic nodes may be spaced from about 1 to about 5 feet (about 0.3 to about 1.5 meters), up to about 40 (12.2 meters). According to one embodiment, the frequency will be between 50 and 500 kHz for a spacing between 25 and 35 feet (7.6 and 10.6 meters).
    The mechanism of energy transport through a support involves the absorption and the re-emission of wave energy by the atoms of the material. When an electromagnetic wave encounters the atoms of a material, the energy of that wave is absorbed. The absorption of energy causes the electrons present in the atoms to undergo vibrations. After a brief period of vibrational motion, the vibrating electrons create a new electromagnetic wave with the same frequency as the first electromagnetic wave. While these vibrations occur for a very short time, they delay the movement of the wave through the medium. When an atom emits the energy of the wave again, the wave passes through a small region of space between the atoms. When the wave reaches the next atom, the electromagnetic wave is absorbed, transformed into electronic vibrations and then re-emitted as an electromagnetic wave.
    The assembly and the methods as described herein are based on the relationship between the magnetic field, the material through which the magnetic field passes and the time required to pass the magnetic field through the material. Several characteristics of the material affect the magnetic field during its crossing. These characteristics cause variations of surface magnetic waves. The modified waves provide information about the composition through which they are passed as they are received by the second magnetic node.
    The material / fluid present in the annular space has an electrical permittivity e The permittivity is the polarization ability of the composition or the material. More specifically, the permittivity is an indication of the ability of the material to resist an electric field. An indication of the permittivity can be obtained by measuring the relative permittivity er. The relative permittivity is a factor whose magnetic field increases or decreases with respect to a vacuum. As shown in FIG. 2, the magnetic surface waves 310 are produced by a node 300 and received by another node 300. The pattern of the magnetic field can be compared to a standard pattern, i.e. the magnetic field pattern that would exist if the two nodes 300 were contained in a vacuum. The difference between these measurements allows a relative permittivity for the material present in the annular space.
    The material / fluid present in the annular space has a magnetic permeability μ. Magnetic permeability is the measurement of the ability of the material to withstand the formation of a magnetic field within it, i.e. that it is the degree of magnetization that a material obtains in response to an applied magnetic field. An indication of the magnetic permeability can be obtained by measuring the relative magnetic permeability μΓ The relative magnetic permeability is the ratio of the permeability of the specific material present in the annular space to the free space permeability (space, free being defined by the magnetic constant).
    The material / fluid present in the annular space has an electrical conductivity σ. Electrical conductivity is the measure of the ability of a material to conduct an electrical current.
    As shown in Figure 2, the magnetic surface waves 310 are produced by a node 300 and received by another node 300. The pattern of the magnetic field can be compared to a standard pattern, i.e. the magnetic field pattern that would exist if the two nodes 300 were contained in a vacuum. The difference between these measurements gives an indication of the properties of the material present in the annular space. According to the relative permittivity, relative magnetic permeability and electrical conductivity data, as a function of frequency, the material (s) contained in the annular space can generally be determined.
    According to another embodiment, according to the same relation, if magnetic nodes 300 are placed along a casing string and the casing string 100 has been cemented on the spot, the material present in the casing string The annular space comprises cement and must be stable and invariable. Thus, during periods of time during the operating life of the well, the magnetic nodes 300 must produce surface magnetic waves 310 which are in a stable state with respect to the frequency response. When a steady-state system begins to show changes in the magnetic wave patterns 310, these variations may indicate well or cement degradation, or other variations to be considered.
    According to an embodiment described here, there is a set of magnetic signaling along the outside of the casing train 100 in a wellbore 200. The signaling assembly comprises magnetic nodes 300 which are attached to the casing string at spaced locations. In one embodiment, the magnetic nodes are attached to each tube in the casing string during assembly of the casing string. While the system is described with reference to the nodes that are attached to the casing string, any method of placing the nodes in the right position in the wellbore is possible.
    In FIG. 3, the relative signal strengths appear schematically as a function of time. The surface waves move through the annular space and the materials present in the annulus until they are recovered by another magnetic node 300. The surface magnetic waves are generally recorded and the characteristics e, μΓ and σ are determined from the signal characteristics as a function of time. Each of the five exemplary materials has a different combination of er, μΓ and σ, and by tracking the variation of the received signal the properties of the annular space can be determined. Two prophetic signals are shown in Figure 3, based on the signal strength as a function of time. The continuous line At is a higher frequency signal, while the discontinuous line B represents a lower frequency signal. According to one embodiment, at least two waves of different frequencies are measured with at least one receiving node. In another embodiment, a single wave is measured using at least two receive nodes.
    According to one embodiment, the pattern of surface waves 310 received by the various magnetic nodes 300 can be recovered and inverted by a control system, which passes them from data signals which represent the composition present in FIG. annular space 150. The control system (not shown) may include analog and / or digital hardware and / or computer program instructions. These computer program instructions may be provided to a versatile computer processor, special computer, ASIC and / or other programmable data processing system. Executed statements can create structures and functions to implement the specified actions.
    The relative force received from at least one node is affected by the fluid present in the annular space 150 and in the properties er, μΓ and σ of the formation 200. When there is a significant difference between er and σ, a surface wave (quasi-transverse wave) can be excited because of the boundary region 270.
    The magnetic nodes 300 can measure and gather information on the surface without recording the information. The magnetic nodes 300 may communicate with the surface of the wellbore in a wired or wireless configuration. Similarly, the node 300 may contain at least one storage device capable of storing and transmitting data or which can store and store data for later reading. The appropriate systems for storing and communicating data are well understood by specialists, but for example they may comprise at least one electronic module comprising, for example, an electronic memory, analog or digital outputs and configurable telecommunication tools.
    Methods of detecting or monitoring the state of a wellbore are described herein. According to one embodiment, methods for detecting the composition present in the annular space around a casing string in a wellbore are described. In another embodiment, methods are also disclosed for monitoring the integrity and performance of a wellbore over a period of time in the life of the well.
    The compositional characteristics of the materials / fluids contained in the annular space between a wellbore and a casing string are evaluated by a method comprising passing surface magnetic waves through the material / fluid to be analyzed. , the reception of magnetic surface waves once they have passed through the material to be analyzed, the comparison of the surface magnetic waves recovered with a standard surface magnetic wave that would have been recovered if the same surface magnetic wave had been passed to through a vacuum, the production of a relative representation based on a signal of the material, and the conversion of the relative representation based on a signal of the material into a relative representation based on a composition of the material.
    According to one embodiment, the standard surface magnetic wave is developed from the information obtained during a well reference analysis that can for example be performed during a sludge flow before cementing the well. According to another embodiment, the standard surface magnetic wave can be developed or continue its development depending on the measurements taken from at least one downhole tool that can be used to follow one or more characteristics of the Training. According to another embodiment, the standard surface magnetic wave can be derived from the same information.
    According to one embodiment, to improve the operating life of the well by reducing costs, it is desirable to monitor and / or evaluate the state of the casing train to be able to perform a quick maintenance and for that the service life is maximized. The integrity of the wellbore and cement can be seriously affected depending on the conditions in the well. For example, cracks in the cement may allow inflow of water while acidic conditions can degrade the cement. According to this embodiment, after cementing the casing string in the wellbore, the surface magnetic waves must reach a stable state. According to this method, an operator can follow the magnetic signaling system to search for any variation of surface magnetic waves. Surface wave variations may be indicative of what takes place in the well, for example, a crack in the cement that will allow water or oil to seep into the annulus. In addition, surface magnetic wave variations can be used to analyze the composition in any failure zone by the methods described herein. Since the variations of the surface magnetic waves are predictive of the surrounding composition, appropriate remedial actions can be taken.
    In another embodiment, the method may be used to evaluate the cement / sealant during placement and curing. During curing of the cement, the surface magnetic waves must vary while the amount of water present in the cement varies. When the cement has fully cured, the surface magnetic waves must be stable. The monitoring of surface magnetic waves should give an indication of the hardening state of the cement. Likewise, these surface magnetic waves can be used to determine the location of the cement or sealant in a wellbore. This is for example useful for determining the location of a cement slurry during the primary cementation of a wellbore. In this embodiment, the composition and thus the surface magnetic waves must vary while the water or mud or oil is displaced by the cement. When we know which node 300 detects cement, it is possible to evaluate the level of cement in the annular space. The same technique can be used to evaluate, for example, the level of other materials in the annulus. Other downstream uses of the described method for determining the composition in a wellbore using magnetic field line variations will be apparent to those skilled in the art.
    In this context, "approximately" corresponds to variations due to experimental errors. It will be understood that all measures are modified by the word "about", whether the word "about" is explicitly indicated or not, unless otherwise stated. For example, the expression "a distance of 10 m" should mean "a distance of about 10 m".
    Although the specific embodiments have been illustrated and described herein, it should be appreciated that any arrangement designed to achieve the same purpose may be substituted by the specific embodiments illustrated. This description is intended to cover all adaptations or variations of various embodiments. Combinations of the aforementioned embodiments, and other embodiments not specifically described herein, will be apparent to those skilled in the art after studying the above description.
    权利要求:
    Claims (28)
    [1" id="c-fr-0001]
    Claims What is claimed:
    A system for monitoring a material composition of a well for use in a wellbore (200), comprising: - a tubing string (100) located in the wellbore (200); magnetic nodes (300) capable of producing and receiving surface magnetic waves, the nodes (300) being located in an annular space (150) between the casing string (100) and the wellbore (200); and a control system adapted to: receive a signal representing a surface magnetic wave pattern received by a magnetic node (300); and comparing the surface magnetic wave pattern with the known patterns to determine the material through which the surface magnetic waves pass.
    [2" id="c-fr-0002]
    2. System according to claim 1, wherein the surface magnetic wave pattern represents at least the relative electrical permittivity er, the relative magnetic permeability μΓ and the electrical conductivity σ of the material through which the waves pass.
    [3" id="c-fr-0003]
    The system of claim 1, wherein each magnetic node (300) is adapted to produce a surface magnetic wave at a frequency of between about 1 Hz and about 20 MHz.
    [4" id="c-fr-0004]
    The system of claim 1, wherein the control system comprises a receiver adapted to receive the signal representing the surface wave pattern and a computer adapted to compare the magnetic wave patterns.
    [5" id="c-fr-0005]
    The system of claim 1, wherein the control system is outside the wellbore (200).
    [6" id="c-fr-0006]
    The system of claim 1, wherein the magnetic nodes (300) comprise permanent magnets.
    [7" id="c-fr-0007]
    The system of claim 1, wherein the magnetic nodes (300) comprise electromagnets.
    [8" id="c-fr-0008]
    The system of claim 6, wherein the magnetic nodes (300) are spaced from about 1 to about 40 feet (0.3 to about 12 m) along the casing string (100).
    [9" id="c-fr-0009]
    The system of claim 8, wherein the magnetic nodes (300) are adapted to produce a surface magnetic wave at a frequency of between about 1 Hz and about 20 MHz.
    [10" id="c-fr-0010]
    A method of determining the characteristics of a material in an annulus (150) between a casing string (100) and a wellbore (200) by means of the system of any one of claims 1 to 9, the method comprising: - producing surface magnetic waves; traversing the surface magnetic waves through a material in the annular space (150); - the reception of surface magnetic waves; calculating a relative permittivity for the material present in the annular space (150) by comparing surface waves as received with a magnetic field pattern (310) that would exist if the surface magnetic waves passed through a empty; and the correlation of the relative permittivity as measured the characteristics of a material present in the annular space (150).
    [11" id="c-fr-0011]
    The method of claim 10, wherein the surface waves are produced at a frequency of between about 1 Hz and about 20 MHz.
    [12" id="c-fr-0012]
    The method of claim 10, further comprising calculating the relative magnetic permeability of the material present in the annulus (150) and the correlation of the magnetic permeability with the characteristics of the material present in the annulus (150). .
    [13" id="c-fr-0013]
    The method of claim 10, further comprising calculating the conductivity of the material in the annulus (150) and correlating the conductivity with the characteristics of the material present in the annulus (150).
    [14" id="c-fr-0014]
    The method of claim 10, wherein the surface waves are received by a magnetic node (300) located in the annular space (150).
    [15" id="c-fr-0015]
    The method of claim 14, wherein the magnetic surface waves received by the magnetic node (300) represent a cement or sealant and wherein the level of cement can be determined according to the placement of the magnetic node (300). in the annular space (150).
    [16" id="c-fr-0016]
    A method of monitoring hardening of a sealant material in an annulus (150) between a casing string (100) and a wellbore (200) by the system of any one of claims 1 to 9, the method comprising: - producing surface magnetic waves; traversing the surface magnetic waves through the sealing material in the annular space (150); - the reception of surface magnetic waves; - monitoring of surface waves until they reach a stable state; and correlating the stable state of the surface waves with the material of the sealing material.
    [17" id="c-fr-0017]
    The method of claim 16, wherein the sealing material is cement.
    [18" id="c-fr-0018]
    18. A method of monitoring the condition of a sealer in a wellbore (200) between a casing string (100) and a wellbore (200) by means of the system of any one of claims 1 to 9: - checking a surface magnetic wave pattern that represents a stable state for the wellbore (200); - the crossing of a surface magnetic wave through the sealant; comparing the surface magnetic wave pattern after it has passed through the sealant with the stable state pattern; and correlating the variations in the surface magnetic wave pattern to determine the state of the sealant.
    [19" id="c-fr-0019]
    The method of claim 18, further comprising controlling the surface magnetic wave pattern by a magnetic signal assembly comprising multiple magnetic nodes (300) spaced along the casing string (100).
    [20" id="c-fr-0020]
    The method of claim 19, wherein the nodes (300) are permanent magnets and wherein the surface wave is continuously traversing the sealant.
    [21" id="c-fr-0021]
    21. The method according to claim 19, wherein the surface magnetic wave pattern represents at least the relative electrical permittivity εΓ, the relative magnetic permeability pr and the electrical conductivity σ of the sealing material through which the waves pass.
    [22" id="c-fr-0022]
    The method of claim 18, wherein the surface magnetic wave is generated at a frequency of between about 1 Hz and about 20 MHz.
    [23" id="c-fr-0023]
    23. A system for detecting the composition of an annulus (150) in a wellbore (200) by means of the system according to any one of claims 1 to 9, comprising: - at least two magnetic nodes (300) capable of producing and receiving surface magnetic waves; and a control system adapted to: receive a signal representing the surface magnetic wave pattern received by a magnetic node (300); and comparing the surface magnetic wave pattern with the known patterns to ensure composition in the annulus (150) of the wellbore (200).
    [24" id="c-fr-0024]
    24. The detection system according to claim 23, wherein the surface magnetic wave pattern represents at least the relative electrical permittivity and the relative magnetic permeability μΓ and the electrical conductivity σ of the material through which the waves pass.
    [25" id="c-fr-0025]
    The detection system of claim 23, wherein the at least two magnetic nodes (300) are adapted to produce a surface magnetic wave at a frequency of between about 1 Hz and about 20 MHz.
    [26" id="c-fr-0026]
    The detection system of claim 23, wherein the control system comprises a receiver configured to receive the signal representing the surface wave pattern and a computer configured to compare the magnetic wave patterns.
    [27" id="c-fr-0027]
    The detection system of claim 23, wherein the magnetic nodes (300) comprise permanent magnets.
    [28" id="c-fr-0028]
    28. The detection system of claim 23, wherein the magnetic nodes (300) comprise electromagnets.
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    同族专利:
    公开号 | 公开日
    NO20172043A1|2017-12-22|
    GB2554602B|2021-02-17|
    GB201719367D0|2018-01-03|
    CA2989302C|2020-06-02|
    GB2554602A|2018-04-04|
    AU2015403379B2|2021-02-04|
    US10534106B2|2020-01-14|
    FR3039587B1|2018-09-28|
    MX2018000169A|2018-03-26|
    US20180188407A1|2018-07-05|
    AU2015403379A1|2017-12-21|
    WO2017019058A1|2017-02-02|
    CA2989302A1|2017-02-02|
    引用文献:
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    EP1717412B1|2005-04-26|2008-01-02|Services Petroliers Schlumberger|A method for electromagnetically measuring physical parameters of a pipe|
    GB2457956B|2008-02-29|2012-03-28|Radiodetection Ltd|System for and method of detecting a buried conductor|
    US8191416B2|2008-11-24|2012-06-05|Schlumberger Technology Corporation|Instrumented formation tester for injecting and monitoring of fluids|
    WO2012122178A2|2011-03-10|2012-09-13|Halliburton Energy Services, Inc.|Magnetostrictive power supply for bottom hole assembly with rotation-resistant housing|
    CN103521750B|2012-07-05|2016-04-13|清华大学|Carbon nanometer tube metal particle composite and comprise the catalyst material of this compound|
    US9249657B2|2012-10-31|2016-02-02|General Electric Company|System and method for monitoring a subsea well|
    US9719343B2|2013-03-15|2017-08-01|Terra Response, Llc|Method and apparatus for passive detection of near-surface human-scale underground anomalies using earth field measurements|
    US9250350B2|2013-06-12|2016-02-02|Halliburton Energy Services, Inc.|Systems and methods for downhole magnetic field measurement|SG11201701017RA|2014-09-11|2017-03-30|Halliburton Energy Services Inc|Rare earth alloys as borehole markers|
    WO2019215551A1|2018-05-07|2019-11-14|King Abdullah University Of Science And Technology|Well monitoring with magnetic tool|
    CN109958432B|2019-02-26|2021-11-02|中国石油天然气股份有限公司|Method and device for evaluating cementing quality of well cementation II interface by utilizing ultrasonic echo logging|
    法律状态:
    2017-04-12| PLFP| Fee payment|Year of fee payment: 2 |
    2018-03-02| PLSC| Search report ready|Effective date: 20180302 |
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    2019-06-19| PLFP| Fee payment|Year of fee payment: 4 |
    2020-06-19| PLFP| Fee payment|Year of fee payment: 5 |
    2021-06-22| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    IBWOUS2015042630|2015-07-29|
    PCT/US2015/042630|WO2017019058A1|2015-07-29|2015-07-29|Magnetic surface wave effect to probe fluid properties in a wellbore|
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