阅读说明：本技术 座封悬挂试压装置 (Seat seal suspension pressure testing device ) 是由 郎明才 王少军 刘洪成 杨景松 刘东武 黄文利 张武勇 于 2021-09-28 设计创作，主要内容包括：一种座封悬挂试压装置,从上至下接箍、密封皮碗、喇叭接箍、上接头短接、锚定挡套逐序螺纹连接,锚定挡套上的弹簧卡套与复位弹簧一端连接,复位弹簧的另一端与上锚定挡套上的弹簧卡套连接,上锚定挡套上设有上锚定锥体,上燕尾锚瓦配套在上锚定锥体上,上燕尾锚瓦通过上连接块固定在上连接套的上部,上连接套下部设有下锚定锥体,下燕尾锚瓦配套在下锚定锥体上,下燕尾锚瓦下部通过下连接块与下连接套上部连接,在下连接套内设有阶梯向内的阶梯型挡套,在阶梯型挡套内阶梯上设有一个内周设有滚球的锁套,锁套内周与下锚定锥体动配合,阶梯型挡套下部设有上部设有顶套的扶正器,扶正器套在中心管上,实现更换井口或井口套管短接不起出井里的管柱。(A seat seal suspension pressure test device comprises a coupling, a sealing leather cup, a horn coupling, an upper joint short joint and an anchoring retaining sleeve which are sequentially connected by screw threads from top to bottom, a spring sleeve on the anchoring retaining sleeve is connected with one end of a return spring, the other end of the return spring is connected with the spring sleeve on the upper anchoring retaining sleeve, an upper anchoring cone is arranged on the upper anchoring retaining sleeve, an upper dovetail anchor tile is matched with the upper anchoring cone, the upper dovetail anchor tile is fixed on the upper part of the upper connecting sleeve through an upper connecting block, a lower anchoring cone is arranged on the lower part of the upper connecting sleeve, a lower anchor tile is matched with the lower anchoring cone, the lower part of the lower dovetail anchor tile is connected with the upper part of the lower connecting sleeve through a lower connecting block, a stepped retaining sleeve ball with inward steps is arranged in the lower connecting sleeve, a lock sleeve with the inner periphery matched with the lower anchoring cone in a movable manner is arranged on the inner steps of the stepped retaining sleeve, a centralizer with a top sleeve is arranged on the lower part of the stepped retaining sleeve, the centralizer is sleeved on the central pipe, so that a well head is replaced or a well head casing pipe is short-circuited and cannot get out of a pipe column in the well.)

1. A seat-seal suspension pressure testing device comprising: the sealing device comprises a coupling (1), a sealing leather cup (2), a short joint (3), a horn coupling (4), an upper joint short joint (5), an upper joint (6), an anchoring retaining sleeve (7), a reset spring (8), an upper anchoring retaining sleeve (9), an upper dovetail anchor tile (10), an upper anchoring cone (11), an upper connecting block (12), an upper connecting sleeve (13), a lower anchoring cone (14), a lower dovetail anchor tile (15), a lower connecting block (16), a lower connecting sleeve (17), a top sleeve (18), a centralizing body (19), a centralizing block (20), a swivel base (21), a swivel retaining cap (22), a central tube (23), a lower coupling (24), a stepped retaining sleeve (25), a locking sleeve (26), an arched centralizing body (27), a spring (28), a swivel (29) and a connecting sleeve (30), and is characterized in that the coupling is in threaded connection with the sealing leather cup, the sealing leather cup is in threaded connection with the horn coupling through the short joint, the horn coupling is connected with the upper joint through an upper joint short circuit in a threaded manner, the upper joint is connected with the anchoring retaining sleeve in a threaded manner, a spring clamping sleeve on the anchoring retaining sleeve is connected with one end of a reset spring, the other end of the reset spring is connected with the spring clamping sleeve on the upper anchoring retaining sleeve, an upper anchoring cone is arranged on the upper anchoring retaining sleeve, an upper dovetail anchor tile is matched with the upper anchoring cone, the upper dovetail anchor tile is fixed on the upper part of the upper connecting sleeve through an upper connecting block, a lower anchoring cone is arranged on the lower part of the upper connecting sleeve, a lower dovetail anchor tile is matched with the lower anchoring cone, the lower part of the lower dovetail anchor tile is connected with the upper part of the lower connecting sleeve through a lower connecting block, a stepped baffle sleeve with inward steps is arranged in the lower connecting sleeve, a lock sleeve with a rolling ball arranged on the inner periphery is arranged on the steps in the stepped baffle sleeve, the inner periphery of the lock sleeve is in movable fit with the lower anchoring cone, a centralizer with a top sleeve on the upper part is arranged on the lower part of the stepped baffle sleeve, and the centralizer is sleeved on the central tube; when the setting suspension pressure testing device is set, the centralizer is stopped at the original position, the central tube moves downwards, the top sleeve pushes the stepped retaining sleeve to move upwards, the lock sleeve and the stepped retaining sleeve simultaneously slide upwards, the lower dovetail anchor tile and the lock sleeve push upwards, the lower anchoring cone drives the upper connecting sleeve to slide upwards, the upper connecting sleeve drives the upper dovetail anchor tile to slide upwards, and the setting suspension pressure testing device is set on the sleeve; the sealing rubber cup is sealed with the sleeve pipe, and from the sleeve pipe water injection, the leakage or the pressure relief are lost to this section sleeve pipe of sealing cup to the examination well head, change sealer or well head.

2. A seat-seal suspension pressure testing device according to claim 1, characterized in that: the upper part of the bell mouth coupling is provided with a bell mouth, and the lower part of the bell mouth coupling is provided with a coupling.

3. A seat-seal suspension pressure testing device according to claim 1, characterized in that: the dovetail anchor tile is rectangular, the upper portion of the dovetail anchor tile is transversely provided with rectangular teeth, the lower portion of the dovetail anchor tile is provided with a dovetail plate, the middle of the lower end of the dovetail plate is provided with a concave groove, and a rotating shaft is arranged on the concave groove.

Technical Field

The invention relates to the technical field of oil field oil gas water gas well wellhead equipment replacement, in particular to a seat seal suspension pressure testing device. The problems of complex process, more used equipment, long occupied time and high labor intensity in the prior art are solved.

Background

At present, in order to increase the crude oil yield, a plurality of oil wells in an oil field often adopt special operations, such as high-pressure water injection, high-pressure steam injection, fracturing, acidification, sand prevention and the like, and well heads of different models need to be replaced in the process of carrying out the special operations. In order to save cost, the tubular column in the well is not often taken out, the load of the tubular column in the well is about between 15 and 50 tons, the operation steps of replacing wellheads of different models are that firstly, the screw of the blowout preventer is disassembled, then an oil pipe short joint and a steel wire rope are used for hoisting dozens of tons of tubular columns and the blowout preventer together, a hoisting clamp is arranged below the tubular columns and is disassembled, the work of disassembling the blowout preventer is completed, then the disassembly of the wellhead is started, the steps are the same, the tubular column in the well is loaded, the process is tedious, the consumption duration is long (two hours are needed for replacing the wellhead generally), and the danger coefficient is high, so the operators are in high tension in the whole process.

Disclosure of Invention

The invention aims to provide a seat seal suspension pressure testing device, which overcomes the defects in the prior art.

The technical scheme of the invention is realized by the following modes:

a seat seal suspension pressure test device comprises a coupling, a sealing leather cup, a short joint, a horn coupling, an upper joint short joint, an upper joint, an anchoring retaining sleeve, a reset spring, an upper anchoring retaining sleeve, an upper dovetail anchor tile, an upper anchoring cone, an upper connecting block, an upper connecting sleeve, a lower anchoring cone, a lower dovetail anchor tile, a lower connecting block, a lower connecting sleeve, a top sleeve, a centralizing body, a centralizing block, a rotating ring seat, a rotating ring retaining cap, a central tube, a lower joint, a stepped retaining sleeve, a locking sleeve, an arched centralizing body, a spring, a rotating ring and a connecting sleeve; the method is characterized in that: the coupling is in threaded connection with the sealing leather cup, the sealing leather cup is in threaded connection with the horn coupling through a short joint, the horn coupling is in threaded connection with the upper joint through an upper joint short joint, the upper joint is in threaded connection with the anchoring retaining sleeve, a spring clamping sleeve on the anchoring retaining sleeve is connected with one end of a return spring, the other end of the return spring is connected with a spring clamping sleeve on the upper anchoring retaining sleeve, an upper anchoring cone is arranged on the upper anchoring retaining sleeve, an upper dovetail anchor tile is matched with the upper anchoring cone, the upper dovetail anchor tile is fixed on the upper portion of the upper connecting sleeve through an upper connecting block, a lower anchoring cone is arranged on the lower portion of the upper connecting sleeve, a lower dovetail tile is matched with the lower anchoring cone through a lower connecting block, a stepped retaining sleeve with inward steps is arranged in the lower connecting sleeve, a lock sleeve with a rolling ball is arranged on the inner steps of the stepped retaining sleeve, and the inner periphery of the lock sleeve is in movable fit with the lower anchoring cone, the lower part of the stepped retaining sleeve is provided with a centralizer of which the upper part is provided with a top sleeve, and the centralizer is sleeved on the central pipe; when the seat seal suspension pressure test device is set, the centralizer is stopped at the original position, the central tube moves downwards, the top sleeve pushes the stepped retaining sleeve to move upwards, the lock sleeve and the stepped retaining sleeve simultaneously slide upwards, the lower dovetail anchor tile and the lock sleeve push upwards, the lower anchoring cone drives the upper connecting sleeve to slide upwards, the upper connecting sleeve drives the upper dovetail anchor tile to slide upwards, and the seat seal suspension pressure test device is set on the sleeve; the sealing rubber cup is sealed with the sleeve, and from the sleeve water injection, leakage or pressure relief change sealer or well head are tried to this section sleeve pipe of well head to the sealing cup.

The upper part of the bell mouth coupling is provided with a bell mouth, and the lower part of the bell mouth coupling is provided with a coupling.

The dovetail anchor tile is rectangular, the upper portion of the dovetail anchor tile is transversely provided with rectangular teeth, the lower portion of the dovetail anchor tile is provided with a dovetail plate, the middle of the lower end of the dovetail plate is provided with a concave groove, and a rotating shaft is arranged on the concave groove.

Compared with the prior art, the invention has the following advantages:

when the setting suspension pressure testing device works, the tubular column in the well is not lifted, well mouths of different models are replaced or simultaneously pressure testing is carried out through clear water, whether the short section of the sleeve pipe leaks from the blowout preventer or not is detected, and the damaged short section of the sleeve pipe is replaced.

Description of the drawings:

FIG. 1 is a schematic front view of the present invention

Section A-A in FIG. 2-FIG. 1 is a schematic view of a front half-section structure

In the figure, 1-coupling, 2-sealing leather cup, 3-short joint, 4-horn coupling, 5-upper coupling short joint, 6-upper coupling, 7-anchoring retaining sleeve, 8-reset spring, 9-upper anchoring retaining sleeve, 10-upper dovetail anchor tile, 11-upper anchoring cone, 12-upper connecting block, 13-upper connecting sleeve, 14-lower anchoring cone and 15-lower dovetail anchor tile, 16-lower connecting block, 17-lower connecting sleeve, 18-top sleeve, 19-centralizing body, 20-centralizing block, 21-rotating ring seat, 22-rotating ring retaining cap, 23-central tube, 24-lower connector, 25-stepped retaining sleeve, 26-locking sleeve, 27-bow-shaped centralizing body, 28-spring, 29-rotating ring and 30-connecting sleeve.

Detailed Description

To further disclose the technical scheme of the invention, the following detailed description is made by embodiments in combination with the attached drawings of the specification: as shown in fig. 1 and 2, a seat seal suspension pressure testing device comprises a coupling 1, a seal cup 2, a short joint 3, a horn coupling 4, an upper joint short joint 5, an upper joint 6, an anchor retaining sleeve 7, a return spring 8, an upper anchor retaining sleeve 9, an upper dovetail anchor tile 10, an upper anchor cone 11, an upper connecting block 12, an upper connecting sleeve 13, a lower anchor cone 14, a lower dovetail anchor tile 15, a lower connecting block 16, a lower connecting sleeve 17, a top sleeve 18, a centralizing body 19, a centralizing block 20, a swivel seat 21, a swivel retaining cap 22, a central tube 23, a lower joint 24, a stepped retaining sleeve 25, a locking sleeve 26, an arched centralizing body 27, a spring 28, a swivel 29 and a connecting sleeve 30, and is characterized in that the coupling is in threaded connection with the seal cup through the short joint and the horn coupling, the horn coupling is in threaded connection with the upper joint through the upper joint short joint and the anchor retaining sleeve, the spring clamping sleeve on the anchoring blocking sleeve is connected with one end of a reset spring, the other end of the reset spring is connected with the spring clamping sleeve on the upper anchoring blocking sleeve, an upper anchoring cone is arranged on the upper anchoring blocking sleeve, an upper dovetail anchor tile is matched with the upper anchoring cone, the upper dovetail anchor tile is fixed on the upper portion of the upper connecting sleeve through an upper connecting block, a lower anchoring cone is arranged on the lower portion of the upper connecting sleeve, a lower dovetail anchor tile is matched with the lower anchoring cone, the lower portion of the lower dovetail anchor tile is connected with the upper portion of the lower connecting sleeve through a lower connecting block, a stepped blocking sleeve with inward steps is arranged in the lower connecting sleeve, a lock sleeve with a rolling ball arranged on the inner step of the stepped blocking sleeve is arranged on the inner step of the stepped blocking sleeve, the inner periphery of the lock sleeve is movably matched with the lower anchoring cone, a centralizer with a jacking sleeve is arranged on the upper portion of the stepped blocking sleeve, and the centralizer is sleeved on a central tube; when the seat seal suspension pressure test device is set, the centralizer is stopped at the original position, the central tube moves downwards, the top sleeve pushes the stepped retaining sleeve to move upwards, the lock sleeve and the stepped retaining sleeve simultaneously slide upwards, the lower dovetail anchor tile and the lock sleeve push upwards, the lower anchoring cone drives the upper connecting sleeve to slide upwards, the upper connecting sleeve drives the upper dovetail anchor tile to slide upwards, and the seat seal suspension pressure test device is set on the sleeve; the sealing rubber cup is sealed with the sleeve, and from the sleeve water injection, leakage or pressure relief change sealer or well head are tried to this section sleeve pipe of well head to the sealing cup.

The operation process of the setting suspension pressure testing device comprises the steps of firstly connecting an oil pipe or an oil pipe short section with a preset length with the tool, then connecting the tool with a pipe column in a well, lowering the tool to a preset depth, lifting the pipe column for 0.8 m, then lowering the pipe column in the well, enabling a centering body to be on a long track, sitting and clamping the centering body on the inner wall of a casing, enabling a central pipe of the tool to continuously descend, enabling a jacking sleeve 18 of the centering body to prop against a lock sleeve when the central pipe reaches a certain position, pushing a lower connecting sheath 17 to continuously ascend, then propping against a lower dovetail anchor tile 15 to ascend, pushing a lower anchoring cone 14 and a lower connecting sheath 17 and an upper connecting sheath 13 connected with the lower anchoring cone to ascend when the upper dovetail anchor tile 13 is contacted and clamped with the inner wall of the casing and is not clamped, enabling the two sets of dovetail anchor tiles to be maximally propped and clamped on the inner wall of the casing through a transition spring, and (5) realizing setting. When different types of well mouths need to be replaced and damaged casing pipe nipples need to be replaced, the pressure test is carried out through clean water for the casing pipe, and whether the section from the blowout preventer to the lower part of the well mouth casing pipe nipple is punctured or not is mainly observed. If the blowout preventer has a puncture, the blowout preventer must be rectified and replaced, and the casing pipe nipple has a puncture, which must be replaced, because the load of the pipe column in the whole well is about 15-50 tons generally, the pipe column is centralized on the device, and the replacement of the wellhead or the casing pipe nipple is safe, easy, simple and convenient as the pipe column is taken out of the well for operation. When the technical requirement does not need pressure testing to detect, the individual layer leather cup device of this instrument is unloaded, connect with oil pipe or predetermined length's oil pipe nipple joint, operating procedure is same as above, sit and seal and hang the back in the cover pipe, if oil pipe or oil pipe nipple joint overlength that reserve on the well head are inconvenient when replacing the well head operation, can unload oil pipe or oil pipe nipple joint back-off from the horn coupling department of this device, wait to replace the well head or to replace the cover pipe nipple joint after, oil pipe or oil pipe nipple joint down again, the lock joint is tight, structure of horn coupling is big-end-up, so connect in the lock joint very easily, then go up the interior tubular column of well, at this moment the upper and lower forked tail anchor tile of this device sitting and sealing withdraws the original state under the exogenic action, play this instrument and interior tubular column, accomplish this process operation.