CN114320191A - Device for tripping on wellhead pipe column for snubbing operation - Google Patents

Device for tripping on wellhead pipe column for snubbing operation Download PDF

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Publication number
CN114320191A
CN114320191A CN202210243814.2A CN202210243814A CN114320191A CN 114320191 A CN114320191 A CN 114320191A CN 202210243814 A CN202210243814 A CN 202210243814A CN 114320191 A CN114320191 A CN 114320191A
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CN
China
Prior art keywords
clamping
hydraulic unit
clamp assembly
punching
platform
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210243814.2A
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Chinese (zh)
Inventor
覃芳
杨建�
缪云
董亮亮
张宇霖
罗伟
李成全
杨磊
王权
刘晓东
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Sichuan Shengnuo Oil And Gas Engineering Technology Service Co ltd
Southwest Petroleum University
Original Assignee
Sichuan Shengnuo Oil And Gas Engineering Technology Service Co ltd
Southwest Petroleum University
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Application filed by Sichuan Shengnuo Oil And Gas Engineering Technology Service Co ltd, Southwest Petroleum University filed Critical Sichuan Shengnuo Oil And Gas Engineering Technology Service Co ltd
Priority to CN202210243814.2A priority Critical patent/CN114320191A/en
Publication of CN114320191A publication Critical patent/CN114320191A/en
Withdrawn legal-status Critical Current

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Abstract

The invention belongs to the technical field of petroleum and natural gas drilling and workover equipment, and discloses a device for tripping a wellhead pipe string in snubbing serving, which comprises a spinner assembly, a punch wrench assembly and a clamping pliers assembly; the clamping jaw assembly comprises a pair of clamping jaw bodies which can approach and depart from each other; the punching and buckling clamp assembly comprises a first supporting seat and a pair of punching and buckling clamp bodies, wherein the first supporting seat is rotatably arranged, and the pair of punching and buckling clamp bodies can approach and depart from each other; the rotary buckling clamp assembly comprises a floating installation base capable of moving up and down and a pair of clamping arms capable of approaching to and departing from each other, the clamping arms are installed on the floating installation base, and friction wheels used for driving the upper pipe column to rotate are arranged on opposite surfaces of the two clamping arms. The screwing-unscrewing device has the characteristics of small volume, simple structure, low manufacturing and maintenance cost, easiness in popularization and the like, solves the problem of low working efficiency of a semi-automatic screwing-unscrewing mode of a manual power-applying tongs, and improves the operation safety of operators.

Description

Device for tripping on wellhead pipe column for snubbing operation
Technical Field
The invention belongs to the technical field of petroleum and natural gas drilling and workover equipment, and particularly relates to a wellhead tubular column shackling device for snubbing operation.
Background
In the operation devices such as snubbing lifting and oil pipe lowering, the power tongs are an important component and are the most used devices on site when the pipe is tripped out at present. The power tongs are hung on the derrick by a steel wire, a worker pushes the tongs to a wellhead working position when tripping is carried out, and the tongs are pushed back to a waiting position after the operation is finished.
A plurality of novel automatic screwing-on and unscrewing devices and patents appear in the current market, the structure of the automatic screwing-on and unscrewing device generally comprises three parts, a main clamp, a back clamp and a clamping slip are sequentially arranged from top to bottom, a guide rail which moves front and back and moves up and down is further arranged in the part, and the main clamp and the back clamp can move on the guide rail. The main tong and the back-up tong are both designed into U-shaped discs with openings, after the pipe column is in place, the U-shaped groove of the tong body moves to the position of the pipe column and is clamped, the clamping principle of the main tong and the back-up tong is consistent, and the main tong and the back-up tong drive the large gear through the motor and the rack to drive the tooth block to extend out and retract. The main tong and the back-up tong of a part of the upper shackle device do not have U-shaped openings, the whole device is fixedly arranged at a well head, the pipe column extends into the central channel of the device, and the outer ring gear drives the inner ring quarter gear to rotate to clamp and then drives the pipe column to rotate to fasten. The first device has the disadvantages of large volume, large occupied working space of a wellhead, inconvenient transportation and transfer, more parts, complex structure, high manufacturing cost and inconvenient maintenance; the first type and the second type of devices both adopt a mode of transmitting torque by gears, the output torque is high, the transmission is stable, but the manufacturing and replacement cost of the gears is high, and the independent replacement wastes time and labor; in addition, the iron roughneck which is generally adopted abroad at present is not popularized in China, and the complicated structure, high manufacturing cost and complicated maintenance procedures are difficult to popularize and use.
Disclosure of Invention
The invention aims to solve the problems that the power tongs are low in working efficiency, high in labor intensity and incapable of realizing automation, and the existing automatic screwing and unscrewing device is large in occupied space, complex in structure and high in manufacturing and maintenance cost to at least a certain extent. Therefore, the invention aims to provide a wellhead pipe string tripping device for snubbing operation.
The technical scheme adopted by the invention is as follows:
a device for tripping a wellhead pipe string in snubbing serving comprises a screwing clamp assembly, a punching clamp assembly and a clamping clamp assembly for clamping a lower pipe string;
the clamping jaw assembly comprises a pair of clamping jaw bodies which can approach and depart from each other;
the punching and buckling clamp assembly comprises a first supporting seat, a pair of punching and buckling clamp bodies and a torsion hydraulic unit, wherein the first supporting seat is rotatably arranged, the pair of punching and buckling clamp bodies can approach to and depart from each other, and the torsion hydraulic unit is used for pushing the first supporting seat to rotate;
the rotary buckling clamp assembly comprises a floating installation base capable of moving up and down and a pair of clamping arms capable of approaching to and departing from each other, the clamping arms are installed on the floating installation base, and friction wheels used for driving the upper pipe column to rotate are arranged on opposite surfaces of the two clamping arms.
Preferably, the unbolting well operation wellhead pipe column screwing-off device further comprises a base and a lifting platform, the clamping pincers assembly is fixedly installed on the base, the lifting platform can be installed on the base in a vertically moving mode, and the screwing-off pincers assembly and the punching-off pincers assembly are installed on the lifting platform.
Preferably, the base is provided with a lifting hydraulic unit and a guide pillar, the lifting platform is sleeved on the guide pillar in a sliding manner, and the lifting platform is connected with a movable end of the lifting hydraulic unit.
Preferably, the lifting platform comprises an upper platform and a lower platform, the upper platform and the lower platform are connected through a connecting sleeve, and the connecting sleeve is sleeved on the guide pillar in a sliding manner; the rotary buckling clamp assembly is arranged on the upper layer platform, the punching buckling clamp assembly is arranged between the upper layer platform and the lower layer platform, and the first supporting seat is rotatably connected with the upper layer platform and the lower layer platform.
Preferably, the clamping jaw assembly further comprises a second support seat and a second thrust hydraulic unit; the second thrust hydraulic units are symmetrically arranged on the side wall of the supporting seat; the clamping pincer body is arranged at the movable end of the second thrust hydraulic unit.
Preferably, the punching pliers assembly further comprises a first thrust hydraulic unit, a torsion support rod and a connecting rod; the first thrust hydraulic units are symmetrically arranged on the side wall of the first supporting seat; the punching buckle clamp body is arranged at the movable end of the first thrust hydraulic unit; the connecting rod is arranged on the first supporting seat, the fixed end of the torsion hydraulic unit is connected with the torsion supporting rod, and the movable end of the torsion hydraulic unit is connected with the connecting rod.
Preferably, the spinner clamp assembly further comprises a fixed shaft, and the floating mounting seat and the clamping arm are movably sleeved on the fixed shaft; the upper end of the floating installation seat is provided with a floating spring, the lower end of the floating installation seat is connected with the movable end of the floating hydraulic unit, the fixed shaft is provided with a pressing plate, and the upper end of the floating spring is connected with the pressing plate.
Preferably, the middle part of the clamping arm is rotatably provided with a rack, the friction wheel is arranged on the rack, and the rack is provided with a motor for driving the friction wheel; the tip of pressing from both sides tight arm links to each other with the expansion end of third thrust hydraulic unit, and the stiff end of two third thrust hydraulic units passes through the connecting axle and links to each other fixedly, and the turning block is worn to locate in the connecting axle activity, and the turning block slip cover is established on rotatory centering rod, and rotatory centering rod rotates to be installed on the elevating platform and rotatory centering rod is located the intermediate position of two tight arms of clamp.
Preferably, a mud cover is arranged on the base, the mud cover surrounds the peripheries of the screwing clamp assembly, the punching clamp assembly and the clamping clamp assembly, and a sewage draining outlet is formed in the base.
Preferably, the base comprises a mounting seat, a slurry baffle disc and a mounting flange which are arranged from top to bottom; the clamping caliper assembly is arranged on the mounting seat, the slurry cover is arranged on the slurry baffle disc, reinforcing ribs are arranged on the slurry baffle disc, and through circulation holes are formed in the reinforcing ribs; the drain outlet is arranged on the slurry baffle disc.
The invention has the beneficial effects that:
the device for tripping the wellhead tubular column in the snubbing operation has the characteristics of small volume, simple structure and low manufacturing and maintenance cost, adopts a hydraulic direct-pushing type clamping and motor to drive a friction wheel to rotate in a tripping mode, replaces a gear power system with a power system with lower cost and simpler structure, is more reasonable in wellhead operation space utilization, and is more economical in manufacturing cost and later maintenance. Compared with the conventional screwing and unscrewing mode of the power tongs, the power tongs can effectively improve the working efficiency, reduce the working strength of workers and improve the operation safety; compared with other upper shackle devices at the present stage, the upper shackle device has smaller volume and simpler structure, and is beneficial to the utilization of platform space on the well.
Drawings
FIG. 1 is a schematic structural diagram of a tripping device on a wellhead pipe string for snubbing serving.
FIG. 2 is a front half-sectional view of the break-out apparatus on the wellhead string for snubbing serving operations of the present invention.
FIG. 3 is a side half-sectional view of the break-out apparatus on the wellhead string for snubbing serving operations of the present invention.
FIG. 4 is a schematic illustration of the unbolting wellhead string break-out apparatus without the mud mask of the present invention.
FIG. 5a is a schematic diagram of a first step of the unbolting operation wellhead string make-up device of the present invention.
FIG. 5b is a schematic diagram of the second step of the invention when the wellhead string tripping device is tripped up.
FIG. 5c is a schematic diagram of the third step of the unbolting operation wellhead string make-up device of the present invention.
FIG. 5d is a schematic diagram of the fourth step of the unbolting operation wellhead string make-up device of the invention.
FIG. 6a is a schematic diagram of the first step of the unbolting device on the wellhead string for the snubbing serving.
FIG. 6b is a schematic diagram of the second step of the unbolting operation wellhead string tripping device of the invention.
FIG. 6c is a schematic diagram of the third step of the unbolting device on the wellhead string for snubbing serving according to the invention.
FIG. 6d is the schematic diagram of the fourth step of the unbolting operation wellhead string tripping device of the invention.
In the figure: the pipe column 1, the turnbuckle clamp assembly 2, the protective baffle 201, the motor 202, the frame 203, the supporting shaft 204, the friction wheel 205, the pressure plate 206, the floating spring 207, the clamping arm 208, the floating mounting seat 209, the fixed shaft 210, the floating hydraulic unit 211, the connecting rod 212, the third thrust hydraulic unit 213, the rotating block 214, the rotating centering rod 215, the punching buckle clamp assembly 3, the first supporting seat 301, the first thrust hydraulic unit 302, the connecting rod 303 and the torsion hydraulic unit 304, the hydraulic lifting device comprises a punching clamp body 305, a torsion supporting rod 306, a lifting platform 4, a lifting hydraulic unit 401, an upper platform 402, a lower platform 403, a guide post 404, a connecting sleeve 405, a clamping clamp assembly 5, a second supporting seat 501, a second thrust hydraulic unit 502, a clamping clamp body 503, a base 6, a mounting seat 601, a slurry baffle disc 602, a mounting flange 603, a circulation hole 604, a reinforcing rib 605, a sewage discharge port 606, a slurry cover 7 and an observation port 701.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is conventionally understood by those skilled in the art, is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or the element which is indicated must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the present invention and drawings in the embodiments are understood in specific cases, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious for those skilled in the art that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments.
The invention is further described with reference to the following figures and specific examples.
As shown in fig. 1 to 4, a pipe string 1 includes an upper pipe string and a lower pipe string, and the pipe string tripping device for snubbing serving as a wellhead of the embodiment mainly includes a spinner assembly 2, a punch wrench assembly 3 and a clamping wrench assembly 5. The clamping jaw assembly 5 only clamps the lower pipe column, and the screwing jaw assembly 2 and the punching jaw assembly 3 can clamp the upper pipe column and can drive the upper pipe column to rotate, so that the screwing and unscrewing actions are completed; in this embodiment, the spinner clamp assembly 2, the punching clamp assembly 3 and the clamping clamp assembly 5 are coaxially arranged, and the spinner clamp assembly 2, the punching clamp assembly 3 and the clamping clamp assembly 5 are sequentially arranged from top to bottom.
The unbolting well operation wellhead pipe column screwing-off device further comprises a base 6 and a lifting platform 4, wherein the clamping pliers component 5 is fixedly installed on the base 6, the lifting platform 4 can be installed on the base 6 in a vertical moving mode, and the screwing pliers component 2 and the punching pliers component 3 are installed on the lifting platform 4. The middle part of the base 6 is provided with a through hole, and the pipe column passes through the through hole.
The base 6 is provided with a lifting hydraulic unit 401 and a guide post 404, the lifting platform 4 is slidably sleeved on the guide post 404, and the lifting platform 4 is connected with the movable end of the lifting hydraulic unit 401. The lifting platform 4 comprises an upper platform 402 and a lower platform 403, the upper platform 402 and the lower platform 403 are fixedly connected through a connecting sleeve 405, and the connecting sleeve 405 is sleeved on the guide post 404 in a sliding manner; the lifting platform 4 can move up and down under the lifting action of the lifting hydraulic unit 401, and the screwing tong assembly 2 and the punching tong assembly 3 are moved to positions near the pipe column joint to carry out screwing-off work; in this embodiment, the spinner jaw assembly 2 is fixedly mounted on the upper stage 402, the die assembly 3 is mounted between the upper stage 402 and the lower stage 403, and the first support base 301 is rotatably connected to both the upper stage 402 and the lower stage 403.
The clamping jaw assembly 5 mainly comprises a second supporting seat 501, a second thrust hydraulic unit 502 and a clamping jaw body 503; the second supporting seat 501 is fixedly arranged on the base 6; the second thrust hydraulic units 502 are symmetrically arranged on the side wall of the second support seat 501; the clamp body 503 is provided at the movable end of the second thrust hydraulic unit 502. The clamp bodies 503 can be moved toward and away from each other by the second thrust hydraulic unit 502. The second supporting seat 501 provides radial supporting force for the lower tubular column during operation, and the clamping surface of the clamping pincer body 503 is provided with tooth-shaped grooves which are distributed in the vertical direction, so that the reverse torque of the clamping pincer body for rotating the lower tubular column is increased.
Punching and detaining pincers subassembly 3 includes main first support seat 301, first thrust hydraulic unit 302, connecting rod 303, twist reverse hydraulic unit 304, punching and detain the pincers body 305 and twist reverse bracing piece 306, the upper surface of first support seat 301 is provided with the boss, the lower surface sets up the recess, first support seat 301 is installed between upper stage 402 and lower stage 403 through rotatable the inlaying of this boss and recess, because the limiting displacement of boss and recess, first support seat 301 can only be followed the central axis and rotated.
The upper end and the lower end of the torsion support bar 306 are respectively fixedly arranged on the upper stage 402 and the lower stage 403 through bolts, and the torsion support bar 306 is used for providing a force bearing point and a supporting function when the first support base 301 rotates. The upper end and the lower extreme of connecting rod 303 pass through the upper and lower surface of bolt fastening setting in first supporting seat 301 inside, and the during operation connecting rod 303 will drive first supporting seat 301 rotatory. The fixed end of the torsional hydraulic unit 304 is rotatably connected to the torsional support bar 306, and the movable end is rotatably connected to the connecting bar 303. In operation, the first support base 301 can rotate within a certain range under the driving of the torsional hydraulic unit 304.
The first thrust hydraulic units 302 are symmetrically arranged on the side wall of the first support seat 301; the punching buckle clamp body 305 is arranged at the movable end of the first thrust hydraulic unit 302; the punch-out caliper bodies 305 are movable toward and away from each other by the drive of the first thrust hydraulic unit 302. The clamping surface of the punch-button clamp body 305 is also provided with a tooth-shaped groove which is distributed in the vertical direction, so that the forward torque of the punch-button clamp body when rotating the pipe column is increased.
The spinner-tong assembly 2 mainly comprises a fixed shaft 210, a floating mounting seat 209, a clamping arm 208, a frame 203, a friction wheel 205, a motor 202, a floating hydraulic unit 211, a third thrust hydraulic unit 213, a turning block 214 and a rotary centering rod 215. Two fixed shafts 210 are vertically arranged on the upper layer platform 402, the floating installation seat 209 is movably sleeved on the fixed shafts 210, a clamping arm 208 is movably sleeved on each fixed shaft 210, and the clamping arm 208 is arranged on the floating installation seat 209 and can move up and down along with the floating installation seat 209. The fixed end of the floating hydraulic unit 211 is mounted on the upper stage 402, the movable end is connected with the lower end of the floating mount 209, and the floating hydraulic unit 211 is used for driving the floating mount 209 to move up and down.
The middle part of the clamping arm 208 is fixedly provided with a supporting shaft 204, the end part of the clamping arm 208 is fixedly provided with a connecting rod 212, and the rack 203 is movably sleeved on the supporting shaft 204, so that the rack 203 can freely rotate around the supporting shaft 204, and the rotation of the rack 203 can better center the upper pipe column and make the distribution of the clamping force more uniform in the clamping process of the spinner clamp assembly.
The friction wheel 205 is rotatably installed on the frame 203, the motor 202 is fixedly installed on the upper end surface of the frame 203 through bolts, the motor 202 is connected with the friction wheel 205, the surface of the friction wheel 205 is provided with a high-resistance wear-resistant material, and the friction wheel 205 is driven by the motor 202 to rotate after being contacted and pressed with the upper pipe column, so that the upper pipe column is driven to rotate.
The connecting rod 212 of each clamping arm 208 is connected with the movable end of one third thrust hydraulic unit 213, the fixed ends of the two third thrust hydraulic units 213 are fixedly connected through a connecting shaft, the connecting shaft movably penetrates through the rotating block 214, and the rotating block 214 can rotate around the connecting shaft. The rotating block 214 is slidably sleeved on the rotating centering rod 215, the lower end of the rotating centering rod 215 is rotatably mounted on the lifting platform 4 in a hinged manner, and the rotating centering rod 215 is located in the middle of the two clamping arms 208. When in work, the two third thrust hydraulic units 213 synchronously contract to respectively drive the two clamping arms 208 to approach each other, the rotary centering rod 215 can rotate around the hinged position and also can move up and down along the rotating block 214, during the clamping process of the spinner jaw assembly 2, since the two third thrust hydraulic units 213 are not uniformly contracted, the clamping arm at one side can rotate faster than the clamping arm at the other side, so that the upper pipe column is eccentric during clamping, the clamping arms at the two sides are ensured to be always closed by the same rotating angle due to the left and right limiting action of the rotating centering rod 215, the third thrust hydraulic unit 213 will also during the clamping process be displaced towards or away from the upper pipe string, and the rotation of the turning block 214 and the movement of the rotary centering rod 215 in the turning block 214 can counteract the displacement generated by the third thrust hydraulic unit 213 and can play a centering role.
The spinner clamp assembly 2 further comprises a floating spring 207 and a pressing plate 206, the pressing plate 206 is arranged on the upper portion of the fixed shaft 210, the floating spring 207 is sleeved on the fixed shaft 210 and is located between the pressing plate 206 and the floating mounting seat 209, the pressing plate 206 is screwed on the fixed shaft 210 through a bolt, and the floating mounting seat 209 can still move up and down due to the energy absorption effect of the floating spring 207.
The rack 203 is also provided with a protective baffle 201, and the protective baffle 201 is arranged on the side surface of the rack 203.
Install mud cover 7 on the base 6, mud cover 7 encircles and locates the periphery of spinner pincers subassembly 2, towards the periphery of detaining pincers subassembly 3 and clamp pincers subassembly 5, is equipped with drain 606 on the base 6. The opening of certain angle has been seted up to mud cover 7 circumference, has also set up three viewing aperture 701 on its conical surface, and the staff of being convenient for observes the real-time condition of tubular column 1, and when the tubular column was broken out, there was pollutants such as oil, water in the tubular column, and the pollutant can not splash to all around owing to blockking of mud cover 7, but flows downwards along mud cover 7 inner wall, collects in base 6, finally discharges through drain 606.
The base 6 comprises a mounting base 601, a slurry baffle disc 602 and a mounting flange 603 which are arranged from top to bottom; the mounting base 601 is mainly used for mounting the clamping jaw assembly 5, the lifting hydraulic unit 401 and the guide post 404. The outer edge of the slurry baffle disc 602 is provided with a threaded hole for mounting the slurry cover 7, and the slurry cover 7 is fixedly mounted on the slurry baffle disc 602 through a bottom flange. A plurality of reinforcing ribs 605 are arranged on the slurry baffle disc 602 along the radial direction, and the reinforcing ribs 605 are provided with through circulation holes 604; a drain 606 is provided on the mud flap 602. The mounting flange 603 is provided with a threaded through hole, and the base 6 can be directly mounted on a blowout preventer of a pressurized operation device through the mounting flange 603.
The hydraulic units all adopt hydraulic cylinders, the fixed ends of the hydraulic units are cylinder bodies of the hydraulic cylinders, and the movable ends of the hydraulic units are hydraulic rods of the hydraulic cylinders.
As shown in fig. 5a, 5b, 5c and 5d, the working process of the unbolting wellhead string tripping device in tripping operation comprises the following detailed steps:
firstly, hoisting a first pipe column to a wellhead position by a pipe column elevator on a drilling platform, aligning the position of a central hole of a shackle device on the pipe column of the wellhead of snubbing serving and then lowering the pipe column; when the upper joint of the pipe column is lowered to the position near the upper part of the clamping jaw assembly 5, the elevator stops lowering, the clamping jaw body 503 extends out, the pipe column is clamped (in the process of under-pressure operation, the floating slip can be matched with the clamping pipe column), and the elevator is loosened and lifted;
step two, the elevator lifts a second tubular column to a wellhead position, the second tubular column is placed after being aligned with a central hole position of a tripping device on a wellhead tubular column for snubbing operation, when a male head of an upper tubular column contacts a female head of a lower tubular column, the elevator stops placing, the lifting hydraulic unit 401 pushes the upper platform 402 and the lower platform 403 to move upwards, and when the screwing clamp assembly 2 and the punching clamp assembly 3 rise to proper positions, the lifting hydraulic unit 401 stops lifting;
step three, the third thrust hydraulic unit 213 of the spinner tong assembly 2 contracts, the clamping arms 208 draw close to each other to clamp the pipe column, the motor 202 drives the friction wheel 205 to rotate so as to drive the pipe column to rotate, meanwhile, the floating hydraulic unit 211 contracts to drive the floating mounting seat 209 to move downwards, and the motor 202 stops rotating after the preset torque is reached;
and step four, loosening the screwing clamp assembly 2, pushing the screwing clamp body 305 to clamp the pipe column by the first thrust hydraulic unit 302 of the screwing clamp assembly 3, pushing the pipe column to rotate by a certain angle by the torsion hydraulic unit 304, stopping rotating after a preset torque is reached, loosening the screwing clamp assembly 3, the clamping clamp assembly 5 and the elevator, moving the lifting platform 4 to the initial position, moving the elevator to drive the pipe column to move downwards, and completing screwing.
As shown in fig. 6a, 6b, 6c and 6d, the working process of the unbolting wellhead string when the tripping device is tripped comprises the following detailed steps:
firstly, moving a slip to lift a pipe column to the position near a wellhead of a drilling platform, and clamping the pipe column by an elevator to lift;
step two, when the pipe column joint rises to a position near the upper part of the clamping jaw assembly 5, the elevator stops lifting, the clamping jaw assembly 5 works to clamp the pipe column, the lifting hydraulic unit 401 pushes the upper layer table 402 and the lower layer table 403 to move upwards, and when the screwing jaw assembly 2 and the punching jaw assembly 3 rise to proper positions, the lifting hydraulic unit 401 stops lifting;
thirdly, a first thrust hydraulic unit 302 of the punching and buckling clamp assembly 3 pushes a punching and buckling clamp body 305 to clamp a pipe column, a torsion hydraulic unit 304 pushes the pipe column to rotate for a certain angle, and the pipe column stops rotating after reaching a preset lower torque; the third thrust hydraulic unit 213 of the punching and buckling clamp assembly 3 and the screwing and buckling clamp assembly 2 contracts, the clamping arms 208 mutually approach to clamp the pipe column, the motor 202 drives the friction wheel 205 to rotate so as to drive the pipe column to rotate, meanwhile, the floating hydraulic unit 211 extends to drive the floating mounting seat 209 to move upwards, and the motor 202 stops rotating after the male and female joints of the pipe column are completely separated;
and step four, loosening the spinner clamp assembly 2, moving the lifting platform 4 downwards to the initial position, lifting the pipe column away from the wellhead by the elevator, and completing the shackle removal.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims (10)

1. The utility model provides a device of breaking out on snubbing serving well head tubular column which characterized in that: comprises a spinner clamp assembly (2), a punch clamp assembly (3) and a clamping clamp assembly (5) for clamping a lower tubular column;
the clamping jaw assembly (5) comprises a pair of clamping jaw bodies (503) which can approach and depart from each other;
the punching and buckling clamp assembly (3) comprises a first supporting seat (301) which is rotatably arranged, a pair of punching and buckling clamp bodies (305) which can be close to and far away from each other and a torsion hydraulic unit (304) for pushing the first supporting seat (301) to rotate, wherein the punching and buckling clamp bodies (305) are arranged on the first supporting seat (301);
the spinner clamp assembly (2) comprises a floating mounting seat (209) capable of moving up and down and a pair of clamping arms (208) capable of moving close to and away from each other, wherein the clamping arms (208) are mounted on the floating mounting seat (209), and friction wheels (205) for driving the upper pipe column to rotate are arranged on opposite surfaces of the two clamping arms (208).
2. The snubbing serving well head string make-up and breakout device of claim 1, wherein: the clamping device is characterized by further comprising a base (6) and a lifting platform (4), wherein the clamping clamp assembly (5) is fixedly installed on the base (6), the lifting platform (4) can be installed on the base (6) in a vertically moving mode, and the rotary buckling clamp assembly (2) and the punching buckling clamp assembly (3) are installed on the lifting platform (4).
3. The snubbing serving well head string make-up and breakout device of claim 2, wherein: the lifting hydraulic unit (401) and the guide post (404) are arranged on the base (6), the lifting platform (4) is sleeved on the guide post (404) in a sliding mode, and the lifting platform (4) is connected with the movable end of the lifting hydraulic unit (401).
4. The snubbing serving well head string make-up and breakout device of claim 2, wherein: the lifting platform (4) comprises an upper platform (402) and a lower platform (403), the upper platform (402) and the lower platform (403) are connected through a connecting sleeve (405), and the connecting sleeve (405) is sleeved on the guide post (404) in a sliding manner; the rotary buckling clamp assembly (2) is arranged on the upper layer platform (402), the punching buckling clamp assembly (3) is arranged between the upper layer platform (402) and the lower layer platform (403), and the first supporting seat (301) is rotatably connected with the upper layer platform (402) and the lower layer platform (403).
5. The snubbing serving wellhead string tripping device according to claim 1 or 2, wherein: the clamping jaw assembly (5) further comprises a second supporting seat (501) and a second thrust hydraulic unit (502); the second thrust hydraulic units (502) are symmetrically arranged on the side wall of the second supporting seat (501); the clamping pincer body (503) is arranged at the movable end of the second thrust hydraulic unit (502).
6. The snubbing serving wellhead string tripping device according to claim 1 or 2, wherein: the punching buckle clamp assembly (3) further comprises a first thrust hydraulic unit (302), a torsion supporting rod (306) and a connecting rod (303); the first thrust hydraulic units (302) are symmetrically arranged on the side wall of the first support seat (301); the punching and buckling clamp body (305) is arranged at the movable end of the first thrust hydraulic unit (302); the connecting rod (303) is arranged on the first supporting seat (301), the fixed end of the torsion hydraulic unit (304) is connected with the torsion supporting rod (306), and the movable end of the torsion hydraulic unit is connected with the connecting rod (303).
7. The snubbing serving wellhead string tripping device according to claim 1 or 2, wherein: the turnbuckle clamp assembly (2) further comprises a fixed shaft (210), and the floating mounting seat (209) and the clamping arm (208) are movably sleeved on the fixed shaft (210); the upper end of the floating installation seat (209) is provided with a floating spring (207), the lower end of the floating installation seat (209) is connected with the movable end of the floating hydraulic unit (211), the fixed shaft (210) is provided with a pressing plate (206), and the upper end of the floating spring (207) is connected with the pressing plate (206).
8. The snubbing serving wellhead string tripping device according to claim 1 or 2, wherein: a rack (203) is rotatably arranged in the middle of the clamping arm (208), a friction wheel (205) is installed on the rack (203), and a motor (202) for driving the friction wheel (205) is arranged on the rack (203); the end parts of the clamping arms (208) are connected with the movable ends of the third thrust hydraulic units (213), the fixed ends of the two third thrust hydraulic units (213) are fixedly connected through a connecting shaft, the connecting shaft movably penetrates through a rotating block (214), the rotating block (214) is sleeved on a rotary centering rod (215) in a sliding mode, the rotary centering rod (215) is rotatably installed on the lifting platform (4), and the rotary centering rod (215) is located in the middle of the two clamping arms (208).
9. The snubbing serving well head string make-up and breakout device of claim 2, wherein: install mud cover (7) on base (6), mud cover (7) encircle locate the periphery of detaining pincers subassembly (2), dashing to detain pincers subassembly (3) and clamp tightly pincers subassembly (5) soon, are equipped with drain (606) on base (6).
10. The snubbing serving wellhead pipe string make-up and breakout device of claim 9, wherein: the base (6) comprises a mounting seat (601), a slurry baffle disc (602) and a mounting flange (603) which are arranged from top to bottom; the clamping jaw assembly (5) is installed on the installation base (601), the slurry cover (7) is installed on the slurry baffle disc (602), reinforcing ribs (605) are arranged on the slurry baffle disc (602), and through circulation holes (604) are formed in the reinforcing ribs (605); the sewage outlet (606) is arranged on the slurry baffle disc (602).
CN202210243814.2A 2022-03-14 2022-03-14 Device for tripping on wellhead pipe column for snubbing operation Withdrawn CN114320191A (en)

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