Oilfield logging drilling fluid sampling device

Abstract

This utility model discloses a drilling fluid sampling device for oil logging, belonging to the field of oil logging technology. It includes a fixed rod, a non-powered adaptive internal support mechanism, and a multi-station sampling mechanism. The non-powered adaptive internal support mechanism is installed in the middle of the fixed rod. The non-powered adaptive internal support mechanism includes a driving component, a moving component, and a locking component. The multi-station sampling mechanism is installed on the lower side of the fixed rod. The multi-station sampling mechanism includes a rotating component, a collecting component, and a sampling control component. Through these methods, the device can perform drilling fluid sampling operations at different time periods, improving the diversity and accuracy of drilling fluid testing.

Description

Technical Field

[0001] This utility model relates to the field of oil logging technology, specifically to a drilling fluid sampling device for oil logging. Background Technology

[0002] Drilling fluid is a multiphase fluid system that is circulated during the oil and gas drilling process. Its core functions are to "carry cuttings, protect the wellbore, cool and lubricate the drill bit, and transmit drilling power," and it is known as the "blood" of drilling engineering.

[0003] Chinese patent CN216247360U discloses a drilling fluid sampling device for oil drilling engineering, including two supports. The top outer walls of both supports have mounting holes, and a connecting frame is bolted to the outer wall of opposite sides of the supports. A motor is fixed to one outer wall of the connecting frame via a support plate. The output end of the motor is threadedly connected to a main gear. Rotating rods are rotatably connected to both sides of the bottom of the connecting frame, and a secondary gear is sleeved on the circumferential outer wall of one rotating rod. The main gear and secondary gear mesh with each other. Extension mechanisms are provided at both ends of the two rotating rods, and support plates are provided at the output ends of the extension mechanisms. Guide grooves are provided on the bottom outer walls of opposite sides of the two supports, and the same guide frame is slidably connected within the four guide grooves. However, this device still has the following problems during use:

[0004] The device described in CN216247360U can only perform a single sampling. The performance parameters of the drilling fluid change dynamically over time. Data obtained from a single sampling cannot cover the changes over the entire period, which can easily lead to inaccurate detection data and a lack of reference value.

[0005] Based on this, the present invention designs a drilling fluid sampling device for oil logging to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a drilling fluid sampling device for oil logging.

[0007] To achieve the above objectives, this utility model provides the following technical solution: The drilling fluid sampling device for oil logging includes a fixed rod, a non-powered adaptive internal support mechanism, and a multi-station sampling mechanism; A non-powered adaptive internal support mechanism for securing the device to the wellbore is installed in the middle of the fixing rod; The unpowered adaptive internal support mechanism includes a drive component, a movable component, and a locking component; the drive component is connected to a fixed rod; the movable component is connected to both the fixed rod and the drive component; and the locking component is mounted on the fixed rod. A multi-station sampling mechanism for drilling fluid sampling operations at different time periods is installed on the lower side of the fixed rod; The multi-station sampling mechanism includes a rotating assembly, a collecting assembly, and a sampling control assembly; the rotating assembly is connected to a fixed rod; multiple collecting assemblies are connected to the rotating assembly; and the sampling control assembly is connected to the fixed rod. Furthermore, the drive assembly includes a slip ring and drive support rods; the slip ring is slidably mounted on the upper side of the outer end of the fixed rod; the upper ends of the plurality of drive support rods are hinged to the lower ends of the slip ring; the lower ends of the drive support rods are connected to the movable assembly; and the slip ring is connected to the locking assembly. Furthermore, the movable component includes a first limiting support rod, a support plate, a second limiting support rod, and a fixing ring; the two fixing rings are fixedly installed on the middle and lower sides of the outer end of the fixing rod; one end of the first limiting support rod is hinged to the upper fixing ring; the other end of the first limiting support rod is hinged to the middle of the inner wall of the support plate. One end of the second limiting support rod is hinged to the lower fixing ring; the other end of the second limiting support rod is hinged to the lower inner wall of the support plate. The second limiting support rod is arranged parallel to the first limiting support rod; The lower end of the drive support rod is hinged to the upper side of the inner wall of the support plate; The locking assembly includes locking rings and hooks; two locking rings are fixedly installed at the upper end of the slip ring; two hooks are rotatably installed at the outer end of the fixed rod. Furthermore, the rotating assembly includes a rotating shaft, a drive motor, a fixed plate, an annular sealing plate, and a rotating disk; the rotating shaft is rotatably mounted inside the fixed rod; the drive motor is fixedly mounted on the upper end of the fixed rod; and the output end of the drive motor is fixedly connected to the rotating shaft. The annular sealing plate is detachably installed at the lower end of the fixing rod; The fixed plate is fixedly connected to the middle of the annular sealing plate; the lower end of the rotating shaft is rotatably connected to the fixed plate. The rotating disk is mounted on the upper inner wall of the annular sealing plate. Furthermore, the upper end of the rotating disk is rotatably connected to the lower end of the fixed rod; the rotating disk is also connected to the collecting assembly. The rotating disk is fixedly connected to the lower outer end of the rotating shaft; Furthermore, a liquid extraction port is provided on the right side of the fixing plate; Furthermore, the rotating disk is provided with multiple mounting slots for placing the collection components; Furthermore, the collection assembly includes a dispensing cylinder, a liquid-taking piston, a core rod, a push plate, and a check valve; multiple dispensing cylinders are arranged in a circumferential array and are detachably mounted on a rotating disk at equal intervals; and a check valve is fixedly installed on the liquid inlet of each dispensing cylinder. A groove is provided in the middle of the separatory cylinder, through which the liquid-taking piston slides vertically and is limited to the separatory cylinder; and a core rod is fixedly installed at the upper end of the liquid-taking piston; the upper end of the core rod is fixedly connected to the push plate; the push plate is connected to the sampling control component. Furthermore, the sampling control component includes a liquid-taking push cylinder and a pull rod; the liquid-taking push cylinder is fixedly installed on the lower side of the outer end of the fixed rod; the output end of the liquid-taking push cylinder is fixedly connected to the pull rod; the middle part of the pull rod is movably abutting against the push plate.

[0008] Compared with the prior art, the advantages of this utility model are as follows: 1. By cooperating with the driving component, the moving component and the locking component, the device can be automatically fixed in the inner wall of the mine without other power, which improves the practicality of the device. 2. By coordinating the rotating components, the collecting components, and the sampling control components, the device can perform drilling fluid sampling operations at different time periods, thereby improving the diversity and accuracy of drilling fluid testing. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a perspective view of the drilling fluid sampling device for oil logging according to this utility model. Figure 2 This is a front view of the drilling fluid sampling device for oil logging according to this utility model; Figure 3 For along Figure 2 A 3D diagram with a portion removed from the BB direction; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a partial 3D view of the connection between the separator and the rotating disk.

[0011] The labels in the diagram represent: 1. Fixed rod; 2. Unpowered adaptive internal support mechanism; 21. Slip ring; 22. Drive support rod; 23. First limit support rod; 24. Support plate; 25. Fixed ring; 26. Locking ring; 27. Hook; 28. Second limit support rod; 3. Multi-station sampling mechanism; 31. Rotating shaft; 32. Drive motor; 33. Fixed plate; 34. Annular sealing plate; 35. Rotating disk; 36. Dispensing cylinder; 361. Disassembly ring; 362. Locking bolt; 37. Liquid-taking piston; 38. Core rod; 39. Push plate; 310. Liquid-taking push cylinder; 312. Pull rod; 313. Liquid-taking port; 315. Check valve. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0013] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0014] In some embodiments, please refer to the accompanying drawings. Figures 1-5 The drilling fluid sampling device for oil logging includes a fixed rod 1, a non-powered adaptive internal support mechanism 2, and a multi-station sampling mechanism 3. A non-powered adaptive internal support mechanism 2 for fixing the device to the well is installed in the middle of the fixed rod 1; The unpowered adaptive internal support mechanism 2 includes a drive component, a movable component, and a locking component; the drive component is connected to the fixed rod 1; the movable component is connected to the fixed rod 1 and the drive component; the locking component is installed on the fixed rod 1. A multi-station sampling mechanism 3 for drilling fluid sampling operations at different time periods is installed on the lower side of the fixed rod 1; The multi-station sampling mechanism 3 includes a rotating assembly, a collecting assembly, and a sampling control assembly; the rotating assembly is connected to the fixed rod 1; multiple collecting assemblies are connected to the rotating assembly; and the sampling control assembly is connected to the fixed rod 1. The right side of the fixed rod 1 is set as a sampling station; In this utility model, the operator inserts the fixing rod 1 into the mine until the lower side of the rotating component is submerged in the drilling fluid in the mine. Then, the locking component releases the movement restriction of the driving component. Subsequently, the driving component will drive the movable component to move away from the fixing rod 1 until the movable component abuts against the inner wall of the mine, thereby realizing the self-locking fixation of the device. Subsequently, the sampling control component drives the collection component at the sampling position to move, and the collection component will sample the drilling fluid in the rotating component. After sampling, the rotating component drives multiple collection components to rotate simultaneously, so that the collection component that has finished sampling leaves the sampling position, thereby allowing the next collection component to rotate to the sampling position; and the next drilling fluid sampling operation is carried out. When the next sampling time period arrives, the sampling control component repeats the above operation to achieve drilling fluid sampling operations at different time periods. After sampling is completed, the operator pulls the drive component and fixed rod 1 upwards. The upward movement of the drive component will cause the movable component to separate from the inner wall of the mine. Then pull out the fixing rod 1; then the operator removes the collection component from the rotating component, and the drilling fluid can be analyzed; By combining the drive, moving, and locking components, the device can be automatically fixed to the inner wall of the mine without additional power, thus improving its practicality. Furthermore, by combining the rotation, collection, and sampling control components, the device can perform drilling fluid sampling operations at different time periods, thereby improving the diversity and accuracy of drilling fluid testing.

[0015] The drive assembly includes a slip ring 21 and a drive support rod 22; the slip ring 21 is slidably mounted on the upper side of the outer end of the fixed rod 1; the upper ends of the plurality of drive support rods 22 are hinged to the lower ends of the slip ring 21; the lower ends of the drive support rods 22 are connected to the movable assembly; the slip ring 21 is connected to the locking assembly. The movable component includes a first limiting support rod 23, a support plate 24, a second limiting support rod 28, and a fixing ring 25; the two fixing rings 25 are fixedly installed on the middle and lower sides of the outer end of the fixing rod 1; one end of the first limiting support rod 23 is hinged to the upper fixing ring 25; the other end of the first limiting support rod 23 is hinged to the middle of the inner wall of the support plate 24. One end of the second limiting support rod 28 is hinged to the lower fixing ring 25; the other end of the second limiting support rod 28 is hinged to the lower inner wall of the support plate 24. The second limiting support rod 28 is arranged parallel to the first limiting support rod 23; The lower end of the drive support rod 22 is hinged to the upper side of the inner wall of the support plate 24; The locking assembly includes locking rings 26 and hooks 27; two locking rings 26 are fixedly installed on the upper end of the slip ring 21; two hooks 27 are rotatably installed on the outer end of the fixed rod 1; The rotating assembly includes a rotating shaft 31, a drive motor 32, a fixed plate 33, an annular sealing plate 34, and a rotating disk 35; the rotating shaft 31 is rotatably mounted inside the fixed rod 1; the drive motor 32 is fixedly mounted on the upper end of the fixed rod 1; the output end of the drive motor 32 is fixedly connected to the rotating shaft 31. The annular sealing plate 34 is detachably installed at the lower end of the fixing rod 1; The fixed plate 33 is fixedly connected to the middle of the annular sealing plate 34; the lower end of the rotating shaft 31 is rotatably connected to the fixed plate 33. The rotating disk 35 is rotatably mounted on the upper inner wall of the annular sealing plate 34; Furthermore, the upper end of the rotating disk 35 is rotatably connected to the lower end of the fixed rod 1; the rotating disk 35 is also connected to the collecting assembly. The rotating disk 35 is fixedly connected to the lower outer end of the rotating shaft 31; A liquid inlet 313 is provided on the right side of the fixing plate 33; The rotating disk 35 has multiple mounting slots for placing the collection components; The drive motor 32 is electrically connected to the timing controller, and the sampling interval time can be preset. The collection assembly includes a liquid separator 36, a liquid receiving piston 37, a core rod 38, a push plate 39, and a check valve 315; multiple liquid separators 36 are arranged in a circumferential array and are detachably mounted on a rotating disk 35 at equal intervals; and a check valve 315 is fixedly installed on the liquid inlet of the liquid separator 36. The upper end of the liquid separator 36 is provided with a vent hole; A sliding groove is provided in the middle of the liquid separator 36, through which the liquid taking piston 37 is slidably connected to the liquid separator 36 in the vertical direction; and a core rod 38 is fixedly installed at the upper end of the liquid taking piston 37; the upper end of the core rod 38 is fixedly connected to the push plate 39.

[0016] The sampling control component includes a liquid-taking push cylinder 310 and a pull rod 312; the liquid-taking push cylinder 310 is fixedly installed on the lower side of the outer end of the fixed rod 1; the output end of the liquid-taking push cylinder 310 is fixedly connected to the pull rod 312; the pull rod 312 is movably abutted against the push plate 39 at the sampling position.

[0017] In this utility model, the operator inserts the fixing rod 1 into the mine until the annular sealing plate 34 is submerged in the drilling fluid inside the mine. Then, the hook 27 is rotated to separate the hook 27 from the locking ring 26. The slip ring 21 will slide down along the fixing rod 1. During the movement, the support plate 24 will be pushed away from the fixing rod 1 by the drive support rod 22. During the movement, the support plate 24 will also push the first limiting support rod 23 and the second limiting support rod 28 to rotate downward until the first limiting support rod 23 and the second limiting support rod 28 are in a horizontal state. At this time, the support plate 24 will also abut against the inner wall of the mine. Subsequently, the liquid extraction push cylinder 310 controls the pull rod 312 of the sampling station to move upward. During the movement, the pull rod 312 will pull the push plate 39, which will drive the core rod 38 and the liquid extraction piston 37 to move upward along the sliding groove opened in the liquid separator 36. At this time, the gas volume in the liquid separator 36 increases and the pressure decreases. The external atmospheric pressure will force the drilling fluid into the interior of the liquid separator 36 through the liquid extraction port 313 and the check valve 315. After the drilling fluid enters the liquid separator 36, the internal gas pressure is still lower than the external pressure. The atmospheric pressure supports the drilling fluid in the liquid separator 36, and under the action of the check valve 315, the liquid separator 36 cannot flow out. When the next sampling time period arrives, the drive motor 32 controls the rotating shaft 31 to rotate, the rotating shaft 31 drives the rotating disk 35 to rotate, and the rotation of the rotating disk 35 will drive multiple liquid separators 36 to rotate together, so that the liquid separator 36 after sampling leaves the sampling position, and the next liquid separator 36 rotates to the sampling position and aligns with the liquid inlet 313; thus facilitating the next drilling fluid sampling operation. Then the liquid extraction cylinder 310 repeats the above operation to achieve drilling fluid sampling at different time periods. After the sampling is completed, the operator pulls the slip ring 21 and the fixed rod 1 upward. The upward movement of the slip ring 21 will cause the support plate 24 to separate from the inner wall of the mine. Then pull out the fixing rod 1; then the operator removes the separator 36 from the rotating plate 35, and the drilling fluid can be analyzed; Then, the annular sealing plate 34 can be disassembled to clean the remaining drilling fluid inside.

[0018] Example 2: In some embodiments, such as Figure 5 As shown, in a preferred embodiment of the present invention, a disassembly ring 361 is fixedly installed on the outer end of the dispensing cylinder 36; both the rotating disk 35 and the disassembly ring 361 are provided with threaded grooves. In this utility model, the threaded groove on the disassembly ring 361 is aligned with the threaded groove on the rotating disk 35 and inserted, and then the locking bolt 362 is screwed into the threaded groove to achieve a detachable connection between the liquid separator 36 and the rotating disk 35.

[0019] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A drilling fluid sampling device for oil logging, comprising a fixed rod (1), characterized in that: It also includes a non-powered adaptive internal support mechanism (2) and a multi-station sampling mechanism (3); A non-powered adaptive internal support mechanism (2) for fixing the device to the drilling is installed in the middle of the fixed rod (1); The unpowered adaptive internal support mechanism (2) includes a drive component, a movable component, and a locking component; the drive component is connected to the fixed rod (1); the movable component is connected to the fixed rod (1) and the drive component; the locking component is installed on the fixed rod (1); A multi-station sampling mechanism (3) for drilling fluid sampling operations at different time periods is installed on the lower side of the fixed rod (1). The multi-station sampling mechanism (3) includes a rotating component, a collecting component and a sampling control component; the rotating component is connected to the fixed rod (1); multiple collecting components are connected to the rotating component; and the sampling control component is connected to the fixed rod (1).

2. The drilling fluid sampling device for oil logging as claimed in claim 1, characterized in that, The drive assembly includes a slip ring (21) and a drive support rod (22); the slip ring (21) is slidably mounted on the upper side of the outer end of the fixed rod (1); the upper ends of the multiple drive support rods (22) are hinged to the lower ends of the slip ring (21); the lower ends of the drive support rods (22) are connected to the movable assembly; and the slip ring (21) is connected to the locking assembly.

3. The drilling fluid sampling device for oil logging as claimed in claim 2, characterized in that, The movable component includes a first limiting support rod (23), a support plate (24), a second limiting support rod (28), and a fixing ring (25); the two fixing rings (25) are fixedly installed on the middle and lower sides of the outer end of the fixing rod (1); one end of the first limiting support rod (23) is hinged to the upper fixing ring (25); the other end of the first limiting support rod (23) is hinged to the middle of the inner wall of the support plate (24); One end of the second limiting support rod (28) is hinged to the lower fixing ring (25); the other end of the second limiting support rod (28) is hinged to the lower side of the inner wall of the support plate (24); The second limiting support rod (28) is arranged parallel to the first limiting support rod (23); The lower end of the drive support rod (22) is hinged to the upper side of the inner wall of the support plate (24); The locking assembly includes a locking ring (26) and a hook (27); two locking rings (26) are fixedly installed on the upper end of the slip ring (21); two hooks (27) are rotatably installed on the outer end of the fixed rod (1).

4. The drilling fluid sampling device for oil logging as claimed in claim 3, characterized in that, The rotating assembly includes a rotating shaft (31), a drive motor (32), a fixed plate (33), an annular sealing plate (34), and a rotating disk (35); the rotating shaft (31) is rotatably mounted inside the fixed rod (1); the drive motor (32) is fixedly mounted on the upper end of the fixed rod (1); the output end of the drive motor (32) is fixedly connected to the rotating shaft (31); The annular sealing plate (34) is detachably installed at the lower end of the fixing rod (1); The fixed plate (33) is fixedly connected to the middle of the annular sealing plate (34); the lower end of the rotating shaft (31) is rotatably connected to the fixed plate (33); The rotating disk (35) is rotatably mounted on the upper inner wall of the annular sealing plate (34); Furthermore, the upper end of the rotating disk (35) is rotatably connected to the lower end of the fixed rod (1); the rotating disk (35) is also connected to the collecting assembly; The rotating disk (35) is fixedly connected to the lower side of the outer end of the rotating shaft (31).

5. The drilling fluid sampling device for oil logging as claimed in claim 4, characterized in that, A liquid inlet (313) is provided on the right side of the fixing plate (33).

6. The drilling fluid sampling device for oil logging as claimed in claim 5, characterized in that, The rotating disk (35) has multiple mounting slots for placing the collection components.

7. The drilling fluid sampling device for oil logging as claimed in claim 6, characterized in that, The collection assembly includes a liquid separator (36), a liquid-taking piston (37), a core rod (38), a push plate (39), and a check valve (315); multiple liquid separators (36) are arranged in a circumferential array and are detachably mounted on a rotating disk (35) at equal intervals; and a check valve (315) is fixedly installed on the liquid inlet of each liquid separator (36). The upper end of the liquid separator (36) is provided with a vent hole; A sliding groove is provided in the middle of the separator (36), through which the liquid taking piston (37) is slidably connected to the separator (36) in the vertical direction; and a core rod (38) is fixedly installed at the upper end of the liquid taking piston (37); the upper end of the core rod (38) is fixedly connected to the push plate (39); the push plate (39) is connected to the sampling control component.

8. The drilling fluid sampling device for oil logging as claimed in claim 7, characterized in that, The sampling control component includes a liquid-taking push cylinder (310) and a pull rod (312); the liquid-taking push cylinder (310) is fixedly installed on the lower side of the outer end of the fixed rod (1); the output end of the liquid-taking push cylinder (310) is fixedly connected to the pull rod (312); the middle part of the pull rod (312) is in movable contact with the push plate (39).

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