A sampling device for mud logging oil detection and its sampling method

Abstract

The present invention discloses a sampling device and a sampling method for mud logging petroleum detection, which relates to the technical field of mud logging petroleum detection sampling. The sampling device and the sampling method for mud logging petroleum detection include a fixed frame, an impact mechanism is fixedly connected to the outer wall of the fixed frame, a rotating component is fixedly connected to the outer wall of the impact mechanism, a control component is fixedly connected to the outer wall of the rotating component, and a sampling mechanism is fixedly connected to the outer wall of the rotating component. The sampling device and the sampling method for mud logging petroleum detection, through the linkage design of the spiral plate and the telescopic shaft, when the spiral plate rotates and descends, it cuts into the soil layer in a spiral cutting manner, effectively reducing the direct vertical extrusion of the soil. At the same time, when the telescopic shaft contracts, the elastic deformation of the spiral plate is used to clamp the sample, avoiding the destruction of the soil pore structure caused by the columnar extrusion of the traditional tubular sampler, and maximizing the retention of the original moisture and petroleum component distribution in the soil.

Description

Technical Field

[0001] The present invention relates to the technical field of logging oil detection sampling, and specifically relates to a sampling device and a sampling method for logging oil detection. Background Technique

[0002] Logging oil sampling is an important link in the process of oil exploration and development. During the drilling process, through specific equipment and technologies, oil and related samples are collected from the wellbore. These samples can reflect information such as the lithology of underground formations and oil and gas shows. Usually, samples are taken at different depths and horizons to obtain comprehensive and accurate data. After sampling, the samples will be carefully analyzed, including observing their appearance, measuring physical properties, analyzing chemical compositions, etc., so as to provide key basis for judging the location, properties and reserves of oil and gas layers, and has important guiding significance for the exploration and development of oil resources;

[0003] The patent application with the publication number CN118583583B discloses an oil detection sampling device based on logging, belonging to the technical field of oil detection. The present invention includes a sampling main body and a sampling cylinder assembly. A transmission mechanism is provided between the sampling main body and the sampling cylinder assembly. The transmission mechanism includes a first transmission screw, a second transmission screw, a first connecting rod and a second connecting rod. The first transmission screw and the second transmission screw are both installed on the sampling main body. A first slider and a second slider are respectively threadedly driven and connected to the first transmission screw and the second transmission screw. The two ends of the first connecting rod are respectively hinged to the sampling cylinder assembly and the first slider, and the two ends of the second connecting rod are respectively hinged to the sampling cylinder assembly and the second slider. The first transmission screw and the second transmission screw can drive the first slider and the second slider to move in the same speed and in opposite directions to drive the sampling cylinder assembly to approach or move away from the sampling main body;

[0004] The above patent samples the oil near the inner wall of the tank, and the sampling result is more universal. However, in the sampling of logging oil detection, because a tubular object needs to be inserted into the ground, continuous extrusion causes the extrusion of the soil, and the extrusion will cause the moisture and oil in the soil to be squeezed out, resulting in a reduction in the detection accuracy of the sampling. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a sampling device and a sampling method for logging oil detection to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A sampling device for logging oil detection, including a fixed frame, an impact mechanism is fixedly connected to the outer wall of the fixed frame, a rotating component is fixedly connected to the outer wall of the impact mechanism, a control component is fixedly connected to the outer wall of the rotating component, a sampling mechanism is fixedly connected to the outer wall of the rotating component. The cooperation of the stroke control of the telescopic component and the rotation speed enables the spiral plate to maintain a uniform rotation and cut-in during the sampling process. Combined with the linear descent of the electric slider, a spiral progressive sampling trajectory is formed, reducing the soil volume compression compared with the traditional vertical impact sampling method and ensuring the preservation of the in-situ state of deep samples;

[0007] The sampling mechanism includes:

[0008] A telescopic component, which is fixedly connected to the bottom of the rotating component;

[0009] A telescopic shaft, which is movably connected to the bottom of the telescopic component;

[0010] A spiral plate, the top of which is rotatably connected to the outer wall of the telescopic component. The linkage design of the spiral plate and the telescopic shaft enables the spiral plate to cut into the soil layer in a spiral cutting manner during rotation and descent, effectively reducing the direct vertical extrusion of the soil. At the same time, when the telescopic shaft contracts, the elastic deformation of the spiral plate is used to clamp the sample, avoiding the destruction of the soil pore structure caused by the columnar extrusion of the traditional tubular sampler and maximizing the retention of the original moisture and oil component distribution in the soil;

[0011] A guiding component, which is fixedly connected to the outer wall of the rotating component.

[0012] Preferably, a connecting component is fixedly connected to the top of the rotating component.

[0013] Preferably, the top of the spiral plate is rotatably connected to the outer wall of the telescopic component through a first bearing.

[0014] Preferably, the guiding component includes a cylinder telescopic component, which is fixedly connected to the outer wall of the rotating component. A pulling rod is movably connected to the outer wall of the cylinder telescopic component, and the pulling rod is rotatably connected to the outer wall of the rotating component. The coordinated action of the guiding component and the spiral plate actively collects the loose soil samples between the pitches through the guiding shovel before sampling. With the control of the cylinder expansion and contraction, the sample is wrapped between the contracted spiral plates in a non-compressed state, avoiding the seepage of liquid components caused by the lateral extrusion force on the sample and significantly improving the sample fidelity.

[0015] Preferably, a guiding shovel is rotatably connected to the outer wall of the spiral plate. A fixing buckle is fixedly connected to the outer wall of the guiding shovel. A pulling rope is fixedly connected to the bottom of the pulling rod, and the pulling rope is inserted through the fixing buckle.

[0016] Preferably, a guiding shovel is rotatably connected to the outer wall of the spiral plate through a second bearing, and a limiting block is arranged at the bottom of the pulling rope.

[0017] Preferably, the impact mechanism includes a slide rail, the outer wall of the slide rail is fixedly connected to the outer wall of the fixed frame, an electric slider is slidably connected to the outer wall of the slide rail, the electric slider is fixedly connected to the outer wall of the rotating component, and the impact mechanism adopts a compressed gas pre-loosening technology. Before sampling, high-pressure gas is injected into the hole through the insertion pipe to increase the gap between soil particles and form a pre-loosened sampling environment, reducing the soil shear strength when the spiral plate cuts in and realizing a stepped operation of "loosening first and then sampling", reducing the secondary extrusion effect during the sampling process from the root cause.

[0018] Preferably, a compression chamber is fixedly connected to the outer wall of the fixed frame, one end of a zigzag pipe is fixedly connected to the top of the compression chamber, and the other end of the zigzag pipe is fixedly connected to an insertion pipe.

[0019] Preferably, the insertion pipe is fixedly connected to the outer wall of the rotating component, a bracket is fixedly connected between the rotating component and the top of the compression chamber, and a solenoid valve is fixedly connected to the position where the zigzag pipe is connected to the compression chamber.

[0020] A sampling method for a sampling device used in mud logging oil detection, the steps are as follows:

[0021] S1. Start the electric slider in the impact mechanism through the control component, make it descend along the slide rail, drive the rotating component and the sampling mechanism as a whole to move down to above the detection hole;

[0022] S2. Start the rotating component to drive the telescopic component to rotate, synchronously control the telescopic component to make the telescopic shaft extend, drive the spiral plate to rotate and descend into the detection hole. During this process, the spiral plate cuts into the soil layer through spiral cutting, reducing vertical extrusion;

[0023] S3. When the spiral plate descends to the target depth, start the cylinder telescopic component of the guiding component, pull the pulling rope through the pulling rod, and make the guiding shovel move towards the space between the pitches of the spiral plate to shovel loose soil and gravel into the pitch gap;

[0024] S4. Control the telescopic component to contract the telescopic shaft, and use the elastic deformation of the spiral plate to clamp the soil sample between the pitches;

[0025] S5. Start the electric slider to lift the rotating component and the sampling mechanism, and move the spiral plate clamping the sample out of the detection hole.

[0026] The present invention provides a sampling device and a sampling method for mud logging oil detection. It has the following beneficial effects:

[0027] 1. The sampling device and sampling method for logging oil detection adopts the linkage design of the spiral plate and the telescopic shaft. When the spiral plate rotates and descends, it cuts into the soil layer in a spiral cutting manner, effectively reducing the direct vertical extrusion of the soil. At the same time, when the telescopic shaft contracts, the elastic deformation of the spiral plate is used to clamp the sample, avoiding the destruction of the soil pore structure caused by the columnar extrusion of the traditional tubular sampler, and retaining the original moisture and oil component distribution in the soil to the maximum extent.

[0028] 2. The sampling device and sampling method for logging oil detection, through the synergistic effect of the guide assembly and the spiral plate, actively collects loose soil samples between the pitches through the guide shovel before sampling, and cooperates with the control of the extension and contraction of the cylinder to make the sample wrapped between the contracted spiral plates in a non-pressurized state, avoiding the liquid component of the sample from seeping out due to the lateral squeezing force, thereby significantly improving the fidelity of the sample.

[0029] 3. The sampling device for logging oil detection and the sampling method thereof adopt the compressed gas pre-loosening technology through the impact mechanism. Before sampling, high-pressure gas is injected into the hole through the insertion tube to increase the gap between soil particles, forming a pre-loose sampling environment, reducing the shear strength of the soil when the spiral plate cuts in, and realizing the step-by-step operation of "loosening first and then sampling", thereby reducing the secondary squeezing effect in the sampling process from the root.

[0030] 4. The sampling device and sampling method for logging petroleum detection, through the coordination of the travel control of the telescopic component and the rotation speed, enables the spiral plate to maintain a uniform rotation and cut-in during the sampling process, and forms a spiral progressive sampling trajectory in coordination with the linear descent of the electric slider. Compared with the traditional vertical impact sampling method, it reduces soil volume compression and ensures the preservation of the in-situ state of deep samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the axial side stereoscopic structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the local structure of the sampling mechanism of the present invention;

[0034] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle part A;

[0035] Figure 5 This is a schematic diagram of the local structure of the guide shovel of the present invention;

[0036] Figure 6 It is a schematic diagram of the local structure of the spiral plate of the present invention;

[0037] Figure 7 It is a schematic diagram of the partial structure of the guide assembly of the present invention;

[0038] Figure 8 This is a schematic diagram of the partial structure of the impact mechanism of the present invention.

[0039] In the figure: 1. Fixed frame; 2. Impact mechanism; 21. Slide rail; 22. Electric slider; 23. Compression chamber; 24. Solenoid valve; 25. Zigzag pipe; 26. Insertion pipe; 27. Bracket; 3. Control component; 4. Connection component; 5. Rotating component; 6. Sampling mechanism; 61. Telescopic component; 62. Telescopic shaft; 63. Spiral plate; 64. First bearing; 65. Guiding component; 651. Second bearing; 652. Guiding shovel; 653. Fixed buckle; 654. Pulling rope; 655. Pulling rod; 656. Cylinder telescopic component. Detailed implementation manners

[0040] 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.

[0041] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0042] Embodiment 1, please refer to Figures 1-7 , the present invention provides a technical solution: a sampling device for logging oil detection, including a fixed frame 1, an impact mechanism 2 is fixedly connected to the outer wall of the fixed frame 1, a rotating component 5 is fixedly connected to the outer wall of the impact mechanism 2, a control component 3 is fixedly connected to the outer wall of the rotating component 5, and a sampling mechanism 6 is fixedly connected to the outer wall of the rotating component 5;

[0043] After a hole with the required depth is drilled by logging oil equipment, the fixed frame 1 is arranged near the hole. The start and stop of each device can be controlled through the control component 3, and the connection component 4 can be connected to a crane for lifting the overall device;

[0044] The sampling mechanism 6 includes:

[0045] A telescopic component 61, and the telescopic component 61 is fixedly connected to the bottom of the rotating component 5;

[0046] A telescopic shaft 62, and the telescopic shaft 62 is movably connected to the bottom of the telescopic component 61;

[0047] A spiral plate 63, and the top of the spiral plate 63 is rotatably connected to the outer wall of the telescopic component 61;

[0048] The guiding component 65 is fixedly connected to the outer wall of the rotating component 5;

[0049] Combined with the attached Figure 3 As shown, the bottom of the spiral plate 63 is fixedly connected to the bottom of the telescopic shaft 62, so it can drive the rotation of the spiral plate 63.

[0050] The top of the rotating component 5 is fixedly connected with a connecting component 4;

[0051] When the rotating component 5 is powered on and started, it can drive the rotation of the telescopic component 61. During the rotation of the telescopic component 61, it will drive the rotation of the telescopic shaft 62 and the spiral plate 63. When the telescopic component 61 is powered on and started, the telescopic shaft 62 is in an extended state. The electric slider 22 is powered on and starts to descend on the slide rail 21, which will further drive the descent of the spiral plate 63. The spiral plate 63 rotates in the oil detection hole during the descent. The rotation of the spiral plate 63 avoids squeezing the soil. By controlling the control component 3, when it descends to a certain position, control the telescopic component 61 to drive the contraction of the telescopic shaft 62. The top position of the spiral plate 63 is restricted by the first bearing 64. Therefore, the contraction of the bottom position of the telescopic shaft 62 will drive the contraction of the spiral plate 63. The spiral plate 63 is made of elastic metal material, so it can contract elastically. When the spiral plate 63 contracts, it will clamp the soil, gravel, etc. between the pitches of the spiral plate 63;

[0052] The top of the spiral plate 63 is rotatably connected to the outer wall of the telescopic component 61 through a first bearing 64.

[0053] The guiding component 65 includes a cylinder telescopic component 656. The cylinder telescopic component 656 is fixedly connected to the outer wall of the rotating component 5. A pulling rod 655 is movably connected to the outer wall of the cylinder telescopic component 656, and the pulling rod 655 is rotatably connected to the outer wall of the rotating component 5.

[0054] The outer wall of the spiral plate 63 is rotatably connected to a guiding shovel 652. A fixing buckle 653 is fixedly connected to the outer wall of the guiding shovel 652. A pulling rope 654 is fixedly connected to the bottom of the pulling rod 655, and the pulling rope 654 is inserted into the fixing buckle 653.

[0055] The outer wall of the spiral plate 63 is rotatably connected to a guiding shovel 652 through a second bearing 651, and a limiting block is arranged at the bottom of the pulling rope 654.

[0056] Before the spiral plate 63 contracts, the cylinder telescopic component 656 starts to drive the movement of the pulling rod 655. During the movement of the pulling rod 655, it will pull the pulling rope 654, thereby driving the guiding shovel 652 to move closer to the spiral plate 63. When the guiding shovel 652 moves closer to the spiral plate 63, it will shovel up some soil, gravel, etc. and move them closer to the pitches of the spiral plate 63, and then the spiral plate 63 contracts to clamp them.

[0057] Example 2. Please refer to Figures 1-8 Based on Example 1, the present invention provides a technical solution:

[0058] The impact mechanism 2 includes a slide rail 21. The outer wall of the slide rail 21 is fixedly connected to the outer wall of the fixed frame 1. An electric slider 22 is slidably connected to the outer wall of the slide rail 21, and the electric slider 22 is fixedly connected to the outer wall of the rotating member 5.

[0059] A compression chamber 23 is fixedly connected to the outer wall of the fixed frame 1. One end of a zigzag pipe 25 is fixedly connected to the top of the compression chamber 23, and the other end of the zigzag pipe 25 is fixedly connected to an insertion pipe 26.

[0060] The insertion pipe 26 is fixedly connected to the outer wall of the rotating member 5. A bracket 27 is fixedly connected between the rotating member 5 and the top of the compression chamber 23. A solenoid valve 24 is fixedly connected to the position where the zigzag pipe 25 is connected to the compression chamber 23;

[0061] When the spiral plate 63 descends into the well logging detection hole, the electric slider 22 drives the descending of the rotating member 5, and then drives the contraction of the compression chamber 23 through the bracket 27. When continuously contracting, the gas in the compression chamber 23 will be squeezed. After the control component 3 controls the rotating member 5 to descend to a certain extent, the insertion pipe 26 will be inserted into the hole opened on the ground. By controlling the control component 3 to open the solenoid valve 24, the compressed gas in the compression chamber 23 impacts into the ground from the insertion pipe 26 at this time, thereby loosening the soil and improving the detection sampling accuracy;

[0062] The zigzag pipe 25 is made of an elastic material and will thus deform following the movement of the rotating member 5.

[0063] Example 3. Please refer to Figures 1-8 Based on Examples 1 and 2, the present invention provides a technical solution:

[0064] A sampling method for a sampling device for well logging oil detection, the steps are as follows

[0065] S1. Start the electric slider 22 in the impact mechanism 2 through the control component 3, so that it descends along the slide rail 21, driving the rotating member 5 and the sampling mechanism 6 as a whole to move down to above the detection hole;

[0066] S2. Start the rotating member 5 to drive the telescopic member 61 to rotate, and synchronously control the telescopic member 61 to extend the telescopic shaft 62, driving the spiral plate 63 to rotate and descend into the detection hole. During this process, the spiral plate 63 cuts into the soil layer through spiral cutting, reducing vertical extrusion;

[0067] S3. When the spiral plate 63 descends to the target depth, start the cylinder telescopic component 656 of the guiding component 65, pull the pulling rope 654 through the pulling rod 655, and move the guiding shovel 652 towards the pitch between the spiral plates 63 to scoop up loose soil and gravel into the pitch gap;

[0068] S4. Control the telescopic component 61 to contract the telescopic shaft 62, and use the elastic deformation of the spiral plate 63 to clamp the soil sample between the pitches;

[0069] S5. Start the electric slider 22 to lift the rotating component 5 and the sampling mechanism 6, and move the spiral plate 63 clamping the sample out of the detection hole.

[0070] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A sampling device for mud logging oil detection, comprising a fixed frame (1), characterized in that: The outer wall of the fixing frame (1) is fixedly connected with an impact mechanism (2), the outer wall of the impact mechanism (2) is fixedly connected with a rotating component (5), the outer wall of the rotating component (5) is fixedly connected with a control component (3), and the outer wall of the rotating component (5) is fixedly connected with a sampling mechanism (6); The sampling mechanism (6) includes: A telescopic component (61), which is fixedly connected to the bottom of the rotating component (5); A telescopic shaft (62), which is movably connected to the bottom of the telescopic component (61); A spiral plate (63), the top of which is rotatably connected to the outer wall of the telescopic component (61); A guiding component (65), which is fixedly connected to the outer wall of the rotating component (5). A connecting component (4) is fixedly connected to the top of the rotating component (5). The top of the spiral plate (63) is rotatably connected to the outer wall of the telescopic component (61) through a first bearing (64). The guiding component (65) includes a cylinder telescopic component (656), which is fixedly connected to the outer wall of the rotating component (5). A pulling rod (655) is movably connected to the outer wall of the cylinder telescopic component (656). The pulling rod (655) is rotatably connected to the outer wall of the rotating component (5). A guiding shovel (652) is rotatably connected to the outer wall of the spiral plate (63). A fixing buckle (653) is fixedly connected to the outer wall of the guiding shovel (652). A pulling rope (654) is fixedly connected to the bottom of the pulling rod (655). The pulling rope (654) is inserted into the fixing buckle (653). The guiding shovel (652) is rotatably connected to the outer wall of the spiral plate (63) through a second bearing (651). A limiting block is arranged at the bottom of the pulling rope (654). The bottom of the spiral plate (63) is fixedly connected to the bottom of the telescopic shaft (62). The spiral plate (63) is made of an elastic metal material.

2. The sampling device for mud logging oil detection according to claim 1, wherein: The impact mechanism (2) includes a slide rail (21), the outer wall of which is fixedly connected to the outer wall of the fixing frame (1). An electric slider (22) is slidably connected to the outer wall of the slide rail (21), and the electric slider (22) is fixedly connected to the outer wall of the rotating component (5).

3. The sampling device for mud logging petroleum detection according to claim 2, characterized in that: The outer wall of the fixing frame (1) is fixedly connected with a compression chamber (23). One end of a zigzag pipe (25) is fixedly connected to the top of the compression chamber (23). The other end of the zigzag pipe (25) is fixedly connected with an insertion pipe (26).

4. The sampling device for mud logging oil detection according to claim 3, characterized in that: The insertion pipe (26) is fixedly connected to the outer wall of the rotating component (5). A bracket (27) is fixedly connected between the rotating component (5) and the top of the compression chamber (23). A solenoid valve (24) is fixedly connected to the position where the zigzag pipe (25) is connected to the compression chamber (23).

5. The sampling method of a sampling device for mud logging oil detection according to claim 4, characterized in that: The steps are as follows: S1. Start the electric slider (22) in the impact mechanism (2) through the control component (3), so that it descends along the slide rail (21), driving the rotating component (5) and the sampling mechanism (6) as a whole to move downward to above the detection hole; S2. Start the rotation of the rotating component (5) to drive the telescopic component (61) to rotate, and synchronously control the telescopic component (61) to extend the telescopic shaft (62), driving the spiral plate (63) to rotate and descend into the detection hole. During this process, the spiral plate (63) cuts into the soil layer through spiral cutting, reducing vertical extrusion; S3. When the spiral plate (63) descends to the target depth, start the cylinder telescopic component (656) of the guiding component (65), pull the pulling rope (654) through the pulling rod (655), and move the guiding shovel (652) towards the pitch between the spiral plates (63) to shovel loose soil and gravel into the pitch gap; S4. Control the telescopic component (61) to contract the telescopic shaft (62), and use the elastic deformation of the spiral plate (63) to clamp the soil sample between the pitches; S5. Start the electric slider (22) to lift the rotating component (5) and the sampling mechanism (6), and move the spiral plate (63) clamping the sample out of the detection hole.

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