CN114109291B - Low-profile anti-top anti-torsion pressurizing clamping device and method - Google Patents
Low-profile anti-top anti-torsion pressurizing clamping device and method Download PDFInfo
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- CN114109291B CN114109291B CN202010900921.9A CN202010900921A CN114109291B CN 114109291 B CN114109291 B CN 114109291B CN 202010900921 A CN202010900921 A CN 202010900921A CN 114109291 B CN114109291 B CN 114109291B
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- 238000000034 method Methods 0.000 title abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 79
- 238000007789 sealing Methods 0.000 claims description 41
- 239000010720 hydraulic oil Substances 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000005553 drilling Methods 0.000 abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 11
- 239000003921 oil Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
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- 239000004568 cement Substances 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
- E21B23/10—Tools specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The utility model discloses a low-profile anti-jacking anti-twisting pressurizing clamping device and a method, comprising an outer shell assembly, a clamping mechanism and a lifting mechanism; the clamping mechanism is transversely arranged on the outer shell assembly, and the clamping center line of the clamping mechanism is consistent with the center line of the outer shell assembly; the lifting mechanism is vertically arranged on the outer shell assembly, namely the upper end of the lifting mechanism is connected with the outer shell assembly, and the lower end of the lifting mechanism is connected with the blowout preventer of the wellhead. The utility model can clamp the pipe column at any time to press and lift, and has flexible and convenient installation and operation; the low clamping structure improves the operation efficiency; the clamping screw drill pipe column can be used for pressurized drilling, the drilling speed is improved, the upward pushing force of the pipe column can be overcome when the anti-pushing pipe column is lifted and lowered, and the safe operation of an oil-water well is realized.
Description
Technical Field
The utility model relates to the technical field of safety auxiliary tools for oil field wellheads, in particular to a low-profile anti-top anti-torsion pressurizing clamping device and method.
Background
In the production process of the middle and shallow sandstone oil reservoirs, due to loose stratum and large production pressure difference, the stratum often has serious sand production, so that the problems of screen pipe breakage or screen pipe blockage, rapid water rising and the like are caused, the production effect of an oil well is poor, the development value is low, oil extraction plants can take temporary well sealing measures, but over time, the wells are regulated according to geological process or change of surrounding environment, the wells are required to be re-mined, the wells are required to be sealed permanently, and no matter which measures are required to be drilled by the original simple well sealing plugs.
The conventional drilling, plugging and milling operation of the oil field generally adopts a screw drilling tool for construction, the screw drilling tool is pressurized for ensuring that drilling is performed when pressure exists at the bottom of the well or a hard chemical plug is drilled, the drilling pressure of the drilling tool depends on the self weight of the pipe column, the drilling pressure of the drilling tool is controlled by driller depending on experience and site conditions, when the improper drilling pressure is excessively large, the pipe column is driven to rotate reversely, so that a circulating hose is twisted and wound to bring safety risk, and the pipe column is easy to trip; the device is particularly suitable for shallow plug drilling, has the advantages of few tubular columns on a screw drilling tool, light dead weight, slow drilling length due to small pressurization and low efficiency, can cause the construction tubular column to be jacked up if the pressure in a well is released suddenly in the drilling process, and can prevent well head from being damaged by a flying pipe if no effective jacking prevention measures are taken, so that the device is provided for preventing the jacking and torsion of the shallow plug drilling process.
Publication (bulletin) number: CN203175445U, publication (date): 2013-09-04 is a wellhead pressurizing drilling plug device. In order to overcome the defects that the drilling efficiency is low and potential safety hazards exist in the conventional drilling plug operation, the screw drilling tool is positioned in a hydraulic cylinder, and a flange is arranged at the lower end of the hydraulic cylinder; the upper end of the hydraulic cylinder is fixedly connected with an end cover of the anti-torsion assembly; the upper end of the screw drilling tool is fixedly provided with a short joint, a piston and a piston rod in sequence, and the piston is positioned in the hydraulic cylinder; the centers of the pup joint, the piston and the piston rod are provided with axial through holes; the cement truck is fixedly connected with the hose, the elbow, the union and the piston rod in sequence and then is communicated with the axial through hole of the piston rod; the outer circumference of the piston rod is provided with an anti-reverse torsion assembly; the radial through hole is arranged below the end cover at the upper end part of the hydraulic cylinder and is communicated with the pressure testing pump through a pressurizing pipeline, and a pressure release valve and a hydraulic check valve are sequentially arranged on the pressurizing pipeline from the hydraulic cylinder to the pressure testing pump. The screw drill has the beneficial effects that the screw drill is reasonable in structure and can timely eliminate reactive torque generated in the working process of the screw drill; the pressure in the well bore can be safely controlled during operation.
Publication (bulletin) number: CN201246105Y, publication (date): 2009-05-27 relates to a pressure device for applying pressure to an inner sleeve or screen of a well at a well head, which is a recyclable well head pressure device comprising a drill collar, a sleeve and a pressure-bearing tray; the lower end of the drill collar is fixedly arranged with the upper end of the pressure-bearing tray; a sleeve is arranged outside the drill collar, and the lower end of the sleeve is fixedly arranged together with the pressure-bearing tray; heavy metals are poured into the sleeve; the lower end of the pressure-bearing tray is fixedly arranged with the upper end of the high-pressure circulating short circuit; the lower end of the high-pressure circulating short circuit is fixedly arranged with the upper end of the high-pressure union. The utility model has reasonable and compact structure, is convenient for on-site operation, can be used on drilling machines of various types, and can circulate mud while pressurizing the casing or the screen pipe, thereby being convenient for removing rock debris in the annulus between the casing and the well hole, being more beneficial to the running of the casing or the screen pipe, greatly improving the working efficiency and reducing the potential safety hazard.
Publication (bulletin) number: CN106869844a, publication (date): 2017-06-20 provides a bridge plug drill grinds and prevents turning round device and anti-torque monitoring system, this bridge plug drill grinds and prevents turning round device, including well head connecting piece, locate the clamping mechanism of well head connecting piece top, clamping mechanism can rotate for the well head connecting piece, be equipped with the supporter between well head connecting piece and the clamping mechanism, the last pressure disk that overlaps in proper order from top to bottom of supporter, steel ball seat, preforming, clamping mechanism and pressure disk fixed connection, steel ball seat and preforming fixed connection, be equipped with first belleville spring under the preforming. This prevent turning round device can press from both sides tight oil pipe through clamping mechanism, prevents its reversal, simple structure, safe and reliable can effectively improve the efficiency of construction. The bridge plug drilling and grinding anti-torque monitoring system can collect main drilling and grinding bridge plug construction data such as torque, pump pressure, displacement and the like, realize collection curve display, can set an overrun alarm value of torque, and automatically give an audible and visual alarm when the torque reaches the alarm value, prompt a driller to take measures in time so as to release the anti-torque and ensure construction safety.
Publication (bulletin) number: CN2350519Y, publication (date): 1999-11-24 relates to a screw drill anti-torsion device, belongs to a special device in the operation work of a petroleum industry system, and is a special tool for preventing the oil pipe from turning upside down in the construction process of the screw drill in the operation of an oil-water well. The utility model has the important characteristics of being composed of Fang Youguan and a torque block, and has the greatest advantages of solving the safety problem in construction, realizing arbitrary lifting operation of a pipe column, along with simple structure and convenient loading, unloading and transportation.
In summary, the technical scheme of the above disclosed technology, the technical problems to be solved and the generated beneficial effects are different from those of the present utility model, or the technical field or application occasion is different, and the technical documents disclosed above do not have technical teaching aiming at more technical features of the present utility model, the technical problems to be solved and the beneficial effects.
Disclosure of Invention
The utility model aims to provide the low-profile anti-jacking anti-torsion pressurizing clamping device and the method for overcoming the defects in the prior art, so that a tubular column can be clamped at any time to be pressurized up and down, and the installation operation is flexible and convenient; the low clamping structure improves the operation efficiency; the clamping screw drill pipe column can be used for pressurized drilling, the drilling speed is improved, the upward pushing force of the pipe column can be overcome when the anti-pushing pipe column is lifted and lowered, and the safe operation of an oil-water well is realized.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a low-profile anti-top anti-torsion pressurizing clamping device comprises an outer shell assembly, a clamping mechanism and a lifting mechanism;
the clamping mechanism is transversely arranged on the outer shell assembly, and the clamping center line of the clamping mechanism is consistent with the center line of the outer shell assembly;
the lifting mechanism is vertically arranged on the outer shell assembly, namely the upper end of the lifting mechanism is connected with the outer shell assembly, and the lower end of the lifting mechanism is connected with the blowout preventer of the wellhead.
Further, an axial central channel is formed in the center of the outer shell assembly, a left mounting hole which is transversely penetrated is formed in the left side face of the outer shell assembly, an expanding cavity is processed in the middle of the left mounting hole to serve as a left piston cavity, a right mounting hole which is transversely penetrated is formed in the right side face of the outer shell assembly, an expanding cavity is processed in the middle of the right mounting hole to serve as a right piston cavity, a front mounting groove is formed in the front side face of the outer shell assembly, and a rear mounting groove is formed in the rear side face of the outer shell assembly.
Further, the clamping mechanism comprises a left thrust piston assembly, a right thrust piston assembly, a left flashboard variable diameter slip and a right flashboard variable diameter slip;
the left thrust piston assembly comprises a left thrust outer cylinder and a left thrust piston, the left thrust piston slides in the left thrust outer cylinder, the left thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the left thrust piston is inserted into a left mounting hole of the outer shell assembly;
the rear end of the left flashboard variable diameter slip is fixedly connected with the front end of the left thrust piston, and the front end surface of the left flashboard variable diameter slip is provided with anti-slip teeth;
the right thrust piston assembly comprises a right thrust outer cylinder and a right thrust piston, the right thrust piston slides in the right thrust outer cylinder, the right thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the right thrust piston is inserted into a right mounting hole of the outer shell assembly;
the rear end of the right flashboard variable diameter slip is fixedly connected with the front end of the right thrust piston, and the front end surface of the right flashboard variable diameter slip is provided with anti-slip teeth;
the left thrust piston assembly and the right thrust piston assembly are identical in structure and are symmetrically arranged, and are used for driving the left flashboard variable diameter slips and the right flashboard variable diameter slips; the left flashboard reducing slips and the right flashboard reducing slips are identical in structure and are symmetrically arranged, and are used for clamping a pipe column passing through an axial central channel of the outer shell assembly.
Further, a sealing ring is arranged on the inner wall of the left mounting hole and used for sealing the left port and the right port of the left piston cavity from leakage, and the outer shell assembly is provided with a left hydraulic oil hole communicated with the left piston cavity; and a sealing ring is arranged on the inner wall of the right mounting hole and used for sealing the left port and the right port of the right piston cavity without leakage, and the outer shell assembly is provided with a right hydraulic oil hole communicated with the right piston cavity.
Further, the lifting lug is arranged on the upper end face of the outer shell assembly, a long unthreaded hole is further formed in the edge of the outer shell assembly, and the long unthreaded hole is connected with a blowout preventer of a wellhead through a bolt.
Further, the lifting mechanism comprises a front lifting mechanism and a rear lifting mechanism, wherein the front lifting mechanism is clamped into a front mounting groove of the outer shell assembly and is fixedly connected with a front short unthreaded hole formed in the front edge of the outer shell assembly through a bolt, and the rear lifting mechanism is clamped into a rear mounting groove of the outer shell assembly and is fixedly connected with a rear short unthreaded hole formed in the rear edge of the outer shell assembly through a bolt; the front lifting mechanism and the rear lifting mechanism are identical in structure and are symmetrically arranged.
Further, the front lifting mechanism or the rear lifting mechanism is a lifting pressure cylinder assembly, and the lifting pressure cylinder assembly comprises a lifting pressure cylinder sleeve and a threaded piston rod body;
the lifting pressurizing cylinder sleeve is fixedly connected with a front short unthreaded hole formed in the front edge of the outer shell assembly through a bolt, a vertical piston cavity is formed in the lifting pressurizing cylinder sleeve, and a hydraulic oil inlet and outlet hole communicated with the vertical piston cavity is formed in the lifting pressurizing cylinder sleeve;
the upper end of the threaded piston rod body is provided with a piston head which extends into a vertical piston cavity of the lifting pressurizing cylinder sleeve, and the lower end of the threaded piston rod body is provided with a threaded end for connecting with a blowout preventer of a wellhead.
Further, the lifting pressurizing cylinder assembly further comprises a sealing back cap connector, the sealing back cap connector is connected to the lower port of the vertical piston cavity and is sealed, and meanwhile, a sealing ring is arranged on the inner wall of the sealing back cap connector and used for sealing the outer wall of the threaded piston rod body.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the application method of the low-profile anti-top anti-torsion pressurizing clamping device comprises the following steps:
when the pressure in the well is increased to push up the pipe column or the pipe column is required to be pressurized to be lifted down in construction, the thrust piston assembly drives the flashboard variable diameter slip to inwards run through remote hydraulic control operation, and the flashboard variable diameter slip is closed to clamp the pipe column;
under the drive of lifting the pressurized cylinder assembly, the whole clamping pipe column of the anti-jacking anti-torsion pressurizing clamping device is lifted or pressed down through the bolt connection with the outer shell assembly, after the pipe column is lifted or pressed down to the maximum stroke, the flashboard reducing slips loosen the pipe column, the whole anti-jacking anti-torsion pressurizing clamping device is lifted under the action of hydraulic pressure, the pipe column is lifted or pressed down again, and the steps are repeated to lift the pipe column under the action of pressure.
Compared with the prior art, the utility model has the following beneficial effects:
1. the device adopts the internal structural scheme that the lifting pressure cylinder assembly is internally arranged in the anti-jacking anti-torsion pressurizing clamping device, is arranged on the wellhead four-way joint along with the wellhead blowout preventer, and can clamp the pipe column at any time to jack when the pressure in the well is up or the drilling pipe column needs to jack when the pressure is up or down, so that the installation operation is flexible and convenient;
2. the low-profile clamping structure of the device does not use a two-layer platform and a large-scale operation device with pressure, so that the operation efficiency is improved;
3. the clamping screw drill pipe column can be used for pressurized drilling, the drilling speed is improved, the upward pushing force of the pipe column can be overcome when the anti-pushing pipe column is lifted and lowered, and the safe operation of an oil-water well is realized.
4. The flashboard slips are reducing slips, can clamp a combined pipe column of 73mm oil pipes and 89mm oil pipes, and realize a quick loading and tripping process of the pipe column.
Drawings
FIG. 1 is a schematic diagram of wellhead installation of a low profile anti-toppling anti-torsionproof compression chucking device of the present utility model;
FIG. 2 is a schematic diagram of a wellhead during operation of a conventional oil-water well of the prior art;
FIG. 3 is a schematic diagram of a front cross-sectional structure of a low profile anti-toppling anti-torsioning compression chucking device of the present utility model;
FIG. 4 is a schematic diagram of the front structure of a low profile anti-toppling anti-twisting compression chucking device of the present utility model;
FIG. 5 is a schematic top view of a low profile anti-toppling anti-torsionproof compression chucking device in accordance with the present utility model;
FIG. 6 is a schematic side sectional view of a low profile anti-toppling anti-torsionproof compression chucking device in accordance with the present utility model.
In the figure: 1-a top-proof torsion-proof pressurizing clamping device; 2-semi-fully enclosed blowout preventer; 3-a wellhead four-way joint;
the device comprises an outer shell assembly 1-1, a thrust piston assembly 1-2, a flashboard slip 1-3 and a lifting and pressurizing cylinder assembly 1-4;
the hydraulic oil hole is 1-1-1; 1-1-2 long light holes; 1-1-3 of short light holes;
lifting the pressurizing cylinder sleeve 1-4-1 and sealing the back cap joint 1-4-2; threaded piston rod body 1-4-3.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
referring to fig. 1 to 6, the present utility model provides a technical solution:
a low-profile anti-top anti-torsion pressurizing clamping device comprises an outer shell assembly, a clamping mechanism and a lifting mechanism;
the clamping mechanism is transversely arranged on the outer shell assembly, and the clamping center line of the clamping mechanism is consistent with the center line of the outer shell assembly;
the lifting mechanism is vertically arranged on the outer shell assembly, namely the upper end of the lifting mechanism is connected with the outer shell assembly, and the lower end of the lifting mechanism is connected with the blowout preventer of the wellhead.
Further, an axial central channel is formed in the center of the outer shell assembly, a left mounting hole which is transversely penetrated is formed in the left side face of the outer shell assembly, an expanding cavity is processed in the middle of the left mounting hole to serve as a left piston cavity, a right mounting hole which is transversely penetrated is formed in the right side face of the outer shell assembly, an expanding cavity is processed in the middle of the right mounting hole to serve as a right piston cavity, a front mounting groove is formed in the front side face of the outer shell assembly, and a rear mounting groove is formed in the rear side face of the outer shell assembly.
Further, the clamping mechanism comprises a left thrust piston assembly, a right thrust piston assembly, a left flashboard variable diameter slip and a right flashboard variable diameter slip;
the left thrust piston assembly comprises a left thrust outer cylinder and a left thrust piston, the left thrust piston slides in the left thrust outer cylinder, the left thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the left thrust piston is inserted into a left mounting hole of the outer shell assembly;
the rear end of the left flashboard variable diameter slip is fixedly connected with the front end of the left thrust piston, and the front end surface of the left flashboard variable diameter slip is provided with anti-slip teeth;
the right thrust piston assembly comprises a right thrust outer cylinder and a right thrust piston, the right thrust piston slides in the right thrust outer cylinder, the right thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the right thrust piston is inserted into a right mounting hole of the outer shell assembly;
the rear end of the right flashboard variable diameter slip is fixedly connected with the front end of the right thrust piston, and the front end surface of the right flashboard variable diameter slip is provided with anti-slip teeth;
the left thrust piston assembly and the right thrust piston assembly are identical in structure and are symmetrically arranged, and are used for driving the left flashboard variable diameter slips and the right flashboard variable diameter slips; the left flashboard reducing slips and the right flashboard reducing slips are identical in structure and are symmetrically arranged, and are used for clamping a pipe column passing through an axial central channel of the outer shell assembly.
Further, a sealing ring is arranged on the inner wall of the left mounting hole and used for sealing the left port and the right port of the left piston cavity from leakage, and the outer shell assembly is provided with a left hydraulic oil hole communicated with the left piston cavity; and a sealing ring is arranged on the inner wall of the right mounting hole and used for sealing the left port and the right port of the right piston cavity without leakage, and the outer shell assembly is provided with a right hydraulic oil hole communicated with the right piston cavity.
Further, the lifting lug is arranged on the upper end face of the outer shell assembly, a long unthreaded hole is further formed in the edge of the outer shell assembly, and the long unthreaded hole is connected with a blowout preventer of a wellhead through a bolt.
Further, the lifting mechanism comprises a front lifting mechanism and a rear lifting mechanism, wherein the front lifting mechanism is clamped into a front mounting groove of the outer shell assembly and is fixedly connected with a front short unthreaded hole formed in the front edge of the outer shell assembly through a bolt, and the rear lifting mechanism is clamped into a rear mounting groove of the outer shell assembly and is fixedly connected with a rear short unthreaded hole formed in the rear edge of the outer shell assembly through a bolt; the front lifting mechanism and the rear lifting mechanism are identical in structure and are symmetrically arranged.
Further, the front lifting mechanism or the rear lifting mechanism is a lifting pressure cylinder assembly, and the lifting pressure cylinder assembly comprises a lifting pressure cylinder sleeve and a threaded piston rod body;
the lifting pressurizing cylinder sleeve is fixedly connected with a front short unthreaded hole formed in the front edge of the outer shell assembly through a bolt, a vertical piston cavity is formed in the lifting pressurizing cylinder sleeve, and a hydraulic oil inlet and outlet hole communicated with the vertical piston cavity is formed in the lifting pressurizing cylinder sleeve;
the upper end of the threaded piston rod body is provided with a piston head which extends into a vertical piston cavity of the lifting pressurizing cylinder sleeve, and the lower end of the threaded piston rod body is provided with a threaded end for connecting with a blowout preventer of a wellhead.
Further, the lifting pressurizing cylinder assembly further comprises a sealing back cap connector, the sealing back cap connector is connected to the lower port of the vertical piston cavity and is sealed, and meanwhile, a sealing ring is arranged on the inner wall of the sealing back cap connector and used for sealing the outer wall of the threaded piston rod body.
As shown in fig. 1, a 1-roof anti-twist compression clamping device; 2-semi-fully enclosed blowout preventer; 3-well head cross. The outside needs to be connected with a hydraulic power system to provide hydraulic power for the device. The anti-top anti-torsion pressurizing clamping device 1 and the semi-full-sealing blowout preventer 2 are fastened through bolt connection, and the semi-full-sealing blowout preventer 2 and the wellhead four-way 3 are fastened through bolt connection.
As shown in fig. 2, in the conventional operation, the semi-full-seal blowout preventer 4 is mounted on the wellhead large four-way joint 5 to perform the oil pipe lifting and lowering operation.
As shown in FIG. 3, the anti-jacking anti-torsion pressurizing clamping device 1 consists of an outer shell assembly 1-1, a thrust piston assembly 1-2, a flashboard slip 1-3 and a lifting pressurizing cylinder assembly 1-4, wherein the thrust piston assembly 1-2, the flashboard reducing slip 1-3 and the lifting pressurizing cylinder assembly 1-4 are symmetrically installed by taking a central line as a center, the thrust piston assembly 1-2 and the flashboard reducing slip 1-3 are embedded in the outer shell assembly through bolts and a centralizing sealing structure in the outer shell assembly, 2 hydraulic oil holes 1-1-1 are designed on the outer surface of the outer shell assembly, square grooves are formed in the front and the rear surfaces of the outer shell assembly, and the lifting pressurizing cylinder assembly is arranged in the square grooves and connected with the outer shell assembly through bolts.
As shown in FIG. 4, the outer casing assembly 1-1 is provided with 4 long light holes 1-1-2 and short light holes 1-1-3 which are vertically transparent and are used for connecting the semi-full-sealing blowout preventer and the lifting and pressurizing cylinder assembly 1-4 through bolts.
As shown in FIG. 5, the lifting and pressurizing cylinder assembly 1-4 consists of a lifting and pressurizing cylinder sleeve 1-4-1, a sealing back cap joint 1-4-2 and a threaded piston rod body 1-4-3, wherein the threaded piston rod body 1-4-3 is fixed inside the lifting and pressurizing cylinder sleeve 1-4-1 through the sealing back cap joint 1-4-2, the lifting and pressurizing cylinder sleeve 1-4-1 and an outer shell assembly 1-1 are connected into a whole through bolts, the outer surface of the lifting and pressurizing cylinder sleeve 1-4-1 is provided with an inlet and outlet hydraulic oil hole 1-4-1-1 which is connected with an external hydraulic power source, and the lifting and pressurizing cylinder sleeve 1-4-1 is driven by the outer shell assembly 1-1 and the whole anti-top anti-torsion pressurizing device 1 to move up and down under the hydraulic control operation.
The anti-top anti-torsion pressurizing clamping device 1 adopts remote hydraulic control operation, an external connection hydraulic power source provides hydraulic power for the anti-top anti-torsion pressurizing clamping device 1 and the lifting pressure cylinder assembly 1-4, the wellhead blowout preventer 2 is arranged on the wellhead four-way 3 during operation, and the anti-top anti-torsion pressurizing clamping device 1 is arranged on the wellhead blowout preventer 2 through wellhead bolts. The external connection hydraulic power source is in the prior art, and the hydraulic power source can be directly connected and applied.
When the operation is carried out, if the phenomenon of pipe column jacking does not occur or the pipe column is not required to be pressurized to be lifted, the anti-jacking anti-torsion pressurizing clamping device 1 is arranged at a wellhead for standby, the flashboard reducing slips 1-3 are completely opened, and the pipe column is lifted and lowered to carry out conventional operation by using wellhead equipment as shown in fig. 2. When the pressure in the well rises to top the pipe column or the pipe column is required to be pressurized and lifted down in construction, the flashboard reducing slips 1-3 are closed through remote hydraulic control operation to clamp the pipe column, the whole clamping pipe column of the anti-top anti-torsion pressurizing and clamping device 1 is lifted or pressed down through the bolt connection with the outer shell assembly 1-1 under the driving of the lifting and pressurizing cylinder assembly 1-4, after the pipe column is lifted or pressed down to the maximum stroke, the flashboard reducing slips 1-3 loosen the pipe column, the whole anti-top anti-torsion pressurizing and clamping device 1 is lifted up and down under the action of hydraulic pressure, the pipe column is again clamped, and the operation of lifting and pressing down the pipe column is repeated.
The utility model relates to an anti-jacking anti-torsion pressurizing clamping device suitable for shallow drilling and milling construction of a screw drilling tool, which is internally provided with a hydraulic blowout preventer, wherein a thrust piston assembly is connected with a flashboard slip and is internally arranged in an outer shell assembly, a square groove is formed in the front and rear surfaces of the outer shell assembly, a lifting pressurizing cylinder assembly is internally arranged in the outer shell assembly, the height is reduced, the lifting pressurizing cylinder assembly consists of a lifting pressurizing cylinder sleeve, a sealing back cap joint and a threaded piston rod body, the principle is that the lifting pressurizing cylinder sleeve can move up and down under the action of external hydraulic pressure, the lifting pressurizing cylinder sleeve is connected with the outer shell assembly through a bolt, the whole device can clamp a pipe column to realize loading lifting and pressing along with the up and down movement of the cylinder sleeve, the pressurizing clamping device is arranged above the wellhead blowout preventer assembly in the construction process, when the pipe column is jacked or needs to be pressurized and lifted through the bolt connection, and a hydraulic control system transmits power to drive the flashboard to clamp the pipe column in the operation process, and simultaneously transmits the hydraulic pressure to the built-in lifting pressurizing cylinder assembly to control the pipe column to lift, so as to play the role of anti-jacking anti-torsion, and anti-torsion safety is realized.
Example 2:
referring to fig. 1 to 6, the present utility model provides a technical solution:
a low-profile anti-top anti-torsion pressurizing clamping device comprises an outer shell assembly, a clamping mechanism and a lifting mechanism;
the clamping mechanism is transversely arranged on the outer shell assembly, and the clamping center line of the clamping mechanism is consistent with the center line of the outer shell assembly;
the lifting mechanism is vertically arranged on the outer shell assembly, namely the upper end of the lifting mechanism is connected with the outer shell assembly, and the lower end of the lifting mechanism is connected with the blowout preventer of the wellhead.
Further, an axial central channel is formed in the center of the outer shell assembly, a left mounting hole which is transversely penetrated is formed in the left side face of the outer shell assembly, an expanding cavity is processed in the middle of the left mounting hole to serve as a left piston cavity, a right mounting hole which is transversely penetrated is formed in the right side face of the outer shell assembly, an expanding cavity is processed in the middle of the right mounting hole to serve as a right piston cavity, a front mounting groove is formed in the front side face of the outer shell assembly, and a rear mounting groove is formed in the rear side face of the outer shell assembly.
Further, the clamping mechanism comprises a left thrust piston assembly, a right thrust piston assembly, a left flashboard variable diameter slip and a right flashboard variable diameter slip;
the left thrust piston assembly comprises a left thrust outer cylinder and a left thrust piston, the left thrust piston slides in the left thrust outer cylinder, the left thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the left thrust piston is inserted into a left mounting hole of the outer shell assembly;
the rear end of the left flashboard variable diameter slip is fixedly connected with the front end of the left thrust piston, and the front end surface of the left flashboard variable diameter slip is provided with anti-slip teeth;
the right thrust piston assembly comprises a right thrust outer cylinder and a right thrust piston, the right thrust piston slides in the right thrust outer cylinder, the right thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the right thrust piston is inserted into a right mounting hole of the outer shell assembly;
the rear end of the right flashboard variable diameter slip is fixedly connected with the front end of the right thrust piston, and the front end surface of the right flashboard variable diameter slip is provided with anti-slip teeth;
the left thrust piston assembly and the right thrust piston assembly are identical in structure and are symmetrically arranged, and are used for driving the left flashboard variable diameter slips and the right flashboard variable diameter slips; the left flashboard reducing slips and the right flashboard reducing slips are identical in structure and are symmetrically arranged, and are used for clamping a pipe column passing through an axial central channel of the outer shell assembly.
Further, a sealing ring is arranged on the inner wall of the left mounting hole and used for sealing the left port and the right port of the left piston cavity from leakage, and the outer shell assembly is provided with a left hydraulic oil hole communicated with the left piston cavity; and a sealing ring is arranged on the inner wall of the right mounting hole and used for sealing the left port and the right port of the right piston cavity without leakage, and the outer shell assembly is provided with a right hydraulic oil hole communicated with the right piston cavity.
Further, the lifting lug is arranged on the upper end face of the outer shell assembly, a long unthreaded hole is further formed in the edge of the outer shell assembly, and the long unthreaded hole is connected with a blowout preventer of a wellhead through a bolt.
Example 3:
referring to fig. 1 to 6, the present utility model provides a technical solution:
a low-profile anti-top anti-torsion pressurizing clamping device comprises an outer shell assembly, a clamping mechanism and a lifting mechanism;
the clamping mechanism is transversely arranged on the outer shell assembly, and the clamping center line of the clamping mechanism is consistent with the center line of the outer shell assembly;
the lifting mechanism is vertically arranged on the outer shell assembly, namely the upper end of the lifting mechanism is connected with the outer shell assembly, and the lower end of the lifting mechanism is connected with the blowout preventer of the wellhead.
Further, an axial central channel is formed in the center of the outer shell assembly, a left mounting hole which is transversely penetrated is formed in the left side face of the outer shell assembly, an expanding cavity is processed in the middle of the left mounting hole to serve as a left piston cavity, a right mounting hole which is transversely penetrated is formed in the right side face of the outer shell assembly, an expanding cavity is processed in the middle of the right mounting hole to serve as a right piston cavity, a front mounting groove is formed in the front side face of the outer shell assembly, and a rear mounting groove is formed in the rear side face of the outer shell assembly.
Further, the clamping mechanism comprises a left thrust piston assembly, a right thrust piston assembly, a left flashboard variable diameter slip and a right flashboard variable diameter slip;
the left thrust piston assembly comprises a left thrust outer cylinder and a left thrust piston, the left thrust piston slides in the left thrust outer cylinder, the left thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the left thrust piston is inserted into a left mounting hole of the outer shell assembly;
the rear end of the left flashboard variable diameter slip is fixedly connected with the front end of the left thrust piston, and the front end surface of the left flashboard variable diameter slip is provided with anti-slip teeth;
the right thrust piston assembly comprises a right thrust outer cylinder and a right thrust piston, the right thrust piston slides in the right thrust outer cylinder, the right thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the right thrust piston is inserted into a right mounting hole of the outer shell assembly;
the rear end of the right flashboard variable diameter slip is fixedly connected with the front end of the right thrust piston, and anti-slip teeth are arranged on the front end face of the right flashboard variable diameter slip.
Although all of the above embodiments use fig. 1-6, it will be apparent to those skilled in the art that separate drawings are not provided to illustrate the embodiments, so long as the missing components or structural features are removed from the drawings. As will be clear to a person skilled in the art. Of course, the more components of the embodiment are just the best mode, the fewer components of the embodiment are basic embodiments, but the basic object of the utility model can be achieved, so all of them are within the scope of the utility model.
In this application, all parts which are not discussed are known in the art, and the connection manner of all parts in this application is not described in detail. Such as welding, threaded connections, etc.
In the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. The low-profile anti-jacking anti-twisting pressurizing clamping device is characterized by comprising an outer shell assembly, a clamping mechanism and a lifting mechanism;
the clamping mechanism is transversely arranged on the outer shell assembly, and the clamping center line of the clamping mechanism is consistent with the center line of the outer shell assembly;
the lifting mechanism is vertically arranged on the outer shell assembly, namely the upper end of the lifting mechanism is connected with the outer shell assembly, and the lower end of the lifting mechanism is connected with the blowout preventer of the wellhead;
the lifting mechanism comprises a front lifting mechanism and a rear lifting mechanism, wherein the front lifting mechanism is clamped into a front mounting groove of the outer shell assembly and is fixedly connected with a front short unthreaded hole formed in the front edge of the outer shell assembly through a bolt, and the rear lifting mechanism is clamped into a rear mounting groove of the outer shell assembly and is fixedly connected with a rear short unthreaded hole formed in the rear edge of the outer shell assembly through a bolt; the front lifting mechanism and the rear lifting mechanism are identical in structure and are symmetrically arranged;
the center of the outer shell assembly is provided with an axial center channel, the left side surface of the outer shell assembly is provided with a left transversely-through mounting hole, the middle part of the left mounting hole is provided with an expanding cavity serving as a left piston cavity, the right side surface of the outer shell assembly is provided with a right transversely-through mounting hole, the middle part of the right mounting hole is provided with an expanding cavity serving as a right piston cavity, the front side surface of the outer shell assembly is provided with a front mounting groove, and the rear side surface of the outer shell assembly is provided with a rear mounting groove;
the clamping mechanism comprises a left thrust piston assembly, a right thrust piston assembly, a left flashboard variable diameter slip and a right flashboard variable diameter slip;
the left thrust piston assembly comprises a left thrust outer cylinder and a left thrust piston, the left thrust piston slides in the left thrust outer cylinder, the left thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the left thrust piston is inserted into a left mounting hole of the outer shell assembly;
the rear end of the left flashboard variable diameter slip is fixedly connected with the front end of the left thrust piston, and the front end surface of the left flashboard variable diameter slip is provided with anti-slip teeth;
the right thrust piston assembly comprises a right thrust outer cylinder and a right thrust piston, the right thrust piston slides in the right thrust outer cylinder, the right thrust outer cylinder is fixedly connected with the outer shell assembly through a bolt, and the right thrust piston is inserted into a right mounting hole of the outer shell assembly;
the rear end of the right flashboard variable diameter slip is fixedly connected with the front end of the right thrust piston, and the front end surface of the right flashboard variable diameter slip is provided with anti-slip teeth;
the left thrust piston assembly and the right thrust piston assembly are identical in structure and are symmetrically arranged, and are used for driving the left flashboard variable diameter slips and the right flashboard variable diameter slips; the left flashboard variable diameter slip and the right flashboard variable diameter slip are identical in structure and are symmetrically arranged, and are used for clamping a tubular column passing through an axial central channel of the outer shell assembly;
the front lifting mechanism or the rear lifting mechanism is a lifting pressure cylinder assembly, and the lifting pressure cylinder assembly comprises a lifting pressure cylinder sleeve and a threaded piston rod body;
the lifting pressurizing cylinder sleeve is fixedly connected with a front short unthreaded hole formed in the front edge of the outer shell assembly through a bolt, a vertical piston cavity is formed in the lifting pressurizing cylinder sleeve, and a hydraulic oil inlet and outlet hole communicated with the vertical piston cavity is formed in the lifting pressurizing cylinder sleeve;
the upper end of the threaded piston rod body is provided with a piston head which extends into a vertical piston cavity of the lifting pressurizing cylinder sleeve, and the lower end of the threaded piston rod body is provided with a threaded end for connecting with a blowout preventer of a wellhead.
2. The low-profile anti-jacking anti-torsion pressurizing clamping device according to claim 1, wherein a sealing ring is arranged on the inner wall of the left mounting hole and used for sealing the left port and the right port of the left piston cavity from leakage, and the outer shell assembly is provided with a left hydraulic oil hole communicated with the left piston cavity; and a sealing ring is arranged on the inner wall of the right mounting hole and used for sealing the left port and the right port of the right piston cavity without leakage, and the outer shell assembly is provided with a right hydraulic oil hole communicated with the right piston cavity.
3. The low-profile anti-jacking anti-torsion pressurizing clamping device according to claim 2, wherein the upper end face of the outer shell assembly is provided with lifting lugs, and long unthreaded holes are further formed in the edge of the outer shell assembly and are connected with a blowout preventer of a wellhead through bolts.
4. The low profile anti-crown anti-twist compression clamping device of claim 1, wherein the lift cylinder assembly further comprises a sealing back cap connector connected to the lower port of the vertical piston chamber and sealing, and a sealing ring is mounted on the inner wall of the sealing back cap connector for sealing the outer wall of the threaded piston rod body.
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| CN202010900921.9A CN114109291B (en) | 2020-08-31 | 2020-08-31 | Low-profile anti-top anti-torsion pressurizing clamping device and method |
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| CN114109291B true CN114109291B (en) | 2024-03-01 |
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| CN117404040B (en) * | 2023-12-13 | 2024-03-08 | 中国石油集团川庆钻探工程有限公司 | Fracturing wellhead leakage plugging device and plugging method |
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| CN114109291A (en) | 2022-03-01 |
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