CN219452051U

CN219452051U - Coiled tubing blowout prevention box

Info

Publication number: CN219452051U
Application number: CN202320402114.3U
Authority: CN
Inventors: 朱小林; 郭流洋
Original assignee: Shaanxi Wanlin Machinery Equipment Manufacturing Co ltd
Current assignee: Shaanxi Wanlin Machinery Equipment Manufacturing Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-08-01
Anticipated expiration: 2033-03-07

Abstract

The utility model discloses a blowout prevention box for a continuous oil pipe, which comprises two sections of continuous oil pipe bodies, a joint ring and a connecting pipe fixedly arranged on the outer side wall of the joint ring, wherein the two sections of continuous oil pipe bodies are symmetrically and fixedly arranged on two sides of the joint ring, the end part of the connecting pipe is fixedly provided with a blowout prevention original box, the joint ring, the connecting pipe and the blowout prevention original box are communicated, the top of the connecting pipe is provided with a sliding groove, the inner side wall of the sliding groove is connected with a sealing plate in a sliding manner, and the outer side wall of the connecting pipe is provided with a sealing device for sealing the connecting pipe by the sealing plate. According to the utility model, under the interaction of the continuous oil pipe body, the joint ring, the connecting pipe, the blowout prevention original box, the sliding groove, the sealing plate, the oil drain pipe and the sealing device, the sealing device is arranged on the connecting pipe, so that the servo motor in the sealing device drives the sealing plate to move up and down in the sliding groove, the flow to the blowout prevention original box is reduced, the pressure of a drilling fluid circulating system is reduced, and the failure rate is reduced.

Description

Coiled tubing blowout prevention box

Technical Field

The utility model relates to the technical field of blowout prevention boxes, in particular to a blowout prevention box for a continuous oil pipe.

Background

The coiled tubing is a tubing made of low-carbon alloy steel, has good flexibility, is also called a coiled tubing, has a length of a coil of coiled tubing of several kilometers, can replace a conventional tubing to perform a plurality of operations, and has the characteristics of pressurized operation and continuous lifting, and has the advantages of small volume, quick operation period and low cost.

At present, in the continuous oil pipe operation process, the traditional blowout prevention box can be installed at the joint to prevent drilling fluid from overflowing and polluting the drill floor, but in the use process of the traditional blowout prevention box, the traditional blowout prevention box can only be kept in a state of being always opened and can not be closed, when the pressure intensity in the continuous oil pipe is enhanced, a large amount of stock solution can be enabled to flow into the drilling fluid circulation system rapidly, the pressure of the circulation system is increased, and the failure rate is improved.

Disclosure of Invention

The utility model aims to solve the problem that the conventional blowout prevention box in the prior art cannot be closed in the using process, and when the pressure in a continuous oil pipe is enhanced, a large amount of stock solution enters a drilling fluid circulation system to increase the pressure of the circulation system.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a coiled tubing prevents spouting box, includes two sections coiled tubing body and connects circle and fixed the connecting pipe that sets up at the circle lateral wall that connects, two sections coiled tubing body symmetry is fixed to be set up in the both sides that connect the circle, connecting pipe tip is fixed to be provided with prevents spouting former box, connect circle, connecting pipe and prevent spouting former box intercommunication setting, the spout has been seted up at the connecting pipe top, spout inside wall sliding connection has the closing plate, be equipped with the sealing device who lets closing plate sealing connection pipe on the connecting pipe lateral wall, prevent spouting former box lateral wall intercommunication and be provided with oil drain pipe.

Preferably, the sealing device comprises an anti-overflow box fixedly connected to the outer side wall of the connecting pipe, a threaded rod is rotationally connected to the inner top of the anti-overflow box, a threaded hole is formed in the top of the sealing plate, the outer side wall of the threaded rod is in threaded connection with the inner side wall of the threaded hole, a fixed box is fixedly connected to the top of the anti-overflow box, a servo motor is fixedly connected to the inner top of the fixed box, and an output shaft of the servo motor is fixedly connected to the end part of the threaded rod.

Preferably, the sealing plate has a width and a length that are both greater than the inner diameter of the connecting tube.

Preferably, the top of the anti-overflow box is provided with a rotating hole, and the outer side wall of the threaded rod is rotationally connected with the inner side wall of the rotating hole.

Preferably, the outer side wall of the joint ring is provided with a pressure gauge.

The beneficial effects of the utility model are as follows:

under the interaction of the continuous oil pipe body, the joint ring, the connecting pipe, the blowout prevention original box, the sliding groove, the sealing plate, the oil discharge pipe and the sealing device, the sealing device is arranged on the connecting pipe, and the servo motor in the sealing device drives the sealing plate to move up and down in the sliding groove, so that the flow of the blowout prevention original box is reduced until the blowout prevention original box is closed, the pressure of a drilling fluid circulating system is reduced, and the failure rate is reduced.

Drawings

FIG. 1 is a schematic structural view of a blowout prevention box for a coiled tubing according to the present utility model;

fig. 2 is a side plan view of a chute in a coiled tubing blowout prevention box according to the present utility model.

In the figure: 1. a coiled tubing body; 2. a joint ring; 3. a connecting pipe; 4. blowout prevention original box; 5. a chute; 6. a sealing plate; 7. a pressure gauge; 8. an overflow prevention box; 9. a threaded rod; 10. a threaded hole; 11. a fixed box; 12. a servo motor; 13. and (5) discharging the oil pipe.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-2, a coiled tubing blowout prevention box comprises two sections of coiled tubing bodies 1, a joint ring 2 and a connecting pipe 3 fixedly arranged on the outer side wall of the joint ring 2, wherein the two sections of coiled tubing bodies 1 are symmetrically and fixedly arranged on two sides of the joint ring 2, the outer side wall of the joint ring 2 is provided with a pressure gauge 7, and the pressure gauge 7 can detect the pressure intensity in the coiled tubing bodies 1;

the end part of the connecting pipe 3 is fixedly provided with a blowout prevention original box 4, the blowout prevention original box 4 can temporarily store stock solution and buffer the pressure in the continuous oil pipe body 1, the joint ring 2, the connecting pipe 3 and the blowout prevention original box 4 are communicated, the top of the connecting pipe 3 is provided with a sliding groove 5, the inner side wall of the sliding groove 5 is slidably connected with a sealing plate 6, and the width and the length of the sealing plate 6 are both larger than the inner diameter of the connecting pipe 3;

the outer side wall of the connecting pipe 3 is provided with a sealing device for sealing the connecting pipe 3 by the sealing plate 6, the sealing device comprises an anti-overflow box 8 fixedly connected to the outer side wall of the connecting pipe 3, the top of the anti-overflow box 8 is rotationally connected with a threaded rod 9, the top of the anti-overflow box 8 is provided with a rotation hole, and the outer side wall of the threaded rod 9 is rotationally connected with the inner side wall of the rotation hole;

screw hole 10 has been seted up at closing plate 6 top, threaded rod 9 lateral wall and screw hole 10 inside wall threaded connection, and anti-overflow case 8 top fixedly connected with fixed box 11, the fixed box 11 internal top fixedly connected with servo motor 12, servo motor 12 output shaft and threaded rod 9 tip fixed connection, anti-blowout former box 4 lateral wall intercommunication is provided with oil drain pipe 13, oil drain pipe 13's end intercommunication drilling fluid circulation system.

Working principle: the two ends of the joint ring 2 are connected with the coiled tubing body 1, the pressure gauge 7 can detect the pressure intensity in the coiled tubing body 1 in the process of transporting stock solution by the coiled tubing body 1, and when the pressure gauge 7 is in the standard pressure intensity range, the connecting pipe 3 is in the sealed state of the sealing plate 6;

when the pressure gauge 7 detects that the pressure intensity in the continuous oil pipe body 1 exceeds the standard pressure intensity, a servo motor 12 is started, an output shaft of the servo motor 12 drives a threaded rod 9 to rotate, the threaded rod 9 drives a sealing plate 6 to ascend on the inner side wall of a sliding groove 5, and at the moment, the connecting pipe 3 is communicated with the joint ring 2 and the blowout prevention original box 4 until the sealing plate 6 ascends to the highest position;

the servo motor 12 is closed, at the moment, the stock solution in the continuous oil pipe body 1 sequentially enters the connecting pipe 3 and then enters the blowout prevention stock box 4, and finally enters the drilling fluid circulation system through the oil drain pipe 13, so that the pressure intensity in the continuous oil pipe body 1 is reduced, and the transportation pressure of the continuous oil pipe body 1 is reduced;

when the section of continuous oil pipe body 1 positioned above is dismounted on the joint ring 2, the section of continuous oil pipe body 1 positioned below can be automatically sealed, at the moment, the connecting pipe 3 is in a communicating state, at the moment, the stock solution in the section of continuous oil pipe body 1 positioned above enters the blowout prevention original box 4, the stock solution enters the drilling fluid circulation system through the oil drain pipe 13 until the stock solution in the section of continuous oil pipe body 1 positioned above is completely discharged, the servo motor 12 is started to reverse, the output shaft of the servo motor 12 drives the sealing plate 6 to descend in the sliding groove 5 until the sealing plate 6 seals the connecting pipe 3, the servo motor 12 is closed, and the stock solution in the blowout prevention original box 4 is prevented from overflowing reversely.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a coiled tubing blowout prevention box, includes two sections coiled tubing body (1) and connects circle (2) and fixed connecting pipe (3) that set up in the outer wall of connecting circle (2), two sections coiled tubing body (1) symmetry is fixed to be set up in the both sides of connecting circle (2), a serial communication port, connecting pipe (3) tip is fixed to be provided with blowout prevention former box (4), connect circle (2), connecting pipe (3) and blowout prevention former box (4) intercommunication setting, spout (5) have been seted up at connecting pipe (3) top, spout (5) inside wall sliding connection has closing plate (6), be equipped with the sealing device who lets closing plate (6) sealing connection pipe (3) on connecting pipe (3) lateral wall, blowout prevention former box (4) lateral wall intercommunication is provided with oil drain pipe (13).

2. The coiled tubing blowout prevention box according to claim 1, wherein the sealing device comprises a blowout prevention box (8) fixedly connected to the outer side wall of the connecting pipe (3), a threaded rod (9) is rotatably connected to the inner top of the blowout prevention box (8), a threaded hole (10) is formed in the top of the sealing plate (6), the outer side wall of the threaded rod (9) is in threaded connection with the inner side wall of the threaded hole (10), a fixed box (11) is fixedly connected to the top of the blowout prevention box (8), a servo motor (12) is fixedly connected to the inner top of the fixed box (11), and an output shaft of the servo motor (12) is fixedly connected with the end part of the threaded rod (9).

3. A coiled tubing blowout preventer according to claim 1, wherein the sealing plate (6) has a width and length that are both greater than the inner diameter of the connecting tube (3).

4. A coiled tubing blowout preventer according to claim 2, wherein the top of the spill-proof casing (8) is provided with a rotation hole, and the outer side wall of the threaded rod (9) is rotatably connected with the inner side wall of the rotation hole.

5. A coiled tubing blowout preventer according to claim 1, wherein the outer side wall of the joint ring (2) is provided with a pressure gauge (7).