WO2022021720A1

WO2022021720A1 - Injection guide device of continuous guide pipe and continuous guide pipe operation apparatus

Info

Publication number: WO2022021720A1
Application number: PCT/CN2020/133847
Authority: WO
Inventors: 谢和平; 高明忠; 陈领; 赵乐; 杨明庆; 余波; 李佳南; 李聪; 何志强; 胡云起
Original assignee: 深圳大学
Priority date: 2020-07-28
Filing date: 2020-12-04
Publication date: 2022-02-03
Also published as: CN111997541A

Abstract

An injection guide device (2) of a continuous guide pipe and a continuous guide pipe operation apparatus, belonging to the technical field of underground exploration. The injection guide device comprises a continuous guide pipe injection head (21) and a guide arch (22), wherein the positions of the continuous guide pipe injection head (21) and the guide arch (22) are exchanged; and the guide arch (22) is used for guiding a continuous guide pipe (9) into a well. When the device is used for injection, the continuous guide pipe (9) sent out by the continuous guide pipe injection head (21) is guided into the well by means of the guide arch (22), such that the continuous guide pipe injection head (21) does not need to be vertically arranged, and the height of the apparatus can be effectively reduced, which is particularly suitable for an operation environment with a limited space and height.

Description

Coiled catheter injection guide device and continuous catheter operation equipment

technical field

The invention relates to the technical field of underground exploration, in particular to an injection guide device of a continuous conduit and a continuous conduit operation equipment.

Background technique

As shown in FIG. 1 , the existing coiled tubing operation equipment generally includes a guide gooseneck (No. 100 ) and an injection head (No. 200 ), and the guide gooseneck is used to guide the coiled tubing into the injection head. The main functions of the injection head are:

(1) Apply axial force to the coiled tubing to overcome the self-weight of the coiled tubing and the buoyancy and friction in the wellbore, and provide sufficient push and pull forces to control the coiled tubing exiting and entering the well;

(2) Bearing the hanging weight of the entire coiled tubing when the coiled tubing is stationary;

(3) Provide enough clamping force to prevent relative sliding between the coiled tube and the clamping block;

(4) Under different circumstances, control the lifting and lowering speed of the coiled tube;

(5) Provide a working platform for finger load sensors and encoders;

(6) Bear the self-weight and additional load of all coiled pipes.

The inlet of the existing coiled tubing injection head is located directly above the outlet. The injection head itself has a certain height, and the height of the guide gooseneck leads to a high height of the whole equipment, which is not suitable for the working environment with limited space height ( For example, coal mine roadway, generally no more than 3m in height).

SUMMARY OF THE INVENTION

The present invention provides an injection guide device for a continuous catheter in order to solve the above-mentioned technical problems.

The present invention is achieved through the following technical solutions:

The injection guide device of the continuous catheter, including the continuous catheter injection head and the guide arch, the inlet and the outlet of the continuous catheter injection head are in a straight line, the position of the continuous catheter injection head and the guide arch are exchanged, so that the guide arch is used to guide the continuous catheter into the well .

Preferably, the continuous catheter injector head is positioned horizontally.

Further, the guide arch is arc-shaped.

Further preferably, the guide arch is in the shape of a quarter arc.

Further, one end of the guide arch is vertically downward.

Further, the other end of the guide arch is connected with the continuous catheter injection head.

Continuous catheter operation equipment, in addition to the above-mentioned injection guide device, it also includes a folded frame, the folded frame includes a base, a mounting frame movably connected with the base, and a mounting frame for enabling the mounting frame to surround the A telescopic mechanism rotating in a vertical plane at the movable connection point, one end of the telescopic mechanism is movably connected with the base, and the other end of the telescopic mechanism is movably connected with the mounting frame; the injection guide device is mounted on the mounting frame superior.

Further, the continuous conduit operation equipment further includes a drill rod driving device, the drill rod driving device is mounted on the mounting frame, and the drill rod driving device is located below the injection guide device.

Further, the bottom of the base is provided with a crawler traveling mechanism.

Further, the continuous conduit operation equipment further includes a reel device, a continuous conduit and a movable base, the reel device includes a reel, the reel is mounted on the reel frame, and the reel frame is provided with a pipe arranging device assembly. The tube assembly is used to control the sequence of the continuous conduit reel, the reel being driven by the reel motor; the reel stand is mounted on the moving base.

Compared with the prior art, the present invention has the following beneficial effects:

In the invention, the positions of the continuous conduit injection head and the guide arch are exchanged; during injection, the continuous conduit sent by the continuous conduit injection head is guided into the well through the guide arch, so that the continuous conduit injection head does not need to be vertically arranged, which can effectively reduce the height of the equipment; the invention Especially suitable for working environment with limited space height.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the embodiments of the present invention, and constitute a part of the present application, and do not constitute limitations to the embodiments of the present invention.

Fig. 1 is the structural representation of prior art;

Fig. 2 is the structural representation of the injection guide device in the present invention;

Fig. 3 is the structural representation of the continuous conduit operation equipment in the present invention;

Fig. 4 is the schematic diagram of No. 1 working trolley when the foldable frame is folded up;

5 is a schematic view of a reel device;

Figure 6 is a side view of the reel device;

7 is a schematic diagram of an injection guide device and a straightening device;

Fig. 8 is the structural representation of the straightening device;

FIG. 9 is a schematic diagram of coring using the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. as a limitation of the present invention.

As shown in FIG. 2, the continuous catheter injection guide device 2 disclosed in the present invention includes a continuous catheter injection head 21 and a guide arch 22. The inlet and outlet of the continuous catheter injection head 21 are in a straight line, and the continuous catheter injection head 21 can give Coiled conduit provides the power for running and tripping. In the present invention, the positions of the continuous catheter injection head 21 and the guide arch 22 are exchanged, so that the guide arch 22 is used to guide the continuous catheter into the well. Wherein, the guide arch 22 is arc-shaped.

After the positions of the continuous catheter injection head 21 and the guide arch 22 are exchanged, the continuous catheter is guided into the well by the guide arch 22, so the continuous catheter injection head 21 does not need to be installed vertically, thereby reducing the overall height of the device.

In this embodiment, the continuous catheter injection head 21 is arranged horizontally, the guide arch 22 is a quarter arc shape, one end of the guide arch 22 is connected to the continuous catheter injection head 21, and the other end of the guide arch 22 faces vertically downward. This arrangement can minimize the overall height of the continuous catheter injection head 21 and the guide arch 22 .

As shown in FIG. 1 , during use and injection, the continuous catheter 9 sent by the continuous catheter injection head 21 is guided into the well through the guide arch 22 .

In the present invention, the positions of the continuous conduit injection head 21 and the guide arch 22 are exchanged, so that the continuous conduit injection head 21 does not need to be vertically arranged, which can effectively reduce the height of the equipment; it is especially suitable for working environments with limited space height, such as working in coal mine roadways .

As shown in FIGS. 3 and 4 , the present invention also discloses a continuous conduit operation equipment, including a No. 1 working trolley 12 , a No. 2 working trolley 13 and a continuous conduit 9 .

The No. 1 working trolley 12 includes a No. 1 crawler traveling mechanism 1202 , a foldable frame, a drill pipe driving device 1204 and an injection guide device 2 for pulling the continuous conduit downhole or tripping out.

The foldable rack includes No. 1 base 1201, a mounting frame 1203 movably connected with No. 1 base 1201, and a telescopic mechanism 1205 for rotating the mounting frame 1203 around the movable connection in a vertical plane. The No. 1 base 1201 is movably connected, and the other end of the telescopic mechanism 1205 is movably connected with the mounting frame 1203 .

Approaches to Active Connections There are various approaches in the art. In this embodiment, the bottom of the mounting bracket 1203 is hinged with the No. 1 base 1201 , and through the extension or retraction of the telescopic mechanism 1205 , the mounting bracket 1203 can be rotated clockwise or counterclockwise around the hinge 1206 .

The No. 1 crawler traveling mechanism 1202 is arranged at the bottom of the No. 1 base 1201 . The injection guide device 2 and the drill rod driving device 1204 are mounted on the mounting frame 1203 . The drill rod drive 1204 is located below the injection guide 2 .

The No. 2 work trolley 13 includes a reel device 1 and a mobile base 1301 . The mobile base 1301 includes a No. 2 base 1303 and a No. 2 crawler traveling mechanism 1302 .

As shown in FIGS. 3 , 4 , 5 and 6 , the reel device 1 is mounted on the No. 2 base 1303 for accommodating the continuous conduit 9 . The reel device 1 includes a reel 1101 and a reel holder 1102. The reel holder 1102 is installed and fixed on the No. 2 base 1303, the reel 1101 is arranged on the reel holder 1102, and the reel holder 1102 is provided with a pipe arrangement assembly .

The pipe-arranging device assembly includes a pipe-arranging bracket 1104 and a torque limiter. The pipe-arranging bracket 1104 is rotatably connected to the reel frame 1102. A lifting hydraulic rod 1105 is arranged between the pipe-arranging bracket 1104 and the reel frame 1102. There is a bidirectional screw 1106, and a guide device 1107 is provided on the bidirectional screw 1106. The guide device 1107 is provided with a mechanical counter and a rotating system, which includes a plurality of transfer wheels 1109 . A lift cylinder 1108 is provided between the guide device 1107 and the bidirectional screw 1106 . When the continuous conduit 9 is being transferred, the guide device 1107 moves back and forth along the bidirectional screw 1106 , so that the continuous conduit 9 is neatly stored on the reel 1101 .

The guide arch 22 is arc-shaped. When the catheter is injected, the continuous catheter 9 undergoes plastic bending deformation at the guide arch 22, so the continuous catheter 9 coming out of the guide arch 22 has residual bending. Eccentric wear occurs with the borehole wall, thereby increasing downhole wear.

Therefore, as shown in Figure 7, a straightening device 8 can be added to straighten the continuous conduit 9, which can eliminate the residual bending of the continuous conduit 9 to the greatest extent, which is beneficial to ensure that the continuous conduit 9 enters the well vertically, and can effectively reduce downhole wear. The guide arch 22 is provided between the continuous catheter injection head 21 and the straightening device 8 .

As shown in FIG. 8, the straightening device 8 includes a bracket 80, a first roller 82, a second roller 83, a crank arm 84 and a pressing oil cylinder 85; the first roller 82 is installed on the bracket 80, and the first roller 82 has at least two One, the first rollers 82 are arranged in a linear direction. One end of the crank arm 84 is movably connected with the bracket 80, the second roller 83 is rotatably installed at the inflection point of the crank arm 84, and the output end of the pressing oil cylinder 85 is connected with the other end of the crank arm 84 so that the second roller 83 can be pressed against the continuous conduit 9, so that a straightening channel is formed between the first roller 82 and the second roller 83.

In the continuous conduit operation equipment of the present invention, the injection guide device 2 is installed on the foldable frame, and the wellhead can be exposed after being folded, so as to facilitate the installation of the wellhead equipment. It changes the position of the continuous conduit injection head 21 and the guide arch 22, so that the continuous conduit injection head 21 does not need to be vertically arranged, which can effectively reduce the overall height of the equipment; it is especially suitable for working environments with limited space height, such as working in coal mine roadways .

my country is not only a big coal producing country, but also a big coal consuming country. Coal is an important basic energy and raw material in our country. Coal seam gas content and coal seam gas pressure are the main indicators for outburst risk area prediction and regional effect inspection. Coal seam gas content is usually measured by surface coalbed methane content measurement, geological exploration gas content measurement, and underground coal seam drilling cores. Determination. Existing core extractors usually consist of an inner tube assembly and an outer tube assembly.

The method for coring using the device of the present invention is introduced below, including the following steps:

S1. As shown in Fig. 9, move the No. 1 working trolley 12 to the coring location, and move the No. 2 working trolley 13 to the back of the No. 1 working trolley 12, as shown in Fig. 4, at this time the No. 1 working trolley 12 The foldable rack is folded up for easy installation of wellhead equipment;

S2. Connect the outer pipe assembly of the drill pipe 4 and the coring device 3, and gradually lower the outer pipe assembly from the ground to the coring position;

S3. After the inner tube assembly of the core taker 3 is assembled on the ground; the continuous conduit 9 extends from the reel device 1 through the pipe arrangement assembly into the guide injection mechanism 2; The center rod connection of the tube assembly;

S4. Continuously lower the continuous catheter 9 through the continuous catheter operation device, thereby lowering the inner pipe assembly in the drill pipe 4;

S5. Start the ground drilling rig, rotate the drill pipe driving device 1204 and pressurize the drilling. At this time, the inner pipe assembly and the outer pipe assembly cooperate to drill down and start the core-taking operation;

S6. During the coring operation, the continuous conduit operation device stops lowering the continuous conduit 9, keeps the position of the continuous conduit 9 in the drill pipe 4 unchanged, and the central component remains stationary. With the downward movement of the inner tube assembly and the outer tube assembly , the core enters the tube;

S7. After the core removal is completed, start the reel device 1 and the guide injection mechanism 2, lift the continuous conduit 9, and lift out the inner tube assembly;

S8. After the inner pipe assembly is lifted out of the drill pipe 4 through the continuous conduit 9, the quick joint at the end of the continuous conduit 9 is disassembled, and the inner pipe assembly is removed.

The continuous conduit of the present invention is used to lift and lower the pressure-maintaining coring device, which plays the role of a "rope" in the traditional cord coring; Sensors or related measurement and control devices are installed on the device to realize real-time measurement of target parameters required at the bottom of the hole.

The above specific embodiments further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Within the spirit and principle of the present invention, any modifications, equivalent replacements, improvements, etc. made should be included within the protection scope of the present invention.

Claims

An injection guide device for a continuous catheter, comprising a continuous catheter injection head and a guide arch, the inlet and the outlet of the continuous catheter injection head are in a straight line, and it is characterized in that: the position of the continuous catheter injection head and the guide arch are exchanged, so that the guide arch is used for guiding A continuous conduit goes into the well.
The injection guiding device of the continuous catheter according to claim 1, wherein the injection head of the continuous catheter is arranged horizontally.
The injection guide device for a continuous conduit according to claim 1 or 2, wherein the guide arch is arc-shaped.
The injection guide device for a continuous conduit according to claim 3, wherein the guide arch is in the shape of a quarter arc.
The injection guide device for a continuous catheter according to claim 1, 2 or 4, wherein one end of the guide arch is vertically downward.
The injection guide device of the continuous catheter according to claim 5, wherein the other end of the guide arch is connected to the injection head of the continuous catheter.
The continuous conduit operation equipment including the injection guide device according to any one of claims 1-6, is characterized in that: it also includes a foldable frame, and the folded frame includes a base, and a movably connected to the base. a mounting frame, and a telescopic mechanism for rotating the mounting frame in a vertical plane around the movable connection;

One end of the telescopic mechanism is movably connected with the base, and the other end of the telescopic mechanism is movably connected with the mounting frame; the injection guide device is mounted on the mounting frame.
The continuous conduit operation equipment according to claim 7 is characterized in that: it further comprises a drill rod driving device, the drill rod driving device is mounted on the mounting frame, and the drill rod driving device is located below the injection guide device.
The continuous conduit operation equipment according to claim 7, wherein the bottom of the base is provided with a crawler traveling mechanism.
The continuous conduit operation equipment according to claim 7 is characterized in that: it further comprises a reel device, a continuous conduit and a movable base, the reel device comprises a reel, the reel is installed on the reel frame, and the reel frame is provided with There is a pipe arrangement assembly, which is used to control the sequence of the continuous conduit reel, and the reel is driven by a reel motor; the reel frame is mounted on the moving base.