Core sampling equipment for oil exploitation

Abstract

The invention relates to the field of petroleum engineering, and discloses oil exploitation rock core sampling equipment which comprises a support, an adjusting mechanism, a drilling sampling mechanism, a rock core pushing mechanism and a rock core cleaning and storing mechanism, supporting legs are fixedly connected to the lower portion of the support, and the adjusting mechanism is fixedly connected to the upper portion of the support; the drilling sampling mechanism is fixedly connected to the interior of the support and penetrates through the first fixing platform, the rock core pushing mechanism is fixedly connected to the first fixing platform, and the rock core cleaning and storing mechanism is fixedly connected to the first fixing platform. According to the rock core sampling equipment for oil exploitation, through mutual cooperation of the rock core pushing mechanism and the rock core cleaning and storing mechanism, rock core columns of different models and sizes can be automatically cleaned, dehumidified and stored, the rock core columns can be cleaned in real time, pollution to the rock core columns is reduced, and the rock core sampling efficiency is improved. And the rock core columns are automatically cleaned and stored, so that the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of petroleum engineering, in particular to a core sampling device for oil production. Background Art

[0002] Core sampling refers to the use of specific drilling equipment and technology to take cylindrical rock samples from underground rock formations during geological exploration and oil drilling. These samples are called cores, and they are important physical materials for studying underground geological structures, rock types, mineral compositions, fossil contents, and oil and gas reservoir characteristics. Core sampling can provide direct evidence of stratigraphic continuity and rock physical properties, which is crucial for evaluating the development potential of mineral resources and oil and gas fields.

[0003] Existing core sampling equipment mostly removes core columns manually, which poses a risk of core column damage due to human factors, and there are problems with immediate cleaning and storage of core columns when they are removed, increasing the risk of core column contamination, affecting the accuracy of judgment on oil deposits, and further affecting the assessment of oil and gas reservoirs. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a core sampling device for oil production, which has the advantages of automation and instant cleaning and storage of core columns, and solves the problems in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a petroleum production core sampling device, comprising a bracket, an adjustment mechanism, a drilling sampling mechanism, a core pushing mechanism, and a core cleaning and storage mechanism, wherein a support leg is fixedly connected below the bracket, the adjustment mechanism is fixedly connected above the bracket, the drilling sampling mechanism is fixedly connected inside the bracket and passes through a first fixed platform, the core pushing mechanism is fixedly connected to the first fixed platform, and the core cleaning and storage mechanism is fixedly connected to the first fixed platform;

[0008] The core cleaning and storage mechanism comprises a shell, a cleaning box door and a storage box door are fixedly connected to the side of the shell, a cleaning door handle and a storage door handle are fixedly connected to the cleaning box door and the storage box door, a docking port and a fourth motor are fixedly connected to the front of the shell, a magnetic ring is fixedly connected to the inside of the docking port, a first sensor is fixedly connected to the docking port, a first screw is fixedly connected to the inner wall of the shell, a first slider is fixedly connected to the first screw, a third fixed block is fixedly connected to one side of the first screw, a telescopic cleaning ring is fixedly connected to the third fixed rod between the third fixed block and the fourth fixed block, a third screw is fixedly connected to one side of the fourth fixed block, the third screw is fixedly connected to the first isolation plate, a fourth screw is fixedly connected to one side of the first isolation plate, a second solenoid valve is fixedly connected to the first isolation plate, a third solenoid valve is fixedly connected to the second isolation plate, a fifth motor is fixedly connected to one side of the second isolation plate, a storage tank is fixedly connected to one side of the second isolation plate, a storage tank bracket is fixedly connected below the storage tank, and a second sensor and a heating element are fixedly connected to the inner wall of the shell;

[0009] The telescopic clamp is fixedly connected to the first screw rod, and the telescopic clamp includes a first slider, a third fixing rod is fixedly connected to the first slider, a second motor is fixedly connected to one side of the third fixing rod, a second screw rod is fixedly connected below the third fixing rod, a second slider is fixedly connected to the second screw rod, and a buckle is fixedly connected to the second slider;

[0010] The telescopic cleaning ring includes a telescopic snap ring, an inner ring is fixedly connected inside the snap ring, the inner ring is rollingly connected to the second slider, the inner ring can rotate inside the second slider, a high-elastic fixing rod is fixedly connected inside the inner ring, a gear brush is fixedly connected below the high-elastic fixing rod, a telescopic ring is fixedly connected inside the gear brush, a third motor is fixedly connected to the telescopic cleaning ring, a rotating shaft is fixedly connected to the third motor, and a gear is fixedly connected to one side of the rotating shaft.

[0011] Preferably, the core pushing mechanism includes a second hydraulic pump, a first push rod is fixedly connected to one side of the second hydraulic pump, a first slide rail is fixedly connected to one side of the first push rod, the first slide rail is fixedly connected to the first slide groove, the first slide rail is used to store the core tube, a third hydraulic pump is fixedly connected to the inside of the core tube, a second push rod is fixedly connected to one side of the third hydraulic pump, the second push rod is fixedly connected to a core column, a U-shaped fixing ring is fixedly connected below the core column, and a drilling pipe rack is fixedly connected above the second hydraulic pump.

[0012] Preferably, the bracket includes a first fixed platform, a first fixed rod is fixedly connected above the first fixed platform, a second fixed platform is fixedly connected above the first fixed rod, and the second fixed platform is fixedly connected to a third fixed platform via a fixing rope.

[0013] Preferably, the drilling sampling mechanism includes a first motor, and the first motor and a drilling fluid tank are fixedly connected above the third fixed platform. A drilling fluid pipe is fixedly connected to one side of the drilling fluid tank, a first solenoid valve is fixedly connected to the drilling fluid pipe, one end of the drilling fluid pipe is fixedly connected to a drilling pipe sleeve, a drilling pipe is fixedly connected below the drilling pipe sleeve, and a drill bit is fixedly connected below the drilling pipe.

[0014] Preferably, the supporting leg comprises a supporting column, the supporting column is fixedly connected below the first fixed platform, a supporting platform is fixedly connected below the supporting column, and a supporting block is fixedly connected to the supporting platform.

[0015] Preferably, the adjusting mechanism includes a first fixed block, the first fixed block is fixedly connected to the first fixed platform, one side of the first fixed block is fixedly connected to the first hydraulic pump, one side of the first fixed block is fixedly connected to the first telescopic rod sleeve, one side of the first telescopic rod sleeve is fixedly connected to the first telescopic rod, one side of the first telescopic rod is fixedly connected to the second fixed block, one side of the second fixed block is fixedly connected to the second fixed rod, the second fixed rod passes through the ring and can move inside the ring, and one side of the second fixed rod is fixedly connected to a pull block.

[0016] Preferably, the air pump is fixedly connected to the first fixed platform, and the motor and the hydraulic pump are controlled to work by a control system.

[0017] Preferably, the core pushing mechanism and the core cleaning storage mechanism are connected to each other, specifically:

[0018] The control system controls the second hydraulic pumps on the left and right sides to work, driving the first push rod to push the first slide rail and the second slide rail toward the center to slide on the first slide groove and the second slide groove. There is a height difference between the first slide groove and the second slide groove, which is convenient for the docking interface of the core cleaning storage mechanism to dock the core tube. When the first slide rail and the second slide rail stop moving, the magnetic suction ring inside the docking interface magnetically absorbs the core tube to complete the sealed docking.

[0019] Clean and store the core column, specifically:

[0020] After the sealing connection, the control system controls the third hydraulic pump to drive the second push rod to push the first push block toward the inside of the docking interface, and the first push block pushes the core column to move out of the core tube. The first sensor on the docking interface detects the radius of the core column and transmits it to the control system. The control system controls the second motor to drive the second slider on the second screw to move and clamp the buckle to adjust the radius of the telescopic clamping ring and the telescopic cleaning ring so that the telescopic clamping ring fixes the core column. After the core column is pushed and fixed on the telescopic clamping ring by the core pushing mechanism, the fourth motor drives the telescopic clamping ring on the first screw to move in the direction of the telescopic cleaning ring. The control system controls the third motor to drive the rotating shaft to rotate, and the rotating shaft drives the gear to rotate. The gear is meshed with the gear brush. The rotation of the gear brush drives the inner ring to rotate in the second slider. The rotation of the gear brush cooperates with the moving telescopic clamping ring to clean the surface of the core column. At the same time, the control system controls the The telescopic clamp approaches to fix and clamp the cleaned core column and moves toward the first isolation plate, moves and passes through the first isolation plate and cooperates with the telescopic clamp controlled by the fifth motor to fix and clamp the core column on the telescopic clamp on the fourth screw, and the telescopic clamp fixes the core column and moves toward the second isolation plate. When the telescopic clamp moves to be perpendicular to the second sensor, the control system controls the fifth motor to stop working, controls the second solenoid valve to close, and starts the heating element to evaporate the residual drilling fluid on the core column, and the evaporated water vapor is discharged from the core cleaning storage mechanism through the exhaust port. After the core column is dehumidified, the control system controls the third solenoid valve to open, controls the telescopic clamp to transport the core column into the storage tank, and controls the second motor to slowly move the second slider to adjust the clamp to enlarge, so as to completely place the core column into the storage tank, and controls the third solenoid valve to close, thereby completing the storage of the core column.

[0021] (III) Beneficial effects

[0022] The present invention provides a core sampling device for oil production. The core pushing mechanism and the core cleaning and storage mechanism cooperate with each other to automatically clean, dehumidify and store core columns of different models and sizes. The core columns can be cleaned immediately to reduce the contamination of the core columns. In addition, the core columns are automatically cleaned and stored to reduce the risk of core column damage caused by manual cleaning and the contamination caused by improper manual operation, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the bracket and the supporting legs of the present invention;

[0025] Figure 3 This is a schematic diagram of the drilling and adjusting mechanism structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the exhaust port structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the overall structure of the core cleaning and storage mechanism of the present invention;

[0028] Figure 6 This is a schematic diagram of the appearance structure of the core cleaning and storage mechanism of the present invention;

[0029] Figure 7 It is a partial structural schematic diagram of the core cleaning storage mechanism of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the core pushing mechanism of the present invention;

[0031] Fig. 9 It is a schematic diagram of the cross-sectional structure of the core pushing mechanism of the present invention;

[0032] Fig.10 It is a schematic diagram of the telescopic clamping ring mechanism of the present invention;

[0033] Fig.11 This is an enlarged front structural schematic diagram of the telescopic cleaning ring of the present invention;

[0034] Fig.12 This is an enlarged schematic diagram of the back structure of the telescopic cleaning ring of the present invention;

[0035] Fig.13 This is a schematic diagram of the reduced structure of the telescopic cleaning ring of the present invention.

[0036] In the figure:

[0037] 1. Bracket; 101. First fixed platform; 102. First fixed rod; 103. Second fixed platform; 104. Fixed rope; 105. Third fixed platform;

[0038] 2. Support legs; 201. Support columns; 202. Support platforms; 203. Support blocks;

[0039] 3. Adjustment mechanism; 301. First fixed block; 302. First hydraulic pump; 303. First telescopic rod sleeve; 304. First telescopic rod; 305. Second fixed block; 306. Second fixed rod; 307. Ring; 308. Pull block;

[0040] 4. Drilling sampling mechanism; 401. First motor; 402. Drilling fluid tank; 403. Drilling fluid pipe; 404. Drilling pipe sleeve; 405. Drilling pipe; 406. Drill bit; 407. First solenoid valve

[0041] 5. Air pump;

[0042] 6. Core pushing mechanism; 601. Second hydraulic pump; 602. Slideway; 603. First slide rail; 604. First push block; 605. Third hydraulic pump; 606. U-shaped fixing ring; 607. Core column; 608. Drilling pipe rack; 609. First push rod; 610. Second push rod; 611. Core tube;

[0043] 7. Core cleaning and storage mechanism; 701. Cleaning door handle; 702. Storage door handle; 703. Exhaust port; 704. Docking port; 705. Magnetic ring; 706. First sensor; 707. First screw rod; 708. First slider; 709. Third fixing rod; 710. Second motor; 711. Second screw rod; 712. Second slider; 713. Buckle; 714. Inner ring; 715. Gear brush; 716. Telescopic ring; 717. High elastic fixing rod; 718. Third motor; 719. Rotating shaft; 720. Gear; 721. Third fixing block; 722. The fourth fixed block; 723, telescopic cleaning ring; 724, telescopic clamping ring; 725, second sensor; 726, second solenoid valve; 727, third solenoid valve; 728, device handle; 729, storage tank; 730, storage tank bracket; 731, third screw; 732, fourth motor; 733, second slide groove; 734, second slide rail; 735, cleaning box door; 736, storage box door; 737, heating element; 738, shell; 739, first isolation plate; 740, second isolation plate; 741, fourth screw; 742, fifth motor; 743, third fixed rod. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Example 1, a preferred embodiment of a petroleum extraction core sampling device provided by the present invention is as follows Figures 1 to 13 As shown: a core sampling device for oil production, including a bracket 1, an adjustment mechanism 3, a drilling sampling mechanism 4, a core pushing mechanism 6, and a core cleaning and storage mechanism 7.

[0046] like Figure 3-7As shown, the core cleaning and storage mechanism 7 includes a shell 738, a cleaning box door 735 and a storage box door 736 are fixedly connected to the side of the shell 738, a cleaning door handle 701 and a storage door handle 702 are fixedly connected to the cleaning box door 735 and the storage box door 736, a docking port 704 and a fourth motor 732 are fixedly connected to the front of the shell 738, a magnetic ring 705 is fixedly connected inside the docking port 704 for magnetic sealing and fixing with the core pushing mechanism 6, a first sensor 706 is fixedly connected to the docking port 704 for detecting the radius of the core column 607, a first screw rod 707 is fixedly connected to the inner wall of the shell 738, a first slider 708 is fixedly connected to the first screw rod 707, a third fixed block 721 is fixedly connected to one side of the first screw rod 707, a telescopic cleaning ring 723 is fixedly connected to the third fixed rod 743 between the third fixed block 721 and the fourth fixed block 722, and a first fixed rod 744 is fixedly connected to one side of the fourth fixed block 722. Three screws 731, the third screw is fixedly connected to the first isolation plate 739, and the fourth screw 741 is fixedly connected to one side of the first isolation plate 739. The first screw 707, the third screw 731 and the fourth screw 741 are all fixedly connected with telescopic clamps 724. There are three telescopic clamps 724, which can move freely on the first screw 707, the third screw 731 and the fourth screw 741. The second solenoid valve 726 is fixedly connected to the first isolation plate 739, the third solenoid valve 727 is fixedly connected to the second isolation plate 740, the fifth motor 742 is fixedly connected to one side of the second isolation plate 740, the second isolation plate 740 is fixedly connected with a storage tank 729, and the storage tank bracket 730 is fixedly connected below the storage tank 729. The second sensor 725 and the heating element 737 are fixedly connected to the inner wall of the shell 738. The second sensor 725 detects the position of the core column 607, and the heating element 737 heats and dehumidifies the core column 607;

[0047] like Fig.10 As shown, the telescopic snap ring 724 is fixedly connected to the first screw rod 707. There are three telescopic snap rings 724 and they are all made of stainless steel. The telescopic snap ring 724 includes a first slider 708, the first slider 708 is fixedly connected to a third fixing rod 709, one side of the third fixing rod 709 is fixedly connected to a second motor 710, a second screw rod 711 is fixedly connected below the third fixing rod 709, a second slider 712 is fixedly connected to the second screw rod 711, and a buckle 713 is fixedly connected to the second slider 712;

[0048] like Figure 11-13As shown, the telescopic cleaning ring 723 includes a telescopic snap ring 724, an inner ring 714 is fixedly connected inside the snap buckle 713, the inner ring 714 is rollingly connected to the second slider 712, the inner ring 714 can rotate inside the second slider 712, a high-elastic fixed rod 717 is fixedly connected inside the inner ring 714, a gear brush 715 is fixedly connected below the high-elastic fixed rod 717, a telescopic ring 716 is fixedly connected inside the gear brush 715, a third motor 718 is fixedly connected to the telescopic cleaning ring 723, a rotating shaft 719 is fixedly connected to the third motor 718, a gear 720 is fixedly connected to one side of the rotating shaft 719, the third motor 718 drives the rotating shaft 719 to rotate and drives the gear 720 to rotate, the gear 720 is meshed with the gear brush 715, and the telescopic cleaning ring 723 is fixedly connected to the third fixed rod 743;

[0049] like Figure 6-8 As shown, the core pushing mechanism 6 includes a second hydraulic pump 601, a first push rod 609 is fixedly connected to one side of the second hydraulic pump 601, a first slide rail 603 is fixedly connected to one side of the first push rod 609, the first slide rail 603 is fixedly connected to the first slide groove 602, the first slide rail 603 is used to store the core tube 611, the core tube 611 is fixedly connected to the third hydraulic pump 605, a second push rod 610 is fixedly connected to one side of the third hydraulic pump 605, the second push rod 610 is fixedly connected to the core column 607, a U-shaped fixing ring is fixedly connected below the core column 607, a drilling pipe rack 608 is fixedly connected above the second hydraulic pump 601 for fixing the drilling pipe sleeve 404, the second hydraulic pump 601 is two symmetrical left and right, there is a height difference between the second slide groove 733 and the first slide groove 602, so as to facilitate the core cleaning storage mechanism 7 to dock with the core pushing mechanism 6;

[0050] like Figure 2 As shown, the bracket 1 includes a first fixed platform 101, a first fixed rod 102 is fixedly connected above the first fixed platform 101, a second fixed platform 103 is fixedly connected above the first fixed rod 102, the second fixed platform 103 is fixedly connected to a third fixed platform 105 via a fixed rope 104, and the third fixed platform 105 is used to fix the drilling sampling mechanism 4;

[0051] like Figure 3 As shown, the drilling sampling mechanism 4 includes a first motor 401, the first motor 401 is fixedly connected above the third fixed platform 105, a drilling fluid tank 402 is fixedly connected above the third fixed platform 105, a drilling fluid pipe 403 is fixedly connected to one side of the drilling fluid tank 402, a first solenoid valve 407 is fixedly connected to the drilling fluid pipe 403, one end of the drilling fluid pipe 403 is fixedly connected to a drilling pipe sleeve 404, a drilling pipe 405 is fixedly connected below the drilling pipe sleeve 404, and a drill bit 406 is fixedly connected below the drilling pipe 405;

[0052] like Figure 2 As shown, the support leg 2 includes a support column 201, the support column 201 is fixedly connected below the first fixed platform 101, a support platform 202 is fixedly connected below the support column 201, and a support block 203 is fixedly connected to the support platform 202;

[0053] like Figure 3 As shown, the adjustment mechanism 3 includes a first fixed block 301, the first fixed block 301 is fixedly connected to the first fixed platform 101, one side of the first fixed block 301 is fixedly connected to the first hydraulic pump 302, the other side of the first fixed block 301 is fixedly connected to the first telescopic rod sleeve 303, one side of the first telescopic rod sleeve 303 is fixedly connected to the first telescopic rod 304, one side of the first telescopic rod 304 is fixedly connected to the second fixed block 305, one side of the second fixed block 305 is fixedly connected to the second fixed rod 306, the second fixed rod 306 passes through the collar 307 and can move inside the collar 307, one side of the second fixed rod 306 is fixedly connected to the pull block 308, and the collar 307 is fixedly connected to the drilling pipe sleeve 404;

[0054] like Figure 3 As shown, the air pump 5 is fixedly connected to the first fixed platform 101, and the motor and the hydraulic pump are controlled by the control system.

[0055] Example 2, based on Example 1, a preferred embodiment of a petroleum extraction core sampling device provided by the present invention is as follows Figures 1 to 13 As shown: an oil production core sampling device, the core cleaning storage mechanism 7 is fixedly installed on the first fixed platform 101, the control system controls the second hydraulic pump 601 to work to push the first push rod 609 to push the first slide rail 603 and the second slide rail 734 to approach and complete the docking, and controls the third hydraulic pump to work to drive the second push rod 610 to push the core column 607 out, enter the core cleaning storage mechanism 7, and automatically clean, dehumidify and safely store the core column 607 in real time, reducing the risk of core contamination, improving work efficiency and reducing core damage caused by human factors.

[0056] When the core sampling device is in use, the support column 201 of the support leg 2 below the first fixed platform 101 increases the contact force area through the support platform 202 and the support block 203 to fix the core sampling device;

[0057] The control system controls the first motor 401 to work, controls the first solenoid valve to open, and the drilling fluid in the drilling fluid tank 402 flows from the drilling fluid pipe 403 into the inside of the drilling pipe sleeve. The first motor 401 works to drive the drilling pipe 405 to rotate, and the drill bit 406 under the drilling pipe 405 works to drill underground. The drilling fluid cooperates with the drill bit 406 to drill.

[0058] When drilling to the designated position, the control system controls the drill bit to stop working, and controls the drilling pipe 405 to retract the drilling pipe sleeve 404. The control system controls the first hydraulic pump 302 of the adjustment mechanism 3 to work to retract the first telescopic rod 304 toward the inside of the first telescopic rod sleeve 303. The movement of the first telescopic rod 304 drives the second fixed block 305 to move backward, and the second fixed rod 306 passes through the collar 307. The second fixed block 305 drives the second fixed rod 306 to move in the retraction direction until the pull block 308 abuts against the collar 307, and the collar 307 is forced to change the direction of the drilling pipe sleeve 404.

[0059] Fix the drilling pipe sleeve 404 on the drilling pipe rack 608, so that the core tube 611 enters the core pushing mechanism 6;

[0060] The core pushing mechanism 6 and the core cleaning storage mechanism 7 are connected, specifically:

[0061] The control system controls the second hydraulic pumps 601 on the left and right sides to work, driving the first push rod 609 to push the first slide rail 603 and the second slide rail 734 toward the center to slide on the first slide groove 602 and the second slide groove 733. There is a height difference between the first slide groove 602 and the second slide groove 733, which facilitates the docking interface 704 of the core cleaning storage mechanism 7 to dock the core tube 611. When the first slide rail 603 and the second slide rail 734 stop moving, the magnetic attraction ring 705 inside the docking interface 704 magnetically attracts the core tube 611 to complete the sealed docking.

[0062] Clean and store the core column, specifically:

[0063] After the sealing docking is completed, the control system controls the third hydraulic pump 605 to drive the second push rod 610 to push the first push block 604 into the core cleaning storage mechanism 7, and the first push block 604 pushes the core column 607 to move out of the core tube 611. The first sensor 706 on the docking interface 704 detects the radius of the core column 607 and transmits the detection result to the control system. The control system controls the second motor 710 to drive the second screw 711 to rotate, and the second slider 712 on the second screw 711 moves and clamps the buckle 713 to adjust the radius of the telescopic clamp ring 724 and the telescopic cleaning ring 723, so that the telescopic clamp ring 724 can The core column 607 is fixed. After the core column 607 is pushed and fixed on the telescopic clamping ring 724 by the core pushing mechanism 6, the fourth motor 732 drives the first screw 707 to rotate, and the telescopic clamping ring 724 moves toward the telescopic cleaning ring 723. The control system controls the third motor 718 to work, drives the rotating shaft 719 to rotate, and the rotating shaft 719 drives the gear 720 to rotate. The gear 720 is meshed with the gear brush 715. The gear brush 715 is fixedly connected to the inner ring 714 through the high-elastic fixing rod 717. The rotation of the gear brush 715 drives the inner ring 714 to rotate in the second slider 712. The gear brush 715 rotates and moves the telescopic clamping ring 724 closer to the moving part. While cleaning the surface of the core column 607, the control system controls the telescopic clamping ring 724 on the third screw 731 to approach and fix and clamp the cleaned core column 607 and move it toward the first isolation plate 739, move and pass through the first isolation plate 739 and cooperate with the telescopic clamping ring 724 controlled by the fifth motor 742 to fix and clamp the core column 607 on the telescopic clamping ring 724 on the fourth screw 741, and the telescopic clamping ring 724 fixes the core column 607 and moves toward the second isolation plate 740. When the telescopic clamping ring 724 moves to be perpendicular to the second sensor 725, the control system controls the fifth motor 742 to stop working. , the telescopic clamping ring 724 is stationary, the control system controls the second solenoid valve 726 to close, and starts the heating element 737 to evaporate the residual drilling fluid on the core column 607, and the evaporated water vapor is discharged from the core cleaning storage mechanism 7 through the exhaust port 703. After the core column 607 is dehumidified, the control system controls the third solenoid valve 727 to open, controls the telescopic clamping ring 724 to transport the core column 607 into the storage tank 729, and controls the second motor 710 to slowly move the second slider 712 to adjust the clamping ring to enlarge, so that the core column 607 is completely placed in the storage tank 729, and controls the third solenoid valve to close, completing the storage process of the core column 607.

[0064] The present invention provides a core sampling device for oil production. Through the cooperation of a core pushing mechanism 6 and a core cleaning and storage mechanism 7, core columns of different models and sizes can be automatically cleaned, dehumidified and stored. The core columns can be cleaned immediately to reduce the contamination of the core columns. In addition, the core columns can be automatically cleaned and stored to reduce the risk of damage to the core columns caused by manual cleaning and the contamination caused by improper manual operation, thereby improving work efficiency.

[0065] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A core sampling device for oil production, comprising a support (1), an adjustment mechanism (3), a drilling sampling mechanism (4), a core pushing mechanism (6) and a core cleaning and storage mechanism (7), characterized in that: A support leg (2) is fixedly connected to the bottom of the support (1), the adjustment mechanism (3) is fixedly connected to the top of the support (1), the drilling sampling mechanism (4) is fixedly connected to the inside of the support (1) and passes through the first fixed platform (101), the core pushing mechanism (6) is fixedly connected to the first fixed platform (101), and the core cleaning storage mechanism (7) is fixedly connected to the first fixed platform (101); The core cleaning and storage mechanism (7) comprises a shell (738), a cleaning box door (735) and a storage box door (736) are fixedly connected to the side of the shell (738), a cleaning door handle (701) and a storage door handle (702) are fixedly connected to the cleaning box door (735) and the storage box door (736), a docking port (704) and a fourth motor (732) are fixedly connected to the front of the shell (738), a magnetic ring (705) is fixedly connected inside the docking port (704), a first sensor (706) is fixedly connected to the docking port (704), a first screw rod (707) is fixedly connected to the inner wall of the shell (738), a first slider (708) is fixedly connected to the first screw rod (707), a third fixed block (721) is fixedly connected to one side of the first screw rod (707), and a third fixed block (721) is provided between the third fixed block (721) and the fourth fixed block (722). A telescopic cleaning ring (723) is fixedly connected to the rod (743); a third screw (731) is fixedly connected to one side of the fourth fixed block (722); the third screw is fixedly connected to the first isolation plate (739); a fourth screw (741) is fixedly connected to one side of the first isolation plate (739); a second solenoid valve (726) is fixedly connected to the first isolation plate (739); a third solenoid valve (727) is fixedly connected to the second isolation plate (740); a fifth motor (742) is fixedly connected to one side of the second isolation plate (740); a storage tank (729) is fixedly connected to one side of the second isolation plate (740); a storage tank bracket (730) is fixedly connected below the storage tank (729); a second sensor (725) and a heating element (737) are fixedly connected to the inner wall of the shell (738); and a telescopic clamp (724) is fixedly connected below the first screw (707); The telescopic snap ring (724) comprises a first slider (708), a third fixing rod (709) is fixedly connected to the first slider (708), a second motor (710) is fixedly connected to one side of the third fixing rod (709), a second screw rod (711) is fixedly connected below the third fixing rod (709), a second slider (712) is fixedly connected to the second screw rod (711), and a buckle (713) is fixedly connected to the second slider (712); The telescopic cleaning ring (723) comprises a telescopic snap ring (724), an inner ring (714) is fixedly connected inside the snap buckle (713), the inner ring (714) is rollingly connected to the second slider (712), and the inner ring (714) can rotate inside the second slider (712), a high-elasticity fixing rod (717) is fixedly connected inside the inner ring (714), a gear brush (715) is fixedly connected below the high-elasticity fixing rod (717), a telescopic ring (716) is fixedly connected inside the gear brush (715), a third motor (718) is fixedly connected to the telescopic cleaning ring (723), a rotating shaft (719) is fixedly connected to the third motor (718), and a gear (720) is fixedly connected to one side of the rotating shaft (719).

2. The oil production core sampling device according to claim 1, characterized in that: The core pushing mechanism (6) comprises a second hydraulic pump (601), one side of the second hydraulic pump (601) is fixedly connected to a first push rod (609), one side of the first push rod (609) is fixedly connected to a first slide rail (603), the first slide rail (603) is fixedly connected to a first slide groove (602), the first slide rail (603) is used to store a core tube (611), the core tube (611) is fixedly connected to a third hydraulic pump (605) inside, one side of the third hydraulic pump (605) is fixedly connected to a second push rod (610), the second push rod (610) is fixedly connected to a core column (607), a U-shaped fixing ring is fixedly connected below the core column (607), and a drilling pipe rack (608) is fixedly connected above the second hydraulic pump (601).

3. The oil production core sampling device according to claim 2, characterized in that: The support (1) comprises a first fixed platform (101), a first fixed rod (102) is fixedly connected above the first fixed platform (101), a second fixed platform (103) is fixedly connected above the first fixed rod (102), and the second fixed platform (103) is fixedly connected to a third fixed platform (105) via a fixing rope (104).

4. The oil production core sampling device according to claim 3 is characterized in that: The drilling sampling mechanism (4) comprises a first motor (401), the first motor (401) and a drilling fluid tank (402) are fixedly connected above a third fixed platform (105), a drilling fluid pipe (403) is fixedly connected to one side of the drilling fluid tank (402), a first solenoid valve (407) is fixedly connected to the drilling fluid pipe (403), one end of the drilling fluid pipe (403) is fixedly connected to a drilling pipe sleeve (404), a drilling pipe (405) is fixedly connected below the drilling pipe sleeve (404), and a drill bit (406) is fixedly connected below the drilling pipe (405).

5. The oil production core sampling device according to claim 4, characterized in that: The support leg (2) comprises a support column (201), wherein the support column (201) is fixedly connected below the first fixed platform (101), a support platform (202) is fixedly connected below the support column (201), and a support block (203) is fixedly connected to the support platform (202).

6. The oil production core sampling device according to claim 5, characterized in that: The adjustment mechanism (3) comprises a first fixed block (301), the first fixed block (301) is fixedly connected to the first fixed platform (101), a first hydraulic pump (302) is fixedly connected to one side of the first fixed block (301), a first telescopic rod sleeve (303) is fixedly connected to one side of the first fixed block (301), a first telescopic rod (304) is fixedly connected to one side of the first telescopic rod sleeve (303), a second fixed block (305) is fixedly connected to one side of the first telescopic rod (304), a second fixed block (305) is fixedly connected to one side of the second fixed rod (306), the second fixed rod (306) passes through the collar (307) and can move inside the collar (307), and a pulling block (308) is fixedly connected to one side of the second fixed rod (306).

7. The oil production core sampling device according to claim 6, characterized in that: The air pump (5) is fixedly connected to the first fixed platform (101), and the motor and the hydraulic pump are controlled to work through a control system.

8. The oil production core sampling device according to claim 7, characterized in that: The core pushing mechanism (6) and the core cleaning storage mechanism (7) are connected to each other. Specifically: The control system controls the second hydraulic pumps (601) on the left and right sides to work, driving the first push rod (609) to push the first slide rail (603) and the second slide rail (734) toward the center to slide on the first slide groove (602) and the second slide groove (733). There is a height difference between the first slide groove (602) and the second slide groove (733), which facilitates the docking interface (704) of the core cleaning storage mechanism (7) to dock with the core tube (611). When the first slide rail (603) and the second slide rail (734) stop moving, the magnetic attraction ring (705) inside the docking interface (704) magnetically attracts the core tube (611) to complete the sealed docking. Clean and store the core column, specifically: After the sealed docking, the control system controls the third hydraulic pump (605) to drive the second push rod (610) to push the first push block (604) into the docking port (704), and the first push block (604) pushes the core column (607) to move out of the core tube (611). The first sensor (706) on the docking port (704) detects the radius of the core column (607) and transmits it to the control system. The control system controls the second motor (710) to drive the second slider (712) on the second screw rod (711) to move and clamp the buckle (713) to adjust the radius of the telescopic clamp ring (724) and the telescopic cleaning ring (723), so that the telescopic clamp ring (724) fixes the core column (607). After the core column (607) is pushed and fixed on the telescopic clamping ring (724) by the core pushing mechanism (6), the fourth motor (732) drives the telescopic clamping ring (724) on the first screw (707) to move toward the telescopic cleaning ring (723), and the control system controls the third motor (718) to drive the rotating shaft (719) to rotate, and the rotating shaft (719) drives the gear (720) to rotate, and the gear (720) is meshed with the gear brush (715). The gear brush (715) rotates to drive the inner ring (714) to rotate in the second slider (712), and the gear brush (715) rotates to cooperate with the moving telescopic clamping ring (724) to clean the surface of the core column (607). At the same time, the control system controls the telescopic clamp (724) on the third screw (731) to approach and fix the cleaned core column (607) and move it toward the first isolation plate (739), move and pass through the first isolation plate (739) and cooperate with the telescopic clamp (724) controlled by the fifth motor (742) to fix the core column (607) on the telescopic clamp (724) on the fourth screw (741), and the telescopic clamp (724) fixes the core column (607) and moves toward the second isolation plate (740). When the telescopic clamp (724) moves to be perpendicular to the second sensor (725), the control system controls the fifth motor (742) to stop working. The control system controls the second solenoid valve (726) to close and starts the heating element (737) to evaporate the drilling fluid remaining on the core column (607). The evaporated water vapor is discharged from the core cleaning storage mechanism (7) through the exhaust port (703). After the core column (607) is dehumidified, the control system controls the third solenoid valve (727) to open, controls the telescopic clamping ring (724) to transport the core column (607) into the storage tank (729), controls the second motor (710) to slowly move the second slider (712) to adjust the clamping ring to enlarge, completely place the core column (607) into the storage tank (729), and controls the third solenoid valve to close, completing the storage of the core column (607).

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