CN110173228B - One-key well control blowout prevention process for well workover operation - Google Patents
One-key well control blowout prevention process for well workover operation Download PDFInfo
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- CN110173228B CN110173228B CN201910585768.2A CN201910585768A CN110173228B CN 110173228 B CN110173228 B CN 110173228B CN 201910585768 A CN201910585768 A CN 201910585768A CN 110173228 B CN110173228 B CN 110173228B
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- 230000002265 prevention Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000008569 process Effects 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 82
- 238000010008 shearing Methods 0.000 claims abstract description 25
- 239000002243 precursor Substances 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 50
- 239000003921 oil Substances 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 13
- 241001397809 Hakea leucoptera Species 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 4
- 210000004907 gland Anatomy 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012954 risk control Methods 0.000 description 1
- 238000007789 sealing Methods 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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Abstract
The invention discloses a one-key well control blowout prevention process for workover treatment, which comprises the following steps: when a blowout precursor appears, the driller puts the oil pipe to the wellhead and closes the hydraulic slip; pressing down a controller well control blowout prevention button in a driller room, closing a hydraulic blowout preventer below a well control platform, and lifting a plug valve vertical position adjusting mechanism to a working position; the plug valve horizontal position adjusting mechanism drives the outer arm of the rotary shell to move to a working position above a wellhead; the vertical position adjusting mechanism of the plug valve descends to an initial position, and the rotating power mechanism of the plug valve rotates to drive the plug valve to start to be buckled up until the plug valve is screwed with the tubing coupling of the well mouth; the rotary power mechanism of the plug valve continues to rotate, the shearing pin is twisted off, and the first hydraulic motor is separated from the plug valve; the vertical position adjusting mechanism of the plug valve is lifted to a working position, and a pressure gauge arranged on the plug valve is exposed to display the pressure in the well; the hydraulic well control blowout prevention cock device rotates the oil cylinder to act to drive the swing arm to return to the initial position; the hydraulic well control blowout prevention cock device lifting oil cylinder descends to an initial position.
Description
Technical Field
The invention relates to the technical field of well control, in particular to a one-key well control blowout prevention process for workover treatment.
Background
Well control blowout prevention is an important link for safety risk control in the exploration and development process of oil field enterprises. In the construction operation processes of well drilling, well workover, oil and gas testing, testing and the like, once a blowout precursor is found, constructors need to take well shutting measures rapidly, namely installing a blowout prevention cock and shutting a wellhead blowout preventer, so that the wellhead of an oil and gas well can reach a control state rapidly, and the safety of lives and property and the environment are guaranteed.
In the prior art, in order to greatly reduce potential safety production hazards during workover treatment, oil field enterprises widely popularize and apply workover treatment automatic operation devices to replace manual operation. The well control blowout prevention technology in the well repair operation process also needs to be upgraded by an automatic control technology urgently, and the requirement of safe production of the oil field well repair operation is met.
Disclosure of Invention
Aiming at overcoming the defects in the prior art and aiming at the requirements of a well control blowout prevention automatic operation process technology, the invention takes the workover operation construction of an oil field enterprise as an object, and the invention adopts the well control blowout prevention automatic operation processes of installing a hydraulic well control blowout prevention cock, opening and closing a wellhead hydraulic blowout preventer by one key and the like on the basis of an electric control liquid technology to ensure the safe well control work in the workover operation process of the oil field enterprise.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a workover well control blowout prevention process comprising blowout prevention using a hydraulic well control blowout prevention device, the hydraulic well control blowout prevention device comprising: including supporting seat, plug valve horizontal position guiding mechanism, plug valve vertical position guiding mechanism, hydraulic pressure preventer, controller, the supporting seat is connected with the well head platform, plug valve vertical position guiding mechanism is connected with the supporting seat of lower part, and plug valve horizontal position guiding mechanism's inboard is connected with plug valve vertical position guiding mechanism's upper portion, plug valve rotary mechanism inboard is connected with plug valve horizontal position guiding mechanism's the outside, and plug valve connecting piece upper portion is connected with plug valve rotary mechanism's power take off end, plug valve connecting piece and plug valve are through shearing the pin junction, the lower part of plug valve is equipped with the conical surface, is equipped with the external screw thread on the conical surface, external screw thread and oil pipe screw-thread fit, the controller is used for controlling plug valve vertical position guiding mechanism's lift removal, The rotary motion of the plug valve rotary power mechanism and the horizontal rotation of the plug valve horizontal position adjusting mechanism;
the controller comprises a CPU, a digital quantity input module, a digital quantity output module, a proximity sensor, a well control blowout prevention button, a relay, electromagnetic valves, a hydraulic oil cylinder I, a hydraulic oil cylinder II, a pump station unit of a hydraulic motor hydraulic system, a motor transmission unit and a generator set, wherein the digital quantity input module is used for receiving input signals of the control button and the proximity sensor, the output module is used for controlling the on-off of each corresponding electromagnetic valve arranged on a hydraulic oil circuit of the hydraulic oil cylinder I, the hydraulic oil cylinder II and a hydraulic motor hydraulic oil circuit respectively to realize the telescopic action of the hydraulic oil cylinder I and the hydraulic oil cylinder II and the positive and negative rotation action of the hydraulic motor, the motor transmission unit provides hydraulic kinetic energy required by operation for the pump station unit, the blowout prevention button is connected with the digital quantity input module, and the blowout prevention button is used for setting and triggering the manual and automatic operation of the controller;
the CPU transmits a control signal to the relay through the digital quantity output module, and the relay is used for controlling the action of each corresponding electromagnetic valve in the hydraulic oil circuit of the hydraulic oil cylinder I, the hydraulic oil cylinder II and the hydraulic motor so as to realize the extension of the hydraulic oil cylinder I and the hydraulic oil cylinder II and the positive and negative rotation of the hydraulic motor;
the proximity sensor is connected with the digital quantity input module, the proximity sensor transmits feedback signals of the hydraulic oil cylinder I, the hydraulic oil cylinder II and the hydraulic motor to the digital quantity input module, and the digital quantity input module transmits the signals to the CPU to confirm the accurate operation of the device; the method specifically comprises the following steps:
1) when a blowout precursor appears, the driller stops the normal pipe rod pulling operation procedure, suspends the last pipe rod to the wellhead, closes the hydraulic slip, clamps the oil pipe and prevents the oil pipe from falling;
2) pressing down a well control blowout prevention button of a controller in a driller room, closing a hydraulic blowout preventer below a well control platform, and simultaneously lifting a hydraulic oil cylinder of a plug valve vertical position adjusting mechanism to a working position;
3) a hydraulic oil cylinder II of the plug valve horizontal position adjusting mechanism drives an outer arm of the rotary shell to move to a working position above a wellhead;
4) a hydraulic oil cylinder of the plug valve vertical position adjusting mechanism descends to an initial position, a plug valve rotating power mechanism begins to descend by virtue of self weight, and meanwhile, a hydraulic motor of the plug valve rotating power mechanism rotates to drive the plug valve to start to be buckled up until the plug valve is screwed with a wellhead tubing coupling;
5) the hydraulic motor of the plug valve rotating power mechanism continues to rotate, the shearing pin is twisted off, and the hydraulic motor is separated from the plug valve;
6) lifting a hydraulic oil cylinder of the plug valve vertical position adjusting mechanism to a working position, and simultaneously exposing a pressure gauge arranged on the plug valve to display the pressure in the well;
7) the hydraulic well control blowout prevention cock device rotates the oil cylinder to act to drive the swing arm to return to the initial position;
8) a hydraulic oil cylinder of the hydraulic well control blowout prevention cock device descends to an initial position;
9) and completing the blowout prevention action by one-key well control.
The plug valve vertical position adjusting mechanism comprises a first hydraulic oil cylinder and a lifting sleeve, the bottom of a body of the first hydraulic oil cylinder is connected with a supporting seat, the upper portion of the supporting seat is connected with a guide post, the outer end of a piston of the first hydraulic oil cylinder is connected with the lifting sleeve on the upper portion, the lifting sleeve is sleeved on the guide post, the upper end of the lifting sleeve is connected with the plug valve horizontal position adjusting mechanism, and the plug valve horizontal position adjusting mechanism can rotate and is fixed to a set angle position through a limiting structure around the axis of the lifting sleeve.
The rotary power mechanism of the plug valve comprises a hydraulic motor and a motor fixing frame, the hydraulic motor is connected with the plug valve connecting piece through a speed reducing mechanism such as gear transmission arranged on the motor fixing frame, and the motor fixing frame is connected with the shell.
The plug valve horizontal position adjusting mechanism comprises a rotating part which realizes that the plug valve rotates in a horizontal plane around the axis of the lifting sleeve, the rotating part comprises a shell matched with the lifting sleeve, a second pressure oil cylinder driving the shell to rotate and a rotating arm connected with the shell, and an inner hole of the shell is matched with the excircle of the lifting sleeve; the hydraulic cylinder II is connected with the outer part of the lifting sleeve through a connecting plate, the hydraulic cylinder II is connected with the shell through a gear and rack transmission structure, a rack is connected with the end part of a piston of the hydraulic cylinder II, the gear is connected with a shaft, the rack is guided through a rack seat, the rack seat is connected with the connecting plate, the shaft is connected with an upper connecting cover, the gear and the shaft are arranged in an inner hole of the lifting sleeve, the upper connecting cover is connected with the shell into a whole, and the shell rotates for a preset angle around the lifting sleeve.
The plug valve horizontal position adjusting mechanism further comprises a linear moving part for realizing linear movement of the plug valve in the horizontal plane, the inner side of the linear moving part is movably connected with the rotating arm, the outer side of the linear moving part is connected with a motor fixing frame of a plug valve rotating power mechanism, and the linear moving part can extend out and retract to move under the guide of the rotating arm.
The lifting sleeve is provided with a limiting block for limiting the rotation angle of the shell around the lifting sleeve.
The plug valve connecting piece is axially provided with an axial through hole communicated with the plug valve, wherein the upper end of the axial through hole of the plug valve connecting piece is connected with a pressure gauge, and the pressure gauge is used for displaying the pressure in the well.
The lifting sleeve is characterized in that a guide structure is arranged on the supporting seat and comprises a fixed block and a guide post, the fixed block is connected with the upper portion of the supporting seat, the lower end of the guide post is connected with the supporting seat, a guide sleeve is arranged on the lifting sleeve, and the first guide sleeve is matched with the guide post.
The invention has the beneficial effects that:
1. according to the invention, manual operation of an operator on site is not needed, the controller in the driller room is pressed down to control the electromagnetic valves in the oil paths of the related oil cylinders and hydraulic motors so as to control the starting and stopping actions of the oil cylinders and the hydraulic motors, the automation degree is high, the working efficiency is high, the labor intensity of the operator is reduced, the oil pipe can be quickly blocked, the occurrence of blowout accidents is reduced, the safe and reliable operation of the operator and oil well equipment is ensured, the controller arranged on the well control blowout preventer can reduce the labor intensity of the operator, the operation and the monitoring are convenient, the real-time and remote monitoring is convenient to realize, and the well blowout accidents are prevented.
2. Because plug valve vertical position guiding mechanism includes hydraulic cylinder one, lift cover, and plug valve horizontal position guiding mechanism can rotate the angle of settlement round the lift cover axis, plug valve rotary power mechanism can adjust at the relative position of horizontal direction with plug valve horizontal position guiding mechanism, realizes that the plug valve is reliable in the rectilinear movement of the horizontal direction of hookup location and round the rotation of lift cover axis, guarantees that the plug valve is reliable in sealing connection position location, realizes screw-thread fit's tightening smoothly, avoids the sealed unreliable and leakage that the screw thread damage arouses.
3. The axial through hole that is linked together is equipped with through plug valve connecting piece and plug valve axial, and wherein the axial through hole upper end of plug valve connecting piece is connected with the manometer, shows the pressure in the well with the manometer, and the operator is according to showing the pressure in the well, can be real-time take corresponding countermeasure as required, avoids with the emergence that reduces follow-up accident.
4. The plug valve connecting piece is connected with the plug valve through reverse threads, a shearing pin is arranged between the plug valve connecting piece and the plug valve, and torque between the plug valve and an oil pipe when the shearing pin shears short can be guaranteed.
5. Through being equipped with guide structure on the supporting seat, first uide bushing and guide post cooperation guarantee the reliability that the lifting sleeve axial displacement goes up and down, avoid the atress damage between matched with structure.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view of section I of FIG. 3;
FIG. 5 is an enlarged view of section II of FIG. 3;
fig. 6 is a schematic diagram of a control circuit structure of the controller.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments.
As shown in fig. 1-6, a key well control blowout prevention process for workover treatment utilizes a wellhead blowout prevention device to perform blowout prevention, the wellhead blowout prevention device comprises a supporting seat 601, a plug valve 602, a plug valve horizontal position adjusting mechanism, a plug valve vertical position adjusting mechanism, a plug valve rotating power mechanism, a hydraulic blowout preventer and a controller, the upper part of the plug valve is connected with the plug valve rotating power mechanism through a plug valve connecting piece 603, the plug valve rotating power mechanism is connected with the outer side of the plug valve horizontal position adjusting mechanism, the inner side of the plug valve horizontal position adjusting mechanism is connected with the upper part of the plug valve vertical position adjusting mechanism, the plug valve horizontal position adjusting mechanism can swing in a horizontal plane along the vertical axis of the plug valve vertical position adjusting mechanism to set an angle, the plug valve vertical position adjusting mechanism is connected with the supporting seat 601 at the lower part, the height of the plug valve vertical position adjusting mechanism on the supporting seat can be adjusted, the lower part of the plug valve 602 is provided with a conical surface, the conical surface is provided with an external thread 6021, and the external thread is matched with the internal thread of the oil pipe. The bottom of the supporting seat 601 is connected with a wellhead platform. The piston of the hydraulic oil cylinder of the plug valve vertical position adjusting mechanism is controlled to move up and down, stretch and move, the hydraulic motor of the plug valve rotating power mechanism rotates forwards and backwards, and the piston of the hydraulic oil cylinder of the plug valve horizontal position adjusting mechanism moves horizontally and telescopically.
The controller comprises a CPU1, a digital input module 4, a digital output module 5, a proximity sensor 3, a well control blowout prevention button 2 and a relay 6, the controller adopts a Siemens 1500 series CPU (model 1511-1PN) controller, the CPU (1511-1PN) is used for controlling the program to run, the device can be ensured to run orderly according to the program, the digital input module 4 is used for receiving input signals of the control button and the proximity sensor, and the output module 5 is used for controlling the on-off of an electromagnetic valve 7, so that the telescopic action of the hydraulic oil cylinder I604 and the hydraulic oil cylinder II 617 and the forward and reverse rotation action of the hydraulic motor 627 are realized. The motor transmission unit 11 provides hydraulic kinetic energy required by operation for the pump station unit 10, and when no power supply is available in the operation field, the generator set 12 can be adopted to drive the pump station unit 10 to provide power. The blowout prevention button 2 is connected with the digital quantity input module 4, and the blowout prevention button 2 is used for setting and triggering manual and automatic operation of the controller.
The CPU1 of the controller transmits a control signal to the relay 6 through the digital quantity output module 5, and the relay 6 is used for controlling the actions of the electromagnetic valves 7 in the oil paths of the first hydraulic oil cylinder 604, the second hydraulic oil cylinder 617 and the hydraulic motor 627 so as to realize the extension and retraction of the first hydraulic oil cylinder 604 and the second hydraulic oil cylinder 617 and the forward and reverse rotation of the hydraulic motor 627. The proximity sensor 3 is connected with the digital quantity input module 4, the proximity sensor 3 transmits feedback signals of the hydraulic oil cylinder I604, the hydraulic oil cylinder II 617 and the hydraulic motor 627 to the digital quantity input module 4, and the digital quantity input module 4 transmits the signals to the CPU1 to confirm the accurate operation of the device.
The plug valve vertical position adjusting mechanism comprises a first hydraulic oil cylinder 604, a lifting sleeve 605 and a piston rod matched with the first hydraulic oil cylinder, wherein an oil cylinder fixing seat 606 is connected with the lower part of the base, the outer end of the piston rod is connected with an oil cylinder top block 607 through threads, and the oil cylinder top block is connected with the lifting sleeve 605. The inner hole of the lifting sleeve is matched with the outer cylindrical surface 608 on the upper portion of the supporting seat, and the inner hole of the lifting sleeve is guided by the outer cylindrical surface of the supporting seat to move up and down.
Be equipped with guide structure on the supporting seat, guide structure includes fixed block 609, guide post 610, the fixed block is connected with supporting seat upper portion, the lower extreme and the supporting seat of guide post are connected, be equipped with first uide bushing 611 on the lifting sleeve, first uide bushing 611 and guide post 610 cooperation.
The plug valve horizontal position adjusting mechanism comprises a rotary sleeve 612, a horizontal rotating arm 613, a vertical rotating shaft 614, a rack 615, a gear 616 and a second hydraulic cylinder 617, wherein the gear 616 is connected with the lower end of the vertical rotating shaft 614, the upper part of the vertical rotating shaft is connected with a bearing sleeve 618 through a bearing 637, the outer wall of the bearing sleeve 618 is connected with an inner hole of the lifting sleeve 605, the upper end surface of the rotary sleeve 612 is connected with a detachable upper end cover 638, the upper end cover 638 is connected with the upper part of the vertical rotating shaft 614, the outer side wall of the rotary sleeve 612 is connected with the horizontal rotating arm 613, the rack 615 is connected with a rack seat 636, the rack seat is connected with the outer end of a piston of the second hydraulic cylinder 617, the cylinder 617 is connected with the outer wall of the lifting sleeve 605, and a limiting block for limiting the rotation angle of the shell around the lifting sleeve is arranged on the lifting sleeve.
Plug valve rotary power unit includes hydraulic motor 627, motor support frame 628, and hydraulic motor is connected with the motor support frame, and the motor support frame is connected with horizontal rotation arm 613, and hydraulic motor power output shaft passes through the speed reduction structure and is connected with plug valve 602, the speed reduction structure includes to detain driving gear 630, to detain driven gear 631, the perpendicular plug valve transmission shaft 632 that sets up, the driving gear is connected with hydraulic motor power output shaft, and driven gear is connected with transmission shaft upper portion, and the transmission shaft passes through the bearing and is connected with the motor support frame, and it is fixed that the bearing gland is passed through to the bearing outer end, and the transmission shaft lower extreme is connected with plug valve connecting piece 633 upper portion, and plug valve 602 passes through reducing connecting festival 634 and plug valve connecting piece sub-unit connection. The upper part of the deceleration structure is provided with a protective cover 635.
Be equipped with plug valve connecting piece 633 and plug valve 602 isolating construction on reducing connecting joint 634, plug valve connecting piece 633 and plug valve 602 isolating construction include: plug valve connecting piece pinhole, reducing link pinhole at the horizontal direction that plug valve connecting piece 633, reducing link 634 hookup location set up respectively, plug valve connecting piece pinhole and the coaxial setting of reducing link pinhole, be equipped with plug valve connecting piece shearing pin bush 640 in the plug valve connecting piece pinhole, be equipped with reducing link shearing pin bush 641 in the reducing link pinhole, be equipped with shearing pin 642 in plug valve connecting piece shearing pin bush and reducing link shearing pin bush, the both ends of shearing pin 642 support respectively in plug valve connecting piece shearing pin bush and reducing link shearing pin bush hole, plug valve 602 and reducing link 634 are equipped with the axial through hole that is linked together, and wherein the upper end and the manometer 639 of reducing link 634 through-hole are connected.
The plug valve connecting piece is connected with the plug valve through reverse threads, a shearing pin is arranged between the plug valve connecting piece and the plug valve, and torque between the plug valve and an oil pipe when the shearing pin shears short can be guaranteed.
A one-key well control blowout prevention process for workover operation utilizes the hydraulic well control blowout prevention device, and specifically comprises the following steps:
1) when a blowout precursor appears, the driller stops the normal pipe rod pulling operation procedure, suspends the last pipe rod to the wellhead, closes the hydraulic slip, clamps the oil pipe and prevents the oil pipe from falling;
2) pressing down a well control blowout prevention button in a driller room, closing a hydraulic blowout preventer below a well control platform, and simultaneously lifting a hydraulic oil cylinder I11 of a plug valve vertical position adjusting mechanism to a working position;
3) a second hydraulic motor 23 or a second hydraulic oil cylinder of the plug valve horizontal position adjusting mechanism drives the rotating shell outer arm 141 to move to a working position above the wellhead;
4) a hydraulic oil cylinder of the plug valve vertical position adjusting mechanism descends to an initial position, a plug valve rotating power mechanism begins to descend by virtue of self weight, and meanwhile, a hydraulic motor 15 of the plug valve rotating power mechanism rotates to drive a plug valve 19 to start to be buckled up until the plug valve is screwed with a wellhead tubing coupling;
5) the hydraulic motor 15 of the plug valve rotating power mechanism continues to rotate, the shearing pin is twisted off, and the hydraulic motor 15 is separated from the plug valve;
6) lifting a hydraulic oil cylinder of the plug valve vertical position adjusting mechanism to a working position, and simultaneously exposing a pressure gauge arranged on the plug valve to display the pressure in the well;
7) the hydraulic well control blowout prevention cock device rotates the oil cylinder to act to drive the swing arm to return to the initial position;
8) a hydraulic oil cylinder of the hydraulic well control blowout prevention cock device descends to an initial position;
9) and completing the blowout prevention action by one-key well control.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (4)
1. The utility model provides a workover one-key well control blowout prevention process, includes supporting seat, plug valve horizontal position guiding mechanism, plug valve vertical position guiding mechanism, plug valve rotary power mechanism, hydraulic blowout preventer, plug valve upper portion is connected with plug valve rotary power mechanism through the plug valve connecting piece, plug valve rotary power mechanism is connected with plug valve horizontal position guiding mechanism's the outside, and plug valve horizontal position guiding mechanism's inboard is connected with plug valve vertical position guiding mechanism's upper portion, plug valve vertical position guiding mechanism is connected with the supporting seat of lower part, plug valve vertical position guiding mechanism height-adjustable on the supporting seat, the lower part of plug valve is equipped with the conical surface, is equipped with the external screw thread on the conical surface, external screw thread and oil pipe thread fit, characterized by still includes the controller, the controller is used for controlling hydraulic cylinder and hydraulic motor, the telescopic action of the hydraulic oil cylinder and the positive and negative rotation action of the hydraulic motor are realized; the plug valve horizontal position adjusting mechanism can swing for a set angle in a horizontal plane along a vertical axis of the plug valve vertical position adjusting mechanism;
the controller comprises a CPU, a digital quantity input module, a digital quantity output module, a proximity sensor, a well control blowout prevention button and a relay, wherein the controller is used for controlling program operation, the digital quantity input module is used for receiving input signals of the control button and the proximity sensor, the output module is used for controlling the on-off of a hydraulic motor and an electromagnetic valve in an oil circuit of an oil cylinder, the blowout prevention button is connected with the digital quantity input module and used for setting and triggering manual and automatic operation of the controller, the proximity sensor is connected with the digital quantity input module, the proximity sensor transmits feedback signals of the hydraulic oil cylinder and the hydraulic motor to the digital quantity input module, and the digital quantity input module transmits signals to the CPU to confirm accurate operation of the device, and the controller specifically comprises the following steps:
1) when a blowout precursor appears, the driller stops the normal pipe rod pulling operation procedure, suspends the last pipe rod to the wellhead, closes the hydraulic slip, clamps the oil pipe and prevents the oil pipe from falling;
2) pressing down a well control blowout prevention button of a controller in a driller room, closing a hydraulic blowout preventer below a well control platform, and simultaneously lifting a hydraulic oil cylinder of a plug valve vertical position adjusting mechanism to a working position;
3) a hydraulic motor II or a hydraulic oil cylinder II of the plug valve horizontal position adjusting mechanism drives the outer arm of the rotary shell to move to a working position above a wellhead;
4) a hydraulic oil cylinder of the plug valve vertical position adjusting mechanism descends to an initial position, a plug valve rotating power mechanism begins to descend by virtue of self weight, and simultaneously a hydraulic motor of the plug valve rotating power mechanism rotates to drive the plug valve to start to be buckled up until the plug valve is screwed with a wellhead tubing coupling;
5) the first hydraulic motor of the plug valve rotating power mechanism continues to rotate, the shearing pin is twisted off, and the first hydraulic motor is separated from the plug valve;
6) lifting a hydraulic oil cylinder of the plug valve vertical position adjusting mechanism to a working position, and simultaneously exposing a pressure gauge arranged on the plug valve to display the pressure in the well;
7) the hydraulic well control blowout prevention cock device rotates the oil cylinder to act to drive the swing arm to return to the initial position;
8) a hydraulic oil cylinder of the hydraulic well control blowout prevention cock device descends to an initial position;
9) completing one-key well control blowout prevention action;
the rotary power mechanism of the plug valve comprises a hydraulic motor and a motor support frame, the hydraulic motor is connected with the motor support frame, the motor support frame is connected with a horizontal rotating arm, a power output shaft of the hydraulic motor is connected with the plug valve through a speed reducing structure, the speed reducing structure comprises a top-fastening driving gear, a top-fastening driven gear and a vertically arranged plug valve transmission shaft, the driving gear is connected with a power output shaft of the hydraulic motor, the driven gear is connected with the upper part of the transmission shaft, the transmission shaft is connected with the motor support frame through a bearing, the outer end of the bearing is fixed through a bearing gland, the lower end of the transmission shaft is connected with the upper part of a plug valve connecting piece, the plug valve is connected with the lower part of the plug valve connecting piece through a reducing connecting joint, and the upper part of the speed reducing structure is provided with a protective cover;
be equipped with plug valve connecting piece and plug valve isolating construction on the reducing connecting section, plug valve connecting piece and plug valve isolating construction include: the horizontal direction's that sets up respectively at plug valve connecting piece, reducing link hookup location plug connector pinhole, reducing link pinhole, plug valve connecting piece pinhole and the coaxial setting of reducing link hookup pinhole, be equipped with plug valve connecting piece shearing pin bush in the plug valve connecting piece pinhole, be equipped with reducing link shearing pin bush in the reducing link pinhole, be equipped with the shearing pin in plug valve connecting piece shearing pin bush and reducing link shearing pin bush, the both ends of shearing pin support respectively in plug valve connecting piece shearing pin bush and reducing link shearing pin bush hole, plug valve and reducing link are equipped with the axial through-hole that is linked together, and wherein the upper end and the manometer of reducing link through-hole are connected.
2. The key well control blowout prevention process for workover treatment according to claim 1, wherein the plug valve vertical position adjusting mechanism comprises a first hydraulic oil cylinder, a lifting sleeve and a piston rod matched with the oil cylinder, an oil cylinder fixing seat is connected with the lower part of the supporting seat, the outer end of the piston rod is hinged with an oil cylinder top block through a pin shaft, the oil cylinder top block is connected with the lifting sleeve, an inner hole of the lifting sleeve is matched with an outer cylindrical surface of the upper part of the supporting seat, and the inner hole of the lifting sleeve is guided by the outer cylindrical surface of the supporting seat to realize the up-and-down lifting movement.
3. The key well control blowout prevention process of the workover treatment according to claim 2, wherein the supporting seat is provided with a guide structure, the guide structure comprises a fixed block and a guide post, the fixed block is connected with the upper part of the supporting seat, the lower end of the guide post is connected with the supporting seat, the lifting sleeve is provided with a first guide sleeve, and the first guide sleeve is matched with the guide post.
4. The key well control blowout prevention process for workover treatment according to claim 1, wherein the plug valve horizontal position adjusting mechanism comprises a rotary sleeve at the upper part, a horizontal rotating arm, a vertical rotating shaft, a rack, a gear and a hydraulic oil cylinder II, the gear is connected with the lower end of the vertical rotating shaft, the upper part of the vertical rotating shaft is connected with a bearing sleeve through a bearing, the outer wall of the bearing sleeve is connected with an inner hole of the lifting sleeve, the upper end surface of the rotary sleeve is connected with a detachable upper end cover, the upper end cover is connected with the upper part of the vertical rotating shaft, the outer side wall of the rotary sleeve is connected with the horizontal rotating arm, the rack is connected with a rack seat, the rack seat is connected with the outer end of a piston of the hydraulic oil cylinder II, the oil cylinder is connected with the outer wall of the lifting sleeve, and a limiting block for limiting the rotation angle of the shell around the lifting sleeve is arranged on the lifting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550812A (en) * | 2009-05-09 | 2009-10-07 | 中国石化股份胜利油田分公司河口采油厂 | Blowout dealing workover rig |
| CN201416405Y (en) * | 2009-05-09 | 2010-03-03 | 中国石化股份胜利油田分公司河口采油厂 | Rush spray operation machine |
| CN201599004U (en) * | 2010-02-05 | 2010-10-06 | 中国石油集团川庆钻探工程有限公司钻采工艺技术研究院 | Installing check valve device suitable for out-of-control oil and gas well |
| CN102409996A (en) * | 2011-12-07 | 2012-04-11 | 辽宁石油机械制造有限公司 | Automatic blowout prevention system for oil-field workover rig |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2990897A1 (en) * | 2017-01-06 | 2018-07-06 | Oil Lift Technology Inc. | Wellhead assembly with integrated tubing rotator |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550812A (en) * | 2009-05-09 | 2009-10-07 | 中国石化股份胜利油田分公司河口采油厂 | Blowout dealing workover rig |
| CN201416405Y (en) * | 2009-05-09 | 2010-03-03 | 中国石化股份胜利油田分公司河口采油厂 | Rush spray operation machine |
| CN201599004U (en) * | 2010-02-05 | 2010-10-06 | 中国石油集团川庆钻探工程有限公司钻采工艺技术研究院 | Installing check valve device suitable for out-of-control oil and gas well |
| CN102409996A (en) * | 2011-12-07 | 2012-04-11 | 辽宁石油机械制造有限公司 | Automatic blowout prevention system for oil-field workover rig |
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