Shallow micro-logging downhole detection device and micro-logging control and acquisition system

Abstract

This application provides a shallow micro-logging downhole detection device and a micro-logging control and acquisition system, belonging to the field of surface exploration technology. The micro-logging control and acquisition system includes a shallow micro-logging downhole detection device. The shallow micro-logging downhole detection device includes multiple detection components spaced apart and connected sequentially along the well depth direction. Each detection component extends along the well depth direction and includes a support component, a drive component, a push arm, and a detection element. The drive component and the detection element are both mounted on the support component. The first end of the push arm is hinged to the drive component and the support component, and the push arm and the detection element are radially opposite each other in the well. The drive component drives the push arm to rotate, causing the second end of the push arm to extend out of the support component and causing the second end of the push arm and a portion of the detection element to abut against the well wall; or, retracting the push arm. The shallow micro-logging downhole detection device of this application provides relatively accurate detection results and is easy to use.

Description

Technical Field

[0001] This application relates to the field of surface exploration technology, and in particular to a shallow micro-logging downhole detection device and a micro-logging control and acquisition system. Background Technology

[0002] A micrologging control and acquisition system is a system capable of detecting and analyzing substances contained in shallow subsurface layers. A micrologging control and acquisition system generally includes a seismic source, a detection device, and a control system. The seismic source is used to generate seismic waves, the detection device is used to detect the propagation speed of the seismic waves and feeds the propagation speed of the seismic waves back to the control system. The control system determines the type of substances present in the shallow subsurface layers based on the wave velocity of the seismic waves. Generally, in order to make the propagation speed of the seismic waves detected by the detection device more accurate, the seismic source is placed at the wellhead, while the detection device is placed inside the well.

[0003] In related technologies, a micro-logging control and acquisition system generally includes a detection element. During use, the detection element is suspended in the well with a large gap between it and the well wall. When it is necessary to explore materials in the shallow surface layer at different depths, the detection element needs to be placed in the corresponding position. In other words, the position of the detection element is different when the shallow surface layer to be explored is different.

[0004] Therefore, during the use of the aforementioned micro-logging control and acquisition system, there is a gap between the detection element and the well wall, which makes the measured propagation speed of the vibration wave inaccurate. In addition, when it is necessary to explore materials in the shallow surface layer at different depths, the position of the detection element must be changed, which is inconvenient to use. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a shallow micro-logging downhole detection device and a micro-logging control and acquisition system, which provides accurate detection results and is easy to use.

[0006] On one hand, this application provides a shallow micro-lobe well downhole detection device for placement inside a well. The shallow micro-lobe well downhole detection device includes multiple detection components that are spaced apart and connected sequentially along the well depth direction. The detection components extend along the well depth direction and include a support component, a drive component, a push arm, and a detection element. The drive component and the detection element are both disposed on the support component. The first end of the push arm is hinged to the drive component and the support component, and the push arm and the detection element are arranged opposite each other in the radial direction of the well. The drive component is used to drive the push arm to rotate, so that the second end of the push arm extends out of the support component and that the second end of the push arm and part of the structure of the detection element abut against the well wall; or, to retract the push arm.

[0007] On the other hand, this application provides a micro-logging control and acquisition system, including a seismic source module, a control and acquisition module, and the aforementioned shallow micro-logging downhole detection device. Both the seismic source module and the control and acquisition module are located on the ground, with the seismic source module close to the wellhead. The seismic source module is used to generate vibrations and emit vibration waves, and the detection element of the shallow micro-logging downhole detection device is used to receive the vibration waves and convert them into electrical signals. The control and acquisition module is electrically connected to the shallow micro-logging downhole detection device, and is used to receive the electrical signals and analyze the substances present in the shallow surface layer based on the electrical signals.

[0008] The shallow micro-logging well downhole detection device and micro-logging well control and acquisition system provided in this application include a shallow micro-logging well downhole detection device placed inside the well. The device comprises multiple detection components spaced apart and connected sequentially along the well depth direction. Each detection component includes a support component, a drive component, a push arm, and a detection element. Both the drive component and the detection element are mounted on the support component. The first end of the push arm is hinged to the drive component and the support component, and the push arm and the detection element are radially opposite each other in the well. The drive component drives the push arm to rotate, causing the second end of the push arm to extend out of the support component and abut against the well wall, or retracting the push arm. The shallow micro-logging well downhole detection device provided in this application provides accurate detection results and is easy to use. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the shallow micro-lobe well downhole detection device provided in the embodiments of this application;

[0010] Figure 2a A schematic diagram of the detection component of the shallow micro-lobe well downhole detection device provided in this application embodiment;

[0011] Figure 2b for Figure 2a Enlarged schematic diagram of the local structure at point A;

[0012] Figure 3 A schematic diagram of the connection structure between the drive assembly and the push arm in the shallow micro-lobe well downhole detection device provided in this application embodiment;

[0013] Figure 4 A diagram showing the state of the detection component in the shallow micro-lobe well detection device provided in this application embodiment when it needs to operate;

[0014] Figure 5a A schematic diagram illustrating the connection relationship between the cable and connector assembly in the shallow micro-lobe well downhole detection device provided in this application embodiment;

[0015] Figure 5b for Figure 5aEnlarged schematic diagram of the local structure at point B;

[0016] Figure 6 A state diagram of the shallow micro-lobe well detection device provided in this application embodiment during transportation;

[0017] Figure 7 This is a schematic diagram of the structure of the micro-logging control and acquisition system provided in the embodiments of this application.

[0018] Explanation of icon numbers:

[0019] 1-Detection component; 2-Cable; 3-Connector assembly; 4-Threaded pull ring; 5-Sealing component; 6-Sealing end; 7-Protective component;

[0020] 10-Shallow micro-lobe well downhole detection device; 11-Support assembly; 12-Drive assembly; 13-Push arm; 14-Detection component; 31-Connector; 32-Sealing assembly; 51-Hanging hole; 20-Voltage source module; 30-Control and acquisition module;

[0021] 111-Support housing; 112-Guide seat; 113-Pivot shaft; 121-Drive component; 122-Linkage assembly; 123-First shaft segment; 124-Second shaft segment; 125-Third shaft segment; 126-First spring; 127-Second spring; 128-Spring sleeve; 131-First extension arm; 132-Second extension arm; 141-First part structure; 142-Second part structure; 311-Through hole; 321-First sealing sleeve; 322, 322a, 322b-Second sealing sleeve; 100-Micro logging control and acquisition system;

[0022] 1111-Inner cavity; 1121-Through hole; 1221-Rotating component; 1222-Moving assembly; 1223-Nut; 1224-Drive shaft; 1225-First nut body; 1226-Second nut body; 1227-First threaded hole; 1228-Second threaded hole; 1229-Elastic component; 1241-Pivot hole; 1311-First connecting hole; 1321-First sidewall; 1322-Second sidewall; 1323-Second connecting hole. Detailed Implementation

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0024] In the process of exploring underground materials, it is usually necessary to test a certain medium. By analyzing the characteristics of the medium, the types of underground materials can be determined. Generally, the exploration of underground materials is divided into two types: one is to explore materials in the shallow layer of the earth's surface, which can be up to 200 meters underground; the other is to explore materials in the deep layer of the earth's surface.

[0025] In related technologies, exploration systems for shallow surface materials typically include a seismic source, a geophone, and a control and acquisition module. The seismic source generates vibrations and emits seismic waves, the geophone receives the seismic waves and converts them into electrical signals, and the control and acquisition module performs control and communication functions and performs analog-to-digital conversion on the geophone signals. Generally, geophones are placed in two locations: one is near the wellhead, and the other is inside the well. To obtain more accurate detection results, geophones are usually placed inside the well.

[0026] For example, a shallow surface material exploration system in a related technology includes a seismic source, a geophone, and a control and acquisition module. The geophone is a single unit. When measuring subsurface materials at different depths, the geophone needs to be moved to the corresponding location, which is inconvenient. Furthermore, there is a gap between the geophone and the well wall, resulting in inaccurate vibration data and affecting the analysis and judgment of shallow surface materials. This leads to less accurate vibration data.

[0027] Therefore, this application provides a shallow micro-logging well downhole detection device and a micro-logging well control and acquisition system. By setting up multiple detection components connected in sequence, the shallow micro-logging well downhole detection device provided in this application can detect vibration waves at multiple distances from the source with a single movement, which is convenient to use. In addition, the shallow micro-logging well downhole detection device provided in this application includes a drive component and a push arm. The drive component is used to drive the push arm to rotate so that the detection component can abut against the well wall to achieve effective detection of vibration waves.

[0028] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific implementation details.

[0029] Figure 1 This is a schematic diagram of the structure of the shallow micro-lobe well downhole detection device provided in the embodiments of this application. Figure 2a A schematic diagram of the detection component of the shallow micro-logging downhole detection device provided in this application embodiment. Figure 2b for Figure 2a A magnified schematic diagram of the local structure at point A.

[0030] like Figure 1 As shown, this embodiment provides a shallow micro-lobe well downhole detection device 10 for placement inside a well. The shallow micro-lobe well downhole detection device 10 includes multiple detection components 1 that are spaced apart and connected sequentially along the well depth direction. The detection components 1 extend along the well depth direction and include a support component 11, a drive component 12, a push arm 13, and a detection element 14. The support component 11 includes at least a support shell 111, the extension direction of which is consistent with the well depth direction, and an inner cavity 1111, the extension direction of which is consistent with the extension direction of the support shell 111. The drive component 12 and the detection element 14 are both disposed on the support component 11. The drive assembly 12 is located inside the inner cavity 1111. The detection element 14 has a first part structure 141 and a second part structure 142. The first part structure 141 is located inside the inner cavity 1111, and the second part structure 142 is exposed outside the support housing 111. The first end of the push arm 13 is hinged to the drive assembly 12 and the inner wall of the inner cavity 1111, and the push arm 13 and the detection element 14 are arranged opposite to each other in the radial direction of the well. The drive assembly 12 is used to drive the push arm 13 to rotate so that the second end of the push arm 13 extends out of the support housing 111, and the second end of the push arm 13 and the second part structure 142 both abut against the well wall, or to retract the push arm 13.

[0031] It should be noted that during the transportation and movement along the well depth direction, the push arm 13 of the shallow micro-lobe well downhole detection device 10 provided in this embodiment is in a retracted state. At this time, there is a gap between the second end of the push arm 13 and the well wall. Only when the detection component 14 needs to perform detection work will the second end of the push arm 13 and the second part of the structure 142 abut against the well wall.

[0032] The shallow micro-gauge well downhole detection device 10 provided in this embodiment includes multiple detection components 1. Therefore, the shallow micro-gauge well downhole detection device 10 covers a large height range in the well depth direction, making it easy to use. Specifically, when using the shallow micro-gauge well downhole detection device 10 provided in this embodiment, firstly, the shallow micro-gauge well downhole detection device 10 provided in this embodiment is placed at a preset depth in the well. Then, the drive component 12 is activated, and the drive component 12 drives the push arm 13 to rotate, so that the second end of the push arm 13 and the second part structure 142 both abut against the well wall, thereby making the detection results of the detection component 1 more accurate.

[0033] It should be noted that, in order to reduce the overall weight of the shallow micro-lobe well downhole detection device 10 provided in this embodiment, so as to facilitate the transportation of the shallow micro-lobe well downhole detection device 10 provided in this embodiment, the aforementioned support shell 111 can be made of a lightweight metal material, such as aluminum. Here, there is no limitation on the specific material used to make the support shell 111. Furthermore, while making the support shell 111 have a small weight, it should also have sufficient load-bearing capacity. Generally, the support shell 111 should be able to withstand an external environmental pressure of at least 5 MPa.

[0034] Figure 3 A schematic diagram of the connection structure between the drive assembly and the push arm in the shallow micro-logging downhole detection device provided in this application embodiment.

[0035] like Figures 2a to 3 As shown, in order to enable the drive assembly 12 to drive the push arm 13 to rotate accordingly, in a specific embodiment of this invention, the drive assembly 12 includes a drive component 121 and a linkage component 122. Specifically, the drive component 121 may be a motor, and the linkage component 122 includes a rotating component 1221 and a moving component 1222. The moving component 1222 is located in the inner cavity 1111, and the moving component 1222 slides with the supporting housing 111 in the extending direction of the supporting housing 111. The rotating component 1221 is a lead screw, which is connected to the motor shaft of the motor, and the axial direction of the lead screw is consistent with the axial direction of the motor shaft. When the shallow micro-well logging downhole detection device 10 provided in this embodiment is placed at a preset depth in the well, firstly, the motor is activated, and the activation of the motor drives the lead screw to rotate.

[0036] Furthermore, the moving assembly 1222 includes a nut 1223 and a drive shaft 1224. The axial direction of the drive shaft 1224 is aligned with the axial direction of the lead screw, and the lead screw and drive shaft 1224 are radially adjacent to each other in the inner cavity 1111. In this embodiment, the nut 1223 may include a first nut body 1225 and a second nut body 1226 fixedly connected. The first nut body 1225 has a first threaded hole 1227, and the second nut body 1226 has a second threaded hole 1228. The axial direction of the first threaded hole 1227 is aligned with the axial direction of the lead screw, and the axial direction of the second threaded hole 1228 is aligned with the axial direction of the drive shaft 1224. In a specific embodiment of the example, the lead screw passes through the first threaded hole 1227 and is threadedly connected to the first nut body 1225, and the drive shaft 1224 passes through the second threaded hole 1228 and is fixedly connected to the second nut body 1226. When the shallow micro-lobe well downhole detection device 10 provided in this embodiment is placed at a preset depth in the well, firstly, the motor is turned on, and the motor drives the lead screw to rotate, so that the first nut body 1225 threadedly connected to the lead screw moves in the axial direction of the lead screw while rotating, so as to drive the nut 1223 as a whole and the drive shaft 1224 fixedly connected to the second nut body 1226 to move in the axial direction of the lead screw.

[0037] In order to improve the stability of the drive shaft 1224 moving in the axial direction of the lead screw, in this embodiment, a guide seat 112 fixedly connected to the support housing 111 can be provided inside the support housing 111. The guide seat 112 has a through hole 1121 through which the drive shaft 1224 passes. The axial direction of the through hole 1121 is consistent with the extension direction of the support housing 111, so that the guide seat 112 and the drive shaft 1224 slide together.

[0038] Figure 4 This is a diagram showing the state of the detection component in the shallow micro-lobe well downhole detection device provided in this application embodiment when it needs to operate.

[0039] It should be noted that the section lines in the figure represent the underground portion.

[0040] To connect the push arm 13 to the moving assembly 1222, in this embodiment, the drive shaft 1224 includes a first shaft segment 123, a second shaft segment 124, and a third shaft segment 125 connected sequentially in the axial direction of the drive shaft 1224. The first end of the push arm 13 is hinged to the second shaft segment 124 and the inner wall of the inner cavity 1111. Specifically, a pivot shaft 113 is provided on the inner wall of the inner cavity 1111, and a pivot hole 1241 for the pivot shaft 113 to pass through is provided on the second shaft segment 124. The axial direction of the pivot hole 1241 is consistent with the axial direction of the pivot shaft 113, and the axial direction of the pivot shaft 113 is perpendicular to the axial direction of the drive shaft 1224. Figure 4As shown, when the shallow micro-gauge well downhole detection device 10 provided in this embodiment is placed at a preset depth in the well, firstly, the motor is turned on, and the motor drives the lead screw to rotate, so that the first nut body 1225, which is threadedly connected to the lead screw, moves in the axial direction of the lead screw while rotating, so as to drive the nut 1223 as a whole and the drive shaft 1224 to move in the axial direction of the lead screw, thereby driving the push arm 13 to rotate around the pivot shaft 113, so that the second end of the push arm 13 and part of the detection element 14 abut against the well wall.

[0041] It should be noted that during the process of making the second end of the push arm 13 and part of the detection element 14 abut against the well wall, the drive shaft 1224 moves in the direction of greater underground depth.

[0042] To improve the versatility of the shallow micro-lobe wellbore detection device 10 provided in this embodiment, such as... Figure 2b and Figure 3 As shown, in some optional embodiments, the push arm 13 includes a first extension arm 131 and a second extension arm 132 that are detachably connected. The first extension arm 131 and the second extension arm 132 are distributed adjacent to each other in the width direction of the push arm 13, and the length of the first extension arm 131 in the extension direction of the push arm 13 is not equal to the length of the second extension arm 132 in that direction. In this way, when the diameter of the well is large, the one with the larger length of the first extension arm 131 and the second extension arm 132 can be used to resist the well wall, and when the diameter of the well is small, the one with the smaller length of the first extension arm 131 and the second extension arm 132 can be used to resist the well wall.

[0043] In a specific embodiment of this invention, the extension length of the first extension arm 131 is less than the extension length of the second extension arm 132, and the first extension arm 131 is located on the side of the second extension arm 132 facing the detection element 14. The first extension arm 131 is pivotally connected to the pivot shaft 113. Specifically, in order to prevent the push arm 13 from increasing the volume occupied by the detection component 1 when the push arm 13 is in the retracted state, in this embodiment, the second extension arm 132 has a first sidewall 1321 and a second sidewall 1322 that are spaced apart in the radial direction of the well. The second sidewall 1322 is located on the side of the first sidewall 1321 away from the detection element 14, and the position of the second sidewall 1322 in the radial direction of the well is located at the point of maximum diameter of the supporting housing 111 in that direction. In this way, the outermost position of the push arm 13 in the radial direction of the well is the same as the position of the point of maximum diameter of the supporting housing 111 in that direction, so that the push arm 13 is located inside the supporting housing 111 when it is in the retracted state, preventing the push arm 13 from colliding with other objects, thereby effectively protecting the push arm 13.

[0044] To achieve a detachable connection between the first extension arm 131 and the second extension arm 132, in this embodiment, the first extension arm 131 has a plurality of first connecting holes 1311 spaced apart along the extension direction of the first extension arm 131, and the second extension arm 132 has a plurality of second connecting holes 1323 spaced apart along the extension direction of the second extension arm 132. The axial direction of the first connecting holes 1311 is consistent with the axial direction of the second connecting holes 1323, and the axial direction of the first connecting holes 1311 is perpendicular to the extension direction of the first extension arm 131. The second connecting holes 1323 are provided in a one-to-one correspondence with the first connecting holes 1311. The connection between the first connecting holes 1311 and the second connecting holes 1323 can be achieved by threaded fasteners, so as to realize the detachable connection between the first extension arm 131 and the second extension arm 132.

[0045] Since the motor is an electronically controlled component, it is inevitable that it will malfunction or fail during use. In order to prevent the push arm 13 from failing and being unable to retract, in some optional embodiments, the linkage assembly 122 also includes an elastic assembly 1229. The elastic assembly 1229 includes at least one elastic element. The elastic assembly 1229 is located radially between the drive shaft 1224 and the support housing 111. In this way, even if the motor fails, the drive shaft 1224 will move upward under the elastic force of the elastic element.

[0046] In some alternative embodiments, the elastic element is a spring, which is sleeved on the drive shaft 1224.

[0047] In a specific embodiment of this invention, the elastic component 1229 includes a first spring 126 and a second spring 127. The first spring 126 is sleeved on the first shaft segment 123, and the second spring 127 is sleeved on the second shaft segment 124. Specifically, a spring sleeve 128 is sleeved on the upper end of the first shaft segment 123, the upper end of the first spring 126 abuts against the lower end of the spring sleeve 128, and the lower end of the second spring 127 abuts against the upper end of the guide seat 112.

[0048] It should be noted that the terms "upper end" and "lower end" mentioned above are directional terms for the shallow micro-logging downhole detection device 10 provided in this embodiment when it is in use.

[0049] Figure 5a This is a schematic diagram showing the connection relationship between the cable and connector assembly in the shallow micro-logging downhole detection device provided in this application embodiment. Figure 5b for Figure 5a A magnified view of the local structure at point B.

[0050] like Figure 5a and Figure 5bAs shown, in order to achieve the connection between two adjacent detection components 1, the shallow micro-gauge well downhole detection device 10 provided in this embodiment also includes a cable 2 and a connector assembly 3. The cable 2 is located between two adjacent detection components 1, and both ends of the cable 2 along its own extension direction are respectively connected to the corresponding detection component 1 through the connector assembly 3.

[0051] To achieve a sealed connection between the cable 2 and the detection component 1, preventing liquid or impurities from entering the detection component 1, in some optional embodiments, the connector component 3 includes a connector portion 31 and a sealing component 32. The connector portion 31 has a through hole 311 through which the cable 2 passes. The axial direction of the through hole 311 is aligned with the well depth direction, and the through hole 311 extends through the connector portion 31 in the axial direction. The first end of the connector portion 31 is detachably connected to the support housing 111. A portion of the cable 2 extends into the through hole 311 through the second end of the connector portion 31. The sealing component 32 is located radially between the inner wall surface of the through hole 311 and the outer surface of the cable 2, and the sealing component 32 covers a portion of the cable 2 in the circumferential direction.

[0052] It should be noted that a threaded pull ring 4 is sleeved on the outer side of the first end of the connector 31, and the end of the support housing 111 is detachably connected to the first end of the connector 31 through the threaded pull ring 4. In some other embodiments, other connection methods can also be used between the connector 31 and the support housing 111. Here, the connection method between the mating head 31 and the support housing 111 is not specifically limited.

[0053] In a specific embodiment of this example, the sealing assembly 32 includes a first sealing sleeve 321 and two second sealing sleeves 322. The first sealing sleeve 321 and the two second sealing sleeves 322 are distributed sequentially at intervals along the axial direction of the through hole 311. The first sealing sleeve 321 is located on the side of the second sealing sleeve 322 facing the first end of the connector portion 31. The inner wall surfaces of the first sealing sleeve 321 and the second sealing sleeve 322 are tightly fitted to the outer surface of the cable 2. The outer wall surfaces of the first sealing sleeve 321 and the second sealing sleeve 322 are tightly fitted to the inner wall surface of the through hole 311. The connector portion 31 has an annular cavity for the first sealing sleeve 321 and the second sealing sleeve 322 to be inserted.

[0054] In a specific embodiment of this invention, a portion of the cable 2 extends into the first sealing sleeve 321, which is used to lock the end of the cable 2. The second sealing sleeve 322 includes a second sealing sleeve 322a and a second sealing sleeve 322b. The second sealing sleeve 322a is located between the first sealing sleeve 321 and the second sealing sleeve 322b. The outer edge of the second sealing sleeve 322a is inserted into the corresponding annular cavity, and a portion of the end of the second sealing sleeve 322b is inserted into the corresponding annular cavity. The inner wall surfaces of both the second sealing sleeve 322a and the second sealing sleeve 322b are in contact with the armor layer of the cable 2.

[0055] It should be noted that, in this embodiment, there are no specific restrictions on the shape of the first sealing sleeve 321, the second sealing sleeve 322a, and the second sealing sleeve 322b. Any shape of the first sealing sleeve 321, the second sealing sleeve 322a, and the second sealing sleeve 322b can be adopted as long as it can achieve the purpose of this embodiment.

[0056] Furthermore, in order to smoothly insert the second sealing sleeve 322a and the second sealing sleeve 322b into the corresponding annular cavity, in some optional embodiments, both the second sealing sleeve 322a and the second sealing sleeve 322b can be rubber parts. During the installation of the second sealing sleeve 322a and the second sealing sleeve 322b, the second sealing sleeve 322a and the second sealing sleeve 322b will be subjected to compression to effectively seal the cable 2 and the connector 31, thereby achieving a sealed connection between the cable 2 and the supporting shell 111.

[0057] In order to encapsulate the bottom of the shallow micro-lobe well detection device 10 provided in this embodiment during its use, the shallow micro-lobe well detection device 10 also includes a sealing component 5. The sealing component 5 is disposed on the detection component 1 near the bottom of the well among the multiple detection components 1, and the detection component 1 near the bottom of the well has a sealing end 6 facing the bottom of the well. The sealing component 5 is used to seal the sealing end 6. It should be noted that during the use of the shallow micro-lobe well detection device 10 provided in this embodiment, the end of the detection component 1 near the wellhead among the multiple detection components 1 facing the wellhead is sealed. In this way, liquids and impurities in the well can be prevented from entering the shallow micro-lobe well detection device 10 provided in this embodiment, so that the detection results of the shallow micro-lobe well detection device 10 provided in this embodiment are more accurate.

[0058] During the process of placing the shallow micro-lobe well downhole detection device 10 provided in this embodiment into the well, in order to make the extension direction of the shallow micro-lobe well downhole detection device 10 consistent with the direction of the well, the shallow micro-lobe well downhole detection device 10 provided in this embodiment may also include a counterweight (not shown in the figure), which is disposed on the plugging member 5.

[0059] In a specific embodiment of this example, the sealing member 5 has a hanging hole 51 for hanging a counterweight, and the aforementioned counterweight can be a counterweight block or the like. Here, the type of counterweight is not limited.

[0060] Figure 6 A state diagram of the shallow micro-lobe well detection device provided in this application embodiment during transportation.

[0061] like Figure 6 As shown, since the shallow micro-logging well downhole detection device 1 provided in this embodiment has a relatively long extension length when in use, the cable 2 can be bent during transportation of the shallow micro-logging well downhole detection device 10 provided in this embodiment, so that the multiple detection components 1 are parallel to each other and the extension direction of the detection components 1 is consistent with the length or width direction of the container, so that the shallow micro-logging well downhole detection device 10 provided in this embodiment can be loaded into the container. In order to protect the opposite end of the sealing end 6 during transportation, the shallow micro-logging well downhole detection device 10 provided in this embodiment also includes a protective component 7, which is disposed on the opposite end of the sealing component 5 to protect the shallow micro-logging well downhole detection device 10 provided in this embodiment.

[0062] It should be noted that the aforementioned protective component 7 can be a lifting ring that is threadedly connected to the detection component 1. Here, there are no specific restrictions on the type of protective component 7 or the connection method between the protective component 7 and the detection component 1.

[0063] The shallow micro-lobe wellbore detection device provided in this embodiment is placed inside a well. This device includes multiple detection components spaced apart and connected sequentially along the well depth direction. Each detection component includes a support component, a drive component, a push arm, and a detection element. Both the drive component and the detection element are mounted on the support component. The first end of the push arm is hinged to the drive component and the support component, and the push arm and the detection element are radially opposite each other in the well. The drive component drives the push arm to rotate, causing the second end of the push arm to extend out of the support component and abut against the well wall along with a portion of the detection element; or, retracting the push arm. The shallow micro-lobe wellbore detection device provided in this embodiment provides accurate detection results and is easy to use.

[0064] Figure 7 This is a schematic diagram of the structure of the micro-logging control and acquisition system provided in the embodiments of this application.

[0065] like Figure 7As shown, this embodiment also provides a micro-logging control and acquisition system 100, including a seismic source module 20, a control and acquisition module 30, and a shallow micro-logging downhole detection device 10 as described in the above embodiment. Both the seismic source module 20 and the control and acquisition module 30 are located on the ground, with the seismic source module 20 close to the wellhead. The seismic source module 20 is used to generate vibrations and emit vibration waves. The detection element of the shallow micro-logging downhole detection device 10 is used to receive the vibration waves and convert them into electrical signals. The control and acquisition module 30 is electrically connected to the shallow micro-logging downhole detection device 10, and the control and acquisition module 30 is used to receive electrical signals and analyze the substances present in the shallow surface layer based on the electrical signals.

[0066] It should be noted that the aforementioned source module 20 can be either an active vibration-generating module or a passive vibration-generating module. There is no restriction on the type of source module 20. When the micro-logging control and acquisition system 100 includes the source module 20, the detection element 14 in the shallow micro-logging downhole detection device 10 should be a geophone, which can detect the propagation speed of the vibration wave.

[0067] Furthermore, the shallow micro-lobe well downhole detection device 10 has been described in detail in the above embodiments, and will not be repeated here.

[0068] The micro-logging control and acquisition system provided in this embodiment includes a seismic source module, a control and acquisition module, and a shallow micro-logging downhole detection device. Both the seismic source module and the control and acquisition module are located on the ground, with the seismic source module close to the wellhead. The seismic source module generates vibrations and emits vibration waves, while the detection element of the shallow micro-logging downhole detection device receives the vibration waves and converts them into electrical signals. The control and acquisition module is electrically connected to the shallow micro-logging downhole detection device and receives the electrical signals, analyzing the substances present in the shallow surface layer based on these signals. The shallow micro-logging downhole detection... The device includes multiple detection components spaced apart and connected sequentially along the well depth direction. Each detection component extends along the well depth direction and includes a support component, a drive component, a push arm, and a detection element. Both the drive component and the detection element are mounted on the support component. The first end of the push arm is hinged to the drive component and the support component, and the push arm and the detection element are radially opposite each other in the well. The drive component drives the push arm to rotate, causing the second end of the push arm to extend out of the support component and for both the second end of the push arm and a portion of the detection element to abut against the well wall; or, retracts the push arm. The shallow micro-logging downhole detection device in the micro-logging control and acquisition system provided in this embodiment provides relatively accurate detection results and is easy to use, thus ensuring accurate analysis results and ease of use for the micro-logging control and acquisition system provided in this embodiment.

[0069] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A shallow microlog downhole sensing device for placement within a well, the device comprising: The shallow micro-logging downhole detection device comprises a plurality of detection assemblies which are spaced apart along the well depth direction and connected in sequence, the detection assemblies extend along the well depth direction, the detection assemblies comprise a support assembly, a driving assembly, a pushing arm and a detection member, the driving assembly and the detection member are arranged on the support assembly, the first end of the pushing arm is hinged to the driving assembly and the support assembly, and the pushing arm and the detection member are arranged opposite in the radial direction of the well; the driving assembly comprises a driving member and a linkage assembly, the linkage assembly comprises a rotating member and a moving assembly; the moving assembly comprises a nut and a driving shaft; The support assembly comprises a support shell, and the support shell has an inner cavity; The detection member has a first part structure and a second part structure, the first part structure is located in the inner cavity, and the second part structure is exposed outside the support shell; The driving assembly is used to drive the pushing arm to rotate; So that the second end of the pushing arm extends out of the support assembly, and the second end of the pushing arm and part of the structure of the detection member abut against the well wall; Or, the pushing arm is retracted; wherein the part of the structure of the detection member is the second part structure; The linkage assembly further comprises an elastic assembly, the elastic assembly comprises at least one elastic member, and the elastic assembly is located between the driving shaft and the support shell in the radial direction of the driving shaft.

2. The shallow microlog downhole sensing device of claim 1, wherein, The rotating member is connected with the driving member, the moving assembly is connected with the rotating member in a matched manner, and the pushing arm is hinged to the moving assembly; The extension direction of the support shell is consistent with the well depth direction, the extension direction of the inner cavity is consistent with the extension direction of the support shell, the driving assembly is located in the inner cavity, and the moving assembly is in sliding fit with the support shell in the extension direction of the support shell; The driving member is used to drive the rotating member to rotate, drive the moving assembly to move in the extension direction of the support shell, so that the second end of the pushing arm and part of the structure of the detection member abut against the well wall.

3. The shallow microlog downhole sensing device of claim 2, wherein, The rotating member is a screw rod, the nut is sleeved on the screw rod, and the nut is fixedly connected with the driving shaft; The driving shaft is in sliding fit with the support shell in the extension direction of the support shell, and the first end of the pushing arm is hinged to the driving shaft.

4. The shallow microlog downhole sensing device of any of claims 2-3, wherein, The pushing arm comprises a first extension arm and a second extension arm which are detachably connected, the first extension arm and the second extension arm are adjacent in the width direction of the pushing arm, and the length of the first extension arm in the extension direction of the pushing arm is not equal to the length of the second extension arm in the direction.

5. The shallow microlog downhole sensing device of any of claims 1-3, wherein, Further comprising a cable and a joint assembly, the cable is located between two adjacent detection assemblies, and the two ends of the cable in its own extension direction are connected with the corresponding detection assemblies through the joint assemblies respectively.

6. The shallow microlog downhole sensing device of claim 5, wherein, The joint assembly comprises a joint part and a sealing assembly, the joint part has a through hole for the cable to pass through, the axial direction of the through hole is consistent with the well depth direction, and the through hole penetrates through the joint part in the axial direction of the through hole, and the first end of the joint part is detachably connected with the detection assembly; Part of the structure of the cable extends into the through hole through the second end of the joint part, the sealing assembly is located between the inner wall surface of the through hole and the outer surface of the cable in the radial direction of the through hole, the inner wall surface of the sealing assembly is tightly attached to the outer surface of the cable, and the outer wall surface of the sealing assembly is tightly attached to the inner wall surface of the through hole.

7. The shallow microlog downhole sensing device of any of claims 1-3, wherein, Further comprising a plugging member, the plugging member is arranged on the detection assembly close to the well bottom in the plurality of detection assemblies, and the detection assembly close to the well bottom has a sealed end facing the well bottom, and the plugging member is used to plug the sealed end.

8. The shallow microlog downhole sensing device of claim 7, wherein, Further comprising a counterweight member, the counterweight member is arranged on the plugging member.

9. A microlog-controlled acquisition system characterized by, The shallow micro logging downhole detection device comprises a seismic source module, a control and acquisition module, and the downhole detection device of any one of claims 1-8, the seismic source module and the control and acquisition module are both located on the ground, and the seismic source module is close to the wellhead; The seismic source module is used to generate vibration and emit vibration waves, and the detection member of the shallow micro logging downhole detection device is used to receive the vibration waves and convert the vibration waves into electrical signals; The control and acquisition module is electrically connected with the shallow micro logging downhole detection device, and the control and acquisition module is used to receive the electrical signals and analyze the substances in the surface shallow layer according to the electrical signals.

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