CN212249891U - Remote quick connecting device for well abandoning joint of marine riser - Google Patents

Abstract

The utility model provides a long-range quick connecting device that is used for water-stop casing to abandon well joint, anticreep piece in the guide way of anticreep groove and the public head of water-stop casing of the female head of embedding water-stop casing, be provided with the spout on the anticreep piece, the anticreep bolt has been inserted in the spout, anticreep piece right side fixedly connected with pull rod, the cover is equipped with the spring on the pull rod, the right-hand member of pull rod is equipped with first bidirectional derotation connecting bolt and second connecting bolt from the left hand right side in proper order, the right-hand member of second connecting bolt stretches out the right-hand member face and the fixedly connected with go-between of the public. The utility model discloses can accomplish sheathed tube connection and disconnection high-efficiently to replace the mechanical cutting, ensured underwater operation personnel's safety.

Description

Remote quick connecting device for well abandoning joint of marine riser

Technical Field

The utility model relates to a technical field of well operation is abandoned in offshore oil field, more specifically relates to a long-range quick connecting device that is used for water-proof casing to abandon well joint.

Background

In offshore oil operation, when an offshore oil field stops developing or a dangerous sea condition occurs and a platform is in a dangerous condition, an underwater oil well needs to be effectively sealed and abandoned, at the moment, quick connection and disconnection operation needs to be carried out between underwater casings, at present, the offshore oil field mostly adopts high-pressure hydraulic grinding cutting or mechanical cutting to recover the casings, and by adopting the mode, the operation is long in time consumption and low in efficiency, and when the offshore oil field stops developing or the dangerous sea condition occurs and the underwater oil field needs to be effectively sealed and abandoned, offshore operation personnel lack safety guarantee.

Therefore, there is a need in the art for a technical solution that can quickly install and remove a riser casing from a long distance.

SUMMERY OF THE UTILITY MODEL

The utility model provides a be not enough to above-mentioned prior art, the utility model provides a have response time short, operate simple and easy characteristics, and installation time shortens simultaneously practiced thrift the marine working expense greatly, reduces the long-range quick connecting device that is used for the water-stop casing to abandon well joint of platform undersea personnel's operation risk simultaneously.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides a long-range quick connecting device that is used for water-stop casing to abandon well and connects, comprises the device body, the device body is including the anticreep piece in the anticreep groove of the female head of embedding water-stop casing and the guide way of the public head of water-stop casing, be provided with the spout on the anticreep piece, the anticreep bolt of having inserted in the spout, anticreep piece right side fixedly connected with pull rod, the cover is equipped with the spring on the pull rod, the right-hand member of pull rod is equipped with first two-way derotation connecting bolt and second connecting bolt from a left side right side in proper order, the right-hand member of second connecting bolt stretches out the public right-hand member face of water-stop casing and.

The left end of the pull rod is fixedly connected with the right end of the anti-falling block through threads.

The left end of the first bidirectional counter-rotating connecting bolt and the left end of the second connecting bolt are both nuts with internal thread structures, the right end of the first bidirectional counter-rotating connecting bolt is a screw rod with external thread structures, the right end of the pull rod is fixedly connected with the left end of the first bidirectional counter-rotating connecting bolt through threads, the left end of the second connecting bolt is fixedly connected with the right end of the first bidirectional counter-rotating connecting bolt through threads, the right end of the second connecting bolt is provided with a through hole, and the connecting ring penetrates through the through hole.

Compared with the prior art, the utility model beneficial effect be: the anti-falling bolt penetrates through the upper sliding groove of the anti-falling block and is fixed on the male head of the marine riser, and the anti-falling bolt slides left and right in an effective stroke in the sliding groove along with the left and right movement of the anti-falling block, so that the anti-falling block is restricted to only move left and right along the guide groove and the anti-falling groove, the pull rod is remotely controlled by means of the steel wire rope and the pull ring, the connection and disconnection of the female head and the male head of the marine riser can be remotely controlled by utilizing the elasticity of the spring, mechanical cutting is replaced, and the safety of underwater operators is; moreover, the bolt, the pull rod, the connecting ring and the like are all detachable, so that the utility model can be repeatedly used, and the cost is saved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of fig. 1 at a.

Reference numerals: 1-anti-drop block, 2-anti-drop bolt, 3-spring, 4-pull rod, 5-first bidirectional counter-rotating connecting bolt, 6-second connecting bolt, 7-connecting ring, 8-steel wire rope, 9-marine riser female head, 10-marine riser male head and 11-sliding chute.

Detailed Description

The remote quick connection device for the well abandoning joint of the marine riser comprises a device body, wherein the device body comprises an anti-drop groove embedded into a female head 9 of the marine riser and an anti-drop block 1 in a guide groove of a male head 10 of the marine riser, a sliding groove 11 is formed in the anti-drop block 1, an anti-drop bolt 2 is inserted into the sliding groove 11, a screw rod of the anti-drop bolt 2 penetrates through the sliding groove 11 and is finally inserted into an internal thread hole of the male head 10 of the marine riser, the anti-drop bolt 2 is screwed down, the anti-drop bolt 2 is fixed on the male head 10 of the marine riser, and the anti-drop block 1 is also limited in the guide groove and the anti-drop groove. The 11 is the rectangular groove of axial setting in the spout, can control anticreep piece 1 and follow axial side to side slip in the guide way of the public head 9 of water-stop sleeve pipe. 1 right side fixedly connected with pull rod 4 of anticreep piece, the cover is equipped with spring 3 on pull rod 4, and the left end of spring 3 supports the right-hand member of anticreep piece 1, and the right-hand member of spring 3 supports the inner wall of guide way, and anticreep piece 1 is along axial horizontal slip's in-process in the guide way of the public head 9 of water-stop sleeve, and spring 3 remains the state of compressed all the time. In this embodiment, a metal cover plate is disposed above the guiding groove, and the metal cover plate is fastened to the male head 10 of the riser, so as to fasten the guiding groove, the anti-dropping block 1, the spring 3, the pull rod 4 and other components in the groove. The left end of pull rod 4 has the external screw thread, and the right-hand member of anticreep piece 1 has the internal thread hole, and the left end of pull rod 4 inserts in the internal thread hole of anticreep piece 1 right-hand member to rotatory screwing up, thereby make the left end of pull rod 4 and the right-hand member of anticreep piece 1 pass through thread fixed connection. The axial length of the anti-drop block 1 is lower than the axial length of the guide groove of the riser male head 9. The stroke of the anti-drop bolt 2 in the sliding groove 11 of the anti-drop block 1 and the compression stroke of the spring 3 also need to ensure that the anti-drop block 1 can be retracted into the guide groove when compressing the spring 3.

The right-hand member of pull rod 4 is overlapped from a left side right side in proper order and is equipped with first two-way derotation connecting bolt 5 and second connecting bolt 6, and the right-hand member of pull rod 4 is provided with the external screw thread, and first two-way derotation connecting bolt 5 is for having the nut of internal thread structure, and the right-hand member is the screw rod that has external thread structure, and the left end of second connecting bolt 6 is provided with the internal thread hole, and the right-hand member is the polished rod, has still seted up. During assembly, the right end of the pull rod 4 is inserted into and tightened against the left end of the first bi-directional counter-rotating connecting bolt 5, and the left end of the second connecting bolt 6 is also inserted into and tightened against the right end of the first bi-directional counter-rotating connecting bolt 5. Similarly, the right end of the first bidirectional reverse-rotation connecting bolt 5 is inserted into the internal thread hole at the left end of the second connecting bolt 6 and is tightened, so that the pull rod 4, the first bidirectional reverse-rotation connecting bolt 5 and the second connecting bolt 6 are fixedly connected. The connection ring 7 penetrates the through hole. The right end of the second connecting bolt 6 extends out of the right end face of the riser male head 10 and is fixedly connected with a connecting ring 7, and the connecting ring 7 is further connected with a steel wire rope 8.

During the use, pull rod 4 passes the axial hole in the public head 10 of water-stop casing, and first two-way derotation connecting bolt 5 and second connecting bolt 6 are sheathed in proper order and are screwed up in pull rod 4 right-hand member, and go-between 7 has the opening, just enables the go-between and passes the through-hole on the second connecting bolt 6, can weld after connecting and die to guarantee its intensity, wire rope 8 passes go-between 7, and the tip is by operation personnel remote control. The anticreep piece 1 through anticreep bolt 2 on anticreep piece 1 effective stroke in the spout 11 and the compression stroke of spring 3 restraint jointly down, through the guide way slip of pull rod 4 pulling its public head 10 of marine riser, finally realize the public head 10 of marine riser and the female first 9 quick connection and the disconnection of marine riser. When a sleeve needs to be put in, an operator tightens the steel wire rope 8, the spring 3 is compressed, the anti-falling block 1 retracts to the right into the guide groove, the steel wire rope 8 is loosened until the sleeve is in butt joint with the sleeve, the anti-falling block 1 is ejected leftwards by the spring, the left end of the anti-falling block 1 is clamped into the anti-falling groove, the left end of the anti-falling block 1 abuts against the inner wall of the anti-falling groove, and the spring 3 still keeps a compressed state, so that sleeve connection is completed; when the casing pipe is disconnected, the anti-separation block 1 is pulled back to the right through the steel wire rope 8, the spring 3 is compressed, the anti-separation block 1 retracts to the right into the guide groove, and then the female head 9 of the waterproof casing pipe and the male head 10 of the waterproof casing pipe are separated until the casing pipe is disconnected.

The circumferential positions of the female head 9 of the riser and the male head 10 of the riser can be correspondingly provided with a plurality of anti-drop grooves and guide grooves respectively, and correspondingly, the remote quick connecting device can also be provided with a plurality of groups according to actual conditions.

The terms "left" and "right" in the present invention are used for indicating the position relationship, and are only for conveniently describing the position relationship of each component, and are not to be construed as limiting the present invention.

The above description is only the preferred embodiment of the present invention, but the present invention is not limited to the above-mentioned specific embodiments, and for those skilled in the art, a plurality of modifications and improvements can be made without departing from the inventive concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention.

Claims (3)

1. A remote quick connecting device for a well abandoning joint of a water-resisting casing pipe comprises a device body, it is characterized in that the device body comprises an anti-drop groove embedded into the female head (9) of the marine riser and an anti-drop block (1) in the guide groove of the male head (10) of the marine riser, the anti-falling block (1) is provided with a sliding chute (11), an anti-falling bolt (2) is inserted in the sliding chute (11), a pull rod (4) is fixedly connected to the right side of the anti-falling block (1), a spring (3) is sleeved on the pull rod (4), the right end of the pull rod (4) is sleeved with a first bidirectional reverse rotation connecting bolt (5) and a second connecting bolt (6) from left to right in sequence, the right end of the second connecting bolt (6) extends out of the right end face of the riser male head (10) and is fixedly connected with a connecting ring (7), and the connecting ring (7) is further connected with a steel wire rope (8).

2. The remote quick connection device for a riser well abandoning joint according to claim 1, wherein the left end of the pull rod (4) has an external thread structure and is fixedly connected with the right end of the anti-drop block (1) through threads.

3. The remote quick connection device for the well abandoning joint of the riser according to claim 1, wherein the left end of the first bidirectional counter-rotating connecting bolt (5) has an internal thread structure, the right end of the first bidirectional counter-rotating connecting bolt has an external thread structure, the right end of the pull rod (4) has an internal thread structure and is fixedly connected with the left end of the first bidirectional counter-rotating connecting bolt (5) through threads, the left end of the second connecting bolt (6) has an internal thread structure and is fixedly connected with the right end of the first bidirectional counter-rotating connecting bolt (5) through threads, the right end of the second connecting bolt (6) is provided with a through hole, and the connecting ring (7) penetrates through the through hole.

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