CN117432391A - Device, system and method for detecting damage magnetism of horizontal well casing - Google Patents
Device, system and method for detecting damage magnetism of horizontal well casing Download PDFInfo
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- CN117432391A CN117432391A CN202311366704.6A CN202311366704A CN117432391A CN 117432391 A CN117432391 A CN 117432391A CN 202311366704 A CN202311366704 A CN 202311366704A CN 117432391 A CN117432391 A CN 117432391A
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- 238000001514 detection method Methods 0.000 claims abstract description 222
- 230000009471 action Effects 0.000 claims abstract description 69
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/006—Detection of corrosion or deposition of substances
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
- E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1057—Centralising devices with rollers or with a relatively rotating sleeve
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/001—Self-propelling systems or apparatus, e.g. for moving tools within the horizontal portion of a borehole
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/08—Measuring diameters or related dimensions at the borehole
- E21B47/085—Measuring diameters or related dimensions at the borehole using radiant means, e.g. acoustic, radioactive or electromagnetic
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/26—Storing data down-hole, e.g. in a memory or on a record carrier
Abstract
The invention describes a device, a system and a method for detecting the damage magnetism of a horizontal well casing. Comprising the following steps: the underground connection nipple, the upper centralizer, the underground power nipple, the first drive control nipple, the first action unit nipple, the data acquisition and transmission nipple, the sleeve loss magnetism detection nipple, the second action unit nipple, the second drive control nipple, the lower centralizer and the sealing nipple are sequentially connected. The magnetic detection device for the damage of the horizontal well casing pipe can be applied to the detection of the damage of the horizontal well casing pipe at the horizontal section of the horizontal well, can be suitable for the working environment of high temperature and high pressure in the horizontal well, has the underground power module and underground driving capability, can autonomously crawl, drive and detect the damage of the casing pipe at the horizontal section of the horizontal well, effectively fills the defects of the existing casing pipe damage detection device in the aspects of stress concentration, early damage detection and the like of the casing pipe of the horizontal well, and can be used for comprehensive quality detection and applicability evaluation analysis of the casing pipe.
Description
Technical Field
The invention relates to the field of casing damage detection, in particular to a device, a system and a method for detecting casing damage magnetism of a horizontal well.
Background
Petroleum casings are key components used in large numbers in oil and gas drilling production, are used for packing stratum, stabilizing well walls, protecting wellbores and providing necessary fluid passages, and are also important barriers for guaranteeing the safety of oil and gas wells. In the actual production and the service process of the petroleum casing pipe, especially in the development process of the horizontal well, the long-distance horizontal well section and the repeated hydraulic fracturing process are adopted, so that the local load of the horizontal well casing pipe can be aggravated by stratum creep deformation and slippage caused by ground stress change, and the horizontal well casing pipe is damaged by deformation, dislocation, corrosion cracking, extrusion and the like. Numerous practices and studies have shown that damage failure of horizontal well casing has exhibited abnormal characteristics of localized stress concentration in its early stages of development.
When the oil well needs to detect the sleeve parameters through the detection instrument, the vertical well is usually penetrated into a target section downwards by the self weight of the instrument and is detected in the lifting process of the detection instrument, however, with the application and popularization of the horizontal well technology, the number of the horizontal wells at home and abroad is greatly increased, but the detection and downhole operation of the horizontal well are very difficult, and the main reasons are that the traditional sleeve detection cannot reach the corresponding position of the horizontal section by the self weight method of the instrument, and the longer the horizontal section is, the more the corresponding conveying difficulty is. Therefore, the logging instrument needs to have the capability of driving and crawling the horizontal section of the well, and can send the detection instrument to the target position.
The existing horizontal well tractor and casing damage detector belong to two independent modules, only the traction force needs are considered in the actual production process, the overall length of the tractor and logging instrument string is too long, the instrument arrangement is not compact enough, and the situation of insufficient trafficability of a bending section is easily encountered when the horizontal well casing with larger borehole curvature is detected.
Disclosure of Invention
The present invention has been made in view of the above problems, and it is an object of the present invention to provide a device, system and method for detecting the damage of a casing of a horizontal well, which overcomes or at least partially solves the above problems.
In a first aspect, an embodiment of the present invention provides a device for detecting damage magnetism of a horizontal well casing, including: the underground connecting nipple, the upper centralizer, the underground power nipple, the first driving control nipple, the first action unit nipple, the data acquisition and transmission nipple, the sleeve loss magnetic detection nipple, the second action unit nipple, the second driving control nipple, the lower centralizer and the sealing nipple are sequentially connected; wherein:
the underground connecting nipple is provided with one end for connecting a logging cable; the other end is connected with an upper centralizer;
the underground power nipple is electrically connected with the underground connecting nipple, the upper centralizer, the first driving control nipple, the first action unit nipple, the data acquisition and transmission nipple, the sleeve loss magnetic detection nipple, the second action unit nipple, the second driving control nipple and the lower centralizer to serve as an underground power supply for supplying power;
The first action unit nipple and the second action unit nipple are used for the traveling movement of the horizontal well casing damage magnetic detection device;
the first action unit nipple, the second action unit nipple includes: the driving unit comprises a short section shell, a driving motor, a clutch, a transmission gear set, a driving arm and driving wheels; the driving motor and the clutch are arranged in the short section shell of the driving unit; the power input end of the transmission gear set is connected with the output end of the driving motor, and the power output end of the transmission gear set is connected with the driving arm and the driving wheel; the driving wheel is arranged at the tail end of the driving arm.
In one embodiment, the downhole power sub comprises a power circuit module;
the two ends of the power circuit module are sealed by using high-pressure sealing plugs, and a through hole for connecting a wire of the power circuit module is arranged in the center of each high-pressure sealing plug.
In one embodiment, the first driving control nipple and the second driving control nipple are respectively used for controlling the working states of the driving motors in the first action unit nipple and the second action unit nipple, and controlling the motion states of the driving wheel and the driving arm.
In one embodiment, the casing damage magnetism detection nipple comprises:
A magnetic memory sensor and a dynamic angle sensor; the device is used for collecting the signal data related to the detection of the damage of the sleeve;
the data acquisition and transmission nipple is used for controlling the working states of the magnetic memory sensor and the dynamic angle sensor and storing and summarizing and transmitting the signal data related to the casing damage detection.
In one embodiment, the upper and lower centralizers include:
the upper centralizer includes: the upper centralizer shell, the at least one pair of centralizer arms and the at least one pair of centralizer wheels are fixedly connected with the centralizer shell and the centralizer wheels through pin shafts, the centralizer arms can be opened or contracted, and the centralizer wheels are pressed to the inner wall of the sleeve when opened so as to support the detection device and ensure that the detection tool is concentric with the sleeve; the centralizer wheel is fixedly connected with the centralizer arm;
the lower centralizer includes: the lower centralizer shell, the at least one pair of centralizer arms and the at least one pair of centralizer wheels are fixedly connected with the centralizer shell and the centralizer wheels through pin shafts, the centralizer arms can be opened or contracted, and the centralizer wheels are pressed to the inner wall of the sleeve when opened so as to support the detection device and ensure that the detection tool is concentric with the sleeve; the centralizer wheel is fixedly connected with the centralizer arm.
In one embodiment, the sealing nipple comprises:
the anti-collision head is used for installing an anti-collision head so as to prevent the horizontal well casing from damaging the magnetic detection device from being damaged by underground collision; the beam converging circuit is axially provided with a sealing ring for sealing.
In one embodiment, the downhole connection sub comprises:
the tension measuring device comprises a rotary joint, a universal joint and a tension measuring nipple; the rotary joint is connected with the tension measurement nipple through a universal joint; and through holes are formed in two ends of the rotary joint and are used for connecting logging cables.
In one embodiment, the upper centralizer is threadably connected to the downhole connection sub; the downhole power nipple is connected with the upper centralizer through threads; the first driving control nipple is connected with the downhole power nipple through threads; the first action unit nipple is connected with the first drive control nipple through threads; the data acquisition and transmission nipple is connected with the first action unit nipple through threads; the sleeve loss magnetic detection nipple is connected with the data acquisition and transmission nipple through threads; the second action unit is connected with the sleeve loss magnetism detection nipple through threads; the second driving control nipple is connected with the second action unit nipple through threads; the lower centralizer is connected with the second driving control nipple through threads; the sealing nipple is connected with the lower centralizer through threads.
In a second aspect, an embodiment of the present invention provides a system for detecting damage to a casing of a horizontal well, the system comprising: the ground control system and the horizontal well casing damage magnetic detection device are as described above;
the ground control system is used for transmitting instructions to the horizontal well casing damage magnetic detection device, and processing and displaying return signals.
In one embodiment, the system as described above further comprises: the ground data acquisition system; and the device is used for summarizing detection data returned by the horizontal well casing damage magnetic detection device, drawing a casing damage distribution cloud chart and evaluating casing damage risk.
In a third aspect, an embodiment of the present invention provides a method for detecting a damage to a horizontal well casing by using the device for detecting a damage to a horizontal well casing according to claim 1, including:
according to the instruction sent to the horizontal section issued by the ground control system, controlling the horizontal well casing damage magnetic detection device to be sent to the appointed position of the horizontal section of the well;
if an instruction sent to a position to be detected by a ground control system is received, or a first delay time is preset to reach after the detection device reaches a specified position of a horizontal section, controlling the underground power nipple, the upper centralizer, the lower centralizer, the first action unit nipple, the first drive control nipple, the second action unit nipple and the second drive control nipple to work, so that the horizontal well casing damage magnetic detection device reaches the position of the starting point to be detected;
If a detection starting instruction sent by a ground control system is received or a second delay time is reached after the detection device reaches a start point position to be detected, controlling the data acquisition and transmission nipple and the sleeve loss magnetic detection nipple to work so as to detect the damage of the casing of the horizontal well;
when the horizontal well casing damage magnetic detection device reaches a preset end position to be detected, the horizontal well casing damage magnetic detection device is controlled to stop working according to a detection ending instruction sent by a ground control system or according to a third delay time after the detection device reaches the end position to be detected.
In one embodiment, the method as described above further comprises:
if the instruction sent to the position to be detected by the ground control system is received, or the detection device reaches the designated position of the horizontal section, the first delay time is preset, and the data acquisition and transmission nipple and the sleeve loss magnetic detection nipple are controlled to work so as to detect the damage of the casing of the horizontal well.
In a fourth aspect, embodiments of the present invention provide a computing device comprising: the device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the detection method by using the horizontal well casing damage magnetic detection device.
In a fifth aspect, embodiments of the present invention provide a computer readable storage medium storing a computer program which when executed by a processor implements a method of detection using a casing damage magnetic detection device such as a horizontal well as described above.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the embodiment of the invention provides a device, a system and a method for detecting the damage magnetism of a horizontal well casing. The device comprises: the underground connection nipple, the upper centralizer, the underground power nipple, the first drive control nipple, the first action unit nipple, the data acquisition and transmission nipple, the sleeve loss magnetism detection nipple, the second action unit nipple, the second drive control nipple, the lower centralizer and the sealing nipple are sequentially connected. According to the embodiment of the invention, the underground power nipple is used for supplying power to the underground driver and the detection instrument, the device is simple and easy to operate, compared with the wellhead which is used for supplying power to the underground motor in a cable transmission mode, the voltage loss in the cable power supply transmission process is avoided, the research and development and detection cost of the device is reduced, the underground power nipple is easy to replace and maintain, and the reliability and stability of the device are improved.
In addition, the driving wheel is controlled by the independent driving motor, and the detector can continuously, stably and uniformly acquire data in the detection process in a reciprocating motion in a horizontal section, so that the detection precision and reliability are higher.
The data of the detector in the embodiment of the invention can be stored in the memory of the data acquisition and transmission nipple, the data acquisition system for transmitting the detection data to the ground by using the data acquisition and transmission nipple can perform online detection and offline detection, and the post-processing software can realize rapid detection analysis and risk evaluation of the damage state of the horizontal well casing, thereby being beneficial to field application and management and control.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a block diagram of a device for detecting damage to a casing of a horizontal well according to an embodiment of the present invention;
FIG. 2 is a block diagram II of a device for detecting damage to a casing of a horizontal well according to an embodiment of the present invention;
FIG. 3 is an overall assembly diagram of a device for detecting damage to a horizontal well casing according to an embodiment of the present invention;
FIG. 4 is a logic diagram I of the operation control of a device for detecting the damage magnetism of a horizontal well casing according to an embodiment of the present invention;
FIG. 5 is a second logic diagram of operation control of a device for detecting damage to a casing of a horizontal well according to an embodiment of the present invention;
FIG. 6 is a diagram of a driving wheel structure of a device for detecting casing damage magnetism of a horizontal well according to an embodiment of the present invention
Fig. 7 is a flowchart of a method for detecting a damaged magnetic detection device of a horizontal well casing according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to solve the problems that the logging instrument has no horizontal section driving and crawling capability and the instrument arrangement is not compact, the embodiment of the invention provides a magnetic detection device for detecting the damage of a casing pipe of a horizontal well, which is shown in a first structural block diagram in fig. 1, and a second structural block diagram in fig. 2, and comprises the following components:
the underground connecting nipple 1, the upper centralizer 2, the underground power nipple 3, the first driving control nipple 4, the first action unit nipple 5, the data acquisition and transmission nipple 6, the sleeve loss magnetic detection nipple 7, the second action unit nipple 8, the second driving control nipple 9, the lower centralizer 10 and the sealing nipple 11 are sequentially connected; wherein:
the underground connecting nipple 1 is used for connecting a logging cable at one end; the other end is connected with an upper centralizer;
the underground power nipple 3 is electrically connected with the underground connecting nipple 1, the upper centralizer 2, the first driving control nipple 4, the first action unit nipple 5, the data acquisition and transmission nipple 6, the sleeve loss magnetic detection nipple 7, the second action unit nipple 8, the second driving control nipple 9 and the lower centralizer 10 to serve as an underground power supply for supplying power;
the first action unit nipple 5 and the second action unit nipple 8 are used for the traveling movement of the horizontal well casing damage magnetic detection device;
The first action unit nipple 5, the second action unit nipple 8 includes: a drive unit nipple housing 55, a drive motor 51 and a clutch (not shown in fig. 2), a transmission gear set 54, a drive arm 54 and a drive wheel 53; the driving motor 51 and the clutch are arranged inside the driving unit nipple housing 55; the power input end of the transmission gear set 54 is connected with the output end of the driving motor 51, and the power output end of the transmission gear set 54 is connected with the driving arm 54 and the driving wheel 53; the drive wheel 53 is arranged at the end of a drive arm 54 (not shown in fig. 1).
When the design of the magnetic detection device for the damage of the horizontal well casing is carried out, the driver and the detector are taken as a whole, and mechanisms with similar functions can be simplified and combined in consideration of the structure and the functions. For example, the centralizer arm and the driving arm are provided with the functions of supporting the string of the horizontal well casing damage magnetic detection device and keeping the horizontal well casing damage magnetic detection device centered, and the centralizer arm and the driving arm can share one set of opening and tightening trigger control system during design, so that the underground actions are reduced, and the mechanism of the horizontal well casing damage magnetic detection device is simplified; when the horizontal section of the horizontal well casing damage magnetic detection device climbs, the centralizer arm or the driving arm can be tightened when the horizontal section is bent, so that the length of the horizontal well casing damage magnetic detection device is reduced, the detection passing performance is improved, and the reliability and the application range of the detection tool are improved.
Specifically, as shown in fig. 2, the downhole connection nipple 1 may include, for example, a rotary joint 11 and a tension measurement nipple 13, where a preset distance is reserved between the rotary joint 11 and the tension measurement nipple 13, the preset distance is used for the rotary joint to set a universal joint 12 to be connected with the tension measurement nipple 13, and the rotary joint 11 can rotate relative to the tension measurement nipple 13 through the universal joint 12, so that the horizontal well casing damage magnetic detection device is ensured not to be wound with a logging cable when working downhole; through holes are formed in two sides of the rotary joint 11 and are used for connecting logging cables; the tension measuring nipple 13 is used for completing monitoring of the underground motion state of the detection tool and measuring of the well depth; the two ends of the underground connecting nipple 1 are axially sealed by using high-pressure sealing plugs, and a through hole is formed in the center of each high-pressure sealing plug.
Continuing to show in fig. 2, the upper centralizer 2 comprises an upper centralizer shell 23, at least one pair of centralizer arms 21 and at least one pair of centralizer wheels 22, wherein the centralizer arms 21 are fixedly connected with the upper centralizer shell 23 and the centralizer wheels 22 through pin shafts, the centralizer wheels 22 are fixedly arranged between the centralizer arms 21, the centralizer wheels 22 are provided with through holes, and the centralizer arms 21 are fixedly connected with the through holes through the fixed shafts; the centralizer arms 21 can be opened or contracted, the centralizer wheels are pressed to the inner wall of the sleeve when opened, and the supporting detection device ensures that the detection tool is concentric with the sleeve; for example, a double centralizer wheel may be used to ensure that the centralizer is parallel to the casing axis along the axis;
The double centralizer wheels ensure that the upper centralizer 2 is parallel to the axis of the sleeve in the axis direction, and ensure that the horizontal well sleeve damage magnetic detection device is concentric with the pipeline, so that the horizontal well sleeve damage magnetic detection device does not rub with the sleeve; in addition, the centralizer wheel 22 converts sliding friction of the flat well casing damage magnetic detection device during horizontal section movement into rolling friction; the detection precision and the resolution of each sensor when the horizontal well casing damage magnetic detection device detects casing deformation and damage are guaranteed, the friction resistance of a horizontal section is reduced, and the detection efficiency is improved.
The underground power pup joint 3 is mainly internally provided with a power module, two ends of the power module can be axially sealed by using a high-pressure sealing plug, and a through hole for connecting a lead of a power circuit module is arranged in the center of the high-pressure sealing plug, so that circuit power supply and signal transmission are performed while sealing is ensured; the underground power nipple 3 is used for supplying power to equipment of the underground driver and the horizontal well casing damage magnetic detection device, the device is simple and easy to operate, compared with the wellhead which is used for supplying power to the horizontal well casing damage magnetic detection device in a mode of high-voltage power supply through logging cable transmission, the voltage loss in the cable power supply transmission process is avoided, the research and development and detection cost of the horizontal well casing damage magnetic detection device is reduced, the underground power nipple 3 is easy to replace and maintain, and the reliability and stability of the device are improved.
The first driving control nipple 4 is used for controlling the working state of the driving motor 51 in the first action unit nipple and controlling the motion states of the driving wheel 53 and the driving arm 54; the inside of the first driving control nipple 4 is mainly a circuit module, the circuit module can comprise a clock circuit and a control circuit, two ends of the circuit module are axially sealed by using high-pressure sealing plugs, and a through hole is formed in the center of each high-pressure sealing plug.
With continued reference to fig. 2, in the first action unit nipple 5, a coupling 52 is sequentially connected to a driving motor 51, a transmission gear set 54, a driving arm 54 and a driving wheel 53 through a through hole and a fixed shaft (not shown in fig. 2), wherein the transmission gear set 54 and the driving arm 53 are integrated; the two ends of the short joint 5 of the first action unit are axially sealed by using a high-pressure sealing plug, a through hole driving arm 54 is arranged in the center of the high-pressure sealing plug and can be opened and tightened, and the driving wheel 53 is tightly pressed to the inner wall of the sleeve when opened, so that the driving wheel 53 has enough friction with a pipeline, does not slip when the sleeve of the horizontal well damages the magnetic detection device to move, and drives the sleeve of the horizontal well to damage the traveling movement of the magnetic detection device; when the device is tightened, the driving arm 54 and the driving wheel 53 are contracted into the short section shell 55 of the action unit, so that the detection tool is ensured to have good trafficability in the bending section; the start-stop, forward-reverse rotation and other states of the driving motor 51 are controlled by the first driving control nipple 4; the output torque and the rotation speed of the driving motor 51 are matched with the crawling speed of the horizontal well casing damage magnetic detection device, and the coupler 52 and the transmission gear set 54 mainly function to convert the rotation, which is output by the driving motor and is perpendicular to the axial direction of the pipeline, into the rotation parallel to the axis of the pipeline, and transmit the rotation to the driving wheel 53, so that the speed change adjustment is not needed in the process of transmitting work.
The drive wheel in the first action unit nipple 5 can be selected, for example, as shown in fig. 6, for example, according to the following principle: and selecting proper gear structure teeth number, tooth top height, front inclination angle and back inclination angle. In order to ensure that the driving wheel has proper rotation speed and enough driving force, the number of teeth of the gear structure needs to be matched with the outer diameter of the gear; the tooth strength is insufficient and the tooth breakage is easy when the tooth top height is too large, the wear resistance is insufficient and the replacement frequency is too high when the tooth top height is too small, the angles of the front inclination angle and the back inclination angle can ensure that the pipe wall can be pressed to avoid slipping when the driving wheel rotates, and the blocking can be quickly withdrawn and reduced when the driving wheel withdraws; in addition, the arc involute curve can ensure that the front inclination angle and the back inclination angle do not change greatly when a certain amount of wear occurs between gear teeth, and ensure that the driving force is stable during driving. According to the principle, the proper shape of the driving wheel is selected, damage to the inner wall of the pipeline is avoided when the driving wheel is guaranteed to provide enough driving force, abrasion to the driving wheel is less, sleeve damage condition detection at a long horizontal section can be realized, the detection device is convenient to assemble and disassemble, and the test efficiency is high.
The sleeve loss magnetism detection nipple 7 may include, for example: a magnetic memory sensor and a dynamic angle sensor; the device is used for collecting the signal data related to the detection of the damage of the sleeve;
And the data acquisition and transmission nipple 6 is used for controlling the working states of the magnetic memory sensor and the dynamic angle sensor, and storing and summarizing and transmitting the signal data related to the casing damage detection.
The sleeve loss magnetic detection short section shell 73 can be provided with a groove-shaped through hole, two ends of the sensor arm 71 are provided with through holes, the sensor arm is fixed on the sleeve loss magnetic detection short section shell 73 through a fixing screw, and the sensor arm can reciprocate along the groove-shaped through hole, so that the sensor box 72 is clung to the inner wall of the casing in the detection process; the sensor arm 71 and the sensor box 72 are respectively provided with a through hole, the sensor box 72 is fixed on the sensor arm 71 through bolts, the magnetic memory sensor is packaged in the sensor box 72, and radial expansion and contraction of the sensor box can be realized by adjusting the relative position of the sensor arm, so that diameter changing and detection of the sleeves with different pipe diameters are realized; the magnetic memory sensor is used for collecting a magnetic field distribution signal of the inner wall of the sleeve and detecting early damage conditions of the inner wall of the sleeve of the horizontal well, and detecting stress concentration of the sleeve at the horizontal section and early damage defects such as deformation, corrosion, cracks and the like of the sleeve, so that early diagnosis and flaw detection are carried out on the sleeve; the angle sensor is mainly used for determining the angle of the damaged position of the sleeve in the section of the sleeve shaft; the sensor arm is fixedly arranged on the casing of the sleeve loss magnetic detection short section, the sensor box 72 is fixedly arranged on the sensor arm 71, and the magnetic memory sensor is arranged and sealed in the sensor box 72;
The second action unit nipple 8, because the second action unit nipple 8 is consistent with the first action unit nipple 5 in structure and effect, will not be described here again.
The second driving control short section 9 is used for controlling the working state of the driving motor in the second action unit short section 8 and controlling the motion states of the driving wheel and the driving arm; because the second drive control nipple is consistent with the first drive control nipple in structure and effect, the description is omitted.
The first driving control short section and the second driving control short section are respectively used for controlling the working states of the driving motors in the first action unit short section and the second action unit short section and controlling the motion states of the driving wheels and the driving arms.
Therefore, it should be noted that the first driving control nipple and the first action unit nipple may be an integral unit, and the second driving control nipple and the second action unit nipple may also be a combined unit, and in the present device, multiple groups of combined units including the driving control nipple and the action unit nipple may be included, and two groups are not necessarily required. In the embodiment of the invention, the reason that the two groups of the combination bodies of the driving control pup joint and the action unit pup joint are used is that when one group of combination bodies pass through the bending section, the driving arm and the driving wheel need to be tightened into the action unit pup joint shell, and the other group of combination bodies can drive the horizontal well casing damage magnetic detection device to move.
In one embodiment, the lower centralizer 10 includes a lower centralizer casing, at least one pair of centralizer arms and at least one pair of centralizer wheels, wherein the centralizer arms are fixedly connected with the lower centralizer casing and the centralizer wheels through pins, the centralizer wheels are fixedly arranged between the centralizer arms, the centralizer wheels are provided with through holes, and the centralizer arms are fixedly connected with the through holes of the centralizer arms through fixing shafts; the centralizer arms can be opened or contracted, the centralizer wheels are pressed to the inner wall of the sleeve when opened, and the supporting and detecting device ensures that the detecting tool is concentric with the sleeve; as shown in fig. 2, for example, a double centralizer wheel may be used to ensure that the centralizer is axially parallel to the casing axis.
Since the lower centralizer 10 is identical in structure and effect to the upper centralizer 2, it will not be described in detail herein.
The sealing nipple 11 is used for installing an anti-collision head so as to prevent the horizontal well casing from damaging the magnetic detection device from being impacted and damaged in the pit, and the beam-converging circuit is axially provided with a sealing ring for sealing.
Note that in fig. 2: the upper centralizer casing 23, the first action unit nipple casing 55, the sleeve loss magnetism detection nipple casing 73, the second action unit nipple casing 55, and the lower centralizer casing include left and right two-part casings which are separated in visual effect but are the same whole, that is, unified one casing, in other words, each nipple is structurally one whole.
The upper centralizer 2 is connected with the underground connecting nipple 1 through threads; the downhole power nipple 3 is connected with the upper centralizer 2 through threads, the first driving control nipple 4 is connected with the downhole power nipple 3 through threads, and the first action unit nipple 5 is connected with the first driving control nipple 4 through threads; the data acquisition and transmission nipple 6 is connected with the first action unit nipple 5 through threads; the sleeve loss magnetic detection nipple 7 is connected with the data acquisition and transmission nipple 6 through threads; the second action unit 8 is connected with the sleeve loss magnetism detection short section 7 through threads; the second driving control short joint 9 is connected with the second action unit short joint 8 through threads; the lower centralizer 10 is connected with the second drive control nipple 9 through threads; the sealing nipple 11 is connected with the lower centralizer 10 through threads.
The embodiment of the invention also provides a system for detecting the damage magnetism of the horizontal well casing, which comprises:
the ground control system and the horizontal well casing damage magnetic detection device are as described above;
the ground control system is used for transmitting instructions to the horizontal well casing damage magnetic detection device, and processing and displaying return signals.
The system may further include: the ground data acquisition system; and the device is used for summarizing detection data returned by the horizontal well casing damage magnetic detection device, drawing a casing damage distribution cloud chart and evaluating casing damage risk.
The overall assembly diagram of the test by using the system is shown in fig. 3, and the ground data acquisition and control system is the horizontal well casing damage magnetic detection system in the above embodiment, and is connected with the horizontal well casing damage magnetic detection device through a logging cable, and the horizontal well casing damage magnetic detection device is lowered to a horizontal section through a mileage wheel and a wellhead device.
The system may further comprise a downhole control system and a downhole execution system, the downhole control and execution system being part of the apparatus as opposed to the surface data acquisition and control system; the underground control system is used for controlling the short sections of the horizontal well casing damage magnetic detection device to work in a matched mode, and is equivalent to the master control system and electrically connected with the short sections; the underground execution system is responsible for mechanical movement of the horizontal well casing damage magnetic detection device, namely, mechanical connection with each short joint.
The embodiment of the invention also provides a method for detecting the damage of the horizontal well casing by using the magnetic detection device, which is shown by referring to fig. 7, and comprises the following steps:
step S71, according to the instruction sent to the horizontal section issued by the ground control system, controlling the casing damage magnetic detection device of the horizontal well to be sent to the appointed position of the horizontal section of the well;
step S72, if an instruction sent to a position to be detected by a ground control system is received, or a first delay time is preset after the detection device reaches a specified position of a horizontal section, controlling the underground power nipple, the upper centralizer, the lower centralizer, the first action unit nipple, the first drive control nipple, the second action unit nipple and the second drive control nipple to work, so that the horizontal well casing damage magnetic detection device reaches the position of the starting point to be detected;
step 73, if a detection starting instruction sent by a ground control system is received, or a second delay time is reached after the detection device reaches a start point position to be detected, controlling the data acquisition and transmission nipple and the sleeve loss magnetic detection nipple to work so as to detect the damage of the horizontal well casing;
and step S74, when the horizontal well casing damage magnetic detection device reaches a preset end position to be detected, controlling the horizontal well casing damage magnetic detection device to stop working according to a detection ending instruction sent by a ground control system or according to a third delay time after the detection device reaches the end position to be detected.
In an embodiment, if the instruction sent by the ground control system to the position to be detected is received, or the first delay time is preset to reach after the detection device reaches the specified position of the horizontal section, the data acquisition and transmission nipple and the casing damage magnetic detection nipple can be controlled to work so as to detect the casing damage of the horizontal well.
The above method can propose two kinds of operation control logic according to different detection requirements, and the two kinds of operation control logic are respectively described in the following two embodiments, as shown in fig. 4 and fig. 5.
Embodiment one:
before the following examples are carried out, the test preparation should be made: firstly, determining that the temperature, pressure, well structure and the like of a horizontal section of a test well meet the design requirements of the casing damage magnetic detection device, wherein the minimum curvature radius of a bending section of the test well can meet the trafficability of the device, and the length of the horizontal section meets the length range for carrying out reciprocating detection. Before the horizontal well casing damage magnetic detection device is used for casing detection, well dredging, well scraping, circulating well washing and other operations are preferably performed, so that various impurities in the well are reduced as much as possible, and barriers are cleared for the horizontal well casing damage magnetic detection device.
In fig. 4, the above-mentioned horizontal well casing damage magnetic detection device is initialized, each short section module is sequentially connected into a whole, a logging cable is connected with a rotary joint, the horizontal well casing damage magnetic detection device is initialized to a standby state before being lowered into the well, and the dead weight of the horizontal well casing damage magnetic detection device is utilized by the logging cable in a straight well section and a bent well section;
When the horizontal well casing damage magnetic detection device is sent to a horizontal section, the system can be triggered by a set delay time 1 or by a ground control system, an underground power supply nipple, a centralizer and a drive control nipple are started, a driving wheel of the drive unit nipple is controlled to be opened and compact the inner wall of the casing, and the driving wheel is controlled to rotate by a driving motor so as to push the horizontal well casing damage magnetic detection device to a starting point position to be detected;
after the detection tool reaches the position of the starting point to be detected, the detection tool can be triggered when the system reaches the set delay time 2 or a ground control system is utilized to send a corresponding control instruction, a data acquisition and transmission nipple and a sleeve damage magnetic detection nipple are started, a magnetic memory sensor of the drive control nipple for controlling the sleeve damage magnetic detection nipple is opened and clings to the inner wall of a sleeve, a driver and the drive control nipple are controlled to enable a driving motor to rotate reversely, the detection tool is lifted up by a cable according to the rated speed, the sleeve damage detection work of a horizontal section is started, the sleeve damage magnetic detection system is utilized to detect a magnetic memory signal of the inner wall of a sleeve body, data are stored in a data acquisition module and are transmitted to a wellhead data acquisition system, and sleeve damage detection of different positions of the horizontal section is realized;
After the detection device reaches the end position to be detected, the detection device reaches delay time 3 or is triggered by a ground control system, the damage magnetic detection device of the sleeve pipe of the horizontal well is controlled to stop working, the driving wheel is recovered into the pipe, the centralizer arm and the sensor arm are recovered, the instrument is taken out from the pit, data post-processing and visualization are carried out, the sleeve shape of a measuring section is drawn, the damage position of the sleeve pipe is determined, and the corresponding sleeve damage risk is analyzed, so that early diagnosis and flaw detection of the sleeve pipe are carried out.
Embodiment two:
in fig. 5, the initialization operation of the device for detecting the damage to the casing of the horizontal well is the same as that in the first embodiment, and will not be repeated here. However, after the above-mentioned horizontal well casing damage magnetism detection device is sent to the horizontal section, can wait for the system to reach the time delay 1 that sets up or utilize the ground control system to trigger, start power nipple under the well, centralizer and drive control nipple, start data acquisition and transmission nipple and cover damage magnetism detection nipple, control the magnetism memory sensor of cover damage magnetism detection nipple to open and hug closely the casing inner wall, control the drive wheel of the drive unit nipple to open and compress tightly the casing inner wall, utilize the driving motor to control the rotation of drive wheel, in the course of pushing the detection tool to the starting point position to be measured, use the magnetic memory signal of casing damage magnetism detection system to detect casing body inner wall, store data into data acquisition module and transmit to the well head data acquisition system, compare with the detection data in the first course of embodiment, improve detection accuracy and reliability while realizing the cover damage detection of different positions of the horizontal section;
After the casing damage magnetic detection device of the horizontal well reaches the position of the starting point to be detected, the driving control nipple and the driving unit nipple 6 can be closed after the system reaches the set delay time 2 or triggered by the ground control system, the driving wheel is recovered into the pipe, a detection tool is lifted up by a cable according to the rated speed, the casing damage detection work of the horizontal section is started, the casing damage magnetic detection system is used for detecting the magnetic memory signal of the inner wall of the casing body, and data are stored in the data acquisition module and transmitted to the wellhead data acquisition system, so that the casing damage detection of different positions of the horizontal section is realized;
after the detection device reaches the end position to be detected, the detection device reaches delay time 3 or is triggered by a ground control system, a control instrument stops working, a centralizer arm and a sensor arm are recovered, the horizontal well casing damage magnetic detection device is taken out from the pit, data post-processing and visualization are carried out, the casing morphology of a measurement section is drawn, the casing damage position is determined, and the corresponding casing damage risk is analyzed, so that early diagnosis and flaw detection are carried out on the casing.
Therefore, unlike the first embodiment, in the second operation control logic of fig. 5, in the process of performing damage detection on the casing, detection data in the process of sending the specified position of the horizontal segment to the position to be detected is required to be compared with detection data collected from the position to be detected, so that the accuracy and reliability of sleeve damage detection at different positions of the horizontal segment can be improved.
In a specific implementation, if the detection data in the process of sending the horizontal well casing damage magnetic detection device from the specified position of the horizontal section to the position to be detected is required, the second working control logic shown in fig. 5 in the second embodiment can be used for working, and if not required, the first working control logic shown in fig. 4 in the first embodiment can be used for working, so that the number of collected detection data is reduced, and the process of casing damage detection work is simplified.
The embodiment of the invention provides a device, a system and a method for detecting the damage magnetism of a horizontal well casing. The device comprises: the underground connection nipple, the upper centralizer, the underground power nipple, the first drive control nipple, the first action unit nipple, the data acquisition and transmission nipple, the sleeve loss magnetism detection nipple, the second action unit nipple, the second drive control nipple, the lower centralizer and the sealing nipple are sequentially connected. According to the embodiment of the invention, the underground power nipple is used for supplying power to the underground driver and the detection instrument, the device is simple and easy to operate, compared with the wellhead which is used for supplying power to the underground motor in a cable transmission mode, the voltage loss in the cable power supply transmission process is avoided, the research and development and detection cost of the device is reduced, the underground power nipple is easy to replace and maintain, and the reliability and stability of the device are improved.
In addition, the driving wheel is controlled by the independent driving motor, and the detector can continuously, stably and uniformly acquire data in the detection process in a reciprocating motion in a horizontal section, so that the detection precision and reliability are higher.
The embodiment of the invention selects the proper shape of the driving wheel, prevents the inner wall of the pipeline from being damaged when the driving wheel provides enough driving force, has less abrasion to the driving wheel, can realize the detection of the damage condition of the sleeve in a long horizontal section, and has convenient assembly and disassembly of the detection device and high test efficiency.
The data of the detector in the embodiment of the invention can be stored in the memory of the data acquisition and transmission nipple, the data acquisition system for transmitting the detection data to the ground by using the data acquisition and transmission nipple can perform online detection and offline detection, and the post-processing software can realize rapid detection analysis and risk evaluation of the damage state of the horizontal well casing, thereby being beneficial to field application and management and control.
The embodiment of the invention also provides a computing device, which comprises: the device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the detection method by using the horizontal well casing damage magnetic detection device.
Embodiments of the present invention also provide a computer readable storage medium storing a computer program which when executed by a processor implements a method of detection using a casing damage magnetic detection device such as a horizontal well as described above.
Because the principle of the problems solved by the devices is similar to that of the device for detecting the damage of the casing of the horizontal well, the implementation of the device can be referred to the implementation of the device, and the repetition is omitted.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (14)
1. The utility model provides a horizontal well sleeve pipe damage magnetism detection device which characterized in that includes: the underground connecting nipple, the upper centralizer, the underground power nipple, the first driving control nipple, the first action unit nipple, the data acquisition and transmission nipple, the sleeve loss magnetic detection nipple, the second action unit nipple, the second driving control nipple, the lower centralizer and the sealing nipple are sequentially connected; wherein:
the underground connecting nipple is provided with one end for connecting a logging cable; the other end is connected with an upper centralizer;
the underground power nipple is electrically connected with the underground connecting nipple, the upper centralizer, the first driving control nipple, the first action unit nipple, the data acquisition and transmission nipple, the sleeve loss magnetic detection nipple, the second action unit nipple, the second driving control nipple and the lower centralizer to serve as an underground power supply for supplying power;
the first action unit nipple and the second action unit nipple are used for the traveling movement of the horizontal well casing damage magnetic detection device;
the first action unit nipple, the second action unit nipple includes: the driving unit comprises a short section shell, a driving motor, a clutch, a transmission gear set, a driving arm and driving wheels; the driving motor and the clutch are arranged in the short section shell of the driving unit; the power input end of the transmission gear set is connected with the output end of the driving motor, and the power output end of the transmission gear set is connected with the driving arm and the driving wheel; the driving wheel is arranged at the tail end of the driving arm.
2. The apparatus of claim 1, wherein the downhole power sub comprises a power circuit module;
the two ends of the power circuit module are sealed by using high-pressure sealing plugs, and a through hole for connecting a wire of the power circuit module is arranged in the center of each high-pressure sealing plug.
3. The apparatus of claim 1, wherein the first and second drive control subs are for controlling an operating state of the drive motor in the first and second motion unit subs, and a moving state of the drive wheel and the drive arm, respectively.
4. The apparatus of claim 1 wherein the casing loss magnetic detection nipple comprises:
a magnetic memory sensor and a dynamic angle sensor; the device is used for collecting the signal data related to the detection of the damage of the sleeve;
the data acquisition and transmission nipple is used for controlling the working states of the magnetic memory sensor and the dynamic angle sensor and storing and summarizing and transmitting the signal data related to the casing damage detection.
5. The apparatus of claim 1, wherein the upper centralizer and lower centralizer comprise:
the upper centralizer includes: the upper centralizer shell, the at least one pair of centralizer arms and the at least one pair of centralizer wheels are fixedly connected with the centralizer shell and the centralizer wheels through pin shafts, the centralizer arms can be opened or contracted, and the centralizer wheels are pressed to the inner wall of the sleeve when opened so as to support the detection device and ensure that the detection tool is concentric with the sleeve; the centralizer wheel is fixedly connected with the centralizer arm;
The lower centralizer includes: the lower centralizer shell, the at least one pair of centralizer arms and the at least one pair of centralizer wheels are fixedly connected with the centralizer shell and the centralizer wheels through pin shafts, the centralizer arms can be opened or contracted, and the centralizer wheels are pressed to the inner wall of the sleeve when opened so as to support the detection device and ensure that the detection tool is concentric with the sleeve; the centralizer wheel is fixedly connected with the centralizer arm.
6. The apparatus of any one of claims 1-5, wherein the sealing nipple comprises:
the anti-collision head is used for installing an anti-collision head so as to prevent the horizontal well casing from damaging the magnetic detection device from being damaged by underground collision; the beam converging circuit is axially provided with a sealing ring for sealing.
7. The apparatus of claim 1, wherein the downhole connection sub comprises:
the tension measuring device comprises a rotary joint, a universal joint and a tension measuring nipple; the rotary joint is connected with the tension measurement nipple through a universal joint; and through holes are formed in two ends of the rotary joint and are used for connecting logging cables.
8. The apparatus of claim 1, wherein the upper centralizer is threadably connected to the downhole connection sub; the downhole power nipple is connected with the upper centralizer through threads; the first driving control nipple is connected with the downhole power nipple through threads; the first action unit nipple is connected with the first drive control nipple through threads; the data acquisition and transmission nipple is connected with the first action unit nipple through threads; the sleeve loss magnetic detection nipple is connected with the data acquisition and transmission nipple through threads; the second action unit is connected with the sleeve loss magnetism detection nipple through threads; the second driving control nipple is connected with the second action unit nipple through threads; the lower centralizer is connected with the second driving control nipple through threads; the sealing nipple is connected with the lower centralizer through threads.
9. A horizontal well casing damage magnetic detection system, the system comprising: a ground control system and a horizontal well casing damage magnetic detection device according to any one of claims 1 to 8;
the ground control system is used for transmitting instructions to the horizontal well casing damage magnetic detection device, and processing and displaying return signals.
10. The system of claim 9 further comprising: the ground data acquisition system; and the device is used for summarizing detection data returned by the horizontal well casing damage magnetic detection device, drawing a casing damage distribution cloud chart and evaluating casing damage risk.
11. A method of using the horizontal well casing damage magnetic detection device of claim 1, comprising:
according to the instruction sent to the horizontal section issued by the ground control system, controlling the horizontal well casing damage magnetic detection device to be sent to the appointed position of the horizontal section of the well;
if an instruction sent to a position to be detected by a ground control system is received, or a first delay time is preset to reach after the detection device reaches a specified position of a horizontal section, controlling the underground power nipple, the upper centralizer, the lower centralizer, the first action unit nipple, the first drive control nipple, the second action unit nipple and the second drive control nipple to work, so that the horizontal well casing damage magnetic detection device reaches the position of the starting point to be detected;
If a detection starting instruction sent by a ground control system is received or a second delay time is reached after the detection device reaches a start point position to be detected, controlling the data acquisition and transmission nipple and the sleeve loss magnetic detection nipple to work so as to detect the damage of the casing of the horizontal well;
when the horizontal well casing damage magnetic detection device reaches a preset end position to be detected, the horizontal well casing damage magnetic detection device is controlled to stop working according to a detection ending instruction sent by a ground control system or according to a third delay time after the detection device reaches the end position to be detected.
12. The method of claim 11, wherein the method further comprises:
if the instruction sent to the position to be detected by the ground control system is received, or the detection device reaches the designated position of the horizontal section, the first delay time is preset, and the data acquisition and transmission nipple and the sleeve loss magnetic detection nipple are controlled to work so as to detect the damage of the casing of the horizontal well.
13. A computing device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program implementing the method of claim 11 or claim 12 for detection using a horizontal well casing damage magnetic detection device.
14. A computer readable storage medium, characterized in that it stores a computer program which, when executed by a processor, implements the method of claim 11 or claim 12 for detection using a casing damage magnetic detection device such as a horizontal well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311366704.6A CN117432391A (en) | 2023-10-20 | 2023-10-20 | Device, system and method for detecting damage magnetism of horizontal well casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311366704.6A CN117432391A (en) | 2023-10-20 | 2023-10-20 | Device, system and method for detecting damage magnetism of horizontal well casing |
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| CN117432391A true CN117432391A (en) | 2024-01-23 |
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| CN202311366704.6A Pending CN117432391A (en) | 2023-10-20 | 2023-10-20 | Device, system and method for detecting damage magnetism of horizontal well casing |
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| Country | Link |
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| CN (1) | CN117432391A (en) |
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- 2023-10-20 CN CN202311366704.6A patent/CN117432391A/en active Pending
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