Petroleum distribution sampling equipment for petroleum exploitation

Abstract

The invention provides petroleum distribution sampling equipment for petroleum exploitation, belongs to the technical field of petroleum exploitation sampling, and solves the technical problems that an obtained sample is not representative, a detection result is not pure, detection is not facilitated, the accuracy of the detection result is fuzzy and the like due to the fact that only a single point position of each layer is drilled and sampled in the prior art. The petroleum distribution sampling equipment for petroleum exploitation comprises a positioning mechanism, a machine body is arranged on the positioning mechanism, a control panel is fixed to the top of the machine body, three sampling mechanisms are arranged in the machine body, each sampling mechanism comprises a first mounting plate and a second mounting plate which are fixed in the machine body, and a motor is fixed to the side corner of the top of each first mounting plate; a lead screw is fixed to the output end of the motor, the lead screw rotates between the first mounting plate and the second mounting plate, a double-hole sliding plate is connected to the lead screw in a threaded mode, and a sliding rod vertically penetrates through the double-hole sliding plate. The invention has the advantage of improving the accuracy of the sampling result by multi-angle sampling on the same horizontal plane.

Description

Technical Field

[0001] The invention belongs to the technical field of oil mining sampling, and relates to a distributed sampling device, in particular to an oil distributed sampling device used in oil mining. Background Art

[0002] Oil distribution sampling is a crucial part of the oil extraction process, which involves the detailed exploration and analysis of underground oil resources.

[0003] After searching, for example, Chinese patent documents disclose a petroleum distribution sampling device for oil mining [Application No.: 202311344539.4; Publication No.: CN117213908B]. This oil distribution sampling device for oil mining can make the slider slide inside the slide slot, so that the slider can drive the second bevel gear to adjust the height, and use the motor to drive the support rod to rotate, so that the support rod drives the first bevel gear to rotate, and the meshing connection between the first bevel gear and the second bevel gear is used to drive the drill bit to drill the soil, so that the sampling device can be properly adjusted according to the thickness between different soil layers, avoiding the adjacent two storage chambers from taking out the soil of the same soil layer, and at the same time, the method of drilling the soil with the drill bit can avoid the sampling device from encountering stones and being damaged, thereby improving the service life of the sampling device.

[0004] Although the oil distribution sampling equipment disclosed in the patent can be appropriately adjusted according to the thickness of different soil layers, the oil distribution sampling equipment takes samples through a drill bit in a single direction and only drills a single point in each layer to take samples, resulting in unrepresentative samples and the possibility of impure test results, which is not conducive to detection and blurs the accuracy of test results. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems in the existing technology and to propose an oil distribution sampling device for oil mining. The technical problem to be solved by the invention is: how to achieve multi-angle sampling on the same horizontal plane to improve the accuracy of the sampling results.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A petroleum distribution sampling device for oil mining comprises a positioning mechanism, a fuselage is arranged on the positioning mechanism, a control panel is fixed on the top of the fuselage, three sampling mechanisms are arranged in the fuselage, the sampling mechanism comprises a first mounting plate and a second mounting plate fixed in the fuselage, a motor is fixed on the top side angle of the first mounting plate, a lead screw is fixed on the output end of the motor, the lead screw rotates between the first mounting plate and the second mounting plate, a double-hole sliding plate is threadedly connected on the lead screw, a sliding rod is vertically penetrated on the double-hole sliding plate, the sliding rod is fixed between the first mounting plate and the second mounting plate, a connecting rod is fixed at the bottom of the double-hole sliding plate, a round block is fixed at the bottom of the connecting rod, and a round block bottom is fixed at the bottom of the round block. Four circular rings are fixed on the body, a first ring is sleeved on the circular ring, a first pull rod is integrally formed on the first ring, a fixed plate is fixed at a position below the circular block in the fuselage, a vibration motor is fixed at the bottom of the fixed plate, a vibration plate is fixed at the output end of the vibration motor, a rotating wheel is connected to the vibration plate for rotation all around, a rotating arm is fixed on the rotating wheel, a rotating shaft is fixed at one end of the rotating arm away from the rotating wheel, fixed rings are fixed at both ends of the rotating shaft, connecting bent rods are integrally formed on the two fixing rings, a connecting circular plate is integrally formed between the two connecting bent rods, the connecting circular plate is fixedly connected to the first pull rod, a rotating part is sleeved on the rotating shaft, and a corrugated drill bit is fixed on the rotating part.

[0007] The working principle of the present invention is as follows: when it is necessary to adjust the position of the corrugated drill bit in a small range, the motor drives the lead screw to rotate, and the sliding rod is inserted into the double-hole sliding plate to prevent it from rotating with the lead screw. The limiting effect of the sliding rod causes the double-hole sliding plate and the lead screw to generate a threaded transmission rod, and the double-hole sliding plate can move up and down linearly between the first mounting plate and the second mounting plate. The connecting rod moves with the double-hole sliding plate, and the round block and the round ring move with the connecting rod. The first pull rod moves with the round ring through the first sleeve ring, and the rotating shaft moves with the first pull rod through the fixed ring, the connecting bent rod and the connecting round plate. The rotating arm drives the rotating wheel to rotate on the vibration plate with the rotating shaft, and the corrugated drill bit can achieve a small range of height adjustment through the rotating part and the rotating shaft, and the corrugated drill bit can also adjust the sampling alignment angle of the drill bit through the adjusting mechanism. The dynamic vibration plate vibrates, and the corrugated drill bit vibrates indirectly with the vibration plate. After receiving the vibration transmitted by the vibration motor, the unique corrugated structure of the corrugated drill bit begins to disturb and crush the soil layer. The vibration weakens the binding force between soil particles, making it easier for the drill bit to break and penetrate. A vibration motor drives the corrugated drill bits at multiple angles on the horizontal plane to break the soil and take samples, thereby increasing the sampling points in the same soil layer. During vibration, the gap between the first ring and the circular ring prevents the vibration from affecting the power source for adjusting the height, thereby achieving fine-tuning of the sampling point height and increasing the number of samples sampled in the same layer, making the test results of the test samples more representative, avoiding the influence of special impurities on the results at a certain sampling point in the same layer, and improving the accuracy of the sampling test results.

[0008] Gaskets and nuts are sleeved at both ends of the rotating shaft, a rotating member is arranged between the gasket and the nut, and a collecting mechanism is arranged on the rotating member.

[0009] With the above structure, the rotating shaft generates friction through the extrusion between the gaskets, and the rotation between the rotating part and the rotating shaft has a damping effect by tightening the nut, so that the angle of the collecting mechanism after adjustment under the operation of the adjustment mechanism has a temporary stop.

[0010] The collecting mechanism includes a fixed baffle frame fixed on the rotating member, the corrugated drill bit is located in the fixed baffle frame, first fixed blocks are fixed on three sides of the outer wall of the fixed baffle frame, a movable baffle frame is sleeved on one end of the fixed baffle frame away from the rotating member, second fixed blocks are fixed on three sides of the outer wall of the movable baffle frame, a spring is fixed between the second fixed block and the first fixed block, a second positioning groove is integrally formed on the lower inner wall of the fixed baffle frame, a fixed channel is slidably connected in the second positioning groove, a first positioning groove is integrally formed on the lower inner wall of the movable baffle frame, a movable wall is slidably connected in the first positioning groove, the movable wall contacts the inner wall of the fixed channel, a transmission cylinder is fixed at the bottom of the fixed channel, a bellows is fixed on one end of the transmission cylinder away from the fixed channel, a connecting plate is fixed on one end of the bellows away from the transmission cylinder, and a storage mechanism is arranged on the connecting plate.

[0011] With the above structure, the inner wall around the sampling hole is dug into a plane before sampling. The fixed channel is embedded in the second positioning groove and fixed by bolts. The movable wall is embedded in the first positioning groove and fixed by bolts. The fixed channel and the movable wall form a channel of the same-direction transmission tube. The corrugated drill bit contacts the soil layer through the sampling mechanism and the adjustment mechanism. At this time, the movable baffle frame contacts the well wall with the second fixed block under the restoring force of the spring. When the corrugated drill bit breaks the soil for sampling through the vibration motor, the fixed baffle frame and the movable baffle frame shield the top and both sides of the corrugated drill bit, and the soil layer sample passes through the fixed channel, the transmission tube, and the corrugated pipe in sequence. Entering the storage mechanism, the enclosing fixed baffle frame and the movable baffle frame prevent the surrounding ground-breaking work from affecting the samples with soil particles, thereby improving the purity of the samples and the accuracy of the sampling results. The bellows adopts a double inner sleeve with a corrugated section and an outer sleeve that are mutually nested and structured, which is beneficial to increase the compensation amount, reduce the thickness of the corrugated section and increase the axial stiffness, thereby achieving a vibration reduction effect and alleviating the impact of the vibration of the corrugated drill bit on the storage mechanism. At the same time, the bellows can reversely utilize the vibration of the corrugated drill bit to accelerate the transmission of the sampled sample in the bellows, and the vibration prevents the bellows from being blocked in the process.

[0012] An adjustment mechanism is arranged between the sampling mechanism and the collecting mechanism, and the adjustment mechanism comprises a second electric telescopic rod fixed at the center position of the top of the fixed plate, a cross steel ring is fixed on the top of the second electric telescopic rod, a second pull rod is movably connected to the cross steel ring, second rings are integrally formed at both ends of the second pull rod, the second pull rod is sleeved on the cross steel ring through a second ring located at the top and is movably connected to the cross steel ring, a hanging ear is sleeved on the second ring located at the bottom, and the number of the hanging ears is two, a sleeve is integrally formed between the two hanging ears, a third ring is sleeved on the other hanging ear, a third pull rod is integrally formed on the third ring, and the third pull rod is rotatably connected to the second fixed block.

[0013] With the above structure, the cross steel ring moves up and down with the extension and retraction of the second electric telescopic rod, the second pull rod moves with the cross steel ring through the second ring, the sleeve slides on the first pull rod through the hanging ear and the second ring, the third pull rod moves with the sleeve through the third ring and the hanging ear, the second fixed block rotates upward or downward with the third pull rod, the movable baffle frame and the fixed baffle frame move with the third pull rod, the rotating part rotates on the rotating shaft with the fixed baffle frame, the corrugated drill bit rotates with the rotating part to adjust the alignment angle, the rotation of the rotating arm and the rotating part can change the height of the sampling point, the height between the upper and lower three sampling mechanisms can be adjusted separately to adapt to soil layers of different thicknesses, and the spacing between the four corrugated drill bits can be reduced or expanded by rotating upward or downward to adapt to the inner diameter specifications of oil sampling wells of different specifications. The corrugated drill bit can be vertically aligned with the inner wall of the soil layer to improve the ground breaking efficiency.

[0014] The collecting mechanism is provided with a storage mechanism, which includes a fixed frame which is estimated to be located below the vibration plate in the fuselage, a connecting frame is fixed to the front end of the fixed frame, the inner wall of the connecting frame is adapted to the connecting plate, a storage basket is placed in the fixed frame, a limit strip is fixed in the storage basket, a baffle is slid between the limit strip and the storage basket, and through holes connected to the corrugated pipe are provided on the storage basket, the connecting frame and the fixed frame.

[0015] With the above structure, the bellows can slide into the connecting frame from top to bottom through the connecting plate, and then be installed and fixed after screwing in. The sample enters the storage basket through the bellows. After sampling, the storage basket can be taken out separately. The baffle can slide down in the limit bar and the fixed frame to cover the through hole of the storage basket to prevent the sample from leaking out. The storage basket can be taken out for subsequent sample testing. The detachable storage basket can directly take the sample away for testing, and the bellows, fixed channel, and movable wall can all be removed, which is convenient for cleaning after sampling to improve the accuracy of subsequent sampling results, and the detachable parts are convenient for maintenance and replacement, reducing costs.

[0016] A second magnetic plate is fixed below the side of the baffle plate that contacts the storage basket, a first magnetic plate is fixed on the inner wall of the fixed frame above the through hole, the first magnetic plate is slidably connected to the second magnetic plate, and a handle is fixed on the top of the storage basket near the connecting frame.

[0017] With the above structure, when the storage basket is inserted into the fixed frame from top to bottom, the first magnetic plate and the second magnetic plate attract each other, and the baffle is fixed above the through hole with the magnetic attraction of the second magnetic plate. When the storage basket is taken out, the storage basket moves up, and the position of the baffle remains unchanged, so that the baffle moves downward relatively to cover the through hole. The opening and covering of the through hole by the baffle are achieved by magnetic attraction, which is easy to operate.

[0018] The front and rear sides of the positioning mechanism are both provided with adjusting and fixing mechanisms, which include a rotating rod, the bottom end of which is rotatably connected to a grounding plate, and a ground cone is penetrated on the top of the grounding plate.

[0019] With the above structure, the grounding plate is brought into contact with the flat ground, and the rotation angle of the rotating rod is adjusted according to the height difference of the ground to keep the positioning mechanism horizontal, so that the fuselage can be vertically placed in the sampling well. After the adjustment is completed, the ground cone is nailed into the ground to achieve fixation, so as to adapt to more height differences of the ground.

[0020] The positioning mechanism includes two sliding rails that are symmetrical on the left and right. A threaded rod is rotatably connected in the sliding rail. A rotating knob is fixed at one end of the threaded rod. A sliding block is threadedly connected on the threaded rod. A first electric telescopic rod is rotatably connected to the top of the sliding block. A fixed seat is rotatably connected to the upper end of the first electric telescopic rod. The upper position of the fuselage is vertically penetrated on the fixed seat. The fuselage is fixedly connected to the fixed seat, and the rotating rod is rotatably connected to the sliding rail.

[0021] With the above structure, the height of the fixed seat changes with the extension and retraction of the first electric telescopic rod, the knob is turned, the threaded rod rotates with the knob, the slider generates threaded transmission with the threaded rod under the limit of the slide rail, the slider can move linearly left and right, and the fixed seat changes height with the first electric telescopic rod through the rotation adaptation of the first electric telescopic rod, and the fuselage changes height with the fixed seat, so that the fuselage can still change height after the ground cone is installed, avoiding damage to the soil layer caused by repeated disassembly and assembly of the ground cone, and the damage to the soil layer reduces the operational stability of the fuselage. After fixing, the height can still be adjusted without moving the ground cone, maintaining stability, and facilitating operation.

[0022] The threaded rod is rotatably connected to the slide rail via a bearing.

[0023] With the above structure, the bearing is a damping bearing. When the threaded rod rotates with the knob, the movable end of the bearing rotates with the threaded rod, and the fixed end and the slide rail remain relatively still, so that the rotation of the threaded rod is smoother. At the same time, its damping property makes the angle after rotation have temporary stopping property, thereby improving stability.

[0024] Compared with the prior art, the oil distribution sampling equipment used in oil mining has the following advantages: 1. The first pull rod in the sampling mechanism moves with the circular ring through the first ring, the rotating shaft moves with the first pull rod through the fixed ring, the connecting bent rod and the connecting circular plate, the rotating arm drives the rotating wheel to rotate on the vibration plate with the rotating shaft, the corrugated drill bit realizes a small range of height adjustment with the rotating shaft through the rotating member, and the corrugated drill bit can also adjust the sampling alignment angle of the drill bit through the adjustment mechanism, the vibration motor drives the vibration plate to vibrate, and the corrugated drill bit indirectly vibrates with the vibration plate. After receiving the vibration transmitted by the vibration motor, the unique corrugated structure of the corrugated drill bit begins to disturb and crush the soil layer, and the vibration weakens the binding force between the soil particles, making it easier to be crushed and penetrated by the drill bit, and a vibration motor drives the corrugated drill bits at multiple angles on the horizontal plane to break the soil and sample, thereby increasing the sampling points of the same soil layer, and during vibration, the gap between the first ring and the circular ring avoids the vibration from affecting the power source for adjusting the height, which not only realizes the fine adjustment of the height of the sampling point, but also increases the number of samples sampled in the same layer, so that the test results of the test samples are more representative, and avoids the special impurities in a certain sampling point in the same layer from affecting the results, thereby improving the accuracy of the sampling test results.

[0025] 2. When the corrugated drill bit breaks the soil and takes samples through the vibration motor, the top and both sides of the corrugated drill bit are shielded by the fixed baffle frame and the movable baffle frame in the collecting mechanism, and the soil samples are passed through the fixed channel, the transmission cylinder and the bellows into the storage mechanism in turn. The enclosing fixed baffle frame and the movable baffle frame prevent the surrounding soil breaking work from affecting the samples with soil particles, thereby improving the purity of the samples and the accuracy of the sampling results. The bellows adopts a double inner sleeve with a corrugated section and an outer sleeve that are mutually nested and structured, which is conducive to increasing the compensation amount, reducing the thickness of the corrugated section and improving the axial stiffness, thereby achieving a vibration reduction effect and alleviating the influence of the vibration of the corrugated drill bit on the storage mechanism. At the same time, the bellows can reversely utilize the vibration of the corrugated drill bit to accelerate the transmission of the sampled sample in the bellows, and the vibration plays a role in preventing the bellows from being blocked in the process.

[0026] 3. The cross steel ring in the adjustment mechanism moves up and down with the extension and retraction of the second electric telescopic rod, the second pull rod moves with the cross steel ring through the second ring, the sleeve slides on the first pull rod through the hanging ear and the second ring, the third pull rod moves with the sleeve through the third ring and the hanging ear, the second fixed block rotates upward or downward with the third pull rod, the movable baffle frame and the fixed baffle frame move with the third pull rod, the rotating part rotates on the rotating shaft with the fixed baffle frame, the corrugated drill bit rotates with the rotating part to adjust the alignment angle, the rotation of the rotating arm and the rotating part can change the height of the sampling point, the height between the upper and lower three sampling mechanisms can be adjusted separately to adapt to soil layers of different thicknesses, and the spacing between the four corrugated drill bits can be reduced or expanded by rotating upward or downward to adapt to the inner diameter specifications of oil sampling wells of different specifications. The corrugated drill bit can be vertically aligned with the inner wall of the soil layer to improve the earth breaking efficiency.

[0027] 4. The bellows is passed through the connecting plate and slid into the connecting frame from top to bottom, and then the screws are screwed in to realize installation and fixing. The sample enters the storage basket through the bellows. After sampling, the storage basket can be taken out separately. The baffle can slide down in the limit bar and the fixed frame to block the through hole of the storage basket to prevent the sample from leaking out. The storage basket can be taken out for subsequent sample testing. The detachable storage basket can directly take the sample away for testing, and the bellows, fixed channel, and movable wall can be removed, which is convenient for cleaning after sampling to improve the accuracy of subsequent sampling results. The parts are detachable for easy maintenance and replacement, and reduce costs. In the process of inserting the storage basket into the fixed frame from top to bottom, the first magnetic plate and the second magnetic plate are attracted to each other, and the baffle is magnetically fixed above the through hole with the second magnetic plate. When the storage basket is taken out, the storage basket moves up, and the position of the baffle remains unchanged, so that the baffle moves downward relatively to block the through hole, and the opening and blocking of the through hole by the baffle are realized by magnetic attraction, which is easy to operate.

[0028] 5. Through the rotation adaptation of the first electric telescopic rod, the fixed seat changes height with the first electric telescopic rod, and the fuselage changes height with the fixed seat, so that the height of the fuselage can still be changed after the ground cone is installed, avoiding damage to the soil layer caused by repeated disassembly and assembly of the ground cone. The soil layer is damaged, thereby reducing the operational stability of the fuselage. After fixing, the height can still be adjusted without moving the ground cone, maintaining stability and facilitating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention.

[0030] Figure 2 It is a structural schematic diagram of the sampling mechanism part in the present invention.

[0031] Figure 3 It is a structural schematic diagram of the fuselage part in the present invention.

[0032] Figure 4 yes Figure 3 A magnified view of the structure at center.

[0033] Figure 5 It is a structural schematic diagram of the vibration motor part in the present invention.

[0034] Figure 6 It is a structural schematic diagram of the regulating mechanism part in the present invention.

[0035] Figure 7 It is a structural schematic diagram of the rotating shaft part of the present invention.

[0036] Figure 8 It is a schematic structural diagram of the rotating wheel part of the present invention.

[0037] Fig. 9 It is a structural schematic diagram of the collecting mechanism part in the present invention.

[0038] Fig.10It is a schematic longitudinal section diagram of the structure of the fixed baffle frame part in the present invention.

[0039] Fig.11 It is a schematic longitudinal section diagram of the structure of the storage mechanism part in the present invention.

[0040] Fig.12 It is a schematic diagram of the structural explosion of the storage mechanism part in the present invention.

[0041] Fig.13 It is a schematic longitudinal section diagram of the structure of the adjusting and fixing mechanism part in the present invention.

[0042] Fig.14 It is a schematic diagram of the longitudinal section of the structure of the slide rail part of the present invention.

[0043] In the figure, 1, positioning mechanism; 101, slide rail; 102, threaded rod; 103, knob; 104, slider; 105, bearing; 106, first electric telescopic rod; 107, fixed seat; 2, adjustment and fixing mechanism; 201, rotating rod; 202, grounding plate; 203, ground cone; 3, fuselage; 4, control panel; 5, sampling mechanism; 501, first mounting plate; 502, motor; 503, lead screw; 504 , second mounting plate; 505, sliding rod; 506, double-hole sliding plate; 507, connecting rod; 508, round block; 509, ring; 510, first pull rod; 511, first sleeve ring; 512, connecting bent rod; 513, fixing ring; 514, rotating shaft; 515, rotating member; 516, gasket; 517, nut; 518, fixing plate; 519, vibration motor; 520, vibration plate; 521, rotating wheel; 5 22. Corrugated drill bit; 523. Rotating arm; 524. Connecting circular plate; 6. Adjusting mechanism; 601. Second electric telescopic rod; 602. Cross steel ring; 603. Second sleeve ring; 604. Second pull rod; 605. Sleeve; 606. Hanging ear; 607. Third sleeve ring; 608. Third pull rod; 7. Collecting mechanism; 701. Fixed baffle frame; 702. First fixed block; 703. Second fixed block; 704. Spring; 705, movable baffle frame; 706, movable wall; 707, first positioning groove; 708, fixed channel; 709, second positioning groove; 710, transmission cylinder; 711, bellows; 712, connecting plate; 8, storage mechanism; 801, fixed frame; 802, connecting frame; 803, first magnetic plate; 804, storage basket; 805, handle; 806, baffle; 807, second magnetic plate; 808, limit strip. DETAILED DESCRIPTION

[0044] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0045] like Figure 1-Figure 14As shown, the oil distribution sampling equipment used in the oil mining comprises a positioning mechanism 1, a fuselage 3 is arranged on the positioning mechanism 1, a control panel 4 is fixed on the top of the fuselage 3, three sampling mechanisms 5 are arranged in the fuselage 3, the sampling mechanism 5 comprises a first mounting plate 501 and a second mounting plate 504 fixed in the fuselage 3, a motor 502 is fixed on the top side angle of the first mounting plate 501, a lead screw 503 is fixed on the output end of the motor 502, the lead screw 503 rotates between the first mounting plate 501 and the second mounting plate 504, a double-hole sliding plate 506 is threadedly connected to the lead screw 503, a sliding rod 505 is vertically penetrated on the double-hole sliding plate 506, the sliding rod 505 is fixed between the first mounting plate 501 and the second mounting plate 504, a connecting rod 507 is fixed at the bottom of the double-hole sliding plate 506, a round block 508 is fixed at the bottom of the connecting rod 507, and four rings 50 are fixed at the bottom of the round block 508. 9. A first ring 511 is sleeved on the circular ring 509, and a first pull rod 510 is integrally formed on the first ring 511. A fixing plate 518 is fixed at a position below the circular block 508 in the fuselage 3. A vibration motor 519 is fixed to the bottom of the fixing plate 518. A vibration plate 520 is fixed to the output end of the vibration motor 519. A rotating wheel 521 is rotatably connected to the vibration plate 520. A rotating arm 523 is fixed to the rotating wheel 521. A rotating shaft 514 is fixed to one end of the rotating arm 523 away from the rotating wheel 521. Fixing rings 513 are fixed at both ends of the rotating shaft 514. Connecting bent rods 512 are integrally formed on the two fixing rings 513. A connecting circular plate 524 is integrally formed between the two connecting bent rods 512. The connecting circular plate 524 is fixedly connected to the first pull rod 510. A rotating member 515 is sleeved on the rotating shaft 514, and a corrugated drill bit 522 is fixed to the rotating member 515.

[0046] In this embodiment, the motor 502, the vibration motor 519 and the control panel 4 are electrically connected. When the position of the corrugated drill bit 522 needs to be adjusted in a small range, the motor 502 drives the lead screw 503 to rotate, and the slide bar 505 is passed through the double-hole sliding plate 506 to prevent it from rotating with the lead screw 503. The limiting effect of the slide bar 505 causes the double-hole sliding plate 506 and the lead screw 503 to generate a threaded transmission rod, so that the double-hole sliding plate 506 can be moved up and down between the first mounting plate 501 and the second mounting plate 504. The connecting rod 507 moves with the double-hole sliding plate 506, the round block 508 and the ring 509 move with the connecting rod 507, the first pull rod 510 moves with the ring 509 through the first ring 511, the rotating shaft 514 moves with the first pull rod 510 through the fixing ring 513, the connecting bent rod 512 and the connecting circular plate 524, the rotating arm 523 drives the rotating wheel 521 to rotate on the vibration plate 520 with the rotating shaft 514, and the corrugated drill bit 522 moves with the rotating shaft 514 through the rotating member 515. 4 can realize small range adjustment of height, and the corrugated drill 522 can also adjust the sampling alignment angle of the drill through the adjustment mechanism 6, the vibration motor 519 drives the vibration plate 520 to vibrate, and the corrugated drill 522 indirectly vibrates with the vibration plate 520, and after receiving the vibration transmitted by the vibration motor 519, the corrugated drill 522 begins to disturb and crush the soil layer with its unique corrugated structure, and the vibration weakens the binding force between the soil particles, so that it is easier to be crushed and penetrated by the drill, and a vibration motor 519 drives the corrugated drill 522 at multiple angles on the horizontal plane to break the soil and sample, so as to increase the sampling points of the same soil layer, and during vibration, the gap between the first ring 511 and the circular ring 509 avoids the influence of vibration on the power source for adjusting the height, so as to realize the fine adjustment of the height of the sampling point and increase the number of samples sampled in the same layer, so that the detection results of the detection samples are more representative, and avoid the influence of special impurities on the results of a certain sampling point in the same layer, thereby improving the accuracy of the sampling detection results.

[0047] Washers 516 and nuts 517 are sleeved on both ends of the rotating shaft 514 . The rotating member 515 is arranged between the washers 516 and the nuts 517 . The collecting mechanism 7 is arranged on the rotating member 515 .

[0048] In this embodiment, the rotating shaft generates friction through the extrusion between the gaskets 516 and the gaskets 516, and the rotation between the rotating member 515 and the rotating shaft 514 has a damping effect by tightening the nut 517, so that the angle of the collecting mechanism 7 after adjustment under the operation of the adjusting mechanism 6 has a temporary stop function.

[0049] The collecting mechanism 7 includes a fixed baffle 701 fixed on the rotating member 515, the corrugated drill bit 522 is located in the fixed baffle 701, the three sides of the outer wall of the fixed baffle 701 are fixed with a first fixed block 702, the end of the fixed baffle 701 away from the rotating member 515 is sleeved with a movable baffle 705, the three sides of the outer wall of the movable baffle 705 are fixed with a second fixed block 703, a spring 704 is fixed between the second fixed block 703 and the first fixed block 702, and a second positioning groove 709 is integrally formed at the lower inner wall of the fixed baffle 701. A fixed channel 708 is slidably connected in the second positioning groove 709, a first positioning groove 707 is integrally formed on the lower inner wall of the movable baffle frame 705, a movable wall 706 is slidably connected in the first positioning groove 707, the movable wall 706 is in contact with the inner wall of the fixed channel 708, a transmission cylinder 710 is fixed to the bottom of the fixed channel 708, a bellows 711 is fixed to the end of the transmission cylinder 710 away from the fixed channel 708, a connecting plate 712 is fixed to the end of the bellows 711 away from the transmission cylinder 710, and a storage mechanism 8 is provided on the connecting plate 712.

[0050] In this embodiment, the inner walls around the sampling hole are dug into a plane before sampling, the fixed channel 708 is embedded in the second positioning groove 709 and then fixed by bolts, the movable wall 706 is embedded in the first positioning groove 707 and then fixed by bolts, the fixed channel 708 and the movable wall 706 form a channel for the same-direction transmission tube 710, the corrugated drill bit 522 is made to contact the soil layer through the sampling mechanism 5 and the adjustment mechanism 6, at this time, the movable baffle frame 705 contacts the well wall with the second fixed block 703 under the restoring force of the spring 704, when the corrugated drill bit 522 breaks the soil for sampling through the vibration motor 519, the fixed baffle frame 701 and the movable baffle frame 705 shield the top and both sides of the corrugated drill bit 522, and the soil layer samples are sequentially passed through the fixed channel 708, transmission tube 710, and bellows 711 enter the storage mechanism 8. The enclosing fixed baffle frame 701 and the movable baffle frame 705 prevent the surrounding ground-breaking work from causing soil particles to affect the sample, thereby improving the sample purity and the accuracy of the sampling results. The bellows 711 adopts a double inner sleeve with a corrugated section and an outer sleeve that are mutually nested and structured, which is beneficial to increase the compensation amount, reduce the thickness of the corrugated section and improve the axial stiffness, thereby achieving a vibration reduction effect, alleviating the impact of the vibration of the corrugated drill bit 522 on the storage mechanism 8. At the same time, the bellows 711 can reversely utilize the vibration of the corrugated drill bit 522 to accelerate the transmission of the sampled sample in the bellows 711, and the vibration plays a role in preventing the bellows 711 from being blocked in the process.

[0051] An adjustment mechanism 6 is arranged between the sampling mechanism 5 and the collecting mechanism 7. The adjustment mechanism 6 includes a second electric telescopic rod 601 fixed at the center of the top of the fixed plate 518. A cross steel ring 602 is fixed on the top of the second electric telescopic rod 601. A second pull rod 604 is movably connected to the cross steel ring 602. Second sleeve rings 603 are integrally formed at both ends of the second pull rod 604. The second pull rod 604 is sleeved on the cross steel ring 602 through the second sleeve ring 603 located at the top and is movably connected to the cross steel ring 602. A hanging ear 606 is sleeved on the second sleeve ring 603 located at the bottom. There are two hanging ears 606. A sleeve 605 is integrally formed between the two hanging ears 606. The sleeve 605 is sleeved on the first pull rod 510. A third sleeve ring 607 is sleeved on the other hanging ear 606. A third pull rod 608 is integrally formed on the third sleeve ring 607. The third pull rod 608 is rotatably connected to the second fixed block 703.

[0052] In this embodiment, the second electric telescopic rod 601 is electrically connected to the control panel 4, and both are prior arts. The cross steel ring 602 moves up and down with the extension and retraction of the second electric telescopic rod 601. The second pull rod 604 moves with the cross steel ring 602 through the second ring 603. The sleeve 605 slides on the first pull rod 510 with the second ring 603 through the ear 606. The third pull rod 608 moves with the sleeve 605 through the third ring 607 and the ear 606. The second fixed block 703 rotates upward or downward with the third pull rod 608. The movable baffle frame 705 and the fixed baffle frame 706 are 01 moves with the third pull rod 608, the rotating member 515 rotates on the rotating shaft 514 with the fixed baffle frame 701, and the corrugated drill bit 522 rotates with the rotating member 515 to adjust the alignment angle. The rotation of the rotating arm 523 and the rotating member 515 can change the height of the sampling point. The heights between the upper and lower three sampling mechanisms 5 can be adjusted separately to adapt to soil layers of different thicknesses. The spacing between the four corrugated drill bits 522 can also be reduced or expanded by rotating upward or downward to adapt to the inner diameter specifications of oil sampling wells of different specifications. The corrugated drill bit 522 can be vertically aligned with the inner wall of the soil layer to improve the earth breaking efficiency.

[0053] A storage mechanism 8 is provided on the collecting mechanism 7, and the storage mechanism 8 includes a fixed frame 801 which is estimated to be located below the vibration plate 520 in the fuselage 3, a connecting frame 802 is fixed to the front end of the fixed frame 801, and the inner wall of the connecting frame 802 is adapted to the connecting plate 712, a storage basket 804 is placed in the fixed frame 801, a limiting strip 808 is fixed in the storage basket 804, a baffle 806 is slid between the limiting strip 808 and the storage basket 804, and through holes connected to the bellows 711 are opened on the storage basket 804, the connecting frame 802 and the fixed frame 801.

[0054] In this embodiment, the bellows 711 can slide into the connecting frame 802 from top to bottom through the connecting plate 712, and then be installed and fixed after the screws are screwed in. The sample enters the storage basket 804 through the bellows 711. After sampling, the storage basket 804 can be taken out separately. The baffle 806 can slide down in the limit bar 808 and the fixed frame 801 to block the through hole of the storage basket 804 to prevent the sample from leaking out. The storage basket 804 can be taken out for subsequent sample testing. The detachable storage basket 804 can directly take the sample away for testing, and the bellows 711, the fixed channel 708, and the movable wall 706 can all be removed, which is convenient for cleaning after sampling to improve the accuracy of subsequent sampling results, and the detachable parts are convenient for maintenance and replacement, thereby reducing costs.

[0055] A second magnetic plate 807 is fixed to the lower side of the baffle 806 that contacts the storage basket 804, a first magnetic plate 803 is fixed to the inner wall of the fixed frame 801 above the through hole, the first magnetic plate 803 is slidably connected to the second magnetic plate 807, and a handle 805 is fixed to the top of the storage basket 804 near the connecting frame 802.

[0056] In this embodiment, when the storage basket 804 is inserted into the fixed frame 801 from top to bottom, the first magnetic plate 803 and the second magnetic plate 807 attract each other, and the baffle 806 is magnetically fixed above the through hole along with the second magnetic plate 807. When the storage basket 804 is taken out, the storage basket 804 moves up, and the position of the baffle 806 remains unchanged, so that the baffle 806 moves downward relatively to cover the through hole, and the opening and covering of the through hole by the baffle 806 are realized by magnetic attraction, which is easy to operate.

[0057] Adjustment and fixing mechanisms 2 are provided on both the front and rear sides of the positioning mechanism 1 . The adjustment and fixing mechanisms 2 include a rotating rod 201 . The bottom end of the rotating rod 201 is rotatably connected to a grounding plate 202 . A ground cone 203 is passed through the top of the grounding plate 202 .

[0058] In this embodiment, the grounding plate 202 is brought into contact with the flat ground, and the rotation angle of the rotating rod 201 is adjusted according to the height difference of the ground to keep the positioning mechanism 1 horizontal, so that the fuselage 3 can be vertically placed in the sampling well. After the adjustment is completed, the ground cone 203 is nailed in to achieve fixation to adapt to more height differences of the ground.

[0059] The positioning mechanism 1 includes two symmetrical slide rails 101, a threaded rod 102 is rotatably connected inside the slide rail 101, a rotating knob 103 is fixed at one end of the threaded rod 102, a slider 104 is threadedly connected to the threaded rod 102, a first electric telescopic rod 106 is rotatably connected to the top of the slider 104, a fixed seat 107 is rotatably connected to the upper end of the first electric telescopic rod 106, the upper part of the fuselage 3 is vertically penetrated on the fixed seat 107, the fuselage 3 is fixedly connected to the fixed seat 107, and the rotating rod 201 is rotatably connected to the slide rail 101.

[0060] In this embodiment, the height of the fixed seat 107 changes with the extension and retraction of the first electric telescopic rod 106. The knob 103 is turned, and the threaded rod 102 rotates with the knob 103. The slider 104 generates a threaded transmission with the threaded rod 102 under the limit of the slide rail 101. The slider 104 can move linearly left and right. Through the rotation adaptation of the first electric telescopic rod 106, the fixed seat 107 changes the height with the first electric telescopic rod 106, and the fuselage 3 changes the height with the fixed seat 107, so that the fuselage 3 can still change the height after the ground cone 203 is installed, avoiding the damage of the soil layer caused by repeated disassembly and assembly of the ground cone 203. The soil layer is damaged, thereby reducing the operational stability of the fuselage 3. After fixing, the height can still be adjusted without moving the ground cone 203, maintaining stability, and facilitating operation.

[0061] The threaded rod 102 is rotatably connected to the slide rail 101 via a bearing 105. In the present embodiment, the bearing 105 is a damping bearing. When the threaded rod 102 rotates with the turning knob 103, the movable end of the bearing 105 rotates with the threaded rod 102, while the fixed end remains relatively still with the slide rail 101, so that the rotation of the threaded rod 102 is smoother. At the same time, its damping property enables the angle after rotation to have a temporary stop property, thereby improving stability.

[0062] The working principle of the present invention is as follows: the grounding plate 202 is brought into contact with the flat ground, and the rotation angle of the rotating rod 201 is adjusted according to the height difference of the ground, so that the positioning mechanism 1 remains horizontal, so that the fuselage 3 can be vertically placed in the sampling well. After the adjustment is completed, the ground cone 203 is nailed in for fixation, and the height of the fixing seat 107 changes with the extension and retraction of the first electric telescopic rod 106. The turning knob 103 is turned, and the threaded rod 102 rotates with the turning knob 103. The slider 104 generates a threaded transmission with the threaded rod 102 under the limit of the slide rail 101, and the slider 104 can move linearly left and right. Through the rotation adaptation of the first electric telescopic rod 106, the fixing seat 107 changes height with the first electric telescopic rod 106, and the fuselage 3 changes height with the fixing seat 107, so that the fuselage 3 can still change height after the ground cone 203 is installed. When the position of the corrugated drill bit 522 needs to be adjusted within a small range, the motor 502 drives the lead screw 503 to rotate, and the slide bar 505 is inserted into the double-hole sliding plate 506 to prevent it from rotating with the lead screw 503. The limiting effect of the slide bar 505 causes the double-hole sliding plate 506 and the lead screw 503 to generate a threaded transmission rod, so that the double-hole sliding plate 506 can move up and down linearly between the first mounting plate 501 and the second mounting plate 504. The connecting rod 507 moves with the double-hole sliding plate 506, the round block 508 and the ring 509 both move with the connecting rod 507, the first pull rod 510 moves with the ring 509 through the first ring 511, the rotating shaft 514 moves with the first pull rod 510 through the fixing ring 513, the connecting bent rod 512 and the connecting circular plate 524, and the rotating arm 523 moves with the rotating shaft 5 14 drives the rotating wheel 521 to rotate on the vibration plate 520, the corrugated drill bit 522 can achieve a small range of height adjustment with the rotating shaft 514 through the rotating member 515, and the corrugated drill bit 522 can also adjust the sampling alignment angle of the drill bit through the adjusting mechanism 6, the cross steel ring 602 moves up and down with the extension and retraction of the second electric telescopic rod 601, the second pull rod 604 moves with the cross steel ring 602 through the second ring 603, the sleeve 605 slides on the first pull rod 510 with the second ring 603 through the hanging ear 606, the third pull rod 608 moves with the sleeve 605 through the third ring 607 and the hanging ear 606, the second fixed block 703 rotates upward or downward with the third pull rod 608, the movable baffle frame 705 and the fixed baffle frame 701 move with the third pull rod 608, and the rotation The member 515 rotates on the rotating shaft 514 along with the fixed baffle 701, and the corrugated drill bit 522 rotates along with the rotating member 515 to adjust the alignment angle. The rotation of the rotating arm 523 and the rotating member 515 can change the height of the sampling point. The heights between the upper and lower three sampling mechanisms 5 can be adjusted respectively to adapt to soil layers of different thicknesses. The vibration motor 519 drives the vibration plate 520 to vibrate, and the corrugated drill bit 522 vibrates indirectly along with the vibration plate 520. After receiving the vibration transmitted by the vibration motor 519, the corrugated drill bit 522 begins to disturb and crush the soil layer with its unique corrugated structure. The vibration weakens the binding force between soil particles, making them easier to be crushed and penetrated by the drill bit. In addition, a vibration motor 519 drives the corrugated drill bit 522 at multiple angles on the horizontal plane to break the soil and take samples.The sampling points of the same soil layer are increased, and during vibration, the gap between the first ring 511 and the circular ring 509 is used to prevent the vibration from affecting the power source for adjusting the height. The inner wall around the sampling hole is dug into a plane before sampling. The fixed channel 708 is embedded in the second positioning groove 709 and then fixed by bolts. The movable wall 706 is embedded in the first positioning groove 707 and then fixed by bolts. The fixed channel 708 and the movable wall 706 form a channel for the same-direction transmission tube 710. The corrugated drill bit 522 contacts the soil layer through the sampling mechanism 5 and the adjustment mechanism 6. At this time, the movable baffle frame 705 is in the spring 704. Under the restoring force, the second fixed block 703 contacts the well wall. When the corrugated drill bit 522 breaks the soil and takes samples through the vibration motor 519, the fixed baffle frame 701 and the movable baffle frame 705 shield the top and both sides of the corrugated drill bit 522, and the soil layer samples pass through the fixed channel 708, the transmission cylinder 710, and the bellows 711 in sequence into the storage mechanism 8. The enclosed fixed baffle frame 701 and the movable baffle frame 705 prevent the surrounding soil breaking work from affecting the soil layer particles on the samples, thereby improving the purity of the samples and the accuracy of the sampling results. The bellows 711 adopts a double inner sleeve with a corrugated section and an outer sleeve that are mutually sleeved and structured. It is beneficial to increase the compensation amount, reduce the thickness of the corrugated section and improve the axial rigidity, thereby achieving a vibration reduction effect, alleviating the impact of the vibration of the corrugated drill bit 522 on the storage mechanism 8. At the same time, the bellows 711 can reversely utilize the vibration of the corrugated drill bit 522 to accelerate the transmission of the sampled sample in the bellows 711. The vibration plays a role in preventing the bellows 711 from being blocked in the process. The bellows 711 can slide into the connecting frame 802 from top to bottom through the connecting plate 712, and then be installed and fixed after screwing in the screws. The sample enters the storage basket 804 through the bellows 711, and the storage basket can be taken out separately after the sampling is completed. 804, the baffle 806 can slide down inside the limit bar 808 and the fixed frame 801 to block the through hole of the storage basket 804 to prevent the sample from leaking out, and the storage basket 804 can be taken out for subsequent sample testing. The detachable storage basket 804 can directly take out the sample for testing. When the storage basket 804 is inserted into the fixed frame 801 from top to bottom, the first magnetic plate 803 and the second magnetic plate 807 are attracted to each other, and the baffle 806 is magnetically fixed above the through hole with the second magnetic plate 807. When the storage basket 804 is taken out, the storage basket 804 moves up, and the position of the baffle 806 remains unchanged, so that the baffle 806 moves downward relatively to block the through hole.

[0063] In summary, the sampling mechanism can realize the function of multi-angle sampling on the same horizontal plane to improve the accuracy of the sampling results.

[0064] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A petroleum distribution sampling device for oil mining, comprising a positioning mechanism (1), characterized in that: The positioning mechanism (1) is provided with a body (3), a control panel (4) is fixed on the top of the body (3), three sampling mechanisms (5) are provided in the body (3), the sampling mechanisms (5) comprising a first mounting plate (501) and a second mounting plate (504) fixed in the body (3), a motor (502) is fixed at a top side corner of the first mounting plate (501), a lead screw (503) is fixed at an output end of the motor (502), and the lead screw (503) rotates between the first mounting plate (501) and the second mounting plate (504). The guide screw (503) is threadedly connected with a double-hole sliding plate (506), and a sliding rod (505) is vertically passed through the double-hole sliding plate (506). The sliding rod (505) is fixed between the first mounting plate (501) and the second mounting plate (504). A connecting rod (507) is fixed at the bottom of the double-hole sliding plate (506), and a round block (508) is fixed at the bottom of the connecting rod (507). Four circular rings (509) are fixed at the bottom of the circular block (508), and a sleeve is provided on the circular ring (509). A first ring (511) is provided, and a first pull rod (510) is integrally formed on the first ring (511). A fixing plate (518) is fixed at a position below the round block (508) in the fuselage (3). A vibration motor (519) is fixed at the bottom of the fixing plate (518). A vibration plate (520) is fixed at the output end of the vibration motor (519). The vibration plate (520) is rotatably connected to a rotating wheel (521). A rotating arm (523) is fixed on the rotating wheel (521). The rotating arm (523) is remotely connected to the rotating wheel (521). A rotating shaft (514) is fixed to one end of the rotating wheel (521), and fixing rings (513) are fixed at both ends of the rotating shaft (514). A connecting curved rod (512) is integrally formed on the two fixing rings (513), and a connecting circular plate (524) is integrally formed between the two connecting curved rods (512). The connecting circular plate (524) is fixedly connected to the first pull rod (510). A rotating member (515) is sleeved on the rotating shaft (514), and a corrugated drill bit (522) is fixed on the rotating member (515).

2. The oil distribution sampling device for oil mining according to claim 1, characterized in that: Gaskets (516) and nuts (517) are sleeved on both ends of the rotating shaft (514); the rotating member (515) is arranged between the gasket (516) and the nut (517); and a collecting mechanism (7) is arranged on the rotating member (515).

3. The oil distribution sampling device for oil mining according to claim 2, characterized in that: The collecting mechanism (7) comprises a fixed baffle frame (701) fixed on the rotating member (515), the corrugated drill bit (522) being located in the fixed baffle frame (701), first fixed blocks (702) being fixed on three sides of the outer wall of the fixed baffle frame (701), a movable baffle frame (705) being sleeved on one end of the fixed baffle frame (701) away from the rotating member (515), second fixed blocks (703) being fixed on three sides of the outer wall of the movable baffle frame (705), a spring (704) being fixed between the second fixed block (703) and the first fixed block (702), a second positioning groove (709) being integrally formed on the lower inner wall of the fixed baffle frame (701), and a second positioning groove (709) being integrally formed on the lower inner wall of the fixed baffle frame (701). A fixed channel (708) is slidably connected in the second positioning grooves (709); a first positioning groove (707) is integrally formed on the lower inner wall of the movable stop frame (705); a movable wall (706) is slidably connected in the first positioning groove (707); the movable wall (706) contacts the inner wall of the fixed channel (708); a transmission cylinder (710) is fixed at the bottom of the fixed channel (708); a bellows (711) is fixed at one end of the transmission cylinder (710) away from the fixed channel (708); a connecting plate (712) is fixed at one end of the bellows (711) away from the transmission cylinder (710); and a storage mechanism (8) is provided on the connecting plate (712).

4. The oil distribution sampling device for oil mining according to claim 3 is characterized in that: An adjustment mechanism (6) is provided between the sampling mechanism (5) and the collecting mechanism (7), and the adjustment mechanism (6) comprises a second electric telescopic rod (601) fixed at a central position on the top of the fixing plate (518), a cross steel ring (602) is fixed on the top of the second electric telescopic rod (601), a second pull rod (604) is movably connected to the cross steel ring (602), and second sleeves (603) are integrally formed at both ends of the second pull rod (604), and the second pull rod (604) is sleeved on the cross steel ring through the second sleeve (603) located above. The ring (602) is movably connected to the cross steel ring (602), and a second ring (603) located below is provided with a hanging ear (606), the number of the hanging ears (606) is two, a sleeve (605) is integrally formed between the two hanging ears (606), the sleeve (605) is sleeved on the first pull rod (510), and the other hanging ear (606) is provided with a third ring (607), and the third ring (607) is integrally formed with a third pull rod (608), and the third pull rod (608) is rotatably connected to the second fixed block (703).

5. The oil distribution sampling device for oil mining according to claim 3, characterized in that: The collecting mechanism (7) is provided with a storage mechanism (8), the storage mechanism (8) comprising a fixed frame (801) which is estimated to be located below the vibration plate (520) in the fuselage (3), a connecting frame (802) being fixed at the front end of the fixed frame (801), the inner wall of the connecting frame (802) being adapted to the connecting plate (712), a storage basket (804) being placed in the fixed frame (801), a limiting strip (808) being fixed in the storage basket (804), a baffle (806) slidingly disposed between the limiting strip (808) and the storage basket (804), and a through hole communicating with the corrugated pipe (711) being provided in the storage basket (804), the connecting frame (802) and the fixed frame (801).

6. The oil distribution sampling device for oil mining according to claim 5, characterized in that: A second magnetic plate (807) is fixed to the lower side of the baffle (806) that contacts the storage basket (804); a first magnetic plate (803) is fixed to the inner wall of the fixed frame (801) at a position above the through hole; the first magnetic plate (803) is slidably connected to the second magnetic plate (807); and a handle (805) is fixed to the top of the storage basket (804) near the connecting frame (802).

7. The oil distribution sampling device for oil mining according to claim 1, characterized in that: The positioning mechanism (1) is provided with an adjusting and fixing mechanism (2) on both the front and rear sides. The adjusting and fixing mechanism (2) comprises a rotating rod (201). The bottom end of the rotating rod (201) is rotatably connected to a grounding plate (202). A ground cone (203) is passed through the top of the grounding plate (202).

8. The oil distribution sampling device for oil mining according to claim 7, characterized in that: The positioning mechanism (1) comprises two left-right symmetrical slide rails (101), a threaded rod (102) being rotatably connected inside the slide rail (101), a rotating knob (103) being fixed at one end of the threaded rod (102), a slider (104) being threadably connected to the threaded rod (102), a first electric telescopic rod (106) being rotatably connected to the top of the slider (104), a fixed seat (107) being rotatably connected to the upper end of the first electric telescopic rod (106), a body (3) being vertically inserted into the fixed seat (107) at an upper position, the body (3) being fixedly connected to the fixed seat (107), and a rotating rod (201) being rotatably connected to the slide rail (101).

9. The oil distribution sampling device for oil mining according to claim 8, characterized in that: The threaded rod (102) is rotatably connected to the slide rail (101) via a bearing (105).

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