Single-ram coiled tubing blowout preventer

Abstract

The utility model relates to the technical field of oil pipe blowout preventers, in particular to a single-ram continuous oil pipe blowout preventer which comprises an oil pipe body, the top of the oil pipe body is provided with a blowout preventer body, the top of the blowout preventer body is fixedly connected with an oil outlet pipe, the outer side of the blowout preventer body is fixedly connected with a first electric telescopic rod, and the outer side of the first electric telescopic rod is fixedly connected with a second electric telescopic rod. A starting switch is fixedly connected to the outer side of the blowout preventer body, a movable rod is fixedly connected to the outer side of the first electric telescopic rod, a movable disc is fixedly connected to the outer side of the movable rod, a second electric telescopic rod is fixedly connected to the top of the movable disc, and a lifting rod is fixedly connected to the bottom of the second electric telescopic rod. The continuous oil pipe blowout preventer is simple in structure and convenient to use, the sealing performance of the blowout preventer can be enhanced, so that oil leaks from the position between an oil pipe and the plugging plate, and meanwhile the blowout preventer and the continuous oil pipe can be conveniently mounted and dismounted.

Description

Technical Field

[0001] The utility model relates to a single-gate coiled tubing blowout preventer, belonging to the technical field of tubing blowout preventers. Background Art

[0002] Coiled tubing is a pipe made of low-carbon alloy steel with good flexibility, also known as flexible tubing. A roll of coiled tubing is several thousand meters long and can replace conventional tubing for many operations. Since coiled tubing operation equipment has the characteristics of pressure operation and continuous lifting and lowering, the equipment is small in size, has a fast operation cycle and low cost, it is widely used in oil and gas field testing, well repair, completion and other operations. Coiled tubing blowout preventers are mainly used to close the wellhead of coiled tubing during oil testing, well repair, completion and other operations to prevent blowout accidents, and have high sealing requirements.

[0003] The existing single-gate coiled tubing blowout preventer still has some problems during use. Generally, the semi-sealed gate is pushed by the piston rod to perform blowout prevention sealing. During use, there is a gap between the coiled tubing and the semi-sealed gate, and the sealing effect of the coiled tubing is poor, resulting in a reduced blowout prevention effect, which greatly affects the safety of the wellhead. At the same time, when the coiled tubing and the blowout preventer are installed, they are basically connected by threads to fix the blowout preventer on the top of the coiled tubing. However, this connection method is relatively troublesome during installation and disassembly. Utility Model Content

[0004] The purpose of the utility model is to provide a single-gate coiled tubing blowout preventer. The utility model has a simple structure and is easy to use. It can enhance the sealing performance of the blowout preventer itself, thereby preventing oil from leaking from between the oil pipe and the plugging plate. At the same time, it is convenient to install and disassemble the blowout preventer and the coiled tubing, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A single-gate coiled tubing blowout preventer comprises a tubing body, a blowout preventer body is installed on the top of the tubing body, an oil outlet pipe is fixedly connected to the top of the blowout preventer body, a No. 1 electric telescopic rod is fixedly connected to the outside of the blowout preventer body, a starting switch is fixedly connected to the outside of the blowout preventer body, a movable rod is fixedly connected to the outside of the No. 1 electric telescopic rod, a movable plate is fixedly connected to the outside of the movable rod, a No. 2 electric telescopic rod is fixedly connected to the top of the movable plate, a lifting rod is fixedly connected to the bottom of the No. 2 electric telescopic rod, and a blocking cover is fixedly connected to the bottom of the lifting rod.

[0007] Furthermore, a sealing ring is fixedly connected to the bottom of the blowout preventer body, a connecting plate is fixedly connected to the bottom of the blowout preventer body, a threaded pipe is fixedly connected to the outer side of the connecting plate, a screw is threadedly connected to the inner side of the threaded pipe, a rotating cover is fixedly connected to the outer side of the screw, a pushing rod is fixedly connected to the end of the screw away from the rotating cover, a clamping cover is installed on the outer side of the push rod, and a rotating hole is opened inside the clamping cover.

[0008] Furthermore, the starting switch is electrically connected to the No. 1 electric telescopic rod and the No. 2 electric telescopic rod, and the starting switch is disconnected and controlled between the two.

[0009] Furthermore, the movable rod is movably connected to the inside of the blowout preventer body, and the movable plate is movably connected to the inside of the blowout preventer body through the movable rod.

[0010] Furthermore, the lifting rod crosses the interior of the movable plate, and the blocking cover is movably connected to the bottom of the movable plate through the lifting rod.

[0011] Furthermore, the connecting plates are symmetrically distributed below the blowout preventer body, and the screw is rotatably connected to the inside of the threaded pipe through a rotating cover.

[0012] Furthermore, one end of the push rod away from the screw rod is rotatably clamped in the inside of the rotating hole, and the clamping cover is symmetrically distributed on the outside of the oil pipe body.

[0013] The beneficial effects of the utility model are:

[0014] (I) The utility model is provided with an oil pipe body and a blowout preventer body. When the oil outlet of the oil pipe body needs to be blocked, the No. 1 electric telescopic rod is started by starting the switch. At this time, the No. 1 electric telescopic rod drives the movable rod to move, and the movable rod drives the movable plate to move through the movement. When the movable plate moves to the top of the oil pipe body, the No. 2 electric telescopic rod is started by starting the switch. At this time, the No. 2 electric telescopic rod drives the lifting rod to move downward, so that the blocking cover at the bottom of the lifting rod moves to the outside of the oil pipe body, thereby sealing the oil pipe body. This all-inclusive sealing method replaces the sealing plate to block the oil outlet, which can effectively prevent oil leakage.

[0015] (II) The utility model is provided with a tubing body and a blowout preventer body. When the blowout preventer body needs to be installed on the top of the tubing body, the tubing body is firstly introduced into the interior of the blowout preventer body through the sealing ring. At this time, the rotating cover is rotated to drive the screw to rotate inside the threaded tube, thereby moving the screw. The movement of the screw drives the push rod to move. Since one end of the push rod is rotatably clamped in the rotating hole inside the clamping cover, the two clamping covers can be moved to the outside of the tubing body when the push rod moves, thereby clamping the tubing body. When disassembly is required, it is only necessary to reverse the rotating cover to keep the clamping cover away from the tubing body, thereby avoiding the tubing body being threadedly connected to the interior of the blowout preventer body, which causes troubles during disassembly and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 This is a structural schematic diagram of a single-gate coiled tubing blowout preventer of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the outer side of the movable plate of the single-gate coiled tubing blowout preventer of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the outer side of the oil pipe body of the single-gate coiled tubing blowout preventer of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the outer side of the clamping cover of the single-gate coiled tubing blowout preventer of the utility model;

[0021] Numbers in the figure: 1, oil pipe body; 2, blowout preventer body; 3, oil outlet pipe; 4, No. 1 electric telescopic rod; 5, start switch; 6, movable rod; 7, movable plate; 8, No. 2 electric telescopic rod; 9, lifting rod; 10, blocking cover; 11, sealing ring; 12, connecting plate; 13, threaded pipe; 14, screw; 15, rotating cover; 16, pushing rod; 17, clamping cover; 18, rotating hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1 Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] The single-gate coiled tubing blowout preventer comprises a tubing body 1, a blowout preventer body 2 is installed on the top of the tubing body 1, an oil outlet pipe 3 is fixedly connected to the top of the blowout preventer body 2, a No. 1 electric telescopic rod 4 is fixedly connected to the outside of the blowout preventer body 2, a starting switch 5 is fixedly connected to the outside of the blowout preventer body 2, a movable rod 6 is fixedly connected to the outside of the No. 1 electric telescopic rod 4, a movable plate 7 is fixedly connected to the outside of the movable rod 6, a No. 2 electric telescopic rod 8 is fixedly connected to the top of the movable plate 7, a lifting rod 9 is fixedly connected to the bottom of the No. 2 electric telescopic rod 8, and a blocking cover 10 is fixedly connected to the bottom of the lifting rod 9.

[0025] Specifically, Figure 1 As shown, the start switch 5 is electrically connected to the No. 1 electric telescopic rod 4 and the No. 2 electric telescopic rod 8, and the start switch 5 is disconnected from the two, the movable rod 6 is movably connected to the inside of the blowout preventer body 2, the movable plate 7 is movably connected to the inside of the blowout preventer body 2 through the movable rod 6, the lifting rod 9 crosses the inside of the movable plate 7, and the blocking cover 10 is movably connected to the bottom of the movable plate 7 through the lifting rod 9.

[0026] In this embodiment, by setting the oil pipe body 1 and the blowout preventer body 2, when the oil outlet of the oil pipe body 1 needs to be blocked, the No. 1 electric telescopic rod 4 is started by starting the switch 5, and the No. 1 electric telescopic rod 4 will drive the movable rod 6 to move, and the movable plate 7 is driven to move by the movement of the movable rod 6. When the movable plate 7 moves to the top of the oil pipe body 1, the No. 2 electric telescopic rod 8 is started by starting the switch 5, and the No. 2 electric telescopic rod 8 will drive the lifting rod 9 to move downward, so that the blocking cover 10 at the bottom of the lifting rod 9 moves to the outside of the oil pipe body 1, so as to seal the oil pipe body 1. This all-inclusive sealing method replaces the sealing plate to block the oil outlet, which can effectively prevent oil leakage.

[0027] Example 2 Please refer to Figure 1 , Figure 2 and Figure 4 The difference between this embodiment and the embodiment 1 is that: a sealing ring 11 is fixedly connected to the bottom of the blowout preventer body 2, a connecting plate 12 is fixedly connected to the bottom of the blowout preventer body 2, a threaded pipe 13 is fixedly connected to the outer side of the connecting plate 12, a screw 14 is threadedly connected to the inner side of the threaded pipe 13, a rotating cover 15 is fixedly connected to the outer side of the screw 14, a push rod 16 is fixedly connected to the end of the screw 14 away from the rotating cover 15, a clamping cover 17 is installed on the outer side of the push rod 16, and a rotating hole 18 is opened inside the clamping cover 17.

[0028] Specifically, Figure 1-4As shown, the connecting plate 12 is symmetrically distributed below the blowout preventer body 2, the screw 14 is rotatably connected to the inside of the threaded pipe 13 through the rotating cover 15, the end of the push rod 16 away from the screw 14 is rotatably clamped in the inside of the rotating hole 18, and the clamping cover 17 is symmetrically distributed on the outside of the oil pipe body 1.

[0029] In this embodiment, by providing the tubing body 1 and the BOP body 2, when the BOP body 2 needs to be installed on the tubing body 1, the tubing body 1 is firstly inserted into the inside of the BOP body 2 through the sealing ring 11, and then the rotating cover 15 is rotated to drive the screw 14 to rotate inside the threaded tube 13, thereby moving the screw 14, and the movement of the screw 14 drives the push rod 16 to move, because one end of the push rod 16 is rotatably clamped in the rotating hole 18 inside the clamping cover 17, so when the push rod 16 moves, the two clamping covers 17 can be moved to the outside of the tubing body 1, so as to clamp the tubing body 1, and when it needs to be disassembled, it is only necessary to reverse the rotating cover 15 to make the clamping cover 17 away from the tubing body 1, so as to avoid the tubing body 1 being threadedly connected to the inside of the BOP body 2, which causes troubles in both disassembly and installation.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-gate coiled tubing blowout preventer, comprising a tubing body (1), characterized in that: A blowout preventer body (2) is installed on the top of the oil pipe body (1), an oil outlet pipe (3) is fixedly connected to the top of the blowout preventer body (2), a No. 1 electric telescopic rod (4) is fixedly connected to the outside of the blowout preventer body (2), a start switch (5) is fixedly connected to the outside of the blowout preventer body (2), a movable rod (6) is fixedly connected to the outside of the No. 1 electric telescopic rod (4), a movable plate (7) is fixedly connected to the outside of the movable rod (6), a No. 2 electric telescopic rod (8) is fixedly connected to the top of the movable plate (7), a lifting rod (9) is fixedly connected to the bottom of the No. 2 electric telescopic rod (8), and a blocking cover (10) is fixedly connected to the bottom of the lifting rod (9).

2. The single-gate coiled tubing blowout preventer according to claim 1, characterized in that: The bottom of the blowout preventer body (2) is fixedly connected with a sealing ring (11), the bottom of the blowout preventer body (2) is fixedly connected with a connecting plate (12), the outer side of the connecting plate (12) is fixedly connected with a threaded pipe (13), the inner side of the threaded pipe (13) is threadedly connected with a screw rod (14), the outer side of the screw rod (14) is fixedly connected with a rotating cover (15), one end of the screw rod (14) away from the rotating cover (15) is fixedly connected with a pushing rod (16), the outer side of the pushing rod (16) is installed with a clamping cover (17), and the inner side of the clamping cover (17) is provided with a rotating hole (18).

3. The single-gate coiled tubing blowout preventer according to claim 1, characterized in that: The starting switch (5) is electrically connected to the first electric telescopic rod (4) and the second electric telescopic rod (8), and the starting switch (5) is disconnected and controlled from the two.

4. The single-gate coiled tubing blowout preventer according to claim 1, characterized in that: The movable rod (6) is movably connected to the inside of the blowout preventer body (2), and the movable plate (7) is movably connected to the inside of the blowout preventer body (2) through the movable rod (6).

5. The single-gate coiled tubing blowout preventer according to claim 1, characterized in that: The lifting rod (9) crosses the interior of the movable plate (7), and the blocking cover (10) is movably connected to the bottom of the movable plate (7) through the lifting rod (9).

6. The single-gate coiled tubing blowout preventer according to claim 2, characterized in that: The connecting plates (12) are symmetrically distributed below the blowout preventer body (2), and the screw rod (14) is rotatably connected to the inside of the threaded pipe (13) through a rotating cover (15).

7. The single-gate coiled tubing blowout preventer according to claim 2, characterized in that: One end of the push rod (16) away from the screw rod (14) is rotatably clamped inside the rotating hole (18), and the clamping cover (17) is symmetrically distributed on the outside of the oil pipe body (1).

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