Side-mounted logging sampling power device

Abstract

The utility model relates to the technical field of oil exploration, in particular to a side-mounted logging and sampling power device which comprises a shell, a logging and sampling power assembly is arranged on the outer surface of the shell, and a station switching mechanism for coring is arranged on the side, close to the logging and sampling power assembly, of the interior of the shell. A plurality of coring assemblies matched with the logging sampling power assembly are arranged on the station switching mechanism for coring; by arranging the well logging sampling power assembly and the coring assembly, the shell can be close to the well wall through cooperation between a first hydraulic cylinder and a supporting piece, and therefore it is ensured that a coring barrel can be inserted into the well wall, and the device can be suitable for well logging of various hole diameters; air in rocks or other media is discharged through extrusion between the media and gaps between the media, so that the device can realize complete sampling; the technical problems that when the logging diameter is increased, a sampling device cannot be inserted into the well wall, and gaps exist in a sample are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum exploration, in particular to a side-mounted well logging and sampling power device. Background Art

[0002] Well logging, also known as geophysical logging, is a method of measuring geophysical parameters by using the geophysical properties of rock formations, such as electrochemical properties, electrical conductivity, acoustic properties, and radioactivity. It is one of the applied geophysical methods. In the process of oil exploration and development, wellbore logging sampling is a very effective method to confirm the lithology and oil content of the formation.

[0003] A device for sampling the sidewall of an ultra-deep borehole is disclosed in Chinese patent publication number CN219319796U. During sampling, the carrier shell is hoisted into the ultra-deep borehole with the sampling assembly below the power assembly. After the sampling device reaches the sampling position, the power assembly drives the sampling assembly to extend from the opening. Since the sampling assembly is arranged at an angle, the sampling assembly can contact the wall of the ultra-deep borehole after extending from the opening, and the sampling assembly is then driven by the power assembly to extend from the opening to sample the sidewall of the borehole.

[0004] However, compared with the existing technology in the related field, when the logging aperture becomes larger, the sampling piece of the sampling device cannot be inserted into the well wall, resulting in the equipment being unable to perform sampling normally, affecting the sampling progress and oil exploration oil content analysis. At the same time, when the sample enters the sampling piece, there will be a gap, making it impossible to achieve complete sampling. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a side-mounted well logging sampling power device.

[0006] The purpose of the utility model is achieved through the following technical solutions: a side-mounted well logging and sampling power device, comprising a shell, a well logging and sampling power assembly is provided on the outer surface of the shell, a coring station switching mechanism is provided on the side of the shell near the well logging and sampling power assembly, and a number of coring assemblies that cooperate with the well logging and sampling power assembly are provided on the coring station switching mechanism; the well logging and sampling power assembly comprises a fixed seat fixedly mounted on the shell, a first hydraulic cylinder is symmetrically fixedly mounted inside the fixed seat, a second hydraulic cylinder is fixedly mounted on the fixed seat between two first hydraulic cylinders, an output end of the second hydraulic cylinder extends in a direction opposite to that of the output end of the first hydraulic cylinder, a support is movably connected to a side of the fixed seat away from the shell, and the output ends of the two first hydraulic cylinders are fixedly mounted to the support; the coring assembly comprises a coring barrel axially slidably arranged inside the coring station switching mechanism, a barrel cover is fixedly mounted on one end of the coring barrel near the second hydraulic cylinder, the barrel cover is connected to the second hydraulic cylinder through a connecting assembly, and the connecting assembly is used to control the barrel cover to drive the coring barrel to extend and retract from the inside of the coring station switching mechanism.

[0007] Preferably, the connecting assembly includes a connecting block symmetrically fixedly mounted on the cylinder cover, the connecting block is L-shaped, and the output end of the second hydraulic cylinder is fixedly provided with a connecting piece, the cross section of the connecting piece is T-shaped.

[0008] Preferably, a plurality of anti-slip grooves are provided on a side of the support member away from the first hydraulic cylinder.

[0009] Preferably, a plurality of through holes are provided on the barrel cover, and the through holes are communicated with the interior of the coring barrel.

[0010] Preferably, two slide grooves are symmetrically provided on the outer surface of the core barrel, and pins are fixedly provided at positions corresponding to the slide grooves of the core station switching mechanism.

[0011] Preferably, an oil supply mechanism for supplying oil to the first hydraulic cylinder and the second hydraulic cylinder is fixedly installed inside the housing.

[0012] Beneficial effects:

[0013] The side-mounted logging and sampling power device is provided with a logging and sampling power assembly and a coring assembly. By utilizing the cooperation between the first hydraulic cylinder and the support member, the outer shell can be brought close to the well wall, thereby ensuring that the coring barrel can be inserted into the well wall, making the device suitable for logging of various apertures. By utilizing the through holes on the barrel cover, the air inside the rock or other media is discharged through the compression between the media and the gaps between the media, so that the device can achieve complete sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a structural diagram of the station switching mechanism for coring in the present utility model;

[0017] Figure 3 This is a structural diagram of the support member of the utility model in the first working state;

[0018] Figure 4 This is a structural diagram of the support member of the utility model in the second working state;

[0019] Figure 5 This is a schematic diagram of the internal structure of the fixing seat of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the connection assembly of the utility model;

[0021] Figure 7 This is a schematic diagram of the first axis side of the utility model after the barrel cover and the core barrel are separated;

[0022] Figure 8 This is a schematic diagram of the second axis side of the utility model after the barrel cover and the core barrel are separated.

[0023] In the figure: 1. Housing; 2. Logging sampling power assembly; 21. Fixed seat; 22. First hydraulic cylinder; 23. Second hydraulic cylinder; 24. Support member; 241. Anti-slip groove; 3. Coring station switching mechanism; 4. Coring assembly; 41. Coring barrel; 411. Slide groove; 412. Pin shaft; 42. Barrel cover; 421. Through hole; 5. Connecting assembly; 51. Connecting block; 52. Connecting member; 6. Oil supply mechanism. DETAILED DESCRIPTION

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] Additional aspects and advantages of the present invention will be further described below in conjunction with the accompanying drawings, and some will become apparent from the following description or be learned through practice of the present invention.

[0026] like Figures 1 to 8 As shown, a side-mounted logging sampling power device comprises a shell 1, a logging sampling power assembly 2 is provided on the outer surface of the shell 1, a coring station switching mechanism 3 is provided on the side of the shell 1 close to the logging sampling power assembly 2, and a number of coring assemblies 4 cooperating with the logging sampling power assembly 2 are provided on the coring station switching mechanism 3; the logging sampling power assembly 2 comprises a fixed seat 21 fixedly mounted on the shell 1, a first hydraulic cylinder 22 is symmetrically fixedly mounted on the interior of the fixed seat 21, a second hydraulic cylinder 23 is fixedly mounted on the fixed seat 21 between the two first hydraulic cylinders 22, the output end of the second hydraulic cylinder 23 extends in the opposite direction to the output end of the first hydraulic cylinder 22, and a support 24 is movably connected to the side of the fixed seat 21 away from the shell 1, and the output ends of the two first hydraulic cylinders 22 are fixedly mounted to the support 24; the coring assembly 4 comprises an axially sliding member arranged on the coring station switching mechanism The core barrel 41 inside the structure 3 has a barrel cover 42 fixedly installed at one end of the core barrel 41 close to the second hydraulic cylinder 23, and the barrel cover 42 is connected to the second hydraulic cylinder 23 through the connecting component 5. The connecting component 5 is used to allow the second hydraulic cylinder 23 to control the barrel cover 42 to drive the core barrel 41 to extend and retract from the inside of the coring station switching mechanism 3. The split setting between the barrel cover 42 and the core barrel 41 can facilitate the staff to open the barrel cover 42 to completely remove the sample inside the core barrel 41. The outer shell 1 is provided with movable holes corresponding to the first hydraulic cylinder 22, the first hydraulic cylinder 22 and the position where the core assembly 4 extends. The fixing seat 21 is fixed to the outer shell 1 by bolts, and the first hydraulic cylinder 22 and the second hydraulic cylinder 23 are fixed to the fixing seat 21 by bolts, so that the fixing seat 21 can be conveniently disassembled from the outer shell 1 during maintenance, so that the components inside the fixing seat 21 can be maintained in time.

[0027] As a preferred technical solution of the utility model, Figures 2 to 8As shown, the connecting assembly 5 includes a connecting block 51 symmetrically fixedly mounted on the barrel cover 42, the connecting block 51 is L-shaped, and the output end of the second hydraulic cylinder 23 is fixedly provided with a connecting piece 52, the cross section of the connecting piece 52 is T-shaped, and the cooperation between the connecting block 51 and the connecting piece 52 can allow the output end of the second hydraulic cylinder 23 to control the barrel cover 42 to drive the core barrel 41 to be retracted into the inside of the coring station switching mechanism 3 and control the barrel cover 42 to drive the core barrel 41 to extend from the inside of the coring station switching mechanism 3, and also allow the output end of the second hydraulic cylinder 23 to quickly cooperate with another coring assembly 4 to perform coring when the coring station switching mechanism 3 switches the coring assembly 4.

[0028] As a preferred technical solution of the utility model, Figure 5 、 Figure 7 and Figure 8 As shown, a plurality of anti-slip grooves 241 are provided on the side of the support member 24 away from the first hydraulic cylinder 22. The plurality of anti-slip grooves 241 can be used to improve the fit between the support member 24 and the well wall, thereby ensuring the stability of the coring assembly 4 during sampling. A plurality of through holes 421 are provided on the barrel cover 42, and the through holes 421 are connected to the interior of the coring barrel 41. When the coring barrel 41 is sampling, the rock or other medium inside it will be compressed, and then the air inside the rock or other medium will be discharged through the extrusion between the medium and the gap between the medium, and then discharged through the through holes 421 on the barrel cover 42.

[0029] As a preferred technical solution of the utility model, Figure 2 、 Figure 7 and Figure 8 As shown, two slide grooves 411 are symmetrically provided on the outer surface of the core-taking barrel 41, and the positions of the slide grooves 411 corresponding to the core-taking station switching mechanism 3 are fixed with pins 412. The cooperation between the pins 412 and the slide grooves 411 can constrain the sliding of the core-taking barrel 41, thereby ensuring that the core-taking barrel 41 can only perform stable axial sliding inside the core-taking station switching mechanism 3.

[0030] As a preferred technical solution of the utility model, Figures 1 to 8As shown, an oil supply mechanism 6 for supplying oil to the first hydraulic cylinder 22 and the second hydraulic cylinder 23 is fixedly installed inside the housing 1. The first hydraulic cylinder 22 is supplied with oil through the oil supply mechanism 6, and then the first hydraulic cylinder 22 controls the support member 24 to stick to the well wall. After that, the thrust of the first hydraulic cylinder 22 is used to make the housing 1 close to the well wall (the flow of oil can also control the output end of the first hydraulic cylinder 22 to be retracted into its interior, so that the support member 24 is away from the well wall). The second hydraulic cylinder 23 is supplied with oil through the oil supply mechanism 6, and then the second hydraulic cylinder 23 is supplied with oil through the connector 5. 2 cooperates with the connecting block 51, so that the second hydraulic cylinder 23 controls the barrel cover 42 to drive the coring barrel 41 to extend from the inside of the coring station switching mechanism 3 and insert it into the well wall for sampling (the flow of oil can also control the output end of the second hydraulic cylinder 23 to be retracted into the inside, so that the output end of the second hydraulic cylinder 23 controls the barrel cover 42 to drive the coring barrel 41 to be pulled out from the well wall). The hydraulic cylinder and oil supply mechanism 6 described in this application are well known in the art, so their specific structure and working principle are not described in detail.

[0031] The working process is as follows:

[0032] S1, such as Figures 1 to 5 As shown, after the housing 1 moves to a designated position inside the wellbore, oil is supplied to the first hydraulic cylinder 22 through the oil supply mechanism 6, and then the first hydraulic cylinder 22 controls the support member 24 to stick to the wellbore wall. Then, the thrust of the first hydraulic cylinder 22 is used to allow the housing 1 to stick close to the wellbore wall.

[0033] S2, such as Figures 1 to 5 As shown, when the housing 1 is close to the well wall, oil is supplied to the second hydraulic cylinder 23 through the oil supply mechanism 6. Then, through the cooperation between the connecting piece 52 and the connecting block 51, the second hydraulic cylinder 23 controls the barrel cover 42 to drive the coring barrel 41 to extend from the inside of the coring station switching mechanism 3 and insert into the well wall for sampling.

[0034] S3, such as Figures 5 to 8 As shown, when the core barrel 41 is sampling, the rock or other medium inside it will be compressed, and then the air inside the rock or other medium will be discharged through the compression between the medium and the gap between the medium, and then discharged through the through hole 421 on the barrel cover 42;

[0035] S4, such as Figures 2 to 8 As shown, after the core barrel 41 has finished sampling, the second hydraulic cylinder 23 controls the barrel cover 42 to drive the core barrel 41 back into the core station switching mechanism 3;

[0036] S5, such as Figures 2 to 8As shown, after the coring barrel 41 is retracted into the coring station switching mechanism 3, the coring station switching mechanism 3 can switch another coring assembly 4 to align with the output end of the second hydraulic cylinder 23, and then perform continuous sampling.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A side-mounted well logging sampling power unit, characterized by: The invention comprises a shell (1), wherein a well logging sampling power assembly (2) is provided on the outer surface of the shell (1), and a coring station switching mechanism (3) is provided on the inner side of the shell (1) close to the well logging sampling power assembly (2), and a plurality of coring assemblies (4) matched with the well logging sampling power assembly (2) are provided on the coring station switching mechanism (3); The logging sampling power assembly (2) comprises a fixing seat (21) fixedly mounted on the housing (1), a first hydraulic cylinder (22) being symmetrically fixedly mounted inside the fixing seat (21), a second hydraulic cylinder (23) being fixedly mounted on the fixing seat (21) between the two first hydraulic cylinders (22), an output end of the second hydraulic cylinder (23) extending in a direction opposite to that of the output end of the first hydraulic cylinder (22), a support member (24) being movably connected to a side of the fixing seat (21) away from the housing (1), and the output ends of the two first hydraulic cylinders (22) being fixedly mounted to the support member (24); The coring assembly (4) includes a coring barrel (41) axially slidably arranged inside the coring station switching mechanism (3), and a barrel cover (42) is fixedly installed on one end of the coring barrel (41) close to the second hydraulic cylinder (23). The barrel cover (42) is connected to the second hydraulic cylinder (23) through a connecting assembly (5). By utilizing the provided connecting assembly (5), the second hydraulic cylinder (23) controls the barrel cover (42) to drive the coring barrel (41) to extend and retract from the inside of the coring station switching mechanism (3).

2. A side-mounted well logging sampling power device according to claim 1, characterized in that: The connecting assembly (5) comprises a connecting block (51) symmetrically fixedly mounted on the cylinder cover (42), the connecting block (51) being L-shaped, and a connecting piece (52) being fixedly provided at the output end of the second hydraulic cylinder (23), the cross section of the connecting piece (52) being T-shaped.

3. The side-mounted well logging sampling power device according to claim 1, characterized in that: A plurality of anti-slip grooves (241) are provided on a side of the support member (24) away from the first hydraulic cylinder (22).

4. The side-mounted well logging sampling power device according to claim 1, characterized in that: The barrel cover (42) is provided with a plurality of through holes (421), and the through holes (421) are communicated with the interior of the core barrel (41).

5. The side-mounted well logging sampling power device according to claim 1, characterized in that: Two chute grooves (411) are symmetrically provided on the outer surface of the core-taking barrel (41), and pin shafts (412) are fixedly provided at positions of the core-taking station switching mechanism (3) corresponding to the chute grooves (411).

6. The side-mounted well logging sampling power device according to claim 1, characterized in that: An oil supply mechanism (6) for supplying oil to the first hydraulic cylinder (22) and the second hydraulic cylinder (23) is fixedly installed inside the housing (1).

Images