Hydraulic bit feeding tool for oil and gas horizontal well

Abstract

The invention relates to the field of horizontal well hydraulic bit feeding, in particular to an oil and gas horizontal well hydraulic bit feeding tool. The drilling machine comprises a drilling machine body, the drilling machine body drills soil, a drill feeding device is installed on the drilling machine body and changes the drilling direction of the drilling machine body in the drilling process of the drilling machine body, the drill feeding device comprises a plurality of drill feeding pieces, and the drill feeding pieces are annularly arranged on the drilling machine body. The drill feeding piece comprises a positioning piece and a pushing piece arranged on the positioning piece. The pushing and ejecting piece is pushed through the arranged positioning piece, the pushing and ejecting piece makes contact with the well wall, the drilling direction of the drilling machine is changed through pushing between the pushing and ejecting piece and the well wall, meanwhile, in the process that the pushing and ejecting piece is pushed by the positioning piece to be close to the well wall, the pushing and ejecting piece obliquely moves outwards from the positioning piece, and the drilling direction of the drilling machine is changed. And through the pushing force of the inclined movement of the pushing piece to the well wall, the positioning piece completes multi-angle adjustment of the drilling machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hydraulic drilling of horizontal wells, in particular to a hydraulic drilling tool for oil and gas horizontal wells. BACKGROUND

[0002] When the inclination angle reaches or approaches 90°, the wellbore is drilled along the horizontal direction for a certain length, and in the process of drilling oil and gas, horizontal well drilling is performed. However, in the process of horizontal well drilling, the friction between the drill bit and the well wall is too large during the turning from the vertical well to the horizontal well, which increases the difficulty of turning the drill bit, making it impossible to accurately adjust the turning angle of the drill bit. Therefore, the operator needs to constantly adjust the forward direction of the drill bit, increasing the workload of the operator in moving the drill bit from the vertical well to the horizontal well. Meanwhile, after the drill bit enters the oil or gas layer, the drill bit cannot be well steered due to the separation of the drill bit from the well wall, increasing the difficulty of steering the drill bit in the oil or gas layer. SUMMARY

[0003] The present application aims to provide a hydraulic drilling tool for oil and gas horizontal wells to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, a hydraulic drilling tool for oil and gas horizontal wells is provided, which comprises a drilling machine that drills holes in the soil. The drilling machine is provided with a drilling device that changes the direction of drilling during the drilling process. The drilling device comprises a plurality of drilling components arranged in a ring shape on the drilling machine. The drilling component comprises a positioning component and a pushing component arranged on the positioning component. When the drilling machine needs to turn, the positioning component pushes the pushing component so that the pushing component contacts the well wall drilled by the drilling machine, thereby changing the drilling direction of the drilling machine. Meanwhile, when the positioning component pushes the pushing component, the end of the pushing component is inclined and contacts the well wall, changing the direction of the force exerted by the pushing component on the well wall. After the drilling machine enters the liquid, the resistance of the pushing component to the liquid changes the drilling direction of the drilling machine.

[0005] As a further improvement of the present technical solution, the positioning component comprises an arc-shaped positioning arc plate, the drilling machine comprises a drill rod and a mounting pipe fixed to one end of the drill rod, the inner arc surface of the positioning arc plate contacts the side wall of the mounting pipe, and the outer part of the mounting pipe is wrapped by a plurality of positioning arc plates connected to each other, and the side walls in contact between the plurality of positioning arc plates are connected together by a plurality of connecting plates.

[0006] As a further improvement of the present technical solution, the other end of the mounting pipe is fixedly connected with a drill bit, the outer edge of the drill bit and the outer edge of the plurality of positioning arc plates are on the same arc surface, and the radius of the drill rod is smaller than the radius of the drill bit.

[0007] As a further improvement of the technical solution, the positioning arc plate is provided with a placing groove, a rotating groove is formed on one side of the placing groove close to the drill bit, the pushing piece comprises an arc-shaped pushing plate, one end of the pushing plate is hingedly connected with a rotating block, the rotating block is rotationally arranged in the rotating groove, and the pushing plate is arranged in the placing groove.

[0008] As a further improvement of the technical solution, the outer arc surface of the pushing plate and the outer arc surface of the positioning arc plate are on the same arc surface, a contact arc surface is arranged on the end side wall of the placing groove away from the rotating groove, a gap is left between the contact arc surface and the pushing plate, the pushing plate rotates along with the rotating block when the rotating block rotates in the rotating groove, and the side of the pushing plate is not in contact with the side wall of the contact arc surface when the pushing plate rotates in the placing groove.

[0009] As a further improvement of the technical solution, a mounting groove is formed in the lower side of the pushing plate, a hinged column is rotationally connected to the placing groove, a hydraulic rod is hingedly connected to the hinged column, a hinged frame is hingedly connected to one end of the piston rod of the hydraulic rod, the hinged frame is rotationally connected to the pushing plate, and the piston rod of the hydraulic rod is moved outward to drive one end of the pushing plate to move outward of the placing groove.

[0010] As a further improvement of the technical solution, the hinged column is arranged in the placing groove close to the rotating groove, the hinged frame is arranged in the mounting groove away from the center, the pushing plate is moved obliquely upward of the placing groove when the piston rod of the hydraulic rod is moved outward, one end of the pushing plate is arranged obliquely, and the obliquely moved pushing plate is in contact with the well wall.

[0011] As a further improvement of the technical solution, a rotating notch is formed in one side of the rotating groove, one side of the pushing plate enters the rotating notch when the pushing plate rotates, and the rotating notch is arranged on one side of the rotating direction of the pushing plate.

[0012] As a further improvement of the technical solution, an arc-shaped upper pushing block is fixed on the placing groove away from the rotating groove, the upper pushing block is arranged on one side of the placing groove away from the rotating notch, the upper pushing block is in contact with the side wall of the mounting groove when the pushing plate is arranged in the placing groove, and the upper pushing block supports the pushing plate when the pushing plate is obliquely pushed by the hydraulic rod.

[0013] As a further improvement of the technical solution, a mounting slot is formed in the upper side of the pushing plate, a plurality of roller shafts are rotationally connected in the mounting slot, and the roller shafts are arranged obliquely in the mounting slot, and the roller shafts and the well wall are in rolling friction when the pushing plate is arranged in contact with the well wall.

[0014] Compared with the prior art, the present application has the following advantages: 1. In the hydraulic drilling tool for oil and gas horizontal well, the pushing element is pushed by the positioning element to contact the well wall, the direction of the drilling rig drilling is changed by the pushing between the pushing element and the well wall, and the positioning element is adjusted at multiple angles by the inclined outward movement of the pushing element from the positioning element during the process of the pushing element being pushed by the positioning element to approach the well wall, so that the drilling rig can be turned in different directions, and the operator can accurately operate the drilling direction of the drilling rig, thereby reducing the difficulty of the worker controlling the movement of the drilling rig.

[0015] 2. In the hydraulic drilling tool for oil and gas horizontal well, when the drilling rig enters the oil or natural gas, the inclined pushing element forms a paddle to adjust the direction of the drilling rig advancing when the drilling device is rotating and moving, thereby changing the problem of the drilling rig turning in the oil or natural gas, so that the drilling rig can adjust the direction in the oil or natural gas, thereby reducing the difficulty of the drilling rig changing the angle. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the normal rotation structure of the overall structure of the present application. Figure 2 It is a schematic view of the turning structure of the overall structure of the present application. Figure 3 It is a schematic view of the drilling rig structure of the present application. Figure 4 It is a schematic view of the normal rotation structure of the drilling device of the present application. Figure 5 It is a schematic view of the turning structure of the drilling device of the present application. Figure 6 It is a schematic view of the drilling element structure of the present application. Figure 7 It is a schematic view of the positioning element structure of the present application. Figure 8 It is a schematic view of the pushing element structure of the present application. Figure 9 It is a schematic view of the pushing element structure of the present application.

[0017] The meanings of the various reference numbers in the figure are as follows: 1. Drilling rig; 11. Drill pipe; 12. Drill bit; 13. Installation pipe; 2. Drilling device; 21. Positioning element; 211. Positioning arc plate; 212. Placement groove; 213. Rotation groove; 214. Rotation notch; 215. Hydraulic rod; 216. Pushing block; 217. Contact arc surface; 22. Pushing component; 221. Rotating block; 222. Push plate; 223. Mounting slot; 224. Roller; 225. Mounting groove; 23. Connecting plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Example 1

[0020] When the well inclination angle reaches or approaches 90°, and the wellbore is drilled to a certain length horizontally, horizontal wells are drilled during the exploration of oil and gas. However, during the process of drilling horizontal wells, the friction between the drill bit and the well wall is too great when turning from the vertical shaft to the horizontal shaft. This increases the difficulty of turning the drill bit and makes it impossible to adjust the turning angle of the drill bit accurately. As a result, the workers need to constantly adjust the forward direction of the drill bit, increasing the workload of moving the drill bit from the vertical shaft to the horizontal shaft. At the same time, after the drill bit enters the oil or gas layer, the drill bit detaches from the well wall, making it impossible for the drill bit to turn well, which increases the difficulty of turning the drill bit in oil or gas.

[0021] Please see Figures 1-9 As shown, the purpose of this embodiment is to provide a hydraulic drilling tool for horizontal wells in oil and gas, including a drilling rig 1, which drills holes in the soil. A drilling feed device 2 is installed on the drilling rig 1. During the drilling process, the drilling feed device 2 changes the drilling direction of the drilling rig 1, thereby changing the drilling trajectory of the drilling rig 1.

[0022] However, during drilling operations, to facilitate the control of the drilling direction by the drilling feed device 2 and enable accurate adjustment of the drilling angle, the structure of the drilling feed device 2 is described in detail. The drilling feed device 2 comprises several drilling feed components arranged in a ring on the drilling rig 1. Each drilling feed component includes a positioning component 21 and a pusher component 22 mounted on the positioning component 21. When the drilling rig 1 needs to turn, the positioning component 21 pushes the pusher component 22, causing it to contact the well wall drilled by the drilling rig 1, thereby changing the drilling direction of the drilling rig 1. Simultaneously, the positioning component 21 pushes the pusher component 22... When the pusher 22 is tilted and contacts the well wall, the direction of the force exerted by the pusher 22 on the well wall is changed, allowing the positioning component 21 to adjust the drilling rig 1 at multiple angles. This allows the drilling rig 1 to turn in different directions. At the same time, based on the push of the pusher 22 when it contacts the well wall, the operator can accurately operate the drilling direction of the drilling rig 1, reducing the difficulty of controlling the movement of the drilling rig 1. Furthermore, after the drilling rig 1 enters the liquid, the resistance of the pusher 22 to the liquid changes the drilling direction of the drilling rig 1, allowing the drilling rig 1 to adjust its direction in oil or natural gas, reducing the difficulty of changing the angle of the drilling rig 1.

[0023] The following describes the structure of the positioning component 21 and the pushing component 22, and provides a corresponding detailed description of the structure of the drilling rig 1. Please refer to the following description. Figures 3-9 As shown, the positioning component 21 includes an arc-shaped positioning arc plate 211. The drilling rig 1 includes a drill rod 11 and an installation pipe 13 fixed to one end of the drill rod 11. The other end of the installation pipe 13 is fixedly connected to a drill bit 12. The inner arc surface of the positioning arc plate 211 contacts the side wall of the installation pipe 13, and several positioning arc plates 211 are interconnected to wrap the outside of the installation pipe 13. Several connecting plates 23 are connected together on the side walls of the contacting components between the several positioning arc plates 211. The drilling device 2 is fixed to the drilling rig 1 by the several positioning arc plates 211 fixed to the installation pipe 13. At the same time, the drilling device 2 is located near the drill bit 12. When the pusher 22 pushes the well wall, it is easy to change the drilling direction of the drill bit 12 and reduce the difficulty of adjusting the angle of the drilling rig 1.

[0024] Meanwhile, the outer edge of the drill bit 12 and the outer edges of several positioning arc plates 211 are on the same arc surface, and the radius of the drill rod 11 is smaller than the radius of the drill bit 12. Thus, when the drill bit 12 is drilling in a straight line, the drilling device 2 will not obstruct the drilling of the drill bit 12, and the drill rod 11 can move along the drilling channel of the drill bit 12.

[0025] The positioning arc plate 211 has a placement groove 212, and a rotating groove 213 is formed on the side of the placement groove 212 near the drill bit 12. The pusher 22 includes an arc-shaped push plate 222, one end of which is hinged to a rotating block 221. The rotating block 221 is rotatably disposed inside the rotating groove 213. The push plate 222 is disposed in the placement groove 212. During use, the rotating block 221 rotates in the rotating groove 213, and the push plate 222 rotates around the position hinged to the rotating block 221. The outer arc surface of the push plate 222 and the outer arc surface of the positioning arc plate 211 are also connected. The arc surfaces are on the same arc surface, and a contact arc surface 217 is provided on the side wall of the placement groove 212 away from the rotation groove 213. There is a gap between the contact arc surface 217 and the push plate 222. When the rotating block 221 rotates in the rotation groove 213, the push plate 222 rotates with the rotating block 221. When the push plate 222 rotates in the placement groove 212, one side of the push plate 222 does not contact the side wall of the contact arc surface 217. This ensures that the contact arc surface 217 will not hinder the movement of the push plate 222 when the push plate 222 rotates.

[0026] To allow the push plate 222 to rotate and move, a mounting groove 225 is provided on the lower side of the push plate 222. A hinge column is rotatably connected to the placement groove 212, and a hydraulic rod 215 is hinged to the hinge column. One end of the piston rod of the hydraulic rod 215 is hinged to a hinge frame, which is rotatably connected to the push plate 222. When the piston rod on the hydraulic rod 215 extends outward, it drives one end of the push plate 222 to move outward from the placement groove 212. To ensure that the rotational position of the push plate 222 is restricted and fixed, and to ensure that the push plate 222 moves along a predetermined trajectory, the following measures are taken. The hinge column is installed in the placement slot 212 near the rotating slot 213, and the hinge frame is installed in the installation slot 225 off-center. When the piston rod of the hydraulic rod 215 extends outward, the push plate 222 moves obliquely upward toward the placement slot 212, so that one end of the push plate 222 is tilted and the tilted push plate 222 contacts the well wall. Through the pushing force of the tilting movement of the pusher 22 on the well wall, the positioning member 21 completes the multi-angle adjustment of the drilling rig 1, so that the drilling rig 1 can turn in different directions.

[0027] To ensure that the push plate 222 can rotate normally, a rotation notch 214 is provided on one side of the rotation groove 213. When the push plate 222 rotates, one side of the push plate 222 enters the rotation notch 214. The rotation notch 214 is set on one side of the rotation direction of the push plate 222. When the push plate 222 rotates, one side of the push plate 222 enters the rotation notch 214. At the same time, the rotation notch 214 is set on one side of the rotation groove 213. This restricts the rotation direction of the push plate 222, so that the push plate 222 can only rotate in the direction of the rotation notch 214.

[0028] When the push plate 222 is tilted, it will push the well wall after contacting it, thereby changing the drilling direction of the drill bit 12. In order to improve the stability of the contact between the push plate 222 and the well wall, an arc-shaped upper push block 216 is fixed on the placement groove 212 at a position away from the rotating groove 213. The upper push block 216 is located on the side of the placement groove 212 away from the rotating notch 214. When the push plate 222 is placed in the placement groove 212, the upper push block 216 contacts the side wall of the mounting groove 225. When the hydraulic rod 215 pushes the push plate 222 to tilt, the upper push block 216 supports the push plate 222 through contact with the mounting groove 225, thereby improving the stability of the contact between the push plate 222 and the side wall of the well wall.

[0029] In order to reduce the friction between the push plate 222 and the well wall, an installation slot 223 is provided on the upper side of the push plate 222. Several rollers 224 are rotatably connected in the installation slot 223, and the rollers 224 are inclined in the installation slot 223. When the push plate 222 is in contact with the well wall, the rollers 224 and the well wall roll and rub against each other.

[0030] Usage process: When drilling rig 1 is performing straight drilling, push plate 222 is positioned inside placement slot 212. When drilling rig 1 needs to turn to change the drilling angle, the piston rod in hydraulic rod 215 extends outward, causing one end of push plate 222 to rotate towards the rotation notch 214. Due to the support of upper push block 216 on push plate 222 and the pull of rotating block 221 on pusher 22 when hydraulic rod 215 pushes push plate 222, rotating block 221 rotates in rotation slot 213, and push plate 222... Rotating around the rotating block 221 causes the push plate 222 to move obliquely upward towards the placement slot 212. The moving push plate 222 contacts the well wall, and the roller shaft 224 rolls against the well wall, reducing the friction between the well wall and the push plate 222. At the same time, the tilted push plate 222 pushes against the well wall, changing the drilling direction of the drill bit 12. The angle and distance of the push plate 222 can be controlled to control the extent of the angle change of the drill bit 12, making it convenient for the operator to control the drilling direction of the drill bit 12.

[0031] When the drill bit 12 drills into oil or natural gas, the inclined pusher 22 forms a blade, which causes the drill rig 1 to drive the drilling device 2 to rotate and move, thereby adjusting the direction of the drill rig 1. This solves the problem of the drill rig 1 turning in oil or natural gas, and makes the drill rig 1 able to adjust its direction in oil or natural gas, reducing the difficulty of the drill rig 1 changing its angle.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic drilling tool for horizontal wells in oil and gas, comprising a drilling rig (1) for drilling holes in soil, wherein a drilling feed device (2) is installed on the drilling rig (1) and the drilling feed device (2) changes the drilling direction of the drilling rig (1) during the drilling process, characterized in that: The drilling device (2) consists of several drilling components arranged in a ring on the drilling rig (1). The drilling components include a positioning component (21) and a pusher component (22) on the positioning component (21). When the drilling rig (1) needs to turn, the positioning component (21) pushes the pusher component (22) so that the pusher component (22) contacts the well wall drilled by the drilling rig (1) to change the drilling direction of the drilling rig (1). At the same time, when the positioning component (21) pushes the pusher component (22), it causes one end of the pusher component (22) to tilt and contact the well wall, changing the direction of the force applied by the pusher component (22) to the well wall. At the same time, after the drilling rig (1) enters the liquid, the resistance of the pusher component (22) to the liquid changes the drilling direction of the drilling rig (1).

2. The hydraulic drilling tool for horizontal wells in oil and gas according to claim 1, characterized in that: The positioning component (21) includes an arc-shaped positioning arc plate (211). The drilling rig (1) includes a drill rod (11) and an installation tube (13) fixed to one end of the drill rod (11). The inner arc surface of the positioning arc plate (211) contacts the side wall of the installation tube (13), and several positioning arc plates (211) are connected to each other to wrap the outside of the installation tube (13). The side walls of several positioning arc plates (211) that are in contact with each other are connected together by several connecting plates (23).

3. The hydraulic drilling tool for horizontal wells in oil and gas according to claim 2, characterized in that: The other end of the mounting tube (13) is fixedly connected to a drill bit (12). The outer edge of the drill bit (12) and the outer edges of several positioning arc plates (211) are on the same arc surface, and the radius of the drill rod (11) is smaller than the radius of the drill bit (12).

4. The hydraulic drilling tool for horizontal wells in oil and gas according to claim 2, characterized in that: The positioning arc plate (211) is provided with a placement groove (212), and a rotating groove (213) is provided on the side of the placement groove (212) near the drill bit (12). The pusher (22) includes an arc-shaped push plate (222), and a rotating block (221) is hinged to one end of the push plate (222). The rotating block (221) is rotatably disposed inside the rotating groove (213), and the push plate (222) is disposed in the placement groove (212).

5. The hydraulic drilling tool for horizontal wells in oil and gas according to claim 4, characterized in that: The outer arc surface of the push plate (222) and the outer arc surface of the positioning arc plate (211) are on the same arc surface, and a contact arc surface (217) is provided on the side wall of the placement groove (212) away from the rotating groove (213). A gap is left between the contact arc surface (217) and the push plate (222). When the rotating block (221) rotates in the rotating groove (213), the push plate (222) rotates with the rotating block (221). When the push plate (222) rotates in the placement groove (212), one side of the push plate (222) does not contact the side wall of the contact arc surface (217).

6. The hydraulic drilling tool for horizontal wells in oil and gas according to claim 4, characterized in that: The push plate (222) has an installation groove (225) on its lower side. A hinge column is rotatably connected to the placement groove (212). A hydraulic rod (215) is hinged to the hinge column. One end of the piston rod of the hydraulic rod (215) is hinged to a hinge frame. The hinge frame is rotatably connected to the push plate (222). When the piston rod on the hydraulic rod (215) extends outward, it drives one end of the push plate (222) to move towards the outside of the placement groove (212).

7. The hydraulic drilling tool for horizontal wells in oil and gas according to claim 6, characterized in that: The hinge column is installed in the placement slot (212) near the rotating slot (213), and the hinge frame is installed in the mounting slot (225) off-center. When the piston rod of the hydraulic rod (215) extends outward, the push plate (222) moves obliquely upward toward the placement slot (212), so that one end of the push plate (222) is tilted and the tilted push plate (222) contacts the well wall.

8. The hydraulic drilling tool for horizontal wells in oil and gas according to claim 7, characterized in that: A rotation notch (214) is provided on one side of the rotating groove (213). When the push plate (222) rotates, one side of the push plate (222) enters the rotation notch (214). The rotation notch (214) is located on one side of the rotation direction of the push plate (222).

9. The hydraulic drilling tool for horizontal wells in oil and gas according to claim 8, characterized in that: An arc-shaped push block (216) is fixed on the placement groove (212) at a position away from the rotating groove (213). The push block (216) is located on the side of the placement groove (212) away from the rotating notch (214). When the push plate (222) is placed in the placement groove (212), the push block (216) contacts the side wall of the mounting groove (225). When the hydraulic rod (215) pushes the push plate (222) to tilt, the push block (216) supports the push plate (222) by contacting the mounting groove (225).

10. The hydraulic drilling tool for horizontal wells in oil and gas according to claim 4, characterized in that: The push plate (222) has an installation slot (223) on its upper side. Several rollers (224) are rotatably connected in the installation slot (223). The rollers (224) are inclined in the installation slot (223). When the push plate (222) is in contact with the well wall, the rollers (224) and the well wall roll and rub against each other.

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