CN213597910U - Pressurized type tubular column internal blowout prevention valve rush-installation tool locked by hydraulic pressure - Google Patents

Abstract

The utility model provides an utilize interior blowout control valve of pressurization formula tubular column of hydraulic pressure locking to rob outfit instrument, including last card mechanism, lower card mechanism, rope and first, second hydraulic pressure locking mechanism. The upper clamping mechanism comprises an upper clamping body, a lifting short section and an axial bearing, wherein the upper clamping body is connected with the lifting short section through the axial bearing, and the lifting short section is connected with the blowout prevention valve; the lower clamping mechanism is positioned below the upper clamping mechanism and comprises a lower clamping body sleeved on the pipe column and pulley assemblies connected to two sides of the lower clamping body; the middle point of the rope is positioned on the upper clamp body, two ends of the rope are respectively connected with the upper clamp body, and the rope between the two ends and the middle point is wound in the corresponding pulleys; first and second hydraulic locking mechanisms are mounted in the upper card body and are capable of applying a variable locking force to the cable between the intermediate point and the corresponding pulley assembly via hydraulic pressure. The utility model discloses light and handy nimble, the locking force control range of rope is big, and the success rate of the well head operation of robbing the dress is higher.

Description

Pressurized type tubular column internal blowout prevention valve rush-installation tool locked by hydraulic pressure

Technical Field

The utility model relates to an oil gas well pressure control equipment field, particularly, relate to an utilize in pressurization formula tubular column of hydraulic pressure locking prevent that blowtorch snatchs dress instrument.

Background

In the process of drilling, because the position and the reserve of an underground oil and gas reservoir layer cannot be completely mastered on the ground, in the process of implementing drilling engineering, if a sudden high-pressure reservoir layer is met, but the pressure of a wellbore liquid column cannot balance the formation pressure, overflow and well kick can occur, if the overflow and well kick are not properly treated or cannot be treated, serious well blowout accidents can be caused, and even serious damage to equipment and personnel can be caused. In the initial stage of overflow or well kick, or when the well head blowout potential is weak, in order to avoid more serious well kick or well kick, on the premise that field operators can be close to the well head, simple tools can be adopted to successfully rush-install the internal blowout prevention tool of the pipe column through actions of lifting, pressing, screwing, buckling and the like. However, if the blowout potential of the wellhead is large, even if an operator can get close to the wellhead, the blowout prevention tool in the pipe column can be continuously impacted by fluid in the well, so that the operator cannot successfully complete pressurization rush installation, and the serious situation that the blowout is out of control can be caused.

At present, no special and portable pressurized blowout prevention tool in the tubular column is installed in the prior art, so that once the large well kick or blowout occurs, the periphery of the wellhead is in a serious dangerous state due to large underground pressure, if the well rush installation is not completed in time or successfully, serious disastrous events such as out-of-control well kick or fire can be caused, and the pollution to the surrounding environment is also serious.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one of the above-mentioned not enough of prior art existence. For example, one of the objectives of the present invention is to provide a rush-installing tool for an internal blowout prevention valve in a pipe string suitable for drilling and workover operations in oil and gas fields, so as to complete the rush-installing work in time, thereby preventing catastrophic events such as serious blowout accidents or fire.

In order to achieve the purpose, the utility model provides an utilize interior blowout control valve of pressurization formula tubular column of hydraulic pressure locking to rob outfit instrument can include card mechanism, lower card mechanism, rope, first hydraulic pressure locking mechanism and second hydraulic pressure locking mechanism. Go up card mechanism and include card body, axial bearing and lift nipple joint. The upper clamping body is provided with a first through axial cavity, the axial bearing is installed in the first axial cavity and provided with a second axial cavity, the lifting short section is installed in the second axial cavity, and the lower end of the lifting short section can be connected with the blowout prevention valve. The lower clamping mechanism is positioned below the upper clamping mechanism and comprises a lower clamping body, a first pulley assembly and a second pulley assembly. Wherein, lower calorie of body has the third axial cavity that link up, and the shaft of tubular column can pass third axial cavity, and first loose pulley assembly and second loose pulley assembly distribute in the both sides of third axial cavity axis, and all include pulley holder and pulley, and the pulley holder can with lower calorie of body coupling, and the pulley setting is on the pulley holder and the pulley can be at vertical in-plane rotation. The middle point of the rope is positioned above the upper card body. One end of the rope is connected with the upper clamping body positioned on one side of the axis of the third axial cavity, and the rope between the end part and the middle point is wound on the pulley in the first pulley assembly. The other end of the rope is connected with the upper clamping body positioned on the other side of the axis of the third axial cavity, and the rope between the end and the middle point is wound on the pulley in the second pulley assembly. The middle section of the rope can enable the upper card body to move downwards under the action of tension. The first hydraulic locking mechanism is arranged in the upper clamp body and positioned above the first pulley assembly, and can apply variable locking force to a rope between the middle point and the first pulley assembly through hydraulic pressure; the second hydraulic locking mechanism is arranged in the upper clamp body and positioned above the second pulley assembly, and can apply variable locking force to the rope between the middle point and the second pulley assembly through hydraulic pressure.

In order to better realize the present invention, further, the first, second and third axial cavities may be coaxial.

In order to better realize the utility model discloses, further, above-mentioned first axial cavity can be including the last cavity and the lower cavity that are linked together, wherein, the radial dimension of going up the cavity is greater than the radial dimension of cavity down, and axial bearing installs in last cavity and the cavity wall of next-door neighbour's last cavity.

In order to better realize the utility model discloses, further, the subassembly of card mechanism still can include first mounting and second mounting on the aforesaid, goes up to block still to be provided with on the body and holds the first vertical through-hole and the vertical through-hole of second of rope end, and first, second mounting can be fixed respectively in first, the vertical through-hole of second with the rope end of going up to block the body and connecting.

In order to better realize the utility model discloses, further, above-mentioned lower calorie of mechanism still can include two pivots and two can dismantle the connecting piece, can dismantle connecting piece and pivot can with first loose pulley assembly, second loose pulley assembly respectively with block this body coupling down, and loose pulley assembly and block the body down and can use the pivot to rotate in vertical plane as the center.

In order to better realize the utility model discloses, further, still can seted up on the above-mentioned card body: the third vertical through hole is located above the first pulley assembly, the fourth vertical through hole is located above the second pulley assembly, the rope between the middle point and the first pulley assembly penetrates through the third vertical through hole, and the rope between the middle point and the second pulley assembly penetrates through the fourth vertical through hole.

In order to better realize the utility model discloses, further, still can seted up on the above-mentioned card body: the first transverse adjusting hole is positioned above the first pulley assembly, and the second transverse adjusting hole is positioned above the second pulley assembly, the first transverse adjusting hole forms an opening on one side surface of the upper clamp body and the hole wall of the third vertical through hole respectively, and the second transverse adjusting hole forms an opening on the other side surface of the upper clamp body and the hole wall of the fourth vertical through hole respectively;

the first hydraulic locking mechanism is arranged in the first transverse adjusting hole and can comprise a first rope locking block, a first boosting piston, a first elastic element and a first detachable adjusting piece which are sequentially arranged from inside to outside, wherein the first rope locking block is close to or in contact with a rope in the third vertical through hole, and pressure oil is enclosed between the first rope locking block and the first boosting piston;

the second hydraulic locking mechanism is installed in the second transverse adjusting hole and can comprise a second rope locking block, a second boosting piston, a second elastic element and a second detachable adjusting piece which are sequentially arranged from inside to outside, wherein the second rope locking block is close to or in contact with a rope in the fourth vertical through hole, and pressure oil is enclosed between the second rope locking block and the second boosting piston.

In order to better realize the utility model, furthermore, the first hydraulic locking mechanism may further comprise a first transverse boosting cylinder, and the first rope locking block, the first boosting piston, the first elastic element, the first detachable adjusting part, and the pressure oil trapped between the first rope locking block and the first boosting piston are all arranged in the first transverse boosting cylinder;

the second hydraulic locking mechanism may further include a second transverse force-increasing cylinder, and the second cable locking block, the second force-increasing piston, the second elastic element, the second detachable adjusting member, and the pressure oil trapped between the second cable locking block and the second force-increasing piston are all disposed in the second transverse force-increasing cylinder.

In order to better realize the utility model, furthermore, one side of the first rope locking block can be provided with a first containing cavity and a first flow passage arranged along the axial direction of the first containing cavity, the lower end part of the first force-increasing piston is arranged in the first flow passage and is close to the inner wall surface of the first flow passage, and a first sealing element is arranged between the first force-increasing piston and the inner wall of the first flow passage;

one side of the second rope locking block can be provided with a second containing cavity and a second flow passage arranged along the axial direction of the second containing cavity, the lower end part of the second boosting piston is arranged in the second flow passage and is close to the inner wall surface of the second flow passage, and a second sealing element is arranged between the second boosting piston and the inner wall of the second flow passage.

In order to better realize the utility model discloses, furtherly, the blowout prevention valve is robbed and is adorned instrument and still can include fixed establishment in the above-mentioned tubular column, and under the circumstances that the shaft of tubular column can pass the third axial cavity, fixed establishment can make lower card body and tubular column fixed connection.

In order to realize better the utility model discloses, further, the lower extreme of above-mentioned promotion nipple joint can be provided with prevent spouting valve assorted external screw thread.

Compared with the prior art, the beneficial effects and advantages of the utility model are that: the utility model discloses a rope is carried the pressurized mode and is prevented that the blowout valve forces the pressurization downwards and dock with the tubular column, even there is strong fluid blowout in the tubular column, the utility model discloses also can come to be close to the tubular column from the position that well head pressure is lower through the mode of rotatory pivot, still can realize the butt joint, solved the problem that operating personnel can't successfully pressurize the blowout prevention instrument of snatching into the tubular column under the well kick or blowout situation; just the utility model discloses a hydraulic pressure reinforcement formula locking design can conveniently adjust the distance of card and lower card and the locking force of rope. The tool is light and flexible, the locking force adjusting range of the rope is large, the well mouth installing efficiency and success rate can be improved, and the occurrence of out-of-control blowout accidents is reduced.

Drawings

Fig. 1 shows a schematic diagram of an exemplary embodiment of the pressurized type tubular column internal blowout control rush-installing tool utilizing hydraulic locking of the invention.

Fig. 2 shows the utility model discloses an utilize the local enlarged schematic diagram of hydraulic pressure locking device in the pressurization formula tubular column internal blowout prevention valve of hydraulic pressure locking rob dress instrument.

The reference numerals are explained below:

1-rope, 2-fixing piece, 3-upper clamping body, 4-lifting short section, 5-axial bearing, 6-rope locking block, 7-boosting piston, 8-elastic element, 9-detachable adjusting piece, 10-transverse boosting cylinder barrel, 11-plug valve, 12-pipe column, 13-lower clamping body, 14-pulley seat, 15-pulley, 16-rotating shaft and 17-detachable connecting piece.

Detailed Description

Hereinafter, the pressurized type pipe string internal blowout preventer quick-installing tool with a locking structure according to the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments. The terms "first," "second," "third," and "fourth" herein are used merely for convenience of description and distinction and are not to be construed as indicating or implying relative importance or order of parts.

Example 1

In an exemplary embodiment of the present invention, the pressurized tubular string internal blowout control rush-fitting tool using hydraulic locking may include an upper locking mechanism, a lower locking mechanism, a rope, a first hydraulic locking mechanism, and a second hydraulic locking mechanism.

Specifically, go up card mechanism and include card body, axial bearing and lift nipple joint. The upper clamp body is provided with a through first axial cavity, the first axial cavity comprises an upper cavity and a lower cavity which are communicated, and the radial size of the upper cavity is larger than that of the lower cavity. The axial bearing is mounted in the upper cavity of the first axial cavity and is closely adjacent to the cavity wall of the upper cavity, and the axial bearing is provided with a second axial cavity. The lifting short section is arranged in the second axial cavity, and the lower end of the lifting short section is provided with an outer diameter and an outer thread matched with the blowout prevention valve. For example, the blowout prevention valve can be a plug valve, the outer diameter of the lower end of the lifting short section is equal to the inner diameter of the upper end of the plug valve, and the lifting short section can be in threaded connection with the plug valve. The position of the plug valve can be fixed by the mode that the upper clamping body is connected with the axial bearing and the axial bearing is connected with the lifting short section, so that the butt joint of the plug valve and the pipe column is realized. Meanwhile, the axial bearing can drive the plug valve to rotate around the axis of the second axial cavity, so that the aim of screwing the plug valve and the pipe column is fulfilled. Also for example, the blow-out prevention valve may be a check valve, for example, an arrow check valve.

The lower clamping mechanism is positioned below the upper clamping mechanism and comprises a lower clamping body, a first pulley assembly and a second pulley assembly. The lower clamping body is provided with a through third axial cavity, and the column body of the tubular column can penetrate through the third axial cavity. The lower clamping body can be arranged below a coupling of the pipe column so as to prevent the lower clamping body from moving upwards to influence butt joint in the butt joint process. The first pulley assembly and the second pulley assembly are distributed on two sides of the axis of the third axial cavity and respectively comprise a pulley seat and a pulley. Two pulley holder symmetric connection block the both sides of body under, and the pulley setting is on the pulley holder and the pulley can be at vertical plane internal rotation.

The rope is arranged to be capable of connecting the upper clamping mechanism and the lower clamping mechanism and bearing the weight of the upper clamping mechanism. For example, the rope may be a wire rope, or a chain. The middle point of the rope is positioned above the upper clamping body, one end of the rope is connected with the upper clamping body positioned on one side of the axis of the third axial cavity, and the rope between the end part and the middle point is wound on the pulley in the first pulley assembly. The other end of the rope is connected with the upper clamping body positioned on the other side of the axis of the third axial cavity, and the rope between the end and the middle point is wound on the pulley in the second pulley assembly. The middle section of the rope can enable the upper card body to move downwards under the action of tension.

Two vertical through holes, namely a first vertical through hole and a second vertical through hole, can be formed in the upper clamp body. The two through holes are respectively arranged on two sides of the first axial cavity axis of the upper card body and used for accommodating two end parts of the rope. For example, the first vertical through hole may be disposed perpendicular to a position where the pulley seat of the first pulley assembly is connected to the lower clip body, and the second vertical through hole may be disposed perpendicular to a position where the pulley seat of the second pulley assembly is connected to the lower clip body, so as to ensure that the rope under the action of the pulling force drives the upper clip body to provide a ballast load downward in a vertical downward direction, that is, the upward clip body receives the largest pulling force of downward movement. The first vertical through hole can be further internally provided with a first fixing piece, and the second vertical through hole can be further internally provided with a second fixing piece for fixing the rope end of the rope in the through hole of the upper clamp body. For example, the fixing may be a press block, or a collar.

The upper clamp body can be further provided with two vertical through holes which are a third vertical through hole and a fourth vertical through hole respectively. The rope between the middle point and the first pulley assembly passes through the third vertical through hole, and the rope between the middle point and the second pulley assembly passes through the fourth vertical through hole. The two through holes are respectively positioned above the first pulley assembly and the second pulley assembly and are arranged outside the first vertical through hole and the second vertical through hole for fixing the trend of the rope. For example, the third and fourth vertical through holes may be disposed directly above the corresponding pulley assemblies, that is, the distance between the first vertical through hole and the third vertical through hole may be set to the diameter of the pulley in the first pulley assembly, and the distance between the second vertical through hole and the fourth vertical through hole may be set to the diameter of the pulley in the second pulley assembly.

In addition, still set up the first transverse adjustment hole that is located first loose pulley assembly top on the card body to and be located the second transverse adjustment hole of second loose pulley assembly top. The first transverse adjusting hole forms an opening on one side face of the upper clamp body and the hole wall of the third vertical through hole respectively, and the second transverse adjusting hole forms an opening on the other side face of the upper clamp body and the hole wall of the fourth vertical through hole respectively.

The first hydraulic locking mechanism is arranged in the upper clamp body and located above the first pulley assembly, and can apply variable locking force to the rope between the middle point and the first pulley assembly through hydraulic pressure. The first hydraulic locking mechanism is arranged in the first transverse adjusting hole and can comprise a first rope locking block, a first boosting piston, a first elastic element and a first detachable adjusting piece which are sequentially arranged from inside to outside. Here, from inside to outside means moving from a direction close to the first axial cavity axis to a direction away from the first axial cavity axis. The first rope locking block is close to or in contact with a rope in the third vertical through hole, pressure oil is trapped between the first rope locking block and the first boosting piston, and the first detachable adjusting piece can provide different acting forces for the first boosting piston by compressing the first elastic element so as to push the piston to generate hydraulic pressure and apply variable locking force to the rope between the middle point and the first pulley assembly.

Likewise, a second hydraulic locking mechanism is disposed in the upper card body and above the second sheave assembly, and the second hydraulic locking mechanism is capable of applying a variable locking force to the cable between the intermediate point and the second sheave assembly via hydraulic pressure. The second hydraulic locking mechanism is arranged in the second transverse adjusting hole and can comprise a second rope locking block, a second boosting piston, a second elastic element and a second detachable adjusting piece which are sequentially arranged from inside to outside. The second detachable adjusting piece can provide different acting forces for the second boosting piston by compressing the second elastic element, further pushes the piston to generate hydraulic pressure, and realizes that variable locking force is applied to the rope between the middle point and the second pulley assembly.

For example, the first and second elastic elements may be springs, and the first and second detachable adjusting members may be locking force adjusting bolts. One end of the first rope locking block is connected with the first force-increasing piston and is provided with a first containing cavity and a first flow passage which is axially arranged along the first containing cavity, wherein the radial size of the first flow passage is smaller than that of the first containing cavity, and pressure oil is stored in the first containing cavity. The other end of the first rope locking block is arranged in an opening formed in the hole wall of the third vertical through hole and close to the first transverse adjusting hole, and the rope penetrating through the first pulley assembly is locked or unlocked, so that the moving state of the upper clamp body is controlled. The upper end part of the first boosting piston is connected with the spring, and the lower end part of the first boosting piston is arranged in the first flow passage of the first rope locking block in a movable fit mode and is close to the inner wall surface of the flow passage. A first sealing element is arranged between the first boosting piston and the inner wall of the first flow passage and can play a role in preventing pressure oil from leaking and enhancing the hydraulic effect. For example, the seal may be a pressure and oil resistant rubber seal. The spring is arranged between the locking force adjusting bolt and the first boosting piston, namely one end of the spring is propped against the locking force adjusting bolt, and the other end of the spring is propped against the first boosting piston. The locking force adjusting bolt respectively passes through the opening formed by the first transverse adjusting hole and the side surface of the upper clamp body from outside to inside and is connected with the upper clamp body.

One end of the second rope locking block is connected with the second force-increasing piston and is provided with a second containing cavity and a second flow passage which is axially arranged along the second containing cavity, wherein the radial size of the second flow passage is smaller than that of the second containing cavity, and pressure oil is stored in the second containing cavity. The other end of the second rope locking block is closely arranged in an opening formed on the hole wall of the fourth vertical through hole of the second transverse adjusting hole. The upper end part of the second boosting piston is connected with the spring, and the lower end part of the second boosting piston is arranged in a second flow passage of the second rope locking block in a movable fit mode and is close to the inner wall surface of the flow passage. A second sealing element is arranged between the second boosting piston and the inner wall of the second flow passage. The springs are respectively arranged between the locking force adjusting bolt and the second boosting piston, namely one end of each spring is abutted against the locking force adjusting bolt, and the other end of each spring is abutted against the second boosting piston. The locking force adjusting bolt passes through the opening formed by the second transverse adjusting hole and the other side surface of the upper clamp body from outside to inside and is connected with the upper clamp body.

The connecting depth of the locking force adjusting bolt in the upper clamp body is changed, the spring can be compressed to generate pressure, and then the first boosting piston and the second boosting piston are pushed to inwards extrude pressure oil in the containing cavity along the inner wall of the flow passage. The first rope locking block and the second rope locking block can be respectively contacted with the ropes in the third through hole and the fourth through hole under the extrusion of the pressure of pressure oil and generate locking friction force, so that when the friction force for locking the ropes is greater than the sum of the weight of the upper clamp body connected with the ropes and the weight of the blowout prevention valve, the upper clamp body and the blowout prevention valve can be fixed at a preset height. If the impact acting force on the boosting piston is too large due to the fact that the rotation angle of the detachable adjusting piece is too large, the spring can play a buffering role, the boosting piston is protected from being damaged, and the service life is prolonged. And the boosting output between the boosting piston and the pressure oil is stable, and the adjusting range is large, so that the fitting tool is high in applicability and not easy to damage.

The first hydraulic locking mechanism may further include a first transverse force cylinder in which the first cable lock block, the first force piston, the first resilient member (e.g., a spring), the first removable adjuster (e.g., a locking force adjustment bolt), and pressurized oil trapped between the first cable lock block and the first force piston are disposed. The second hydraulic locking mechanism may further include a second transverse force cylinder in which the second cable locking block, the second force piston, the second elastic member (e.g., a spring), the second detachable adjuster (e.g., a locking force adjusting bolt), and the pressure oil trapped between the second cable locking block and the second force piston are disposed. And the inner wall surfaces of the first transverse boosting cylinder barrel and the second transverse boosting cylinder barrel are provided with threads which have certain lengths and are matched with the locking force adjusting bolt.

The first axial cavity of the upper clamp body, the second axial cavity of the axial bearing and the third axial cavity of the lower clamp body can be arranged to be coaxial, so that the blowout prevention valve can be vertically butted with a pipe column, and the accuracy of butt joint of the blowout prevention valve and the pipe column is improved.

Before the installation operation is carried out, the winch above the pipe column can be used for hooking the middle position of the rope above the upper clamp body, then the detachable adjusting pieces on the two sides of the upper clamp body are adjusted, the locking friction force generated by the rope locking block on the rope is larger than the sum of the weight of the upper clamp body and the weight of the blowout prevention valve through the pressure of the boosting piston and hydraulic oil, and therefore the blowout prevention valve is fixed at a preset height, and the fact that the lower end thread of the blowout prevention valve keeps a sufficient distance with the lower clamp body is guaranteed.

When a well kick or blowout occurs and the blowout prevention valve in the pipe column needs to be rush-installed, the winch above the pipe column can be used for hooking the middle position of the rope above the upper clamp body, and the lower clamp body is buckled on the pipe column. The rope is pulled upwards, and the lower clamping body is blocked by the coupling of the pipe column and cannot move upwards, so that when the pulling force reaches a preset value, the upper clamping body drives the lifting nipple and the blowout prevention valve to move downwards together to be in butt joint with the pipe column. In the process of moving the upper clamp body downwards, the axial bearing drives the blowout prevention valve to rotate around the axis of the second axial cavity, so that the aim of screwing the blowout prevention valve and the pipe column is fulfilled.

Example 2

In another exemplary embodiment of the present invention, the present exemplary embodiment may further include a fixing mechanism on the basis of all the structures of embodiment 1. Under the condition that the column body of the column can penetrate through the third axial cavity, the fixing mechanism can enable the lower clamping body to be fixedly connected with the column, and the lower clamping body is prevented from moving upwards.

Additionally, the exemplary embodiment may further include a lifting mechanism connectable to the intermediate section of the rope to provide an upward pulling force to the rope. For example, the lifting mechanism may be a winch.

Before the rush-mounting operation is carried out, a lifting tool can be used for hooking the rope, then the detachable adjusting pieces on the two sides of the upper clamp body are adjusted, the locking friction force generated by the rope locking block to the rope is slightly larger than the total weight of the upper clamp body and the blowout prevention valve through the pressure of the boosting piston and hydraulic oil, so that the blowout prevention valve is fixed at a preset height, and the lower end of the blowout prevention valve is ensured to keep a sufficient distance with the lower clamp body.

When a well kick or blowout occurs and the blowout prevention valve in the tubular column needs to be rush-mounted, the lifting tool can be used for moving the rush-mounted tool to the upper part of the tubular column, and the lower clamping body is buckled on the tubular column. The rope is pulled upwards, and the lower clamping body is blocked by the fixing mechanism of the pipe column and cannot move upwards, so that when the pulling force reaches a preset value, the upper clamping body drives the lifting short section and the blowout prevention valve to move downwards together to be in butt joint with the pipe column. In the process of moving the upper clamp body downwards, the axial bearing drives the blowout prevention valve to rotate around the axis of the second axial cavity, so that the aim of screwing the blowout prevention valve and the pipe column is fulfilled.

Example 3

Fig. 1 shows a schematic diagram of an exemplary embodiment of a pressurized type pipe string internal blowout control rush-installing tool with a locking structure according to the present invention. Fig. 2 shows the utility model discloses an utilize the local enlarged schematic diagram of hydraulic pressure locking device in the pressurization formula tubular column internal blowout prevention valve of hydraulic pressure locking rob dress instrument.

As shown in fig. 1 and 2, in another exemplary embodiment of the present invention, the pressurized type blowout preventer rush-fitting tool in pipe string using hydraulic locking may include a rope 1, a fixing member 2, an upper clamp body 3, a lifting nipple 4, an axial bearing 5, a rope locking block 6, a force-increasing piston 7, an elastic element 8, a detachable adjusting member 9, a transverse force-increasing cylinder 10, a plug valve 11, a pipe string 12, a lower clamp body 13, a pulley seat 14, a pulley 15, a rotating shaft 16, and a detachable connecting member 17.

That is, the lower clamping mechanism in the present exemplary embodiment may further include the rotating shaft 16 and the detachable connection member 17 on the basis of having all the structures of embodiments 1 or 2.

The number of shafts 16 and detachable connections 17 may correspond one-to-one, i.e., two, to the number of sheave assemblies. The detachable connecting piece 17 and the rotating shaft 16 can connect the pulley bases of the first pulley assembly and the second pulley assembly with the lower clamp body 13 respectively, so that the lower clamp body 13, the pulley bases 14 and the pulleys 15 can rotate in a vertical plane by taking the rotating shaft 16 as a center. For example, the detachable connection may be a connection bolt. Here, the lower chuck body 13 may be provided in two movable parts, one part being a middle part for fixing the pipe string 12, and the other part being wings capable of rotating together with the pulley holder 14 and the pulley 15. When the well mouth is sprayed with a great potential and the plug valve 11 is vertically butted with the pipe column 12 with great difficulty, the direction of the pulling force of the winch for hooking the rope 1 can be changed, the rush-mounting tool is rotated to a preset angle through the rotating shaft 16, at the moment, the plug valve 11 can be close to the pipe column 12 from the side and carry out the rush-mounting work, so that the direct impact of fluid in a well on the pipe column to the blowout prevention tool is avoided, and the use safety and the success rate of the rush-mounting well mouth operation are improved.

The blowout prevention valve in the pipe column in the exemplary embodiment can be pre-installed on the pipe column 12, when normal oil extraction or gas production work is carried out, a lifting tool above the pipe column 12 can be used, the blowout prevention valve in the pipe column is rush-installed to rotate to the position near the idle ground, and normal production work of an oil and gas well is avoided being influenced.

When a well kick or blowout occurs and the blowout prevention valve in the pipe column needs to be rush-mounted, the lifting tool above the pipe column 12 can be used for lifting the blowout prevention valve rush-mounted tool in the pipe column and rotating to the position near the pipe column 12. Before operation, a lifting tool is used for hooking the rope, then the detachable adjusting pieces 9 on the two sides of the upper clamping body 3 are adjusted, the locking friction force of the rope locking block 6 on the rope 1 is slightly larger than the sum of the weight of the upper clamping body 3 and the weight of the plug valve 11 through the pressure of the boosting piston 7 and hydraulic oil, and therefore the plug valve 11 is fixed at a preset height, and the fact that the lower end thread of the plug valve 11 keeps a sufficient distance with the lower clamping body 13 is guaranteed. After the preset height of the plug valve 11 is set, the rope 1 is pulled upwards by the winch, and the lower clamping body 13 is blocked by the fixing mechanism of the pipe column and cannot move upwards, so that when the pulling force reaches the preset value, the upper clamping body 3 drives the lifting short section 4 and the plug valve 11 to move downwards together to be in butt joint with the pipe column 12. In the process of moving the upper clamping body 3 downwards, the axial bearing 5 drives the plug valve 11 to rotate around the axis of the second axial cavity, so that the purpose of screwing the plug valve 11 and the pipe column 12 is achieved. If the well mouth spraying potential is large in the butt joint process, the fluid in the well impacts the blowout prevention tool in the pipe column to cause that the plug valve 11 and the pipe column 12 cannot be vertically butted, the rotating shaft 16 can rotate the blowout prevention rush installation tool in the pipe column to the inclined upper part of the pipe column 12, so that the plug valve 11 is close to the pipe column 12 from the position with the lower well mouth spraying potential, and the butt joint is smoothly completed.

In summary, the utility model adopts the rope lifting and pressurizing mode to force the blowout prevention valve to pressurize downwards and butt with the pipe column, thus effectively solving the problems that the operator can not approach and successfully complete the pressurization rob-fitting work when strong fluid is sprayed out in the pipe column; the utility model can realize the blowout prevention tool in the rotary pipe column by arranging the rotating shaft at the joint of the pulley seat and the lower clamp body, can effectively complete butt joint from the position with low wellhead blowout potential, and provides the success rate of wellhead rush-mounting operation; just the utility model discloses a hydraulic pressure reinforcement formula locking design, this hydraulic pressure locking device simple structure, low in manufacturing cost can realize quick adjustment blowout prevention valve and the distance of lower card and the locking force of rope, improves the well head and snatchs the dress operating efficiency. Compare with other clothes-wrecking tools, the utility model discloses it is light and handy nimble, the normal operating of other equipment is just not influenced in the operation of being convenient for, has better practicality.

Although the present invention has been described above in connection with exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.

Claims (10)

1. A pressurized type rush-installing tool for an internal blowout prevention valve of a pipe column, which is locked by hydraulic pressure, is characterized by comprising an upper clamping mechanism, a lower clamping mechanism, a rope, a first hydraulic locking mechanism and a second hydraulic locking mechanism, wherein,

the upper clamping mechanism comprises an upper clamping body, an axial bearing and a lifting short section, wherein the upper clamping body is provided with a through first axial cavity, the axial bearing is installed in the first axial cavity and is provided with a second axial cavity, the lifting short section is installed in the second axial cavity, and the lower end of the lifting short section can be connected with the blowout prevention valve;

the lower clamping mechanism is positioned below the upper clamping mechanism and comprises a lower clamping body, a first pulley assembly and a second pulley assembly, wherein the lower clamping body is provided with a through third axial cavity, a column body of the tubular column can penetrate through the third axial cavity, the first pulley assembly and the second pulley assembly are distributed on two sides of the axis of the third axial cavity and respectively comprise a pulley seat and a pulley, the pulley seat can be connected with the lower clamping body, the pulley is arranged on the pulley seat, and the pulley can rotate in a vertical plane;

the middle point of the rope is positioned above the upper clamp body, one end of the rope is connected with the upper clamp body positioned on one side of the axis of the third axial cavity, the rope between the end part and the middle point is wound on the pulley in the first pulley assembly, the other end of the rope is connected with the upper clamp body positioned on the other side of the axis of the third axial cavity, the rope between the end part and the middle point is wound on the pulley in the second pulley assembly, and the middle section of the rope can enable the upper clamp body to move towards the lower clamp body under the action of tension;

the first hydraulic locking mechanism is arranged in the upper clamp body and positioned above the first pulley assembly, and can apply variable locking force to the rope between the middle point and the first pulley assembly through hydraulic pressure; the second hydraulic locking mechanism is arranged in the upper clamp body and located above the second pulley assembly, and can apply variable locking force to the rope between the middle point and the second pulley assembly through hydraulic pressure.

2. The hydraulically locked pressurized blowout preventer tool-in-string installation tool according to claim 1, wherein the first, second and third axial cavities are coaxial.

3. The hydraulically locked pressurized blowout preventer tool-in-string blowout preventer of claim 1, wherein the first axial cavity comprises an upper cavity and a lower cavity in communication, wherein the upper cavity has a radial dimension greater than a radial dimension of the lower cavity, and wherein the axial bearing is mounted in the upper cavity proximate to a cavity wall of the upper cavity.

4. The pressurized type emergency installing tool for the internal blowout prevention valve of the tubular column locked by hydraulic pressure according to claim 1, wherein the assembly of the upper clamping mechanism further comprises a first fixing member and a second fixing member, the upper clamping body is further provided with a first vertical through hole and a second vertical through hole for accommodating the rope ends, and the first fixing member and the second fixing member can respectively fix the rope ends connected to the upper clamping body in the first vertical through hole and the second vertical through hole.

5. The pressurized type emergency installing tool for the internal blowout preventer locked by hydraulic pressure according to claim 1, wherein the lower clamping mechanism further comprises two rotating shafts and two detachable connecting members, the detachable connecting members and the rotating shafts can connect the first pulley assembly and the second pulley assembly with the lower clamping body respectively, and the pulley assemblies and the lower clamping body can rotate in a vertical plane by taking the rotating shafts as centers.

6. The pressurized type emergency installing tool for the internal blowout prevention valve of the tubular column locked by hydraulic pressure according to claim 1, wherein the upper clamp body is further provided with: the rope between the middle point and the first pulley assembly passes through the third vertical through hole, and the rope between the middle point and the second pulley assembly passes through the fourth vertical through hole.

7. The hydraulically locked pressurized rush-installing tool for the internal blowout preventer of a tubular column according to claim 6, wherein the upper clamp body is further provided with: the first transverse adjusting hole is positioned above the first pulley assembly, and the second transverse adjusting hole is positioned above the second pulley assembly, the first transverse adjusting hole forms an opening on one side surface of the upper clamp body and the hole wall of the third vertical through hole respectively, and the second transverse adjusting hole forms an opening on the other side surface of the upper clamp body and the hole wall of the fourth vertical through hole respectively;

the first hydraulic locking mechanism is arranged in the first transverse adjusting hole and comprises a first rope locking block, a first boosting piston, a first elastic element and a first detachable adjusting piece which are sequentially arranged from inside to outside, wherein the first rope locking block is close to or in contact with a rope in the third vertical through hole, and pressure oil is enclosed between the first rope locking block and the first boosting piston;

the second hydraulic locking mechanism is installed in the second transverse adjusting hole and comprises a second rope locking block, a second boosting piston, a second elastic element and a second detachable adjusting piece which are sequentially arranged from inside to outside, wherein the second rope locking block is close to or in contact with a rope in the fourth vertical through hole, and pressure oil is enclosed between the second rope locking block and the second boosting piston.

8. The hydraulically-locked pressurized blowout preventer tool-in-string installation tool according to claim 7, wherein the first hydraulic locking mechanism further comprises a first transverse force-increasing cylinder, and the first rope locking block, the first force-increasing piston, the first elastic element, the first detachable adjusting member, and the pressure oil trapped between the first rope locking block and the first force-increasing piston are all disposed in the first transverse force-increasing cylinder;

the second hydraulic locking mechanism further comprises a second transverse boosting cylinder barrel, and the second rope locking block, the second boosting piston, the second elastic element, the second detachable adjusting piece and pressure oil trapped between the second rope locking block and the second boosting piston are all arranged in the second transverse boosting cylinder barrel.

9. The hydraulically-locked pressurized type emergency tool for the internal blowout preventer of the tubular column according to claim 8, wherein a first cavity and a first flow channel are axially arranged along the first cavity and are arranged at one side of the first rope locking block, the lower end of the first force-increasing piston is arranged in the first flow channel and is close to the inner wall surface of the first flow channel, and a first sealing element is arranged between the first force-increasing piston and the inner wall of the first flow channel;

a second containing cavity and a second flow passage axially arranged along the second containing cavity are arranged on one side of the second rope locking block, the lower end part of the second boosting piston is installed in the second flow passage and is close to the inner wall surface of the second flow passage, and a second sealing element is arranged between the second boosting piston and the inner wall of the second flow passage.

10. The hydraulically-locked pressurized blowout preventer tool in a tubular column according to claim 1, further comprising a fixing mechanism, wherein the fixing mechanism can fixedly connect the lower clamp body with the tubular column under the condition that the shaft of the tubular column can pass through the third axial cavity; the lower end of the lifting short section is provided with an external thread matched with the blowout prevention valve.

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