CN108104761A - For the application method of the circular cutout device of four ram preventer of coiled tubing - Google Patents
For the application method of the circular cutout device of four ram preventer of coiled tubing Download PDFInfo
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- CN108104761A CN108104761A CN201810044842.5A CN201810044842A CN108104761A CN 108104761 A CN108104761 A CN 108104761A CN 201810044842 A CN201810044842 A CN 201810044842A CN 108104761 A CN108104761 A CN 108104761A
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- Prior art keywords
- ratchet
- coiled tubing
- cutter
- oil
- pushing body
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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
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
- E21B33/061—Ram-type blow-out preventers, e.g. with pivoting rams
- E21B33/062—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams
- E21B33/063—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams for shearing drill pipes
Abstract
The present invention relates to a kind of application methods of the circular cutout device for four ram preventer of coiled tubing.Its technical solution is：Including hydraulic power unit, ratchet thrust stick and ratchet cutter equipment, the hydraulic power unit is flexibly connected ratchet thrust stick, hydraulic power unit hits ratchet cutter equipment by ratchet thrust stick and rotates to form circular motion, the acceleration hit simultaneously drives pushing body under dextrorotation to move down, pushing body moves up in derotation, and then cutter is made to be squeezed in the horizontal direction to coiled tubing and is cut, the final annular cutting for realizing coiled tubing, and form circular cutting section；Advantageous effect is：By being transformed in the shear ram of four ram preventer of coiled tubing, it solves in the space of this narrow and small shear ram, the shearing section for realizing coiled tubing forms circular structure, avoid the situation of existing notch deformation, so, when being more advantageous to operation, the resistance of Produced Liquid or gas is reduced, improves oil recovery efficiency or gas production efficiency.
Description
Technical field
It is more particularly to a kind of to be used for four ram preventer of coiled tubing the present invention relates to a kind of circular cutout device and method
Circular cutout device application method.
Background technology
With the continuous development of coiled tubing technology, coiled tubing oil recovery or coal bed gas development and application have been promoted,
Existing coiled tubing has flexibility well, and a roll of coiled tubing grows several kms, and conventional oil pipe can be replaced much to be made
Industry, continuous oil pipe operation equipment have the characteristics that Operating Pressure, continuously remove, and equipment volume is small, and duty cycle is fast, at low cost
Advantage, the exploitation particularly suitable for flowing well.Wherein, four ram preventer of coiled tubing has act foot in continuous oil pipe operation
The status of weight belongs to dedicated wellhead blowout preventor, and referring to the drawings 5, existing four ram preventer of coiled tubing includes full envelope
Flashboard a, shear ram b, slip flashboard c and half envelope flashboard tetra- flashboards of d, wherein, after the completion of half envelope flashboard refers to operation, shearing
It is preceding, it is necessary to first by the annular space closing between casing and coiled tubing blowout to be avoided to hurt sb.'s feelings, full envelope also no action at this time, four flashboards
Only there are one dynamic sealing, blowout easily occurs for top；Slip flashboard be need to shear after the completion of operation when, be first fixed
Suspension, at this moment steps up coiled tubing by slips and is hung；Shear ram is to need to stay coiled tubing after operation
In well, it is necessary to which coiled tubing is cut by shear ram when carrying out oil-gas mining, but existing shear ram is usually
Using the cutting that coiled tubing is realized to scissors e and hydraulic structure；Blind rams refers to operation after finishing or stops needing during well
It to seal entirely, both sides, which are suppressed, shuts oil well, avoids gas leakage leakage, when needing subjob again or production, opens blind rams
Continue operation.
Chinese patent literature 206290235U, patent name are《Four ram preventer of coiled tubing》, disclose its shell
Blind rams, shear ram, suspension flashboard and half envelope flashboard, the housing both sides pair are sequentially installed in intracoelomic cavity from top to bottom
Title is equipped with four groups of fluid cylinders, and piston is respectively arranged in fluid cylinder；The piston inner end passes through hanging platform and corresponding full envelope respectively
Flashboard, shear ram, suspension flashboard and half envelope flashboard back end activity connection, outer end is connected with handwheel mandrel；The fluid cylinder it is interior
End is fixed with guide rod, and corresponding blind rams, shear ram, suspension flashboard and half envelope lock are inserted into the inner end of guide rod
In square groove below plate.The present invention indicates problem present in shear ram, that is, the notch for the coiled tubing sheared
It for flat, by improvement of cutter, is designed using diamond shape, so that shearing shape is approximate circle.Although foregoing invention improves
Cutter, but still still the liquid outlet quantity of coiled tubing is had an impact, partial offset without thoroughly solving the problems, such as notch
The big and stable advantage of the liquid outlet quantity of coiled tubing.
The content of the invention
The purpose of the present invention provides a kind of for four flashboard of coiled tubing aiming at drawbacks described above existing in the prior art
The application method of the circular cutout device of preventer by being equipped with ratchet thrust stick and ratchet cutter equipment, makes coiled tubing
Notch is circle, thoroughly solves the problems, such as that notch is non-round.
The application method of the circular cutout device for four ram preventer of a kind of coiled tubing that the present invention mentions, including following
Step：
By hydraulic oil oil-feed port（11）It is connected with the power cavity of hydraulic system, pressure release oil oil return opening（10）With the oil return of hydraulic system
Chamber connects, and hydraulic oil passes through hydraulic oil oil-feed port（11）Into cylinder body（2）It is interior, drive working piston（3）It moves inward, presses simultaneously
Contract reciprocal return spring（14）, when hydraulic oil passes through pressure release oil oil return opening（10）During draining, the elastic potential energy rebound of spring accumulation,
Drive working piston（3）It moves out, forms working piston（3）Reciprocating motion, working piston（3）Promote transition connector
（5）It moves back and forth, transition connector（5）Ratchet thrust stick is installed（9）, drive ratchet thrust stick（9）It moves back and forth；
Due to feeding big nut（16）The top half of inner wall be equipped with right-handed thread, the latter half is equipped with left hand thread, and right
Rotation is threadedly coupled and just screws off pushing body（17）, left hand thread connection derotation on pushing body（18）；Cutter stent（19）It is sleeved on continuous
Oil-pipe external wall, and cutter stent（19）The upper multigroup cutter of installation（8）, the cutter stent（19）Upper tool post be inserted in just to screw off and push away
Into body（17）Fixing groove in, cutter stent（19）Lower slide be inserted in pushing body in derotation（18）Fixing groove in；
In ratchet thrust stick（9）It moves back and forth under driving, ratchet（7）It moves in a circle, due to feeding big nut（16）It is installed in
The inner cavity of ratchet makes feeding big nut（16）It is formed simultaneously circular motion；Due to ratchet thrust stick（9）Hook tooth is formed once
Secondary percussion movement, while each acceleration is generated, acceleration drives pushing body under dextrorotation（17）It moves down, in derotation
Pushing body（18）It moves up, and then drives cutter（8）Radial inward movement squeezes coiled tubing, meanwhile, feed big nut
（16）The circular motion of formation drives cutter stent（19）On multigroup cutter（8）It is rotated around coiled tubing, is formed and squeeze and cut
Action is cut, completes the cutting of coiled tubing, forms circular cutting section.
Preferably, above-mentioned cutter stent（19）The upper locating slot of upper tool post and the lower locating slot of lower slide be respectively equipped with
Retaining spring（20）, by upper locating slot and lower locating slot to cutter（8）Righting is carried out, passes through retaining spring（20）It realizes reversed
Pressure auxiliary righting；
Preferably, cutter（8）Global shape for spindle-type α-Fe2O3, and intermediate protrusion cutoff wheel, 65Mn cutting sheets or 77
Number eutectoid steel cutting sheet；
Preferably, ratchet（7）By two-part ratchet shoe into cylindrical shape, big nut is fed（16）Mounted on two ratchets watt
Inside, and feed big nut（16）Pass through connecting pin with ratchet watt（15）Connection.
The beneficial effects of the invention are as follows：The reciprocating motion for the working piston that the present invention is formed using hydraulic power unit, then
By ratchet thrust stick to the percussion movement of ratchet, the circular motion of the ratchet in ratchet cutter equipment is formed, and is formed just
It screws off moving down for pushing body to move up with pushing body in derotation, and then cutter is driven to do radial inward movement, so as to
Make cutter that can both move in a circle in the outer wall of coiled tubing, meanwhile, and it is inwardly mobile dynamic there are one squeezing to coiled tubing
Make, so as to which coiled tubing is cut into circular cross-section, ratchet thrust stick cleverly make use of to realize the acceleration effect of ratchet
Above-mentioned two movement so as to smoothly cut coiled tubing, makes its notch for standard circular, improves logical liquid or ventilation
Efficiency；
The present invention is solved by being transformed in the shear ram of four ram preventer of coiled tubing in this narrow and small shearing
In the space of flashboard, the shearing section for realizing coiled tubing forms circular structure, avoid coiled tubing to scissors and
The situation that notch caused by diamond shape scissors deforms in this way, when being more advantageous to oil producing operation, reduces the resistance of Produced Liquid or gas, carries
High oil recovery efficiency or gas production efficiency.
Description of the drawings
Attached drawing 1 is the structure diagram that the present invention is applied in four ram preventers；
Attached drawing 2 is the side sectional view of ratchet thrust stick and ratchet cutter equipment of the present invention；
Attached drawing 3 is the cross section view of hydraulic power unit, ratchet thrust stick and ratchet cutter equipment；
Attached drawing 4 is the bottom view of the upper tool post of cutter stent；
Attached drawing 5 is the structure diagram of existing four ram preventer；
In upper figure：Hydraulic cylinder 1, cylinder body 2, working piston 3, connection bolt 4, transition connector 5, four ram blowout preventer bodies 6,
Ratchet 7, standard cutter group 8, ratchet thrust stick 9, pressure release oil oil return opening 10, hydraulic oil oil-feed port 11, sealant rubber ring 12, continuous oil
Pipe 13, reciprocal return spring 14, feeding female thread big nut 16, are just screwing off pushing body 17, pushing body in derotation at connecting pin 15
18th, cutter stent 19, retaining spring 20；The set main body 19.1 of circular ring shape, supporting rod 19.2, upper locating slot 19.3；
Blind rams a, shear ram b, slip flashboard c, half seal flashboard d, to scissors e, ratchet cutter equipment b1, manual teardown
Leading screw b2, safe thread protector b3.
Specific embodiment
The preferred embodiment of the present invention is illustrated below in conjunction with attached drawing, it should be understood that preferred reality described herein
It applies example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Referring to the drawings 1,2 and 3, a kind of circular cutout for four ram preventer of coiled tubing that the present invention mentions fills
It puts, technical solution is：Including hydraulic power unit, ratchet thrust stick（9）With ratchet cutter equipment b1, the hydraulic power is set
It is standby to include hydraulic cylinder（1）, cylinder body（2）, working piston（3）, connection bolt（4）, transition connector（5）, pressure release oil oil return opening
（10）, hydraulic oil oil-feed port（11）, wherein, cylinder body（2）Inner cavity is equipped with working piston（3）With reciprocal return spring（14）, work
Piston（3）Inner end connection transition connector（5）, transition connector（5）Upper flexible connection ratchet thrust stick（9）, the cylinder body
（2）Outer wall one side be equipped with hydraulic oil oil-feed port（11）, opposite side is equipped with pressure release oil oil return opening（10）；
The ratchet cutter equipment includes ratchet（7）, cutter（8）, feeding big nut（16）, just screw off pushing body（17）, derotation
Upper pushing body（18）, cutter stent（19）And retaining spring（20）, ratchet（7）Outer wall be installed on a circle hook tooth, in ratchet
（7）Inner wall flexible connection feeding big nut（16）, feed big nut（16）Inner wall be equipped with right-handed thread and left hand thread, it is right
Rotation screw thread is with just screwing off pushing body（17）Connection, left hand thread and pushing body in derotation（18）Connection, in cutter stent（19）On
Multigroup cutter is installed（8）, pass through cutter stent（19）With just screwing off pushing body（17）With pushing body in derotation（18）Connection, ratchet
（7）Rotation realize cutter stent（19）Circular motion, by just screwing off pushing body（17）With pushing body in derotation（18）'s
Move up and down realization cutter（8）Radially-inwardly extruding movement；
Hydraulic power unit passes through ratchet thrust stick（9）Ratchet cutter equipment is hit to rotate to form circular motion, while hit
Acceleration drives pushing body under dextrorotation（17）It moves down, pushing body in derotation（18）It moves up, and then makes cutter（8）Along water
It square cuts to being squeezed to coiled tubing, the final annular cutting for realizing coiled tubing, and forms circular cutting section.
Wherein, ratchet of the invention（7）With feeding big nut（16）Pass through connecting pin（15）Connection, make ratchet drive into
To big nut（16）It moves in a circle.Feed big nut（16）The top half of inner wall is equipped with right-handed thread, and the latter half is equipped with
Left hand thread, and right-handed thread connection just screws off pushing body（17）, left hand thread connection derotation on pushing body（18）.
Referring to the drawings 3, working piston of the invention（3）Outer end be equipped with outer lug boss, inner end and transition connector（5）Even
It connects, in cylinder body（2）Inner wall be equipped with inner convex platform, reciprocal return spring is installed between outer lug boss and inner convex platform（14）, and by outer
End is equipped with hydraulic cylinder（1）By working piston（3）Sealing；In this way, pass through hydraulic oil oil-feed port（11）Into the hydraulic oil of cylinder body
Drive working piston（3）It is inwardly quick mobile, while compress reciprocal return spring（14）, make reciprocal return spring（14）Put aside bullet
Property potential energy, when pressure release oil oil return opening（10）When hydraulic pressure is released, reciprocal return spring（14）Elastic potential energy drive working piston
（3）It is displaced outwardly, with passing through hydraulic oil oil-feed port（11）The hydraulic oil of cylinder body is continued into again by working piston（3）Inwardly
It is mobile, form the reciprocating percus-sion movement of working piston.
In addition, the ratchet thrust stick that the present invention mentions（9）One end for ellipsoidal structure, and and transition connector（5）It is living
Dynamic connection；The other end is rectangular cross-sectional, with ratchet（7）The surface engagement contact of the hook tooth of outer wall, passes through ratchet thrust stick
（9）To the percussion movement of hook tooth, make ratchet（7）Realize the rotation of circumferencial direction；Ratchet simultaneously（7）The feeding big nut of connection
（16）Under the action of impact acceleration, drive just screws off pushing body（17）It moves down along right-hand screw screw thread, is pushed away in derotation
Into body（18）It is moved up along left-hand screw screw thread, and then squeezes and drive cutter（8）Radial inward movement squeezes the continuous oil of cutting
Pipe.
Referring to the drawings 4, cutter stent of the invention（19）It is made of upper tool post and lower slide two parts, under upper tool post
Side is equipped with upper locating slot, and the upside of lower slide is equipped with lower locating slot, and is installed on positioning bullet in upper locating slot and lower locating slot
Spring（20）, there are four cutteves for installation between upper tool post and lower slide（8）.
In addition, the cutter of the present invention（8）Shape for spindle-type α-Fe2O3, and be equipped at middle part the blade of a circle protrusion, two
End is as shaft and cutter stent（19）It is connected；Cutter（8）Using cutoff wheel, 65Mn cutting sheets or No. 77 eutectoid steel
Cutting sheet is made.
The application method of the circular cutout device for four ram preventer of a kind of coiled tubing that the present invention mentions, including following
Step：
By hydraulic oil oil-feed port（11）It is connected with the power cavity of hydraulic system, pressure release oil oil return opening（10）With the oil return of hydraulic system
Chamber connects, and hydraulic oil passes through hydraulic oil oil-feed port（11）Into cylinder body（2）It is interior, drive working piston（3）It moves inward, presses simultaneously
Contract reciprocal return spring（14）, when hydraulic oil passes through pressure release oil oil return opening（10）During draining, the elastic potential energy rebound of spring accumulation,
Drive working piston（3）It moves out, forms working piston（3）Reciprocating motion, working piston（3）Promote transition connector
（5）It moves back and forth, transition connector（5）Ratchet thrust stick is installed（9）, drive ratchet thrust stick（9）It moves back and forth；
Due to feeding big nut（16）The top half of inner wall be equipped with right-handed thread, the latter half is equipped with left hand thread, and right
Rotation is threadedly coupled and just screws off pushing body（17）, left hand thread connection derotation on pushing body（18）；Cutter stent（19）It is sleeved on continuous
Oil-pipe external wall, and cutter stent（19）The upper multigroup cutter of installation（8）, the cutter stent（19）Upper tool post be inserted in just to screw off and push away
Into body（17）Fixing groove in, cutter stent（19）Lower slide be inserted in pushing body in derotation（18）Fixing groove in；
In ratchet thrust stick（9）It moves back and forth under driving, ratchet（7）It moves in a circle, due to feeding big nut（16）It is installed in
The inner cavity of ratchet makes feeding big nut（16）It is formed simultaneously circular motion；Due to ratchet thrust stick（9）Hook tooth is formed once
Secondary percussion movement, while each acceleration is generated, acceleration drives pushing body under dextrorotation（17）It moves down, in derotation
Pushing body（18）It moves up, and then drives cutter（8）Radial inward movement squeezes coiled tubing, meanwhile, feed big nut
（16）The circular motion of formation drives cutter stent（19）On multigroup cutter（8）It is rotated around coiled tubing, is formed and squeeze and cut
Action is cut, completes the cutting of coiled tubing, forms circular cutting section.
Preferably, above-mentioned cutter stent（19）Including upper tool post and lower slide, wherein, upper tool post by circular ring shape set master
Body 19.1 and four supporting rods 19.2 form, and are equipped with upper locating slot 19.3 in the downside surface of supporting rod 19.2, lower slide is also
Identical structure；Retaining spring is respectively equipped in the upper locating slot of upper tool post and the lower locating slot of lower slide（20）, by upper fixed
Position slot and lower locating slot are to cutter（8）Righting is carried out, passes through retaining spring（20）Realize reversed pressure auxiliary righting；
Cutter（8）Global shape for spindle-type α-Fe2O3, and intermediate protrusion cutoff wheel, 65Mn cutting sheets or No. 77 eutectoid steel
Cutting sheet；
Ratchet（7）By two-part ratchet shoe into cylindrical shape, big nut is fed（16）On the inside of two ratchets watt, and
Feed big nut（16）Pass through connecting pin with ratchet watt（15）Connection.
The installation method of the circular cutout device for four ram preventer of coiled tubing that the present invention mentions, including following step
Suddenly：
Ratchet cutter equipment b1 is assembled first：The first step, in cutter stent（19）Upper tool post lower locating slot in installation positioning
Spring（20）, retaining spring is installed in the upper locating slot of lower slide（20）；The pushing body in derotation（18）Inside taper knot
The surface of structure is equipped with groove, by cutter stent（19）Lower slide be inserted in groove fixed, and four groups of cutteves installations are cut
In the upper locating slot of frame；Second step, in feeding big nut（16）Pushing body in derotation is installed by left hand thread on the downside of inner wall
（18）With lower slide and multigroup cutter；3rd step will just screw off pushing body（17）It is combined with upper tool post, it then, will just
Screw off pushing body（17）Feeding big nut is connected to by right-handed thread with upper tool post（16）The upper part of inner wall, while by upper slitter
The lower locating slot of frame contacts positioning with the top of cutter；Two semicylindrical ratchets watt are combined and are sleeved on by the 4th step
Feed big nut（16）Outer wall, and pass through connecting pin 15 with feeding big nut（16）It is fixed, form ratchet cutter equipment b1；
Secondly, the safe thread protector b3 on the outside of shear ram b will be opened, removes hydraulic cylinder 1, then manually dismantle leading screw again
B2 is by working piston（3）It pulls out, and removes cylinder body 2, then, ratchet cutter equipment b1 is mounted on to the center cavity of shear ram b
Position, by two ratchet thrust sticks（9）Respectively with ratchet tooth contact, then by cylinder body 2, working piston（3）And hydraulic cylinder 1 is installed
On, complete the assembling of shear ram b；
Finally, coiled tubing is sequentially passed through into blind rams a, shear ram b, card by the top tripping in of four ram preventers
Under block brake plate c and half envelope flashboard d lower going-into-wells, wherein, it is described just to screw off pushing body（17）Top be equipped with taper guide surface, just
In the righting and tripping in of coiled tubing, reduce to cutter stent（19）Collision；In addition, manual teardown leading screw b2 is installation is complete
After disassemble, reduce the resistance of motion of working piston, then safe thread protector is installed in outside.
The above, is only the part preferred embodiment of the present invention, and any those skilled in the art may profit
Equivalent technical solution is changed or is revised as with the technical solution of above-mentioned elaboration.Therefore, technology according to the invention
Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.
Claims (4)
1. a kind of application method of the circular cutout device of four ram preventer of coiled tubing, it is characterized in that comprising the following steps：
By hydraulic oil oil-feed port（11）It is connected with the power cavity of hydraulic system, pressure release oil oil return opening（10）With the oil return of hydraulic system
Chamber connects, and hydraulic oil passes through hydraulic oil oil-feed port（11）Into cylinder body（2）It is interior, drive working piston（3）It moves inward, presses simultaneously
Contract reciprocal return spring（14）, when hydraulic oil passes through pressure release oil oil return opening（10）During draining, the elastic potential energy rebound of spring accumulation,
Drive working piston（3）It moves out, forms working piston（3）Reciprocating motion, working piston（3）Promote transition connector
（5）It moves back and forth, transition connector（5）Ratchet thrust stick is installed（9）, drive ratchet thrust stick（9）It moves back and forth；
Due to feeding big nut（16）The top half of inner wall be equipped with right-handed thread, the latter half is equipped with left hand thread, and right
Rotation is threadedly coupled and just screws off pushing body（17）, left hand thread connection derotation on pushing body（18）；Cutter stent（19）It is sleeved on continuous
Oil-pipe external wall, and cutter stent（19）The upper multigroup cutter of installation（8）, the cutter stent（19）Upper tool post be inserted in just to screw off and push away
Into body（17）Fixing groove in, cutter stent（19）Lower slide be inserted in pushing body in derotation（18）Fixing groove in；
In ratchet thrust stick（9）It moves back and forth under driving, ratchet（7）It moves in a circle, due to feeding big nut（16）It is installed in
The inner cavity of ratchet makes feeding big nut（16）It is formed simultaneously circular motion；Due to ratchet thrust stick（9）Hook tooth is formed once
Secondary percussion movement, while each acceleration is generated, acceleration drives pushing body under dextrorotation（17）It moves down, in derotation
Pushing body（18）It moves up, and then drives cutter（8）Radial inward movement squeezes coiled tubing, meanwhile, feed big nut
（16）The circular motion of formation drives cutter stent（19）On multigroup cutter（8）It is rotated around coiled tubing, is formed and squeeze and cut
Action is cut, completes the cutting of coiled tubing, forms circular cutting section.
2. the application method of the circular cutout device of four ram preventer of coiled tubing according to claim 1, feature
It is：The cutter stent（19）The upper locating slot of upper tool post and the lower locating slot of lower slide be respectively equipped with retaining spring
（20）, by upper locating slot and lower locating slot to cutter（8）Righting is carried out, passes through retaining spring（20）Realize that reversed pressure is auxiliary
Help righting.
3. the application method of the circular cutout device of four ram preventer of coiled tubing according to claim 1, feature
It is：The cutter（8）Global shape for spindle-type α-Fe2O3, and intermediate protrusion cutoff wheel, 65Mn cutting sheets or No. 77
Eutectoid steel cutting sheet.
4. the application method of the circular cutout device of four ram preventer of coiled tubing according to claim 1, feature
It is：The ratchet（7）By two-part ratchet shoe into cylindrical shape, big nut is fed（16）In two ratchets watt
Side, and feed big nut（16）Pass through connecting pin with ratchet watt（15）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810044842.5A CN108104761B (en) | 2018-01-17 | 2018-01-17 | Using method of circular shearing device for coiled tubing four-ram blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810044842.5A CN108104761B (en) | 2018-01-17 | 2018-01-17 | Using method of circular shearing device for coiled tubing four-ram blowout preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108104761A true CN108104761A (en) | 2018-06-01 |
| CN108104761B CN108104761B (en) | 2020-06-23 |
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| CN201810044842.5A Active CN108104761B (en) | 2018-01-17 | 2018-01-17 | Using method of circular shearing device for coiled tubing four-ram blowout preventer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005699A (en) * | 2019-11-13 | 2020-04-14 | 王凯 | Vertical coiled tubing blowout preventer |
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| CN104704192A (en) * | 2012-08-16 | 2015-06-10 | 海德里尔美国制造业有限责任公司 | Replaceable wear plates for use with blind shear rams |
| CN204532192U (en) * | 2015-01-23 | 2015-08-05 | 中国石油天然气股份有限公司 | Drilling rig is decomposed in a kind of wellheadpressure cutting |
| CN206290235U (en) * | 2016-12-14 | 2017-06-30 | 宝鸡市赛孚石油机械有限公司 | The ram preventer of coiled tubing four |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111005699A (en) * | 2019-11-13 | 2020-04-14 | 王凯 | Vertical coiled tubing blowout preventer |
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