Resistance and friction reducing device for tight oil shale oil exploitation well drilling

Abstract

The utility model discloses a resistance and friction reducing device for tight oil shale oil exploitation well drilling, which comprises a leveling assembly, the leveling assembly comprises a drill rod, a combined frame is arranged at one end of the drill rod, the combined frame is of a split type design, a plurality of groups of fixed supports are arranged on the outer wall of the combined frame and are respectively arranged on two sides of the combined frame, and the fixed supports are arranged on the outer wall of the combined frame. A screw hole is formed in the fixing support, a gasket is arranged on one side of the fixing support, an open hole matched with the screw hole is formed in the center of the gasket, a plurality of sets of installation frames are symmetrically installed on the outer walls of the two sides of the combined frame respectively, a speed adjusting motor is arranged on the outer wall of one side of each installation frame, and one end of each speed adjusting motor is connected with a transmission shaft. A crushing roller is installed at one end of the transmission shaft, an adjusting assembly used for adjusting the bending angle is arranged at one end of the drill rod, a lubricating assembly used for reducing resistance is arranged on one side of the combined frame, the adjusting assembly comprises an upper sleeve, and a supporting frame is installed at the bottom end of the upper sleeve.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drilling, especially to a drag reduction and friction reduction device for tight oil shale oil exploitation drilling. BACKGROUND

[0002] The exploitation of tight oil and shale oil is realized through a series of complex engineering technologies, mainly including horizontal well drilling and multi-stage fracturing technologies, etc. During the drilling process of tight oil shale oil exploitation, a certain amount of friction will be generated between the drill string and the well wall, thereby affecting the drilling speed. At the same time, there will be certain protruding stones in the well wall, which will block the movement of the drill string and cause certain bumping, thereby causing the drill string to be damaged and affecting the drilling.

[0003] Through retrieval, the patent with the Chinese patent application number 201220548600.8 discloses a drag reduction centralizer, which comprises a body, a drag reduction sleeve, bearings, and a nut. The body is a reverse T-shaped tubular column, and both ends are provided with connecting threads. The drag reduction sleeve is sleeved on the body through upper and lower bearings and is fixed by the nut. The drag reduction centralizer in the above-mentioned patent has the following disadvantages: the device does not set an effective crushing device to flatten the protruding stones in the well wall during use. Without flattening the protruding stones, the device will be affected by the stones, causing the blockage of the movement of the drill string and the bumping of the drill string, thereby causing the drill string to be damaged and affecting the normal drilling, reducing the drilling efficiency and shortening the service life of the drill string. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a drag reduction and friction reduction device for tight oil shale oil exploitation drilling.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A drag reduction and friction reduction device for tight oil shale oil exploitation drilling, comprising a flattening assembly, the flattening assembly comprises a drill rod, one end of the drill rod is provided with a combined frame, the combined frame is designed in a split type, a fixed support is arranged on the outer wall of the combined frame, the fixed support is provided with a plurality of groups, which are respectively installed on both sides of the combined frame, the fixed support is provided with a screw hole, a gasket is arranged on one side of the fixed support, the gasket is provided with an opening hole matched with the screw hole in the center, a plurality of groups of mounting frames are symmetrically installed on the outer walls of both sides of the combined frame, a speed regulating motor is arranged on one side of the mounting frame, a transmission shaft is connected to one end of the speed regulating motor, the transmission shaft is rotatably penetrated through the mounting frame at one end, a crushing roller is installed at one end of the transmission shaft, an adjusting assembly for bending adjustment of the angle is arranged at one end of the drill rod, and a lubricating assembly for reducing resistance is arranged on one side of the combined frame.

[0007] As a further scheme of the utility model: the adjusting assembly includes upper sleeve pipe, the bottom end of upper sleeve pipe is installed with support frame, the outer wall of one side of support frame is provided with adjusting motor, the one end of adjusting motor is connected with connecting shaft, the one end of connecting shaft is rotatably penetrated through support frame and is arranged, the one end of connecting shaft is installed with adjusting frame, the bottom end of adjusting frame is installed with lower sleeve pipe, and lower sleeve pipe is fixed at the end of drill pipe.

[0008] As a further scheme of the utility model: the lubricating assembly includes liquid storage tank, a plurality of groups of liquid storage tanks are arranged and are fixed on the top of combined frame, liquid storage tank top is connected with liquid adding pipe, one side of liquid storage tank is connected with conveying pump, and the side of conveying pump is connected with spray head.

[0009] As a further scheme of the utility model: the outer wall of combined frame is fixed with connecting frame through bolt, a plurality of groups of connecting frames are arranged and are symmetrically installed on the outer wall of both sides of combined frame, fixed shaft is installed through connecting frame, and the one end of fixed shaft is rotatably installed with rotating wheel.

[0010] As a further scheme of the utility model: the one side of fixed support is provided with fixed slot, and the one side of fixed slot is provided with U-shaped fixed pin.

[0011] As a further scheme of the utility model: the one end of liquid adding pipe is installed with connecting flange, the top of connecting flange is provided with recess, and gasket is installed through recess.

[0012] As a further scheme of the utility model: the outer wall of rotating wheel is provided with protective sleeve, and protective sleeve is made of rubber material.

[0013] The utility model discloses beneficial effect is:

[0014] 1. when the drill pipe moves in the well, the combined frame moves together, the broken roller contacts the well wall, the transmission shaft and the broken roller can be controlled to rotate through the speed regulation motor, the protruding stone can be broken through controlling the broken roller to contact the well wall and rotate, thereby completing the flattening in the well wall, avoiding the influence of the protruding stone in the well wall on the movement of the drill pipe and reducing the drilling efficiency, and the drill pipe can be prevented from being damaged by the impact of the stone and reduced in service life.

[0015] 2. when the angle needs to be adjusted to control the inclination of the drill pipe during drilling, the adjusting frame and the lower sleeve pipe can be controlled to rotate synchronously through the rotation of the connecting shaft controlled by the adjusting motor, thereby adjusting the angle of the drill pipe fixed to the lower sleeve pipe, so that the angle can be conveniently adjusted according to the need.

[0016] 3. water can be added to the liquid storage tank through the liquid adding pipe connected with the water supply pipe, the water in the liquid storage tank can be conveyed through the conveying pump during drilling, and the water can be injected into the well through the spray head, so that the well wall can be lubricated, and the resistance and friction can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A kind of compact oil shale oil exploitation drilling is used to the structure schematic diagram of the main view angle of drag reduction device of the utility model is proposed;

[0018] Figure 2 A kind of compact oil shale oil exploitation drilling is used to the structure schematic diagram of broken part of drag reduction device of the utility model is proposed;

[0019] Figure 3 A kind of compact oil shale oil exploitation drilling is used to the structure schematic diagram of lubricating part of drag reduction device of the utility model is proposed;

[0020] Figure 4 A kind of compact oil shale oil exploitation drilling is used to the structure schematic diagram of adjusting part of drag reduction device of the utility model is proposed.

[0021] In the drawing: 1-drill pipe, 2-combination frame, 3-speed regulating motor, 4-mounting frame, 5-crushing roller, 6-fixed shaft, 7-turbine, 8-protective sleeve, 9-connection frame, 10-conveying pump, 11-upper sleeve, 12-support frame, 13-regulating motor, 14-regulating frame, 15-lower sleeve, 16-connection flange, 17-liquid adding pipe, 18-liquid storage tank, 19-fixed support, 20-fixed pin, 21-gasket, 22-transmission shaft, 23-fixed groove, 24-connection shaft. DETAILED DESCRIPTION

[0022] The technical solutions of the utility model will be further described in detail in combination with specific embodiments.

[0023] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0024] Embodiment 1

[0025] A kind of compact oil shale oil exploitation drilling is used to the structure schematic diagram of the main view angle of drag reduction device of the utility model is proposed; Figures 1-4As shown, including the leveling assembly, the leveling assembly includes drill pipe 1, one end of drill pipe 1 is provided with combination frame 2, combination frame 2 is split design, the outer wall of combination frame 2 is provided with fixed support 19, fixed support 19 is provided with multiple groups, which are respectively installed on the two sides of combination frame 2, fixed support 19 is provided with a threaded hole, one side of fixed support 19 is provided with gasket 21, the central part of gasket 21 is provided with an opening matched with the threaded hole, the outer wall of combination frame 2 is symmetrically provided with a plurality of groups of mounting frames 4 on the two sides, one side of mounting frame 4 is provided with speed regulating motor 3 through bolt fixing, one end of speed regulating motor 3 is connected with transmission shaft 22, one end of transmission shaft 22 is rotatably penetrated through mounting frame 4 and is provided, one end of transmission shaft 22 is provided with crushing roller 5, one end of drill pipe 1 is provided with adjusting assembly for bending angle adjustment, one side of combination frame 2 is provided with lubricating assembly for reducing resistance;

[0026] In use, combination frame 2 can be installed on drill pipe 1 at a selectable position, and combination of the left and right two groups of combination frames 2 on drill pipe 1 can form a whole, the fixed supports 19 respectively arranged on the left and right two groups of combination frames 2 are aligned after combination, and the alignment is completed by installing bolts at the threaded holes and tightening nuts to fix, so as to avoid the combination frame 2 from sliding off drill pipe 1, the gasket 21 made of rubber can play a reinforcing role when the nuts are tightened, so as to avoid shaking after fixing, the combination frame 2 moves in the well together with drill pipe 1, the transmission shaft 22 and the crushing roller 5 can be controlled to rotate through the speed regulating motor 3, when the combination frame 2 moves in the well together with drill pipe 1, the crushing roller 5 contacts the well wall, the protruding stone can be crushed by controlling the crushing roller 5 to contact the well wall and rotate, so as to complete the leveling in the well wall, avoid the protruding stone in the well wall from affecting the movement of drill pipe 1 and reducing the drilling efficiency, and avoid the drill pipe 1 from being damaged by the impact of the stone and reducing the service life;

[0027] The adjusting assembly comprises upper sleeve 11, the bottom end of upper sleeve 11 is provided with support frame 12, one side of support frame 12 is provided with adjusting motor 13 through bolt fixing, one end of adjusting motor 13 is connected with connecting shaft 24, one end of connecting shaft 24 is rotatably penetrated through support frame 12 and is provided, one end of connecting shaft 24 is provided with adjusting frame 14, the bottom end of adjusting frame 14 is provided with lower sleeve 15, and lower sleeve 15 is fixed to the end of drill pipe 1;

[0028] In use, the adjusting assembly can be installed between the two groups of drill pipes 1 through lower sleeve 15 and upper sleeve 11, so as to complete the connection of the multiple groups of drill pipes 1, after the connection is completed, when the angle needs to be adjusted for inclination during drilling, the adjusting frame 14 and the lower sleeve 15 can be controlled to rotate synchronously by controlling the connecting shaft 24 to rotate through the adjusting motor 13, so as to adjust the angle of the drill pipe 1 fixed to the lower sleeve 15, and the angle adjustment can be conveniently completed according to the needs of bending;

[0029] The lubrication assembly includes a liquid storage tank 18, and multiple sets of liquid storage tanks 18 are provided, which are respectively fixed to the top of the assembly frame 2 by bolts. A liquid filling pipe 17 is connected to the top of the liquid storage tank 18, a delivery pump 10 is connected to one side of the liquid storage tank 18, and a nozzle is connected to one side of the delivery pump 10.

[0030] During use, water can be added to the storage tank 18 by connecting the water supply pipe through the liquid filling pipe 17. During drilling, the water in the storage tank 18 is transported by the delivery pump 10 and injected into the well through the nozzle, thereby lubricating the well wall and effectively reducing resistance and friction.

[0031] To further reduce drag and friction, such as Figure 1 , 2 As shown in Figure 3, the outer wall of the combined frame 2 is fixed with a connecting frame 9 by bolts. Multiple sets of connecting frames 9 are provided and are symmetrically installed on both sides of the outer wall of the combined frame 2. A fixed shaft 6 is installed through the connecting frame 9, and a rotating wheel 7 is rotatably installed at one end of the fixed shaft 6.

[0032] When in use, the assembly frame 2 moves together with the drill pipe 1 inside the well. The rotating wheel 7 can effectively reduce friction with the well wall by contacting the well wall. By reducing friction, resistance can be effectively reduced, thereby increasing drilling efficiency.

[0033] To prevent the assembly of the second frame from breaking apart, such as Figure 1 , 2 As shown in Figure 3, a fixing groove 23 is provided on one side of the fixing bracket 19, and a U-shaped fixing pin 20 is provided on one side of the fixing groove 23.

[0034] When in use, after two adjacent sets of fixed brackets 19 are combined and fixed, the two ends of the U-shaped fixing pins 20 are respectively inserted into the fixing slots 23 of the two sets of fixed brackets 19, thereby completing the limiting and fixing of the fixed brackets 19, which can effectively prevent the combined brackets 2 from accidentally disconnecting after combination.

[0035] For easy connection to the water supply, such as Figure 1 , 3 As shown, a connecting flange 16 is installed at the end of the liquid adding pipe 17. A groove is provided on the top of the connecting flange 16, and a gasket is installed through the groove.

[0036] During use, the connection flange 16 can be used to reinforce the connection when the water supply pipe is connected to the liquid filling pipe 17, so as to prevent the connection from being accidentally broken. The gap at the connection can be filled by a rubber gasket.

[0037] Example 2

[0038] To protect rotor 7, refer to... Figure 1 , 2The application discloses a drag-reducing and friction-reducing device for compact oil shale oil exploitation drilling, and the device is improved compared with the embodiment 1; the outer wall of the rotating wheel 7 is provided with a protective sleeve 8, and the protective sleeve 8 is made of rubber material.

[0039] In use, the rubber material protective sleeve 8 wrapped on the outer wall of the rotating wheel 7 can play a buffering protection role, effectively avoids the rotating wheel 7 from being damaged due to impact when contacting the well wall, and can effectively prolong the service life.

[0040] The above is only the preferred specific implementation of the application, and the part of the circuit control, signal control transmission and the like without the creative labor can refer to the prior art, but the protection scope of the application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the application concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A drag-reducing and friction-reducing device for compact oil shale oil production drilling, comprising a leveling assembly, characterized in that, The leveling assembly includes a drill rod (1), one end of the drill rod (1) is provided with a combined frame (2), the combined frame (2) is designed in a split type, the outer wall of the combined frame (2) is provided with a plurality of fixed supports (19), the fixed supports (19) are provided with a plurality of groups and are respectively installed on both sides of the combined frame (2), the fixed supports (19) are provided with screw holes, one side of the fixed supports (19) is provided with a gasket (21), the gasket (21) is provided with an opening in the center and matched with the screw hole, a plurality of groups of mounting frames (4) are symmetrically installed on the outer walls of both sides of the combined frame (2), a speed regulating motor (3) is installed on one side of the outer wall of the mounting frame (4), one end of the speed regulating motor (3) is connected with a transmission shaft (22), one end of the transmission shaft (22) is rotatably penetrated through the mounting frame (4) and is arranged, a crushing roller (5) is installed on one end of the transmission shaft (22), one end of the drill rod (1) is provided with an adjusting assembly for bending and adjusting the angle, one side of the combined frame (2) is provided with a lubricating assembly for reducing resistance.

2. The drag and friction reducing device for drilling tight oil shale oil recovery wells according to claim 1, characterized in that, The adjusting assembly includes an upper sleeve (11), the bottom end of the upper sleeve (11) is installed with a support frame (12), one side of the outer wall of the support frame (12) is provided with an adjusting motor (13), one end of the adjusting motor (13) is connected with a connecting shaft (24), one end of the connecting shaft (24) is rotatably penetrated through the support frame (12) and is arranged, one end of the connecting shaft (24) is installed with an adjusting frame (14), the bottom end of the adjusting frame (14) is installed with a lower sleeve (15), and the lower sleeve (15) is fixed to the end of the drill rod (1).

3. The drag and friction reducing device for drilling tight oil shale oil recovery wells of claim 1, wherein, The lubricating assembly includes a liquid storage tank (18), a plurality of groups of the liquid storage tank (18) are arranged and are respectively fixed to the top of the combined frame (2), the top of the liquid storage tank (18) is connected with a liquid adding pipe (17), one side of the liquid storage tank (18) is connected with a conveying pump (10), and one side of the conveying pump (10) is connected with a spray head.

4. The drag and friction reducing device for drilling tight oil shale oil recovery wells of claim 1, wherein, The outer wall of the combined frame (2) is provided with a connecting frame (9) and is fixed by bolts, a plurality of groups of the connecting frame (9) are arranged and are respectively symmetrically installed on the outer walls of both sides of the combined frame (2), a fixed shaft (6) is installed through the connecting frame (9), and one end of the fixed shaft (6) is rotatably installed with a rotating wheel (7).

5. The drag and friction reducing device for drilling tight oil shale oil recovery wells of claim 1, wherein, One side of the fixed support (19) is provided with a fixed groove (23), and the fixed groove (23) is provided with a U-shaped fixed pin (20) on one side.

6. A drag reducing and friction reducing device for compact oil shale oil extraction drilling as claimed in claim 3 wherein, A connecting flange (16) is installed at the end of the liquid adding pipe (17), the top of the connecting flange (16) is provided with a groove, and a gasket is installed through the groove.

7. The drag and friction reducing device for drilling tight oil shale oil recovery wells of claim 4, wherein, The outer wall of the rotating wheel (7) is provided with a protective sleeve (8), and the protective sleeve (8) is made of rubber material.

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