An oil well injection and production device with anti-clogging function

Abstract

The present invention discloses an oil well injection and production device with an anti-clogging function, which relates to the technical field of marine drilling and oil production. The device comprises a drill pipe and a drill bit, and also comprises: a fixed cylinder, which is rotatably connected to the top of the drill bit and is installed at the bottom of the drill pipe, and a plurality of water holes are opened inside the drill bit; a driving mechanism, which is installed inside the fixed cylinder and is used to drive the drill bit to rotate; a linked eye-clearing mechanism, which comprises a turntable installed on the driving mechanism and a plurality of push rods installed on the turntable; a sub-control mechanism, which comprises an adjustment seat installed inside the fixed cylinder and an elastic reset assembly installed outside the push rod; by driving each push rod to clear the blockage inside each water hole in turn, the patency of the water hole is guaranteed, and the problem of rock cuttings generated by drilling blocking the water hole is avoided; by driving each push rod to clear the blockage inside each water hole in turn, the problem of affecting the amount of drilling fluid passing through when cleaning the water holes at the same time is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore drilling and oil production, and in particular to an oil production downhole injection and production device with an anti-clogging function. Background Art

[0002] Offshore oil extraction refers to the act of digging and extracting oil from places where oil is stored. During the oil extraction process, oil and gas flow from the reservoir to the bottom of the well and then rise from the bottom of the well to the wellhead. Drilling fluid is used in the oil extraction process. The purpose of drilling fluid is to maintain the stability of the well wall, remove rock cuttings generated by drilling and protect drilling equipment. The drilling fluid is transported through the drill pipe and sprayed out through the water holes on the drill bit.

[0003] In existing mining equipment, the water holes on the drill bit are easily blocked to varying degrees by rock cuttings generated during the drilling process. Once the water holes are blocked, it will directly affect the flow rate and flow rate of the drilling fluid, thereby weakening the stability of the well wall and making it difficult to effectively discharge the rock cuttings generated by drilling. Summary of the Invention

[0004] The purpose of the present invention is to provide an oil production downhole injection and production device with an anti-clogging function to solve the problem in the prior art that the water holes on the drill bit are easily blocked to varying degrees by rock cuttings generated during the drilling process. Once the water holes are blocked, it will directly affect the throughput and flow rate of the drilling fluid, thereby weakening the stability of the well wall and making it difficult to effectively discharge the rock cuttings generated during drilling.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a downhole oil production injection and production device with anti-clogging function, comprising a drill pipe and a drill bit, and further comprising:

[0006] A fixed cylinder is rotatably connected to the top of the drill bit and installed at the bottom of the drill rod. A plurality of water holes are opened through the interior of the drill bit.

[0007] A driving mechanism, which is installed inside the fixed cylinder and is used to drive the drill bit to rotate;

[0008] A linkage eye-clearing mechanism comprises a turntable mounted on the driving mechanism and a plurality of push rods mounted on the turntable, wherein the plurality of push rods respectively correspond to the plurality of water holes;

[0009] The sub-control mechanism comprises an adjustment seat installed inside the fixing cylinder and an elastic reset component installed outside the push rod.

[0010] Furthermore, the driving mechanism includes a bracket installed inside the fixed cylinder, a motor installed at the bottom of the bracket and a main shaft fixed to the output end of the motor;

[0011] The bottom end of the main shaft is fixedly connected to the center of the top of the drill bit.

[0012] Furthermore, the plurality of water holes are evenly distributed in a circular array with the main axis as the center, and the plurality of push rods are evenly distributed in a circular array with the main axis as the center.

[0013] Furthermore, the turntable is fixedly sleeved on the outside of the main shaft, the turntable is a conical structure, and a plurality of structural grooves are opened through the inside of the turntable, and the plurality of push rods are respectively arranged through the plurality of structural grooves and are slidably connected to the structural grooves.

[0014] Furthermore, the adjustment seat is an annular structure and is located outside the motor. The bottom of the adjustment seat is provided with an oblique groove along the annular track.

[0015] Furthermore, the elastic reset assembly includes a spring sleeved on the outside of the push rod and a limit block fixedly sleeved on the outside of the push rod;

[0016] The top end of the spring is fixedly connected to the bottom of the limit block, and the bottom end of the spring is fixedly connected to the inner wall of the bottom of the structural groove;

[0017] The top and bottom ends of the push rod are both hemispherical structures, and the top end of the push rod abuts against the oblique groove.

[0018] Furthermore, a slag return groove with a funnel-shaped structure is provided on the inner wall of the bottom of the fixed cylinder.

[0019] Compared with the prior art, the present invention provides an oil well injection and production device with anti-clogging function, which has the following beneficial effects:

[0020] 1. When the main shaft drives the drill bit to rotate, the turntable rotates synchronously with it, and then drives multiple push rods to rotate synchronously with each water hole. Each push rod moves circumferentially along the bottom of the oblique groove. In this process, the rebound force of the spring makes the top of the push rod always contact the inner wall of the oblique groove. Then, when each push rod moves circumferentially with the main shaft as the center, it moves up and down in turn, thereby clearing the blockage inside each water hole in turn, ensuring the patency of the water hole and avoiding the problem of rock debris generated by drilling blocking the water hole;

[0021] 2. By driving each push rod to clean the blockage inside each water hole in turn, the problem of affecting the flow rate of drilling fluid when cleaning the water holes at the same time is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction to the drawings required for use in the embodiments will be given below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these 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 internal structure of the fixing cylinder and the drill bit of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the driving mechanism, linked eye-clearing mechanism and sub-control mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the sub-control mechanism and the structural slot structure of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the adjustment seat of the present invention.

[0028] Description of reference numerals:

[0029] 1. Drill rod; 2. Drill bit; 3. Fixed tube; 4. Water hole; 5. Turntable; 6. Mandrel; 7. Adjustment seat; 8. Bracket; 9. Motor; 10. Spindle; 11. Structural slot; 12. Oblique slot; 13. Spring; 14. Limit block; 15. Slag return slot. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example: See Figure 1-Figure 5 A downhole oil production injection and production device with an anti-clogging function includes a drill pipe 1 and a drill bit 2. The bottom of the drill bit 2 is composed of multiple cutting teeth, and further includes:

[0032] A fixed cylinder 3 is rotatably connected to the top of the drill bit 2 and mounted on the bottom of the drill rod 1. A plurality of water holes 4 are formed through the interior of the drill bit 2. The plurality of water holes 4 are evenly distributed in a circular array around the main shaft 10. The water holes 4 are located between two adjacent cutting teeth.

[0033] During the drilling process, the drilling fluid is discharged into the fixed tube 3 through the drill pipe 1 and sprayed out through the water hole 4 to improve the rock breaking efficiency and cool the drill bit 2. During the upward return of the drilling fluid, the cuttings generated by drilling are taken out.

[0034] The drive mechanism is mounted inside the fixed cylinder 3 and is used to drive the drill bit 2 to rotate. The drive mechanism includes a bracket 8 mounted inside the fixed cylinder 3, a motor 9 mounted at the bottom of the bracket 8, and a spindle 10 fixed to the output end of the motor 9; the bottom end of the spindle 10 is fixed to the center of the top of the drill bit 2;

[0035] The main shaft 10 is driven to rotate by controlling the motor 9. During the rotation process, the main shaft 10 drives the drill bit 2 to rotate synchronously to perform drilling work.

[0036] The linkage eye-clearing mechanism includes a turntable 5 mounted on the driving mechanism and a plurality of push rods 6 mounted on the turntable 5. The plurality of push rods 6 respectively correspond to the plurality of water eyes 4. The plurality of push rods 6 are evenly distributed in a ring array with the main shaft 10 as the center. The turntable 5 is fixedly sleeved on the outside of the main shaft 10. The turntable 5 is a conical structure, and a plurality of structural grooves 11 are opened through the interior of the turntable 5. The plurality of push rods 6 are respectively arranged through the plurality of structural grooves 11 and are slidably connected to the structural grooves 11.

[0037] When the main shaft 10 drives the drill bit 2 to rotate, the turntable 5 rotates synchronously therewith, thereby driving multiple push rods 6 to rotate synchronously with each water hole 4, so that when each push rod 6 moves up and down in turn, the blockage in the corresponding water hole 4 can be cleared.

[0038] The sub-control mechanism includes an adjustment seat 7 installed inside the fixed cylinder 3 and an elastic reset assembly installed outside the push rod 6. The adjustment seat 7 is an annular structure and is located outside the motor 9. The bottom of the adjustment seat 7 is provided with an oblique groove 12 along the annular track. The elastic reset assembly includes a spring 13 sleeved on the outside of the push rod 6 and a limit block 14 fixedly sleeved on the outside of the push rod 6; the top end of the spring 13 is fixedly connected to the bottom of the limit block 14, and the bottom end of the spring 13 is fixedly connected to the inner wall of the bottom of the structural groove 11; the top and bottom ends of the push rod 6 are both hemispherical structures, and the top end of the push rod 6 abuts against the oblique groove 12;

[0039] When the turntable 5 rotates, it drives each push rod 6 to make a circumferential motion along the bottom of the oblique groove 12. In this process, the top end of the push rod 6 is always in contact with the inner wall of the oblique groove 12 through the rebound force of the spring 13. Then, when each push rod 6 makes a circumferential motion with the main shaft 10 as the center, it moves up and down in turn, thereby clearing the blockage inside each water hole 4 in turn, ensuring the patency of the water hole 4 and avoiding the problem of rock debris generated by drilling blocking the water hole 4.

[0040] A funnel-shaped slag return groove 15 is provided on the inner wall of the bottom of the fixed cylinder 3;

[0041] During the drilling process, there is a possibility that a small amount of rock cuttings will enter the interior of the fixed barrel 3 through the slag return groove 15. The setting of the slag return groove 15 causes the rock cuttings to gather toward the water eye 4. In conjunction with the up and down movement of the push rod 6 and the flow of drilling fluid, the rock cuttings are brought out from the interior of the fixed barrel 3.

[0042] Working principle: During the drilling process, the main shaft 10 is driven to rotate by controlling the motor 9. During the rotation process, the main shaft 10 drives the drill bit 2 to rotate synchronously to perform drilling work. The drilling fluid is discharged into the fixed tube 3 through the drill pipe 1 and sprayed out through the water hole 4 to improve the rock breaking efficiency and cool the drill bit 2. During the upward return of the drilling fluid, the rock cuttings generated by drilling are taken out. When the main shaft 10 drives the drill bit 2 to rotate, the turntable 5 rotates synchronously therewith, and then drives multiple push rods 6 to rotate synchronously with each water hole 4. Each push rod 6 makes a circumferential motion along the bottom of the oblique groove 12. In this process, the rebound force of the spring 13 keeps the top of the push rod 6 and the inner wall of the oblique groove 12 always in contact with each other. The abutment, and then when each push rod 6 makes a circumferential motion with the main shaft 10 as the center, it moves up and down in turn, thereby cleaning the blockages inside each water hole 4 in turn, ensuring the patency of the water hole 4, and avoiding the problem of rock chips generated by drilling blocking the water hole 4. In addition, by driving each push rod 6 to clean the blockages inside each water hole 4 in turn, the problem of affecting the amount of drilling fluid passing through when cleaning the water hole 4 at the same time is avoided. During the drilling process, there is a possibility that a small amount of rock chips will enter the fixed tube 3 through the return slag groove 15. The setting of the return slag groove 15 makes the rock chips gather toward the water hole 4 position, and cooperate with the up and down movement of the push rod 6 and the flow of drilling fluid to bring the rock chips out from the inside of the fixed tube 3.

[0043] It should be noted that the device structure and drawings of the present invention mainly describe the principles of the present invention. In terms of the technology of this design principle, the settings of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art can clearly understand the details of its power mechanism, power supply system, and control system on the premise that they understand the principles of the above invention. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be implemented by simple programming by those skilled in the art. The above only describes certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present invention.

[0044] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

Claims

1. A downhole oil production injection and production device with an anti-clogging function, comprising a drill rod (1) and a drill bit (2), characterized in that: Also includes: A fixed cylinder (3) is rotatably connected to the top of the drill bit (2) and is installed at the bottom of the drill rod (1). A plurality of water holes (4) are formed through the interior of the drill bit (2); A driving mechanism, which is installed inside the fixed cylinder (3) and is used to drive the drill bit (2) to rotate; A linkage eye-clearing mechanism comprises a turntable (5) mounted on a driving mechanism and a plurality of push rods (6) mounted on the turntable (5), wherein the plurality of push rods (6) respectively correspond to the plurality of water eyes (4), the turntable (5) is fixedly sleeved on the outside of a main shaft (10), the turntable (5) is a conical structure, and a plurality of structural grooves (11) are provided through the inside of the turntable (5), and the plurality of push rods (6) respectively penetrate the plurality of structural grooves (11) and are slidably connected to the structural grooves (11); The sub-control mechanism comprises an adjustment seat (7) installed inside a fixed cylinder (3) and an elastic reset assembly installed outside a push rod (6); the adjustment seat (7) is an annular structure, and an oblique groove (12) is provided at the bottom of the adjustment seat (7) along an annular track; the elastic reset assembly comprises a spring (13) sleeved on the outside of the push rod (6) and a limit block (14) fixedly sleeved on the outside of the push rod (6); the top end of the spring (13) is fixedly connected to the bottom of the limit block (14), and the bottom end of the spring (13) is fixedly connected to the inner wall of the bottom of the structural groove (11); the top and bottom ends of the push rod (6) are both hemispherical structures, and the top end of the push rod (6) abuts against the oblique groove (12).

2. The oil well injection and production device with anti-clogging function according to claim 1 is characterized in that: The driving mechanism comprises a bracket (8) mounted inside the fixed cylinder (3), a motor (9) mounted at the bottom of the bracket (8), and a main shaft (10) fixed to the output end of the motor (9); The bottom end of the main shaft (10) is fixedly connected to the center of the top of the drill bit (2).

3. The oil well injection and production device with anti-clogging function according to claim 2 is characterized in that: The plurality of water holes (4) are evenly distributed in a ring array with the main axis (10) as the center, and the plurality of push rods (6) are evenly distributed in a ring array with the main axis (10) as the center.

4. The oil production downhole injection and production device with anti-clogging function according to claim 3 is characterized in that: The adjustment seat (7) is located outside the motor (9).

5. The oil well injection and production device with anti-clogging function according to claim 4 is characterized in that: A funnel-shaped slag return groove (15) is provided on the inner wall of the bottom of the fixed cylinder (3).

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