Oil and gas logging drilling fluid sampling device with inner wall convenient to clean

Abstract

The utility model discloses a petroleum and natural gas logging drilling fluid sampling device convenient to clean inner wall, which comprises a cart, the cart is directly arranged on the ground, the right side of the cart is provided with a height adjusting mechanism, the height adjusting mechanism comprises a sampling pipe, a sampling head, a fixed block, a movable rod, a fixed groove, a rotating rod, a fixed frame, a motor and a supporting block, a supporting block is fixedly installed on the upper portion of the right side of the trolley. According to the drilling fluid sampling device with the inner wall convenient to clean for petroleum and natural gas logging, by arranging the height adjusting mechanism, the height of the sampling head can be adjusted, sampling liquid of different heights can be sampled conveniently, meanwhile, the inner wall cleaning mechanism is arranged, the interior of the sampling barrel can be cleaned, the service life of the sampling barrel can be greatly prolonged, and the sampling device is convenient to use. In addition, a convenient-to-disassemble mechanism is arranged, so that the liquid collecting cylinder is convenient to disassemble and assemble and can be carried to different places, and convenience is provided for use of the liquid collecting cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling fluid sampling, in particular to a drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall. Background Technique

[0002] Oil and gas logging is an important concept in petroleum and natural gas geology. Logging is an important task during the petroleum exploration process, mainly responsible for collecting and sorting various relevant information during the drilling process to ensure the smooth progress of the drilling operation. During the existing petroleum logging process, it is necessary to sample and detect the drilling fluid. Currently, there are various centrifugal devices for collagen processing on the market, but there are still some drawbacks;

[0003] The existing drilling fluid sampling device for oil and gas logging samples the sampling fluid at different depths by setting multiple sampling air bags. If it is necessary to replace or detect the sampling air bags, it will be time-consuming. At the same time, the sampling bucket will contain a large amount of sticky substances after sampling the sampling fluid for a long time. If not processed, the service life of the sampling bucket will be shortened. In addition, generally, the liquid collection cylinder cannot be disassembled and cannot be transported to different locations, which is more troublesome to use. For example, the Chinese utility model patent with the authorization announcement number CN219265802U discloses a drilling fluid sampling device for oil and gas logging, including a connecting pipe. The connecting pipes respectively penetrate and are fixed to the upper and lower parts of the outer wall of the sampling bucket. The connecting pipes on the upper and lower sides are annularly distributed. The ends of the connecting pipes away from the sampling bucket are all threadedly connected with threaded pipes. In the utility model, during the drilling process, the drilling fluid surges inside the drilling channel, and the drilling fluid enters the sampling bucket through the opening. When the liquid level reaches the height of the lower connecting pipe, the lower one-way valve is started. Since the sampling air bag is in a negative pressure state when not sampling, the sample liquid inside the sampling bucket can be pumped into the sampling air bag to complete the sampling collection. The sampling air bags in the upper and lower parts can classify and collect the sampling fluids at different depths, improving the practicability of the sampling device. However, this device samples the sampling fluids at different depths by setting multiple sampling air bags. If it is necessary to replace or detect the sampling air bags, it will be time-consuming. At the same time, the sampling bucket will contain a large amount of sticky substances after sampling the sampling fluid for a long time. If not processed, the service life of the sampling bucket will be shortened. In addition, generally, the liquid collection cylinder cannot be disassembled and cannot be transported to different locations, which is more troublesome to use. Therefore, we propose a drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall to solve the problems mentioned above. Content of the Utility Model

[0004] The purpose of the present utility model is to provide a drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall, so as to solve the problems raised in the above background technology. For the current drilling fluid sampling device for oil and gas logging, multiple sampling air bags are set to sample the sampling fluid at different depths. If it is necessary to replace or detect the sampling air bags, it will consume a lot of time. At the same time, the sampling bucket will contain a large amount of sticky substances inside after sampling the sampling fluid for a long time. If not processed, the service life of the sampling bucket will be shortened. In addition, generally, the liquid collecting cylinder cannot be disassembled and cannot be transported to various different locations, which is rather troublesome to use.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall, comprising:

[0006] A trolley, which is directly placed on the ground;

[0007] It further includes:

[0008] An adjusting height mechanism is arranged on the right side of the trolley. The adjusting height mechanism includes a sampling pipe, a sampling head, a fixing block, a moving rod, a fixing groove, a rotating rod, a fixing frame, a motor and a supporting block. A supporting block is fixedly installed above the right side of the trolley, and a moving rod is slidably arranged inside the supporting block. A fixing block is fixedly arranged on the front side of the moving rod, and a sampling pipe is installed inside the fixing block;

[0009] A sampling bucket, and a cleaning internal mechanism is arranged inside the sampling bucket. The cleaning internal mechanism includes a filter screen, a connecting rod, an electric telescopic rod and a supporting frame. The filter screens are slidably arranged inside the sampling bucket at equal intervals. A connecting rod is fixedly connected to the outer side of the filter screen, an electric telescopic rod is fixedly connected to the right side of the filter screen, and a supporting frame is installed at the right end of the electric telescopic rod.

[0010] Preferably, the middle right side of the sampling bucket is connected with a sampling pipe, and a sampling head is fixedly connected below the sampling pipe.

[0011] Preferably, a fixing groove is installed above the moving rod, a rotating rod is slidably arranged at the rear side inside the fixing groove, the rotating rod is rotatably connected to the rear side of the fixing frame, and a motor is connected to the rear end of the rotating rod.

[0012] Preferably, a rotating shaft is rotatably installed inside the sampling bucket, stirring rods are symmetrically installed on the front and rear sides of the outer side of the rotating shaft, a motor is connected to the left end of the rotating shaft, and a filter screen is slidably arranged on the outer side of the rotating shaft.

[0013] Preferably, a liquid collecting cylinder is connected to the left side of the sampling bucket, and the liquid collecting cylinder is transparent.

[0014] Preferably, a vacuum pump is installed above the middle of the liquid collecting cylinder, and limiting plates are tightly attached symmetrically before and after on the outer side of the liquid collecting cylinder.

[0015] Preferably, threaded rods are fixedly installed on the outer sides of the limiting plates, and the threaded rods are connected to the stabilizing frames by means of threaded connections.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: for the drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall, by setting an adjusting height mechanism, the height of the sampling head can be adjusted, which is convenient for sampling the sampling liquid at different heights. At the same time, a cleaning inner wall mechanism is set, which can clean the inside of the sampling bucket, and can greatly improve the service life of the sampling bucket. In addition, a convenient disassembly mechanism is set, which can make the liquid collecting cylinder easy to disassemble and install, and can be transported to different locations, providing convenience for its use;

[0017] 1. A sampling tube, a sampling head, a fixed block and a moving rod are provided. By fixedly installing a support block on the right side of the trolley, a moving rod is arranged inside the support block, and a fixed groove is fixedly connected above the moving rod. A rotating rod is slidably arranged inside the fixed groove, and the rear side of the rotating rod is connected to a fixed frame for stability. When the motor connected to the rear end of the rotating rod is turned on, the motor will cause the rotating rod to rotate. The rotating rod will slide inside the fixed groove, and will push the moving rod to slide inside the support block. A fixed block is arranged on the front side of the moving rod and fixedly installs the sampling tube. The lower end of the sampling tube is connected to the sampling head. That is, when the moving rod moves, it can drive the sampling head to move up and down, which is convenient for sampling the sampling liquid at different heights;

[0018] 2. A sampling bucket and a filter screen are provided. By equidistantly arranging filter screens inside the sampling bucket, the filter screens can perform three-layer filtration on the sampling liquid entering the inside of the sampling bucket, so that when the sampling liquid enters the inside of the liquid collecting cylinder, there will be no impurities in the sampling liquid;

[0019] 3. A motor, a rotating shaft and a stirring rod are provided. By arranging a rotating shaft in the middle of the sampling bucket, the left side of the rotating shaft is connected to the motor. When the motor is turned on, the motor will cause the rotating shaft to rotate inside the sampling bucket. Secondly, stirring rods are symmetrically installed before and after on the outer side of the rotating shaft. That is, the stirring rods can stir the sampling liquid entering the inside of the sampling bucket as the rotating shaft rotates, avoiding the occurrence of sedimentation of the sampling liquid;

[0020] 4. A filter screen, a connecting rod, an electric telescopic rod and a support frame are provided. By fixedly installing a connected connecting rod on the outer side of the filter screen, the three filter screens inside the sampling bucket are connected together. At the same time, an electric telescopic rod is installed on the right side of the filter screen, and the right side of the electric telescopic rod is connected to the support frame for fixation. That is, when the electric telescopic rod is turned on, the output end of the electric telescopic rod can push the filter screen to move back and forth inside the sampling bucket. That is, the outer side of the filter screen is closely attached to the inside of the sampling bucket. When the filter screen moves, it can scrape the inner wall of the sampling bucket to clean the adhesives on the inner wall of the sampling bucket;

[0021] 5. A limit plate, a threaded rod and a stabilizing frame are provided. By symmetrically and closely attaching limit plates to the front and back of the lower outer side of the liquid collection cylinder, the outer side of the limit plate is connected to the threaded rod, and the threaded rod is threadedly connected to the stabilizing frame. That is, when turning the handle of the threaded rod, the threaded rod can be separated from the stabilizing frame, and then the threaded rod and the limit plate are pulled outward to make the limit plate also fall off from the liquid collection cylinder, so that the liquid collection cylinder can be carried and can be carried to different places, providing convenience for its use. Brief Description of the Drawings

[0022] Figure 1 It is a schematic perspective structure diagram of the present utility model;

[0023] Figure 2 It is a schematic perspective structure diagram of the connection of the moving rod, the fixed groove and the rotating rod of the present utility model;

[0024] Figure 3 It is a schematic perspective sectional structure diagram of the present utility model;

[0025] Figure 4 It is a schematic perspective structure diagram of the connection of the rotating rod, the fixed frame and the motor of the present utility model;

[0026] Figure 5 It is a schematic perspective structure diagram of the connection of the sampling tube, the sampling head and the fixing block of the present utility model;

[0027] Figure 6 It is a schematic perspective diagram of the connection of the liquid collection cylinder, the vacuum pump and the limit plate of the present utility model.

[0028] In the figure: 1, trolley; 2, sampling bucket; 3, sampling tube; 4, sampling head; 5, fixing block; 6, moving rod; 7, fixed groove; 8, rotating rod; 9, fixed frame; 10, motor; 11, support block; 12, filter screen; 13, connecting rod; 14, rotating shaft; 15, stirring rod; 16, liquid collection cylinder; 17, vacuum pump; 18, limit plate; 19, threaded rod; 20, stabilizing frame; 21, electric telescopic rod; 22, support frame. Detailed Description of the Embodiment

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-6 , the present invention provides a technical solution:

[0031] Embodiment 1: To solve the problems existing in the prior art, this embodiment adopts the following technical solution. A drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall is provided with a trolley 1; a height adjustment mechanism is arranged on the right side of the trolley 1, which can adjust the height of the sampling head 4 to facilitate sampling of sampling fluids at different heights; a cleaning inner wall mechanism is arranged on the inner wall of the sampling bucket 2, which can push the filter nets 12 equidistantly installed inside the sampling bucket 2, so that the filter nets 12 scrape the inner wall of the sampling bucket 2 to clean the inner wall of the sampling bucket 2; a convenient disassembly mechanism is arranged on the outer side of the liquid collection cylinder 16, which can separate the trolley 1 from the liquid collection cylinder 16 to facilitate transporting the liquid collection cylinder 16 to different locations; First, turn on the vacuum pump 17 arranged above the middle of the liquid collection cylinder 16. The vacuum pump 17 can suck out the air inside the liquid collection cylinder 16 and the sampling bucket 2. Then, turn on the motor 10 connected to the rear side of the rotating rod 8. The motor 10 will cause the rotating rod 8 to rotate. When the rotating rod 8 rotates, it will slide inside the fixed slot 7. At the same time, a moving rod 6 is connected below the fixed slot 7. That is, when the rotating rod 8 slides inside the fixed slot 7, the moving rod 6 can slide up and down inside the support block 11. At the same time, the front side of the moving rod 6 is bound to the sampling pipe 3 by a fixed block 5, and a sampling head 4 is installed at the lower end of the sampling pipe 3. That is, under the action of the moving rod 6, the sampling head 4 can be driven to move up and down to adjust the height of the sampling head 4. Through the suction of the vacuum pump 17, the sampling head 4 can suck the sampling fluid into the inside of the sampling bucket 2. At this time, turn on the motor 10 connected to the left end of the rotating shaft 14 arranged in the middle of the sampling bucket 2. That is, the rotating shaft 14 and the stirring rod 15 will rotate inside the sampling bucket 2 to stir the sampling fluid entering the sampling bucket 2 to prevent precipitation. In addition, filter nets 12 are equidistantly arranged inside the sampling bucket 2. The filter nets 12 are slidably connected to the rotating shaft 14, and the filter nets 12 can filter the sampling fluid. Secondly, connecting rods 13 are arranged between the filter nets 12 for connection. That is, turn on the electric telescopic rod 21 connected to the right side of the filter net 12. The output end of the electric telescopic rod 21 will push the filter net 12 to slide inside the sampling bucket 2 to clean the inner wall of the sampling bucket 2 to prevent adhesion of sticky substances. After the sampling fluid is filtered, it will enter the inside of the liquid collection cylinder 16. The liquid collection cylinder 16 is made transparent so that the amount of the collected sampling fluid can be observed at any time to prevent overflow. When the liquid collection cylinder 16 is full, since a limiting plate 18 is closely attached to the outer side below the liquid collection cylinder 16, and a threaded rod 19 is installed on the outer side of the limiting plate 18. That is, turn the handle of the threaded rod 19, and the threaded rod 19 will be detached from the stable frame 20. Then the limiting plate 18 will also be separated from the liquid collection cylinder 16, and the liquid collection cylinder 16 can be separated from the trolley 1 to facilitate transporting the liquid collection cylinder 16 to different locations.

[0032] For the existing sampling device, multiple sampling air bags are set to sample sampling fluids at different depths. If it is necessary to replace or detect the sampling air bags, it will consume a lot of time. For exampleFigure 1 , Figure 2 and Figure 5 As shown in Figure 1 , Figure 2 and Figure 5 , the height adjustment mechanism includes a support block 11 arranged above the right side of the trolley 1. A moving rod 6 is arranged inside the support block 11. A fixing groove 7 is fixedly connected above the moving rod 6. A rotating rod 8 is slidably arranged inside the fixing groove 7. The rear side of the rotating rod 8 is connected to a fixing frame 9 for stability. When the motor 10 connected to the rear end of the rotating rod 8 is turned on, the rotating rod 8 will rotate. The rotating rod 8 will slide inside the fixing groove 7, and will push the moving rod 6 to slide inside the support block 11. A fixing block 5 is arranged on the front side of the moving rod 6, and a sampling tube 3 is fixedly installed on the fixing block 5. The lower end of the sampling tube 3 is connected to a sampling head 4. That is, when the moving rod 6 moves, it can drive the sampling head 4 to move up and down, which is convenient for sampling the sampling liquid at different heights.

[0033] Embodiment 2: In the existing sampling device, a large amount of sticky substances will be contained inside the sampling bucket 2 after long-term sampling of the sampling liquid. If not processed, the service life of the sampling bucket 2 will be shortened. As Figure 3 , Figure 4 and Figure 6 shown, the inner wall cleaning mechanism includes filter nets 12 arranged at equal distances inside the sampling bucket 2. Connecting rods 13 are fixedly arranged on the outer sides of the filter nets 12. The three filter nets 12 inside the sampling bucket 2 are connected together by the connecting rods 13. At the same time, an electric telescopic rod 21 is installed on the right side of the filter net 12, and the right side of the electric telescopic rod 21 is connected to a support frame 22 for fixation. That is, when the electric telescopic rod 21 is turned on, the output end of the electric telescopic rod 21 can push the filter net 12 to move back and forth inside the sampling bucket 2. That is, the outer side of the filter net 12 is closely attached to the inside of the sampling bucket 2. When the filter net 12 moves, it can scrape the inner wall of the sampling bucket 2 to clean the sticky substances on the inner wall of the sampling bucket 2.

[0034] Embodiment 3: In the existing sampling device, generally the liquid collecting cylinder 16 cannot be disassembled and cannot be transported to different locations, which is rather troublesome to use. As Figure 1 , Figure 2 and Figure 6 shown, the disassembly facilitating mechanism includes limit plates 18 arranged on the outer sides below the front and rear of the liquid collecting cylinder 16. The outer sides of the limit plates 18 are connected to threaded rods 19, and the threaded rods 19 are threadedly connected to a stable frame 20. That is, when the handle of the threaded rod 19 is rotated, the threaded rod 19 can be disengaged from the stable frame 20. Then, the threaded rod 19 and the limit plate 18 are pulled outward to make the limit plate 18 also fall off from the liquid collecting cylinder 16, so that the liquid collecting cylinder 16 can be transported and can be transported to different locations.

[0035] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can all be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt the conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0036] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall, comprising: A trolley (1), and the trolley (1) is directly placed on the ground; Characterized in that it further comprises: An adjusting height mechanism is arranged on the right side of the trolley (1). The adjusting height mechanism includes a sampling tube (3), a sampling head (4), a fixing block (5), a moving rod (6), a fixing groove (7), a rotating rod (8), a fixing frame (9), a motor (10) and a support block (11). A support block (11) is fixedly installed above the right side of the trolley (1), and a moving rod (6) is slidably arranged inside the support block (11). A fixing block (5) is fixedly arranged on the front side of the moving rod (6), and a sampling tube (3) is installed inside the fixing block (5); A sampling bucket (2), and a cleaning inner mechanism is arranged inside the sampling bucket (2). The cleaning inner mechanism includes a filter screen (12), a connecting rod (13), an electric telescopic rod (21) and a support frame (22). The filter screen (12) is slidably arranged inside the sampling bucket (2) at equal intervals. A connecting rod (13) is fixedly connected to the outer side of the filter screen (12), and an electric telescopic rod (21) is fixedly connected to the right side of the filter screen (12). A support frame (22) is installed at the right end of the electric telescopic rod (21).

2. The drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall according to claim 1, wherein: The middle right side of the sampling bucket (2) is connected with a sampling tube (3), and a sampling head (4) is fixedly connected below the sampling tube (3).

3. The drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall according to claim 1, wherein: A fixing groove (7) is installed above the moving rod (6), and a rotating rod (8) is slidably arranged at the rear side inside the fixing groove (7). The rear side of the rotating rod (8) is rotatably connected to a fixing frame (9), and the rear end of the rotating rod (8) is connected to a motor (10).

4. A drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall, as described in claim 2, wherein: A rotating shaft (14) is rotatably installed inside the sampling bucket (2), and stirring rods (15) are symmetrically installed on the front and rear sides of the outer side of the rotating shaft (14). The left end of the rotating shaft (14) is connected to a motor (10), and a filter screen (12) is slidably arranged on the outer side of the rotating shaft (14).

5. The drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall according to claim 4, wherein: A liquid collecting cylinder (16) is connected to the left side of the sampling bucket (2), and the liquid collecting cylinder (16) is transparent.

6. The drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall according to claim 5, wherein: A vacuum pump (17) is installed above the middle of the liquid collecting cylinder (16), and limiting plates (18) are closely attached to the front and rear sides of the outer side of the liquid collecting cylinder (16).

7. The drilling fluid sampling device for oil and gas logging that is convenient for cleaning the inner wall according to claim 6, wherein: A threaded rod (19) is fixedly installed on the outer side of the limiting plate (18), and the threaded rod (19) is connected to the stabilizing frame (20) by a threaded connection.

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