CN114658382A - Bidirectional-linkage wellhead hydraulic cutting device and cutting method for oil and gas wells - Google Patents
Bidirectional-linkage wellhead hydraulic cutting device and cutting method for oil and gas wells Download PDFInfo
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- CN114658382A CN114658382A CN202210457589.2A CN202210457589A CN114658382A CN 114658382 A CN114658382 A CN 114658382A CN 202210457589 A CN202210457589 A CN 202210457589A CN 114658382 A CN114658382 A CN 114658382A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 201
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 100
- 238000001802 infusion Methods 0.000 claims description 26
- 239000002173 cutting fluid Substances 0.000 claims description 8
- 230000003628 erosive effect Effects 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 10
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 7
- 238000005488 sandblasting Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a bidirectional-linkage hydraulic cutting device and a cutting method for a wellhead of an oil-gas well. The invention adopts bidirectional simultaneous cutting, can prevent high-speed jet from penetrating through high-speed flowing formation fluid, and greatly improves the cutting efficiency of a wellhead.
Description
Technical Field
The invention relates to a bidirectional linkage oil and gas well mouth hydraulic cutting device and a cutting method, which are suitable for obstacle clearing cutting and well mouth hydraulic sand blasting cutting operation of out-of-control emergency of blowout of an oil and gas well.
Background
When the blowout of an oil and gas well is out of control and catches fire, the common conditions are that a derrick collapses due to burning, a wellhead device is damaged, and obstacle clearing cutting and wellhead cutting operations need to be implemented. The cutting modes adopted by the obstacle clearing cutting and the wellhead cutting are mechanical cutting, flame cutting, hydraulic cutting and the like. And well head cutting, especially the long distance well head cutting under the well head damage condition after the blowout is out of control and catches fire, hydraulic power sandblast cutting is preferred.
The hydraulic sand-blasting cutting is a technology for removing materials by using cutting sand (abrasive particles) and a liquid flow stream flowing at a high speed to mix with each other to form a liquid-solid two-phase medium jet flow so as to carry out cutting. The liquid medium is mixed with the abrasive material in the sand mixing device to form cutting fluid, and the cutting fluid is pressurized into high-pressure fluid. The high-pressure liquid passes through a nozzle at the end of the liquid conveying pipe, and forms ultra-high-speed jet flow to generate static pressure destructive action after throttling, so that the high-frequency erosion and grinding of the abrasive particles to the material are completed.
At present, long-distance hydraulic sand blasting cutting devices used for well blowout out-of-control emergency comprise a multi-head hydraulic sand blasting cutting gun head device (patent number: 201120283567.6), a high-pressure hydraulic sand blasting fire cutting device (patent number: 99231617.0), a double-pipe single-nozzle hydraulic sand blasting cutting device (patent number: 201120048891. X) and the like. When the hydraulic sand-blasting cutting device cuts and carries out wellhead cutting, high-speed jet flow needs to penetrate through fluid in a well to carry out cutting, the water energy loss is large, the cutting efficiency is low, and even the cutting cannot be carried out; the cutting device can not accurately align to a wellhead under severe working conditions such as high temperature, smoke and the like, and the distance between the nozzle and the cut wellhead is difficult to control, so that the cutting efficiency is greatly influenced; when the wellhead is cut, if the cutting is not completed for one time, the existing operation surface can be damaged under the condition of forming the notch, so that the condition of more difficult secondary cutting is caused.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a bidirectional-linkage wellhead hydraulic cutting device and a cutting method for an oil-gas well. The invention adopts bidirectional simultaneous cutting, can prevent high-speed jet from penetrating through high-speed flowing formation fluid, and greatly improves the cutting efficiency of a wellhead.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a two-way linkage's oil gas well head water conservancy cutting device which characterized in that: including cutting tool send-in device, front end cutting tool head and rearmounted drive arrangement, the equal fixed connection of cutting tool head and drive arrangement is on cutting tool send-in device, and cutting tool send-in device is used for sending the cutting tool head to the well head and treats the cutting position, and drive arrangement is used for driving two-way cutting nozzle motion of cutting tool head.
The cutting tool head comprises a cutting tool body, walking tracks, transmission infusion tubes and cutting nozzles, one end of the cutting tool body is fixedly connected with the cutting tool feeding device, the other end of the cutting tool body is fixedly connected with the two walking tracks, each walking track is provided with one cutting nozzle in a sliding mode, one cutting nozzle is connected with one transmission infusion tube, and the transmission infusion tube is driven to move by the rear driving device; when the cutting tool feeding device feeds the cutting tool head to the position of the wellhead to be cut, the position of the wellhead to be cut is positioned between the two walking tracks.
The cutting tool head also comprises two sliding blocks which are respectively arranged on the two walking tracks in a sliding way, and the two transmission infusion tubes are respectively fixed on the two sliding blocks.
The cutting tool head further comprises two guide blocks, the guide blocks are of wedge-shaped structures, and the two guide blocks are fixed at the free ends of the two walking tracks respectively.
The cutting tool head further comprises a positioning block, the positioning block is fixed on the cutting tool body and located between the two walking rails, and the matching position of the positioning block and the outer wall of the wellhead is arranged in a V shape.
The cutting tool body comprises a rear section connecting plate, a connecting beam and a front section connecting plate, the rear section connecting plate and the front section connecting plate are fixedly connected with the connecting beam, the rear section connecting plate is fixedly connected to the cutting tool feeding device, and the two walking rails and the positioning blocks are fixedly connected to the front section connecting plate.
The walking track adopts a dovetail track, the free end of the track is planar, a threaded hole is formed in the plane, and the guide block is fixedly connected with the walking track through the threaded hole; the other end is set as a flange, and the flange end is connected to the front section connecting plate of the cutting tool body through bolts.
The lower part of the sliding block is arranged in a dovetail shape and is arranged in a dovetail groove of the walking track in a sliding mode, the upper part of the sliding block is provided with an arc groove, and the transmission infusion tube is fixed in the arc groove through a hoop.
The cutting tool feeding device is of a truss mast structure and is connected to the engineering machinery.
The rear driving device comprises a driving base, a driving motor and a transmission piece, the driving base is fixedly arranged on the cutting tool feeding device, the driving motor is fixedly arranged on the driving base, the driving motor is connected with the transmission piece, the transmission piece is connected with a transmission infusion tube, and the transmission piece drives the cutting nozzle to move on the traveling track through the transmission infusion tube.
The transmission part comprises an output shaft, a T-shaped steering gear, transmission shafts, an L-shaped steering gear, a transmission screw, a screw shaft seat, a transmission nut and a guide rail, wherein one end of the output shaft is connected with a driving motor, the other end of the output shaft is connected with the power input end of the T-shaped steering gear, the two power output ends of the T-shaped steering gear are connected with the two transmission shafts, the other ends of the two transmission shafts are connected with the two L-shaped steering gears, the power output end of the L-shaped steering gear is connected with the transmission screw, the transmission screw is fixed on the screw shaft seat, the screw shaft seat is fixed on the driving base through bolts, the transmission nut is connected on the transmission screw, the transmission nut is arranged on the guide rail in a sliding manner, the transmission nut is fixedly connected with a transmission infusion tube, and the guide rail is fixed on the driving base.
The T-shaped steering gear comprises an input end and two output ends and is connected to the driving base through a bolt; the L-shaped steering gear converts the power direction of two output shafts of the T-shaped steering gear to the axial direction parallel to the driving motor.
The transmission nut converts the rotary motion of the driving motor into linear motion, the upper part of the transmission nut is provided with a U-shaped groove, the middle part of the transmission nut is provided with a screw hole, the lower part of the transmission nut is provided with a dovetail groove, the U-shaped groove in the upper part is fixedly connected with a transmission infusion tube through a U-shaped clamp, the screw hole in the middle part is installed on a transmission screw rod, and the dovetail groove in the lower part slides on a guide rail.
A cutting method of a bidirectional linkage oil-gas well wellhead hydraulic cutting device is characterized by comprising the following steps:
before cutting:
the cutting tool feeding device feeds the cutting device to the position near the wellhead of the out-of-control well, and the two walking rails pass through the two sides of the wellhead;
the guide block guides the wellhead into the space between the two walking tracks;
the positioning block is close to the wellhead, and the wellhead is positioned in the middle of the two walking tracks through V-shaped guide;
when cutting:
the driving motor drives the output shaft, the driving force is divided into two parts through the T-shaped steering gear, and then the power is transmitted to the transmission screw rod through the L-shaped steering gear to drive the transmission nut to move back and forth;
the two transmission nuts respectively drag the transmission infusion tube and the cutting nozzle to synchronously and slowly move from front to back;
and (4) eroding and grinding the wellhead from two sides by the high-speed jet flow of the mixed sand cutting fluid formed by the two cutting nozzles to finish wellhead cutting.
The invention has the advantages that:
1. the invention adopts two cutting nozzles to cut synchronously and bidirectionally at the same time, which can prevent high-speed jet flow from penetrating through stratum fluid flowing at high speed, and greatly improves the cutting efficiency of a wellhead.
2. The invention adopts a mode of moving cutting from front to back simultaneously, after a wellhead is cut through, transverse flame generated by fluid sprayed out of the well is sprayed to the right front of the cutting equipment, so that the fluid in the well can be prevented from being sprayed out of the cut to erode the cutting equipment, and the service life of the equipment is prolonged.
3. The driving device is in a full mechanical structure close to the wellhead end, has good temperature resistance, is suitable for being used in a high-temperature fire environment, is far away from the wellhead position and the high-temperature fire environment, is convenient for temperature resistance protection and fault detection and maintenance in the cutting period.
4. According to the invention, through the transmission of the cutting high-pressure infusion metal hard tube, the front-end cutting nozzle is synchronous with the rear-end driving device, so that the cutting progress can be conveniently observed, whether the cutting is normal or not can be conveniently observed, and the cutting device is more suitable for being used in a fire-carrying high-temperature severe environment.
Drawings
FIG. 1 is a schematic view of a cutting tool head for cutting according to the present invention;
FIG. 2 is a schematic top view of the cutting tool head at the cut of FIG. 1;
FIG. 3 is a schematic view of a rear driving device for cutting according to the present invention;
FIG. 4 is a schematic top view of the rear driving device for cutting according to the present invention.
Labeled as: 1. the cutting tool feeding device comprises a cutting tool feeding device 2, a cutting tool body 3, a walking track 4, a sliding block 5, a transmission infusion tube 6, a cutting nozzle 7, a guide block 8, a positioning block 9, a well head 10, a driving base 11, a hoop 12, a driving motor 13, an output shaft 14, a T-shaped steering gear 15, a transmission shaft 16, an L-shaped steering gear 17, a transmission screw rod 18, a screw rod shaft seat 19, a transmission nut 20 and a guide rail.
Detailed Description
Embodiments of the invention are given below in conjunction with figures 1-4:
a bidirectional-linkage oil-gas well mouth hydraulic cutting device comprises a front-end cutting tool head and a rear-mounted driving device, wherein the cutting tool head and the rear-mounted driving device are connected to a cutting tool feeding device 1 and are connected and linked with each other through a transmission liquid conveying pipe 5. The cutting tool feed apparatus 1 is used to feed the cutting apparatus into the vicinity of the wellhead of an uncontrolled well to effect a wellhead cut.
The cutting tool head includes cutting tool body 2, walking track 3, slider 4, transmission transfer line 5, cutting nozzle 6, guide block 7, locating piece 8, 2 one end fixed connection cutting tool send-in device 1 of cutting tool body, two walking track 3 one ends of other end fixed connection, 3 other ends fixed set up guide block 7 of walking track, two sliders 4 slide respectively and set up on two walking track 3, the one end of two transmission transfer lines 5 is fixed respectively on two slider 4, cutting nozzle 6 sets up at 5 tip of transmission transfer line, locating piece 8 is fixed on cutting tool body 2 and is located between two walking track 3.
The cutting tool feeding device 1 is of an existing truss type mast structure, is connected to engineering machinery such as a bulldozer or an excavator and is used for feeding the cutting device to the position near the wellhead of an out-of-control well to cut the wellhead.
The walking track 3 adopts a dovetail track, one end of the track is processed into a plane shape, and a threaded hole is processed on the plane; the other end is processed into a flange, and the flange end is connected to the front section connecting plate of the cutting tool body 2 through bolts.
The slide block 4 adopts a dovetail shape of a dovetail lower part processing position, the upper part is processed into an arc groove shape, and the lower part is arranged on the dovetail groove of the walking track 3 and can freely slide back and forth on the dovetail groove of the walking track 3.
The transmission transfusion tube 5 is composed of a high-pressure metal tube, is fixed on an arc groove at the upper part of the slide block 4 by a hoop and is used for cutting and transmitting high-pressure sand-mixing cutting fluid and dragging the slide block 4 and the cutting nozzle 6 to move back and forth along a track.
The cutting nozzle 6 is arranged on the transmission infusion tube 5 in a threaded connection mode, moves back and forth along with the slide block 4 and the transmission infusion tube 5, and forms high-pressure sand-mixing cutting fluid into a high-speed jet cutting wellhead 9.
The guide block 7 is in a wedge-shaped structure and is fixed on one side of the walking track 3 with a threaded hole by a bolt.
One end of the positioning block 8 is processed into a V shape, the other end of the positioning block is processed into a flange, the flange end is fixed on the cutting tool body 2 through bolts, and the cutting tool feeding device 1 plays a role in guiding and positioning when feeding the cutting device into the vicinity of the mouth of the out-of-control well.
The rear driving device comprises a driving base 10, a driving base mounting hoop 11, a driving motor 12, an output shaft 13, a T-shaped steering gear 14, transmission shafts 15, an L-shaped steering gear 16, a transmission screw 17, a screw shaft seat 18, a transmission nut 19 and a guide rail 20, wherein the driving base 10 is connected to the cutting tool feeding device 1 by four groups of base fixing hoops 11, the driving motor 12 is connected to the driving base 10 through bolts, one end of the output shaft 13 is connected to the driving motor 12, the other end of the output shaft is connected to the power input end of the T-shaped steering gear 14, two power output ends of the T-shaped steering gear 14 are connected to the two transmission shafts 15, the other ends of the two transmission shafts 15 are connected to the two L-shaped steering gears 16, the L-shaped steering gears 16 are connected to the driving base 10 through bolts, the power output ends of the L-shaped steering gears 16 are connected to the transmission screw 17, and the other ends of the transmission screws 17 are fixed to the screw 18, the screw shaft seat 18 is fixed on the driving base 10 by bolts, the transmission nut 19 is connected on the transmission screw 17, and the guide rail 20 is fixed on the driving base 10 by bolts.
The driving machine base 10 is provided with four sets of driving machine base mounting columns and driving motor mounting plates, and is provided with guide rails, a steering gear and screw shaft base mounting screw holes, and the four sets of driving machine base mounting columns are fixed on a truss girder at the rear end of the cutting tool feeding device 1 by using machine base fixing hoops 11.
The driving motor 12 is a power component for moving the cutting device and is connected to a driving motor mounting plate of the driving base 10 by bolts.
The output shaft 13 is a power transmission shaft, one end of which is connected to the driving motor 12, and the other end of which is connected to the power input end of the T-shaped steering gear 14.
The T-shaped steering gear 14 has an input end and two output ends, the output speeds of the two output ends are identical, and the two output ends are connected to the driving machine base 10 by bolts.
The L-shaped steering gear 16 converts the directions of the two output shafts of the T-shaped steering gear 14 into the parallel axial directions of the motor, and the L-shaped steering gear 16 and the T-shaped steering gear 14 are connected together by a transmission shaft 15.
One end of a transmission screw 17 is connected with the output end of the L-shaped steering gear 16, and the other end is fixed on a screw shaft seat 18.
The transmission nut 19 converts the rotary motion of the driving motor into linear motion, the upper part is provided with a U-shaped groove, the middle part is provided with a screw hole, the lower part is provided with a dovetail groove, the upper U-shaped groove is fixedly connected with the transmission infusion tube 5 through a U-shaped clamp, the middle screw hole is arranged on the transmission screw rod 17, and the lower dovetail groove can slide on the guide rail 20.
The guide rail 20 is a dovetail structure and is fixed on the driving base 10 by bolts, and is used for limiting the rotation of the driving nut 19 along with the driving screw 17.
The utility model provides a two-way linkage's oil gas well head water conservancy cutting device's cutting method, when implementing the well head cutting, two sets of cutting nozzle spray high-speed cutting mixed liquid erosion grinding well head after going to simultaneously, accomplish the well head cutting from going to, specifically as follows:
before cutting:
the cutting nozzle 6 is arranged at the flange end of the walking track 3, and the cutting nozzle 6 is prevented from colliding when the cutting tool is aligned.
The cutting tool feeding device 1 feeds the cutting device into the vicinity of the wellhead of an uncontrolled well, and the two running rails 3 pass through the wellhead 9 from both sides.
The guide block 7 guides the wellhead into between the two running rails 3.
The positioning block 8 is close to the wellhead 9, and the wellhead 9 is positioned in the central position of the two walking tracks 3 through V-shaped guiding.
When cutting:
the driving motor 12 drives the output shaft 13, the driving force is divided into two parts through the T-shaped steering gear 14, and the power is transmitted to the transmission screw 17 through the L-shaped steering gear 16, so that the transmission nut 19 is driven to move back and forth.
The two transmission nuts 19 respectively drag the transmission transfusion tube 5 and the cutting nozzle 6 to synchronously and slowly move from front to back.
And the sand-mixed cutting fluid formed by the two cutting nozzles 6 is subjected to erosion grinding of the wellhead 9 from two sides by high-speed jet flow, so that wellhead cutting is completed.
The invention adopts the double cutting nozzles to cut simultaneously from the front to the back of the two sides of the wellhead, and the high-speed jet cutting fluid does not need to penetrate fluid in the well, thereby greatly improving the cutting efficiency and avoiding the fluid sprayed out of the well and the generated transverse flame from damaging the cutting equipment.
The main design points of the invention are as follows:
1. the cutting tool is designed with two walking tracks and a cutting nozzle.
2. The two walking tracks and the cutting nozzle are arranged left and right.
3. The locating piece makes the well head be located two walking orbital central positions through the V structure.
4. The front end of the guide rail is provided with a wedge-shaped guide block for guiding the wellhead to be centered.
5. The transmission infusion tube has the functions of conveying the mixed liquid by high-pressure cutting and the transmission function of the transmission nozzle moving back and forth.
6. The rear-mounted driving device is adopted to solve the problems of high temperature resistance, cutting progress monitoring, inspection and maintenance.
7. The cutting nozzle moves to cut from front to back, and transverse flame generated by fluid sprayed out of the well is sprayed to the right front of the cutting equipment, so that the damage to the cutting equipment is small.
On the basis of the technical scheme of the invention, a person skilled in the art can make a plurality of technical improvements on the rear driving device to realize the function of the rear driving device, so that the composition and the structure of the rear driving device disclosed by the invention are only the best mode and not the only mode.
Claims (10)
1. The utility model provides a two-way linkage's oil gas well head water conservancy cutting device which characterized in that: the cutting tool feeding device comprises a cutting tool feeding device (1), a front-end cutting tool head and a rear driving device, wherein the cutting tool head and the driving device are fixedly connected to the cutting tool feeding device (1), the cutting tool feeding device (1) is used for feeding the cutting tool head to a wellhead position to be cut, and the driving device is used for driving two bidirectional cutting nozzles (6) of the cutting tool head to move.
2. The bi-directional linkage oil and gas well wellhead hydraulic cutting device according to claim 1, characterized in that: the cutting tool head comprises a cutting tool body (2), walking rails (3), transmission infusion tubes (5) and cutting nozzles (6), one end of the cutting tool body (2) is fixedly connected with a cutting tool feeding device (1), the other end of the cutting tool body is fixedly connected with the two walking rails (3), each walking rail (3) is provided with one cutting nozzle (6) in a sliding mode, one cutting nozzle (6) is connected with one transmission infusion tube (5), and the transmission infusion tube (5) is driven to move by a rear-mounted driving device; when the cutting tool feeding device (1) feeds the cutting tool head to the position of the wellhead to be cut, the position of the wellhead to be cut is positioned between the two walking tracks (3).
3. The bi-directional linkage oil and gas well wellhead hydraulic cutting device of claim 2, characterized in that: the cutting tool head also comprises two sliding blocks (4), two guide blocks (7) and a positioning block (8), the two sliding blocks (4) are respectively arranged on the two walking tracks (3) in a sliding manner, and the two transmission infusion tubes (5) are respectively fixed on the two sliding blocks (4); the guide blocks (7) are of wedge-shaped structures, and the two guide blocks (7) are respectively fixed at the free ends of the two walking tracks (3); the positioning block (8) is fixed on the cutting tool body (2) and located between the two walking rails (3), and the matching position of the positioning block (8) and the outer wall of the wellhead is arranged in a V shape.
4. The bi-directional linkage oil and gas well wellhead hydraulic cutting device according to claim 3, characterized in that: the cutting tool body (2) comprises a rear section connecting plate, a connecting beam and a front section connecting plate, the rear section connecting plate and the front section connecting plate are fixedly connected with the connecting beam, the rear section connecting plate is fixedly connected to the cutting tool feeding device (1), and two walking rails (3) and a positioning block (8) are fixedly connected to the front section connecting plate.
5. The bi-directional linkage oil and gas well wellhead hydraulic cutting device of claim 4, which is characterized in that: the walking track (3) is a dovetail track, the free end of the track is planar, a threaded hole is formed in the plane, and the guide block (7) is fixedly connected with the walking track (3) through the threaded hole; the other end is arranged to be a flange, and the flange end is connected to the front section connecting plate of the cutting tool body (2) through bolts.
6. The bi-directional linkage oil and gas well wellhead hydraulic cutting device according to claim 5, characterized in that: the lower part of the sliding block (4) is arranged in a dovetail shape and is arranged in a dovetail groove of the walking track (3) in a sliding mode, the upper part of the sliding block is provided with an arc groove, and the transmission infusion tube (5) is fixed in the arc groove through a hoop.
7. The bi-directional linkage oil and gas well wellhead hydraulic cutting device according to claim 6, characterized in that: the rear driving device comprises a driving base (10), a driving motor (12) and a transmission part, wherein the driving base (10) is fixedly arranged on the cutting tool feeding device (1), the driving motor (12) is fixedly arranged on the driving base (10), the driving motor (12) is connected with the transmission part, the transmission part is connected with a transmission infusion tube (5), and the transmission part drives the cutting nozzle (6) to move on the walking track (3) through the transmission infusion tube (5).
8. The bi-directional linkage oil and gas well wellhead hydraulic cutting device according to claim 7, characterized in that: the transmission part comprises an output shaft (13), a T-shaped steering gear (14), transmission shafts (15), an L-shaped steering gear (16), a transmission screw (17), a screw shaft seat (18), a transmission nut (19) and a guide rail (20), one end of the output shaft (13) is connected with a driving motor (12), the other end of the output shaft is connected with the power input end of the T-shaped steering gear (14), two power output ends of the T-shaped steering gear (14) are connected with the two transmission shafts (15), the other ends of the two transmission shafts (15) are connected with the two L-shaped steering gears (16), the power output end of the L-shaped steering gear (16) is connected with the transmission screw (17), the transmission screw (17) is fixed on the screw shaft seat (18), the screw shaft seat (18) is fixed on the driving machine seat (10) by bolts, the transmission nut (19) is connected on the transmission screw (17), and the transmission nut (19) is arranged on the guide rail (20) in a sliding manner, the transmission nut (19) is fixedly connected with the transmission infusion tube (5), and the guide rail (20) is fixed on the driving base (10).
9. The bi-directional linkage oil and gas well wellhead hydraulic cutting device according to claim 8, characterized in that: the T-shaped steering gear (14) comprises an input end and two output ends and is connected to the driving base (10) through a bolt; the L-shaped steering gear (16) converts the power directions of two output shafts of the T-shaped steering gear (14) to the axial direction parallel to the driving motor (12); the transmission nut (19) converts the rotary motion of the driving motor into linear motion, the upper part of the transmission nut (19) is provided with a U-shaped groove, the middle part is provided with a screw hole, the lower part is provided with a dovetail groove, the upper U-shaped groove is fixedly connected with the transmission infusion tube (5) through a U-shaped clamp, the middle screw hole is arranged on the transmission screw rod (17), and the lower dovetail groove slides on the guide rail (20).
10. The method of cutting a bi-directional linked wellhead hydraulic cutting device for oil and gas wells according to any of claims 1 to 9, comprising:
before cutting:
the cutting tool feeding device (1) feeds the cutting device to the position near the wellhead of the out-of-control well, and the two walking rails (3) pass through the two sides of the wellhead (9);
the guide block (7) guides the well mouth into the space between the two walking tracks (3);
the positioning block (8) is close to the well head (9), and the well head (9) is positioned in the middle of the two walking tracks (3) through V-shaped guiding;
when cutting:
the driving motor (12) drives the output shaft (13), the driving force is divided into two parts through the T-shaped steering gear (14), and then the power is transmitted to the transmission screw rod (17) through the L-shaped steering gear (16) to drive the transmission nut (19) to move back and forth;
the two transmission nuts (19) respectively drag the transmission infusion tube (5) and the cutting nozzle (6) to synchronously and slowly move from front to back;
and (3) carrying out erosion grinding on the well mouth (9) from two sides by the high-speed jet flow of the mixed sand cutting fluid formed by the two cutting nozzles (6) to finish the cutting of the well mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210457589.2A CN114658382A (en) | 2022-04-28 | 2022-04-28 | Bidirectional-linkage wellhead hydraulic cutting device and cutting method for oil and gas wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210457589.2A CN114658382A (en) | 2022-04-28 | 2022-04-28 | Bidirectional-linkage wellhead hydraulic cutting device and cutting method for oil and gas wells |
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| Publication Number | Publication Date |
|---|---|
| CN114658382A true CN114658382A (en) | 2022-06-24 |
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| CN202210457589.2A Pending CN114658382A (en) | 2022-04-28 | 2022-04-28 | Bidirectional-linkage wellhead hydraulic cutting device and cutting method for oil and gas wells |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202029044U (en) * | 2011-02-28 | 2011-11-09 | 中国石油集团川庆钻探工程有限公司 | Double-pipe and single-spray hydraulic sand blasting cutting device |
| CN202180421U (en) * | 2011-08-05 | 2012-04-04 | 李庆光 | Multi-head hydraulic sand-blasting cutting squirt head device |
| CN112211584A (en) * | 2020-08-28 | 2021-01-12 | 中国海洋石油集团有限公司 | Well control emergency cutting and obstacle clearing double-arm executing mechanism |
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2022
- 2022-04-28 CN CN202210457589.2A patent/CN114658382A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202029044U (en) * | 2011-02-28 | 2011-11-09 | 中国石油集团川庆钻探工程有限公司 | Double-pipe and single-spray hydraulic sand blasting cutting device |
| CN202180421U (en) * | 2011-08-05 | 2012-04-04 | 李庆光 | Multi-head hydraulic sand-blasting cutting squirt head device |
| CN112211584A (en) * | 2020-08-28 | 2021-01-12 | 中国海洋石油集团有限公司 | Well control emergency cutting and obstacle clearing double-arm executing mechanism |
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