CN213392097U - Pressurized type tubular column internal blowout prevention valve rush-installation tool with locking mechanism - Google Patents

Abstract

The utility model provides a take locking mechanism's pressurization formula tubular column internal blowout prevention valve to rob outfit instrument, including last card mechanism, lower card mechanism, rope and first, second 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 lower part of 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; the first and second 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 sheave assembly, respectively. The utility model discloses it is light and handy convenient, even also can in time accomplish at the well head and robbe dress work when the trend is great, avoid taking place serious blowout out of control.

Description

Pressurized type tubular column internal blowout prevention valve rush-installation tool with locking mechanism

Technical Field

The utility model relates to an oil gas well pressure control equipment field, particularly, relate to a take locking mechanism's pressurization formula tubular column in 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 a take locking mechanism's pressurization formula tubular column internal blowout prevention valve to rob outfit instrument can include card mechanism, lower card mechanism, rope, first locking mechanical system and second 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 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. The first locking mechanisms are arranged in the upper card body and can apply variable locking force to the rope between the middle point and the first pulley component; a second locking mechanism is disposed in the upper card body and is capable of applying a variable locking force to the cable between the intermediate point and the second sheave assembly.

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 and still can be provided with the first vertical through-hole and the vertical through-hole of second that hold the rope end on the card body, and first, second mounting can be fixed the rope end of connecting on the card body respectively in first, the vertical through-hole of second.

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.

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 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.

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 locking mechanism can comprise a first rope locking block, a first elastic element and a first detachable adjusting piece which are sequentially arranged in the first transverse adjusting hole from inside to outside, wherein the first rope locking block is adjacent to or in contact with the rope in the third vertical through hole, and the first detachable adjusting piece can provide different acting forces for the first rope locking block by compressing the first elastic element, so that variable locking force can be applied to the rope between the middle point and the first pulley assembly;

above-mentioned second locking mechanism can include that the regulating part can be dismantled to second rope latch segment, second elastic element and the second that sets gradually in the second transverse adjustment hole from inside to outside, and wherein, the rope in the second rope latch segment is close to or the contact fourth vertical through-hole, and the regulating part can be dismantled through compression second elastic element to the second and can provide different effort to second rope latch segment, and then realize exerting changeable locking force to the rope between intermediate point and the second pulley assembly.

In order to better implement the present invention, further, the first and second elastic elements each include a spring; the first and second detachable adjusting members each include a locking force adjusting bolt.

In order to better realize the utility model discloses, further, above-mentioned dress instrument of robbing can include hoist mechanism, hoist mechanism can with the interlude of rope is connected to provide ascending pulling force.

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 an elastic component locking formula design can conveniently adjust the distance of card and lower card and the locking force of rope, and this instrument is light and handy nimble, can improve the well head and rob dress operating efficiency and success rate, reduces the emergence of blowout accident out of control.

Drawings

Fig. 1 shows a schematic structural diagram of a blowout preventer installation tool in a pressurized tubular column with a locking mechanism according to still another exemplary embodiment of the present invention.

The reference numerals are explained below:

the device comprises a rope 1, a fixing piece 2, an upper clamping body 3, a lifting short section 4, an axial bearing 5, a rope locking block 6, an elastic element 7, a detachable adjusting piece 8, a plug valve 9, a tubular column 10, a lower clamping body 11, a pulley seat 12, a pulley 13, a rotating shaft 14 and a detachable connecting piece 15.

Detailed Description

Hereinafter, the pressurized type pipe string internal blowout preventer quick-installing tool with a locking mechanism 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 preventer rush-fitting tool with a locking mechanism may include an upper locking mechanism, a lower locking mechanism, a rope, a first locking mechanism, and a second locking mechanism.

Specifically, go up the card mechanism and can include and go up 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 card mechanism is located below the upper card mechanism and may include a lower card body, a first sheave assembly, and a second sheave 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 holders can both block this body coupling with down, 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, the upper clamp body can be further provided with a first transverse adjusting hole located above the first pulley assembly and a second transverse adjusting hole located above the second pulley assembly. 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 locking mechanism is disposed in the upper card body and is capable of applying a variable locking force to the cable between the intermediate point and the first sheave assembly. The first locking mechanism comprises a first rope locking block, a first elastic element and a first detachable adjusting piece which are sequentially arranged in the first transverse adjusting hole 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. Wherein, rope in the first rope latch segment is close to or the contact third vertical through-hole, and first detachable adjusting part can provide different effort to first rope latch segment through compressing first elastic element, and then realizes exerting changeable locking force to the rope between intermediate point and the first pulley assembly.

Likewise, a second locking mechanism is disposed in the upper card body and is capable of applying a variable locking force to the cable between the intermediate point and the second sheave assembly. The second locking mechanism comprises a second rope locking block, a second elastic element and a second detachable adjusting piece which are sequentially arranged in the second transverse adjusting hole from inside to outside. Wherein, the rope in the second rope latch segment is close to or the contact fourth vertical through-hole, and the adjustment piece can be dismantled through the compression second elastic element to the second rope latch segment provides different effort, and then realizes exerting changeable locking force to the rope between intermediate 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. The first rope locking block may be disposed in an opening formed in the first lateral adjustment hole in the wall of the third vertical through hole. The second rope locking block may be disposed in an opening formed in a wall of the fourth vertical through hole of the second lateral adjustment hole in close proximity thereto. The spring sets up respectively between two locking force adjusting bolt and rope latch segment, and the spring is that one end supports and leans on locking force adjusting bolt promptly, and the other end supports and leans on the rope latch segment. The locking force adjusting bolt respectively passes through an opening formed by the first transverse adjusting hole and the side surface of the upper clamp body and an 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 first transverse adjusting hole and the second transverse adjusting hole of the upper clamp body are internally provided with threads with certain lengths and matched with the locking force adjusting bolt. Through changing the connecting depth of locking force adjusting bolt in last card body, can compression spring produce pressure, and then make first, second rope latch segment respectively with third, the downthehole rope contact of fourth through under the pressure effect and produce locking frictional force, when the frictional force of rope locking is greater than the weight sum of last card body and the blowout prevention valve of being connected with the rope, can fix last card body and blowout prevention valve at predetermined height. If the rotation angle of the locking force adjusting bolt is too large, so that the pressure on the rope locking block is too large, the spring can play a certain buffering role, the rope locking block is protected from being damaged, and the service life is prolonged.

Further, 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 middle position of a rope above the upper clamp body can be hooked by a winch above the pipe column, then the detachable adjusting pieces on the two sides of the upper clamp body are adjusted, so that the locking friction force generated by the rope locking block on the rope is slightly larger than the total weight of the upper clamp body and the blowout prevention valve, 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 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 present exemplary embodiment may further include a lifting mechanism connectable with the intermediate segment of the rope to provide an upward pulling force. For example, the lifting mechanism may be a winch.

Before the operation of robbing the outfit, can use the lifting means of tubular column top to catch on the rope, then adjust the dismantled regulating part of card body both sides, make the locking frictional force that the rope latch segment produced the rope slightly be greater than the weight sum of card body and blowout prevention valve on, thereby fix the blowout prevention valve at predetermined height, guarantee that blowout prevention valve lower extreme keeps sufficient distance with lower card body.

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 can be used for lifting the blowout prevention valve rush-mounted tool in the pipe column and buckling the lower clamping body on the pipe 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 yet another exemplary embodiment of a pressurized type blowout preventer quick-install tool with a locking mechanism in a tubular string according to the present invention.

As shown in fig. 1, in still another exemplary embodiment of the present invention, the pressurized self-resetting blowout prevention valve rush-installing tool in the pipe column 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, an elastic element 7, a detachable adjusting member 8, a plug valve 9, a pipe column 10, a lower clamp body 11, a pulley seat 12, a pulley 13, a rotating shaft 14 and a detachable connecting member 15.

That is, the lower clamping mechanism in the present exemplary embodiment may further include the rotating shaft 14 and the detachable connection member 15 on the basis of having all the structures of embodiments 1 or 2.

The number of shafts 14 and detachable connections 15 may correspond one-to-one, i.e., two, to the number of sheave assemblies. The detachable connecting piece 15 and the rotating shaft 14 can connect the pulley seat 12 of the first pulley assembly and the second pulley assembly with the lower clamp body 11 respectively, so that the lower clamp body 11, the pulley seat 12 and the pulley 13 can rotate in a vertical plane by taking the rotating shaft 14 as a center. For example, the detachable connection may be a connection bolt. Here, the lower chuck body 11 may be provided in two movable parts, one part is a middle part for fixing the pipe string 10, and the other part is two wings that can rotate together with the pulley holder 12 and the pulley 13. When the well mouth is sprayed with a great potential and the plug valve 9 is vertically butted with the pipe column 10 with great difficulty, the direction of the tensile 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 14, at the moment, the plug valve 9 can be close to the pipe column 10 from the side and carry out the rush-mounting work, so that the fluid in the well is prevented from directly impacting the blowout prevention tool in the pipe column, 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, when normal oil extraction or gas production work is carried out, the middle position of the rope 1 can be hooked by the lifting tool above the pipe column 10, the blowout prevention valve in the pipe column is rotated to the position near the idle ground, and the 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, a lifting tool above the pipe column 10 can be used, and the blowout prevention valve rush-mounted tool in the pipe column is lifted and rotated to be close to the pipe column 10. Before operation, a lifting tool is firstly used for hooking the rope 1, then the detachable adjusting pieces 8 on the two sides of the upper clamping body 3 are adjusted, so that the locking friction force of the rope locking block 6 on the rope 1 is slightly larger than the total weight of the upper clamping body 3 and the plug valve 9, the plug valve 9 is fixed at a preset height, and the lower end thread of the plug valve 9 is ensured to keep a sufficient distance from the lower clamping body 11. After the preset height of the plug valve 9 is set, the rope 1 is pulled upwards by the winch, and the lower clamping body 11 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 9 to move downwards to be in butt joint with the pipe column 10. In the process of moving the upper clamping body 3 downwards, the axial bearing 5 drives the plug valve 9 to rotate around the axis of the second axial cavity, so that the purpose of screwing the plug valve 9 and the pipe column 10 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 9 and the pipe column 10 cannot be vertically butted, the rotating shaft 14 can rotate the blowout prevention rush installation tool in the pipe column to the inclined upper part of the pipe column 10, so that the plug valve 9 is close to the pipe column 10 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 an elastic component locking formula design can conveniently adjust the locking force of the distance of blowout prevention valve and lower card and 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 tubular column internal blowout prevention valve rush-installing tool with a locking mechanism is characterized by comprising an upper clamping mechanism, a lower clamping mechanism, a rope, a first locking mechanism and a second 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 locking mechanisms are arranged in the upper card body and can apply variable locking force to the rope between the middle point and the first pulley assembly; the second locking mechanism is disposed in the upper card body and is capable of applying a variable locking force to the cable between the intermediate point and the second sheave assembly.

2. The pressurized type emergency installing tool for the internal blowout preventer of the tubular column with the locking mechanism according to claim 1, wherein the first, the second and the third axial cavities are coaxial.

3. The pressurized type emergency installing tool for the internal blowout preventer valve of the tubular column with the locking mechanism according to claim 1, wherein the first axial cavity comprises an upper cavity and a lower cavity which are communicated, wherein the radial dimension of the upper cavity is larger than that of the lower cavity, and the axial bearing is installed in the upper cavity and is close to the cavity wall of the upper cavity.

4. The pressurized type emergency installing tool for the internal blowout prevention valve of the tubular column with the locking mechanism 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 tubular column internal blowout preventer tool with the locking mechanism 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 with the rotating shafts as centers.

6. The pressurized type blowout preventer tool with the locking mechanism in the tubular column according to claim 1, further comprising a fixing mechanism, wherein the fixing mechanism enables the lower clamp body to be fixedly connected with the tubular column under the condition that the body of the tubular column can pass through the third axial cavity.

7. The pressurized type pipe column internal blowout prevention valve installing tool with the locking mechanism as claimed in claim 1, wherein the lower end of the lifting nipple is provided with an external thread matched with the blowout prevention valve.

8. The pressurized type emergency installing tool for the internal blowout prevention valve of the tubular column with the locking mechanism according to claim 1, wherein the upper clamp body is further provided with: 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.

9. The pressurized type emergency installing tool for the internal blowout prevention valve of the tubular column with the locking mechanism according to claim 8, 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 locking mechanism comprises a first rope locking block, a first elastic element and a first detachable adjusting piece which are sequentially arranged in the first transverse adjusting hole from inside to outside, wherein the first rope locking block is adjacent to or in contact with the rope in the third vertical through hole, and the first detachable adjusting piece can provide different acting forces for the first rope locking block by compressing the first elastic element, so that variable locking force can be applied to the rope between the middle point and the first pulley assembly;

the second locking mechanism comprises a second rope locking block, a second elastic element and a second detachable adjusting piece which are sequentially arranged in the second transverse adjusting hole from inside to outside, wherein the second rope locking block is adjacent to or in contact with a rope in the fourth vertical through hole, the second detachable adjusting piece can provide different acting forces for the second rope locking block through compressing the second elastic element, and then variable locking force is applied to the rope between the middle point and the second pulley assembly.

10. The pressurized type emergency installing tool for the internal blowout preventer valve of the tubular column with the locking mechanism according to claim 9, wherein the first elastic element and the second elastic element both comprise springs; the first detachable adjusting piece and the second detachable adjusting piece both comprise locking force adjusting bolts.

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