CN111577135B

CN111577135B - Radial drilling orientation device

Info

Publication number: CN111577135B
Application number: CN202010489002.7A
Authority: CN
Inventors: 王冰; 宋子军; 舒树强; 宫维; 张斌; 刘慧锋; 刘林
Original assignee: Jiangsu Xinyuan Mining Co ltd
Current assignee: Jiangsu Xinyuan Mining Co ltd; China Petrochemical Corp; Sinopec Jiangsu Petroleum Exploration Bureau
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2022-03-29
Anticipated expiration: 2040-06-02
Also published as: CN111577135A

Abstract

The invention discloses a radial drilling directional device, which comprises an anchoring mechanism which is arranged in a sleeve in a vertically movable manner, wherein the anchoring mechanism is arranged at the bottom of a radial drilling assembly, the radial drilling assembly comprises a barrel, an L-shaped sleeve is arranged in the barrel and comprises a vertical part and a horizontal part, a jet drilling tool is arranged in the L-shaped sleeve and comprises a hose connected to a drill bit, the drill bit is arranged in the horizontal part, a locking sleeve is sleeved on the periphery of the hose and consists of a plurality of locking cylinders for protecting the hose, the locking sleeves are mutually nested and hinged, the hose is protected by using the locking cylinders which are mutually nested, and the rigid connection characteristic of the locking cylinders is utilized, so that the effects of reinforcing the high-pressure hose and enhancing the stability of the drilling track direction are realized.

Description

Radial drilling orientation device

Technical Field

The invention relates to a drilling device, in particular to a radial drilling directional device.

Background

In the process of drilling and developing oil and gas fields and mines, radial drilling technology application is actively developed at home and abroad at present in order to increase the yield of low-permeability oil and gas wells, old oil wells and heavy oil wells and control reserves. Namely, the ultrashort curvature radius is used for drilling from the vertical direction of the casing to the horizontal direction, and the horizontal well enters a target reservoir, so that the recovery rate and the exploitation speed of the oil well can be greatly improved. At present, a radial drilling tool mechanism generally adopts a combination of a high-pressure hose and a high-speed jet drilling tool, and the self-propelled high-speed jet drilling tool is used for towing the high-pressure hose to drill, so that the defects of poor rigidity and low orientation precision of the high-pressure hose exist.

Disclosure of Invention

The invention aims to provide a radial drilling directional device, which can realize the functions of reinforcing a high-pressure hose and enhancing the stability of the drilling track direction by the rigid connection characteristic of a locking cylinder.

The purpose of the invention is realized as follows: the utility model provides a radial drilling orienting device, includes the anchor mechanism that can set up in the sleeve with reciprocating, anchor mechanism installs the bottom at radial drilling subassembly, radial drilling subassembly includes the barrel, is provided with L shape sleeve in the barrel, L shape sleeve includes vertical portion and horizontal part, be provided with the jet drilling tool in the L shape sleeve, the jet drilling tool is including connecting the hose on the drill bit, and the drill bit setting is in the horizontal part, the periphery cover of hose is equipped with the kayser sleeve pipe, the kayser sleeve pipe is nested articulated each other by the kayser section of thick bamboo of a plurality of protection hose and is constituteed.

Compared with the prior art, the invention has the beneficial effects that: the hose is protected by the mutually nested locking cylinders, and the rigid connection characteristic of the locking cylinders is utilized, so that the functions of reinforcing the high-pressure hose and enhancing the stability of the drilling track direction are realized. The invention can be used in oil and gas development.

As a further limitation of the present invention, a notch is formed in the inner side of the L-shaped sleeve, a gear surface is disposed on one side of the lock cylinder facing the notch, and a driving mechanism matched with the gear surface is disposed in the cylinder. The locking sleeve can move more conveniently in the L-shaped sleeve by the design of the notch and the matching of the driving mechanism and the gear surface, and the compact space in the sleeve is fully utilized.

As a further limitation of the invention, the latch cylinders remain coaxial and non-rotatable with respect to each other when in the vertical or horizontal portions of the L-shaped sleeve, and relative rotation occurs at the corners of the L-shaped sleeve. Through the design, the invention can keep better direction stability in the straight line section and has better flexibility in turning.

As a further limitation of the invention, the locking cylinder comprises a pair of clamping plates arranged at the top of the square cylinder, a clamping groove is formed in each clamping plate, a pair of clamping spring pieces are arranged on two sides of the square cylinder corresponding to the clamping plates, when two adjacent locking cylinders are nested, the clamping spring piece on the previous locking cylinder is clamped in the clamping groove of the next locking cylinder, and when the clamping spring pieces are clamped in the clamping grooves, the two adjacent locking cylinders are coaxial and cannot rotate relatively, and when the clamping spring pieces are separated from the clamping grooves, the two adjacent locking cylinders can rotate relatively. The design realizes the stability of the direction on the straight line segment, and the locking and unlocking of two adjacent lock cylinders can be easily realized by the matching of the lock reed and the clamping groove.

As a further limitation of the present invention, the clamping groove is an obliquely arranged clamping groove, the clamping spring piece is also obliquely arranged, the bottom end of the clamping spring piece is fixed at the side portion of the square tube, the clamping spring piece is clamped in the clamping groove under the elastic action of the clamping spring piece, and the clamping spring piece is separated from the clamping groove when the clamping spring piece moves towards the center of the square tube under the force. The inclined design of the clamping groove and the clamping spring plate is more beneficial to the clamping spring plate to be separated from the clamping groove in the movement process of the clamping cylinder.

As a further limitation of the invention, the top end of the clip spring piece extends out of the square cylinder, a section of boss matched with the top end of the clip spring piece is processed on the notches of the vertical part and the horizontal part, the boss is arranged at the front and back positions of the corner of the L-shaped sleeve, and the clip spring piece shrinks towards the center of the square cylinder when sliding into the boss in the movement process, so that the clip spring piece is separated from the clip groove. Through set up the boss on the notch, can realize a kayser section of thick bamboo unblock before getting into the corner, kayser once more after going out the corner.

As a further limitation of the invention, the locking cylinder is provided with a first hinge part and a second hinge part, the first hinge part is arranged on one side of the joint of the locking plate and the square cylinder close to the notch, the second hinge part is arranged on one side of the bottom of the square cylinder close to the notch, and when two adjacent locking cylinders are hinged, the second hinge part on the upper locking cylinder is hinged with the first hinge part of the lower locking cylinder. This design makes the latch section of thick bamboo more steady when the corner passes through.

As a further limitation of the invention, the top of the clamping plate and the side far away from the notch are processed into arc-shaped surfaces. The design of the arc-shaped surface further ensures the stability of the locking cylinder during corner transition.

As a further limitation of the present invention, a corner of the L-shaped sleeve is in an arc structure, an inner arc of the corner is provided with a first guide wheel, an outer arc of the corner is provided with a plurality of second guide wheels, and the second guide wheels are distributed in an arc shape.

As a further limitation of the present invention, the clip spring piece includes a connecting portion, a clip portion and an operating portion, the connecting portion is fixedly connected to two sides of the square tube, the clip portion is configured to be inserted into the clip groove, and the operating portion is configured to control the clip portion to be inserted into and separated from the clip groove. The design makes the matching between the clamping spring plate and the clamping groove more flexible.

Drawings

Fig. 1 is a front view of the internal structure of the present invention.

Fig. 2 is a side view of the internal structure of the present invention.

FIG. 3 is a front view of the latch barrel of the present invention.

FIG. 4 is a side view of the latch barrel of the present invention.

FIG. 5 is a schematic view of the structure of the clip spring of the present invention.

The device comprises a casing pipe 1, a cylinder 2, a 3L-shaped sleeve, a 31 vertical part, a 32 horizontal part, a 33 notch, 331 and 332 bosses, a 4 gyroscope, a 5 drill bit, a 6 hose, a 7 clamping cylinder, a 71 square cylinder, a 72 clamping plate, a 721 clamping groove, a 73 clamping spring piece, a 731 connecting part, a 732 clamping part, an 733 operating part, a 74 gear surface, a 75 first hinging part, a 76 second hinging part, an 8 anchoring mechanism, a 9 driving mechanism, a 10 first guide wheel, an 11 second guide wheel, a 12 coupling and a 13 oil pipe.

Detailed Description

As shown in fig. 1-5, a radial drilling directional device comprises an anchoring mechanism 8 which is arranged in a sleeve 1 in a way of moving up and down, the anchoring mechanism 8 is arranged at the bottom of a radial drilling assembly, the radial drilling assembly comprises a barrel 2, an L-shaped sleeve 3 and a gyroscope 4 are arranged in the barrel 2, the L-shaped sleeve 3 comprises a vertical part 31 and a horizontal part 32, a jet drilling tool is arranged in the L-shaped sleeve 3, the jet drilling tool comprises a hose 6 connected to a drill bit 5, the drill bit 5 is arranged in the horizontal part 32, a locking sleeve 1 is sleeved on the periphery of the hose 6, the locking sleeve 1 is formed by mutually nesting and hinging a plurality of locking cylinders 7 for protecting the hose 6, a notch 33 is arranged on the inner side of the L-shaped sleeve 3, a gear surface 74 (optionally a rack) is arranged on one side of the locking cylinder 7 facing the notch 33, a driving mechanism 9 matched with the gear surface 74 is arranged in the barrel 2, in this embodiment, the driving mechanism 9 may be driven by a gear, a corner of the L-shaped sleeve 3 is in an arc structure, an inner arc of the corner is provided with a first guide wheel 10, and an outer arc of the corner is provided with a plurality of second guide wheels 11 distributed in an arc shape.

The locking cylinder 7 comprises a pair of locking plates 72 arranged at the top of the square cylinder 71, a locking groove 721 is formed in each locking plate 72, a pair of locking spring pieces 73 is arranged on two sides of each square cylinder 71 corresponding to the locking plates 72, when two adjacent locking cylinders 7 are nested, each locking spring piece 73 on the previous locking cylinder 7 is clamped in each locking groove 721 of the next locking cylinder 7, each locking spring piece 73 is clamped in each locking groove 721, the two adjacent locking cylinders 7 are coaxial and cannot rotate relatively, each locking spring piece 73 is separated from each locking groove 721, the two adjacent locking cylinders 7 can rotate relatively, each locking groove 721 is an obliquely arranged locking groove 721, each locking spring piece 73 is obliquely arranged, the bottom end of each locking spring piece 73 is fixed on the side of each square cylinder 71, each locking spring piece 73 is clamped in each locking groove 721 under the elastic action of each locking spring piece 73, each locking spring piece 73 is separated from each locking groove 721 when being stressed to move towards the center of each square cylinder 71, the top end of each locking spring piece 73 extends out of each square cylinder 71, a boss 331 matched with the top end of each locking spring pieces 331 is machined on each notch 33 of each vertical part 31, each

horizontal part

32, 332, the

bosses

331 and 332 are arranged at the front and back positions of the corner of the L-shaped sleeve 3, and the clip spring plate 73 shrinks towards the center of the square tube 71 when the top end slides into the

bosses

331 and 332 in the moving process, so that the clip spring plate 73 is separated from the clamping groove 721; the locking cylinder 7 is provided with a first hinge portion 75 and a second hinge portion 75 (in this embodiment, a pin connection is used), the first hinge portion 75 is disposed on one side of the joint of the locking plate 72 and the square cylinder 71, which is close to the notch 33, the second hinge portion 75 is disposed on one side of the bottom of the square cylinder 71, which is close to the notch 33, when two adjacent locking cylinders 7 are hinged, the second hinge portion 75 on the previous locking cylinder 7 is hinged to the first hinge portion 75 of the next locking cylinder 7, the top of the locking plate 72 and one side far from the notch 33 are processed into an arc-shaped surface, the locking spring plate 73 includes a connecting portion 731, a locking portion 732 and an operating portion 733, the connecting portion 731 is fixedly connected to two sides of the square cylinder 71, the locking portion 732 is configured to be inserted into the locking slot 721, and the operating portion 733 is configured to control the locking portion 732 to be inserted into and separated from the locking slot 721.

The working principle of the embodiment is as follows:

connecting a high-speed jet drilling tool to the end parts of a high-pressure hose 6 and a locking cylinder 7, and placing the high-speed jet drilling tool in the cylinder body 2; is connected to the bottom of an oil pipe 13 through a coupling 12 and is lowered into the casing 1 through the transmission mode of the oil pipe 13; after reaching the target well depth, rotating the oil pipe 13 to adjust the azimuth angle of the jet flow drilling tool according to the data of the gyroscope 4; the oil pipe 13 is pressed by a high-pressure pump of a ground cement truck, and the anchoring mechanism 8 fixes the oil pipe 13 to prevent the oil pipe 13 from generating displacement during drilling; the oil pipe 13 and the high-pressure hose 6 are pressed by a ground high-pressure pump, and the drilling fluid drives the jet drilling tool to rotate; the gear mechanism is driven by the driving motor to push the locking cylinder 7 to move downwards, and the

bosses

331 and 332 on the notch 33 are used for jacking the clamping spring piece 73 on the locking cylinder 7, so that the clamping spring piece 73 is separated from the clamping groove 721, and the locking cylinder 7 is moved; the movement and the steering of the locking cylinder 7 in the L-shaped sleeve 3 are realized by utilizing a first guide wheel 10 and a second guide wheel 11, the purpose of radial drilling is achieved, and drilling debris returns to the ground through an annular space between the casing 1 and the oil pipe 13; after the radial drilling is finished, the locking cylinder 7 and the high-speed jet drilling tool are recovered to the cylinder body 2; multi-point radial drilling can also be implemented by adjusting the tubing 13 orientation or well depth.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.

Claims

1. A radial drilling directional device comprises an anchoring mechanism which is arranged in a sleeve in a vertically movable mode, and is characterized in that the anchoring mechanism is installed at the bottom of a radial drilling assembly, the radial drilling assembly comprises a barrel, an L-shaped sleeve is arranged in the barrel and comprises a vertical portion and a horizontal portion, a jet drilling tool is arranged in the L-shaped sleeve and comprises a hose connected to a drill bit, the drill bit is arranged in the horizontal portion, a clamping sleeve is sleeved on the periphery of the hose and comprises a plurality of clamping cylinders for protecting the hose, the clamping sleeves are formed by mutually nesting and hinging the clamping cylinders, each clamping cylinder comprises a pair of clamping plates arranged at the tops of square cylinders, clamping grooves are formed in the clamping plates, a pair of clamping spring pieces are arranged on two sides of each square cylinder corresponding to the clamping plates, and when two adjacent clamping cylinders are nested, the clamping spring pieces on the previous clamping cylinder are clamped in the clamping grooves of the next clamping cylinder, when the clamping spring pieces are clamped in the clamping grooves, the two adjacent clamping cylinders are coaxial and cannot rotate relatively, and when the clamping spring pieces are separated from the clamping grooves, the two adjacent clamping cylinders can rotate relatively.

2. The radial well drilling orientation device of claim 1, wherein the L-shaped sleeve is notched on an inner side thereof, the latch cylinder is provided with a gear surface on a side facing the notch, and the cylinder body is provided with a driving mechanism engaged with the gear surface.

3. A radial drill direction unit as claimed in claim 2, wherein the locking cylinders are co-axial and non-rotatable relative to each other when in the vertical or horizontal portions of the L-shaped sleeve and rotatable relative to each other when at the corners of the L-shaped sleeve.

4. The radial well drilling orientation device of claim 3, wherein the clamping groove is an inclined clamping groove, the clamping spring piece is also inclined, the bottom end of the clamping spring piece is fixed on the side part of the square barrel, the clamping spring piece is clamped in the clamping groove under the elastic action of the clamping spring piece, and the clamping spring piece is separated from the clamping groove when the clamping spring piece moves towards the center of the square barrel under the action of force.

5. The radial drilling orientation device of claim 4, wherein the top end of the clip spring extends out of the square tube, and the notches of the vertical part and the horizontal part are respectively provided with a boss matched with the top end of the clip spring, the bosses are arranged at the front and back positions of the corner of the L-shaped sleeve, and the clip spring shrinks towards the center of the square tube when the top end slides into the bosses in the movement process, so that the clip spring is separated from the clamping groove.

6. A radial drilling orientation device as claimed in claim 3, wherein the locking cylinder is provided with a first hinge portion and a second hinge portion, the first hinge portion is disposed on a side of the joint of the locking plate and the square cylinder near the notch, the second hinge portion is disposed on a side of the bottom of the square cylinder near the notch, and when two adjacent locking cylinders are hinged, the second hinge portion on the previous locking cylinder is hinged with the first hinge portion of the next locking cylinder.

7. A radial drilling orientation device as claimed in claim 3, wherein the top of the catch plate is curved away from the slot.

8. A radial drilling orientation device as claimed in any one of claims 1 to 7, wherein the L-shaped sleeve is configured to be arcuate at a corner, a first guide wheel is provided at an inner arc of the corner, and a plurality of second guide wheels are provided at an outer arc of the corner, the second guide wheels being arcuate.

9. The radial drilling orientation device of any one of claims 1-7, wherein the clip spring comprises a connecting portion, a clip portion and an operating portion, the connecting portion is fixedly connected to two sides of the square tube, the clip portion is configured to be inserted into the slot, and the operating portion is configured to control the insertion and separation of the clip portion into and from the slot.