CN106639957A - Double-acting suction blowout preventer - Google Patents
Double-acting suction blowout preventer Download PDFInfo
- Publication number
- CN106639957A CN106639957A CN201611100297.4A CN201611100297A CN106639957A CN 106639957 A CN106639957 A CN 106639957A CN 201611100297 A CN201611100297 A CN 201611100297A CN 106639957 A CN106639957 A CN 106639957A
- Authority
- CN
- China
- Prior art keywords
- holding
- blowout preventer
- shear
- hydraulic cylinder
- liquid outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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 invention relates to a double-acting suction blowout preventer. The upper part of the double-acting suction blowout preventer is a shear mechanism while the lower part of the double-acting suction blowout preventer is an enclasping mechanism; and a main body cavity is formed in the center of the double-acting suction blowout preventer. The shear mechanism is provided with a pair of shear blades; the enclasping mechanism is provided with a pair of enclasping sealing damper; and symmetric shear driving devices and symmetric enclasping driving devices are arranged on two sides of the double-acting suction blowout preventer. Each shear driving device comprises a hydraulic cylinder and a piston, each enclasping driving device also comprises a hydraulic cylinder and a piston, each hydraulic cylinder is provided with an end cap, and a liquid inlet and a liquid outlet are formed in each end cap; each piston has certain travel space and is provided with a connecting rod; each piston is connected with the corresponding shear blade and the corresponding enclasping sealing damper through the corresponding connecting rod; and then the shear blades and the enclasping sealing dampers are pushed to move. The double-acting suction blowout preventer has double blowout prevention security, a suction rope can be prevented from dropping in a well, remote hydraulic operation is facilitated, and the safety is good.
Description
Technical field
The present invention is the device with regard to preventing blowout out of control in a kind of petroleum works pumping discharge opeing process, more particularly to a kind of
Double acting pumping blowout preventer.
Background technology
In oil well common testing technique, due to pumping discharge opeing or the technical maturity of swab the well in, advantage of lower cost, into
For a kind of wide variety of discharge opeing technology.The technique of pumping discharge opeing or swab the well in is that the front end of pumping steel wire rope is connected into one
Swab, in being lowered into well, then quickly above carries swab, extracts the liquid in pit shaft out ground.During pumping, when the hydrostatic in pit shaft
Column pressure be less than formation pressure, oil gas just from oil reservoir output, into pit shaft；When formation pressure is more than oil gas column pressure in pit shaft
When, oil gas will flow out ground, and overflow occurs.The measure typically taken is：It was found that after overflow, it is quick to act swab, seen
Examine.Sometimes overflow is serious, blowout just occurs when swab line has had little time well head, so as to cause the accident.At this moment, it is larger in well
Pressure promote swab rapid increase, swab line winch upward strain speed be less than the swab rate of climb, be deposited in will swab line
Well head, winch cannot wind again swab line.Because a part of swab line cannot rise out in well so that shaft collar cannot be closed
Close, cause blowout out of control.At present, the blowout for rising situation to prevent pumping from causing mainly by observation well head overflow and liquid level.
Thus, the present inventor proposes a kind of double acting pumping blowout-preventing by the experience and practice of being engaged in relevant industries for many years
Device, to overcome the defect of prior art.
The content of the invention
It is an object of the invention to provide a kind of double acting pumping blowout preventer, with dual blowout prevention guarantee, and can prevent from taking out
Draw rope to fall in well.
Another object of the present invention is to provide a kind of double acting pumping blowout preventer, Remote Hydraulic operation is conveniently carried out, pacified
Good perfection.
The object of the present invention is achieved like this, and a kind of double acting pumping blowout preventer, the double acting pumping blowout preventer sets
There are cutting mechanism and hold-fast body；The cutting mechanism and the hold-fast body are installed in blowout preventer body structure, described
Cutting mechanism is located at the top of the hold-fast body；The body cavity of up/down perforation, institute are provided with the blowout preventer body structure
Body cavity is stated for through swab and swab line；The cutting mechanism includes being symmetricly set on the one of the body cavity both sides
To shear ram, the shear ram connection shearing driving means, and institute can be cut off under the driving of the shearing driving means
State swab line；The hold-fast body includes being symmetricly set on a pair of of body cavity both sides holding sealing dampers, described armful
Driving means are held in the connection of tightening seal flashboard tightly, and sealing can hold the swab line tightly under the driving of the holding driving means.
In a better embodiment of the present invention, the shearing driving means include that shearing hydraulic cylinder and shear cylinder are lived
Plug；The shearing hydraulic cylinder is connected to the side of the blowout preventer body structure, and the shear cylinder piston is slidably arranged in described
In shearing hydraulic cylinder, the shear cylinder piston is provided with connecting rod, the end of the connecting rod towards the side of the body cavity
Reach the shearing hydraulic cylinder outside and be connected with the shear ram.
In a better embodiment of the present invention, the holding driving means include holding hydraulic cylinder tightly and holding cylinder tightly living
Plug；Described to hold the side that hydraulic cylinder is connected to the blowout preventer body structure tightly, the holding cylinder piston is slidably arranged in described
Hold tightly in hydraulic cylinder, the holding cylinder piston is provided with connecting rod, the end of the connecting rod towards the side of the body cavity
Reach the holding hydraulic cylinder outside and be connected with the holding sealing damper.
In a better embodiment of the present invention, the blowout preventer body structure is provided with upper flange, lower flange, shearing lock
Plate sliding channel and holding sealing damper sliding channel；The body cavity is axially extending along the blowout preventer body structure,
The both sides of the body cavity are symmetrical arranged the shear ram sliding channel of perpendicular insertion and holding sealing lock
Plate sliding channel；Shear ram described in a pair is slidably arranged in the shear ram sliding channel, holds sealing described in a pair tightly
Gate panel slide is arranged in the holding sealing damper sliding channel.
In a better embodiment of the present invention, cutting edge is respectively equipped with the opposite end of shear ram described in a pair parallel
And the interlaced shear blade of energy.
In a better embodiment of the present invention, the inside of the shearing hydraulic cylinder is divided into by the shear cylinder piston
Push chamber and return cavity；The pushing chamber connects with inlet, by cutting described in the highly pressurised liquid promotion that the inlet is entered
Cut cylinder piston to move to the body cavity with the shear ram；The return cavity is connected with liquid outlet, the return cavity
Interior liquid discharges the shearing hydraulic cylinder by the liquid outlet.
In a better embodiment of the present invention, the end of the shearing hydraulic cylinder is connected with end cap, on the end cap
It is provided with the inlet, the liquid outlet, feed pathway and apocenosis passage；Liquid is provided with out in the casing wall of the shearing hydraulic cylinder to lead to
Road, the liquid outlet channel connects the return cavity with the apocenosis passage；The inlet is by the feed pathway and institute
State the connection of pushing chamber；The liquid outlet is connected by the apocenosis passage and the liquid outlet channel with the return cavity.
In a better embodiment of the present invention, on the end cap lock valve is connected with；The lock valve is provided with can be stretched
The push rod of contracting, the push rod passes through the end cap and can be resisted against on the shear cylinder piston carries out locking.
In a better embodiment of the present invention, the inside for holding hydraulic cylinder tightly is divided into by the holding cylinder piston
Push chamber and return cavity；The pushing chamber connects with inlet, and the highly pressurised liquid entered by the inlet promotes described embracing
Tight cylinder piston is moved with the holding sealing damper to the body cavity；The return cavity is connected with liquid outlet, described to return
The liquid returned in chamber discharges the holding hydraulic cylinder by the liquid outlet.
In a better embodiment of the present invention, the end for holding hydraulic cylinder tightly is connected with end cap, on the end cap
It is provided with the inlet, the liquid outlet, feed pathway and apocenosis passage；Liquid is provided with out in the casing wall for holding hydraulic cylinder tightly to lead to
Road, the liquid outlet channel connects the return cavity with the apocenosis passage；The inlet is by the feed pathway and institute
State the connection of pushing chamber；The liquid outlet is connected by the apocenosis passage and the liquid outlet channel with the return cavity.
In a better embodiment of the present invention, on the end cap lock valve is connected with；The lock valve is provided with can be stretched
The push rod of contracting, the push rod passes through the end cap and can be resisted against on the holding cylinder piston carries out locking.
From the above mentioned, double acting pumping blowout preventer of the invention is provided with cutting mechanism in blowout preventer body structure,
Hold-fast body is installed in the lower section of cutting mechanism, and cutting mechanism is symmetrical arranged a pair of shear rams, and hold-fast body is symmetrical arranged a pair
Hold sealing damper tightly, when there is blowout, first closing and holding sealing damper tightly, prevent that the stream sprayed in well is altered and sealed on swab line
Body；When seal failure, shear ram is turned off, moment cuts off swab line, and closes shaft collar, and blowout is controlled rapidly,
At this moment, swab line is embraced by sealing is held tightly, be will not fall in well.Shear ram and holding sealing damper are driven using hydraulic cylinder
Dynamic, control, the 16MPa hydraulic power supplies that can be provided with workover rig are connected, and conveniently carry out Remote Hydraulic operation, and security is good.
Description of the drawings
The following drawings is only intended in schematic illustration and explanation is done to the present invention, is not delimit the scope of the invention.Wherein：
Fig. 1：For the cross-sectional view of double acting pumping blowout preventer of the present invention.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now control illustrates this
Bright specific embodiment.
As shown in figure 1, the invention provides a kind of double acting pumping blowout preventer 100, the double acting pumping blowout preventer 100
Including a blowout preventer body structure 10, the blowout preventer body structure 10 is a rotary body formed around an axis；This is prevented
The top and bottom of spray apparatus agent structure 10 are respectively upper flange 101 and lower flange 102, wherein upper flange 101 and production tree
Little four-way flange connection, lower flange 102 is connected with master valve flange.The center of the blowout preventer body structure 10 is provided with a master
Body cavity 103, the body cavity 103 along blowout preventer body structure 10 central axis up/down perforation, the body cavity 103
For through swab and swab line.Cutting mechanism 20 and hold-fast body 30, the shearing are installed in blowout preventer body structure 10
Mechanism 20 is located at the top of the hold-fast body 30.Hold-fast body 30 is used for sealing the swab line held tightly in body cavity 103；Cut
Mechanism 20 is cut for cutting off the swab line in body cavity 103.The cutting mechanism 20 includes being symmetricly set on the main body sky
A pair of shear rams 201 of the both sides of chamber 103, are respectively equipped with cutting edge parallel and can mutually on the opposite end of this pair of shear ram 201
Shear blade 2011 staggeredly, is cut off swab line by the interlaced of shear blade 2011 in two pieces of 201 pairings of shear ram.
The connection shearing driving means of the shear ram 201, the shearing driving means can drive shear ram 201 described in a pair relative
Move so as to cut off the swab line.The hold-fast body 30 includes being symmetricly set on a pair of the both sides of the body cavity 103
Hold sealing damper 301 tightly, driving means are held in holding sealing damper 301 connection tightly, and the holding driving means can drive one
To the holding relative movement of sealing damper 301, the opposing end surface for holding sealing damper 301 described in a pair tightly is provided with sealing structure,
The holding swab line can be sealed after opposing end surface is docking together.
In the specific implementation, as long as a pair of shear rams 201 and a pair of holding sealing dampers 301 can be from blowout preventer bodies
The both sides of structure 10 are extend in body cavity 103.To reach more preferable implementation result, in a preferred embodiment
In, shear ram sliding channel 104 is additionally provided with blowout preventer body structure 10 and sealing damper sliding channel 105 is held tightly；It is described
Shear ram sliding channel 104 and the holding sealing damper sliding channel 105 are arranged above and below successively, and empty with the main body
Chamber 103 vertically through.One of shear ram 201 is slidably arranged in the shear ram of the first side (left side in figure) and slides
In passage 104, another shear ram 201 is slidably arranged in the shear ram sliding channel on the second side (right side in figure)
In 104；Equally, it is one of to hold the holding sealing lock that sealing damper 301 is slidably arranged in the first side (left side in figure) tightly
In plate sliding channel 105, another holds the holding sealing that sealing damper 301 is slidably arranged in the second side (right side in figure) tightly
In gate panel slide passage 105.Corresponding with shear ram 201 and the position for holding sealing damper 301 tightly, shearing driving means are arranged
In the both sides of blowout preventer body structure 10, and it extend in shear ram sliding channel 104 and is connected with shear ram 201, promotes
Shear ram 201 is moved along shear ram sliding channel 104 to body cavity 103；Hold driving means tightly and be located at preventer master
The both sides of body structure 10 are simultaneously located at the lower section for shearing driving means, hold driving means tightly and extend into holding sealing damper sliding channel
It is connected with holding sealing damper 301 in 105, promotes and hold sealing damper 301 tightly along holding sealing damper sliding channel 105 to master
Body cavity 103 is moved.
Using the double acting pumping blowout preventer 100 of the present invention, once there is blowout in pumping process, swab cannot rise again
When going out well head, operating personnel carry out two kinds of operations：One is to close to hold sealing damper 301 tightly, prevents to alter and seal well on swab line
The fluid of interior ejection, then carries out playing out swab after blowout prevention or kill-job；Two is, when holding sealing damper 301 tightly and also failing, then to close
Shear ram 201 is closed, moment cuts off swab line, may then turn off shaft collar, blowout, at this moment, swab line are controlled rapidly
Also embraced by holding sealing damper 301, be will not fall in well.
Further, the shearing driving means and the holding driving means can be filled using pneumatic means, hydraulic-driven
Put or electric device etc., the present embodiment preferably adopts fluid pressure drive device.Specifically, the shearing driving means mainly include cutting
Cut hydraulic cylinder 202 and shear cylinder piston 203；The shearing hydraulic cylinder 202 is connected to the side of the blowout preventer body structure 10,
I.e. both sides shear ram sliding channel 104 each one shearing hydraulic cylinder 202 of connection in port, the structure of both sides relative to
The body cavity 103 at center is symmetrical；Sealed using sealing ring 1 between shearing hydraulic cylinder 202 and blowout preventer body structure 10.It is described
Shear cylinder piston 203 is slidably arranged in the shearing hydraulic cylinder 202, the inwall of shear cylinder piston 203 and shearing hydraulic cylinder 202
Between sealed using sealing ring 2；The shear cylinder piston 203 is integrally formed with connecting rod towards the side of the body cavity 103
204, the end of the connecting rod 204 reaches the outside of shearing hydraulic cylinder 202 and is connected with the shear ram 201.Even
Sealed using sealing ring 3 between extension bar 204 and shearing hydraulic cylinder 202.The high pressure entered in shearing hydraulic cylinder 202 by control
Liquid-driving shear cylinder piston 203 is moved towards body cavity 103, and a pair of shear rams 201 are promoted from both sides by connecting rod 204
Move to the body cavity 103 at center, a pair of shear rams 201 is closed so as to swab line be cut off.
Wherein, the inside of the shearing hydraulic cylinder 202 is divided into pushing chamber 2021 and is returned by the shear cylinder piston 203
Chamber 2022；The pushing chamber 2021 connects with inlet 2051, and the highly pressurised liquid entered by the inlet 2051 promotes institute
State shear cylinder piston 203 to move to the body cavity 103 with the shear ram 201；The return cavity 2022 with go out liquid
Mouth 2052 is connected, and the liquid in the return cavity 2022 discharges the shearing hydraulic cylinder 202 by the liquid outlet 2052.It is described
The end thread of shearing hydraulic cylinder 202 is connected with end cap 205, and between the end cap 205 and shearing hydraulic cylinder 202 sealing ring is adopted
4 sealings.The end cap 205 is provided with the inlet 2051, the liquid outlet 2052, feed pathway 2053 and apocenosis passage
2054；Liquid outlet channel 2023 is provided with the casing wall of the shearing hydraulic cylinder 202, the liquid outlet channel 2023 is by the return cavity
2022 connect with the apocenosis passage 2054；The inlet 2051 is by the feed pathway 2053 and the pushing chamber 2021
Connection；The liquid outlet 2052 is connected by the apocenosis passage 2054 and the liquid outlet channel 2023 with the return cavity 2022
It is logical.The 16MPa hydraulic power supplies that inlet 2051 is provided with workover rig are connected, and pressure are provided to chamber 2021 is pushed, by shear cylinder
Piston 203 to body cavity 103 is promoted, and the liquid in return cavity 2022 flows into liquid outlet channel 2023 and apocenosis passage 2054, Jing
Liquid outlet 2052 is discharged.Lock valve 206 is also associated with the end cap 205, lock valve 206 is prior art, and its structure is in figure
Not shown in, lock valve 206 is threaded on end cap 205, has a push rod 2061 that can be stretched in lock valve 206,
The push rod 2061 is extend in pushing chamber 2021 through end cap 205, and its effect is when shear cylinder piston 203 moves into place (i.e. two
Individual shear ram 201 is closed) after, the positional stability of shear cylinder piston 203 is affected to prevent hydraulic leak, the push rod 2061
Can be resisted against on shear cylinder piston 203 and lock the position of shear cylinder piston 203, prevent shear cylinder piston 203 from drawing back.
Further, the structure for holding driving means tightly is essentially identical with the structure of shearing driving means, except for the difference that exists
The end connection of connecting rod is to hold sealing damper 301 tightly.Its concrete structure is that the holding driving means include holding hydraulic pressure tightly
Cylinder 302 and holding cylinder piston 303；It is described to hold the side that hydraulic cylinder 302 is connected to the blowout preventer body structure 10 tightly, i.e., two
Respectively hydraulic cylinder 302 is held in connection one tightly for the port for holding sealing damper sliding channel 105 tightly of side；The structure of both sides is relative in
The body cavity 103 of the heart is symmetrical；Hold tightly and sealed using sealing ring 5 between hydraulic cylinder 302 and blowout preventer body structure 10.Described armful
Tight cylinder piston 303 is slidably arranged in the holding hydraulic cylinder 302, hold tightly cylinder piston 303 with hold tightly hydraulic cylinder 302 inwall it
Between sealed using sealing ring 6；The holding cylinder piston 303 is integrally formed with connecting rod towards the side of the body cavity 103
304, the end of the connecting rod 304 reaches the outside of holding hydraulic cylinder 302 and connects with the holding sealing damper 301
Connect.Sealed using sealing ring 7 between connecting rod 304 and holding hydraulic cylinder 302.Entered in holding hydraulic cylinder 302 by control
Highly pressurised liquid promote and hold cylinder piston 303 tightly and move towards body cavity 103, a pair of holdings sealing locks are promoted by connecting rod 304
Plate 301 is moved from the body cavity 103 at two lateral centers, a pair of holding sealing dampers 301 is closed so as to swab line be sealed
Hold tightly.
Wherein, the inside for holding hydraulic cylinder 302 tightly is divided into pushing chamber 3021 and is returned by the holding cylinder piston 303
Chamber 3022；The pushing chamber 3021 connects with inlet 3051, and the highly pressurised liquid entered by the inlet 3051 promotes institute
State holding cylinder piston 303 to move to the body cavity 103 with the holding sealing damper 301；The return cavity 3022 with
Liquid outlet 3052 is connected, and the liquid in the return cavity 3022 discharges the holding hydraulic cylinder 302 by the liquid outlet 3052.
The end thread for holding hydraulic cylinder 302 tightly is connected with end cap 305, and the end cap 305 is provided with the inlet 3051, described
Liquid outlet 3052, feed pathway 3053 and apocenosis passage 3054；Liquid outlet channel is provided with the casing wall for holding hydraulic cylinder 302 tightly
3023, the liquid outlet channel 3023 connects the return cavity 3022 with the apocenosis passage 3054；The inlet 3051 leads to
Cross the feed pathway 3053 to connect with the pushing chamber 3021；The liquid outlet 3052 is by the apocenosis passage 3054 and institute
State liquid outlet channel 3023 to connect with the return cavity 3022.Inlet 3051 connects with the 16MPa hydraulic power supplies that workover rig is provided
Connect, to chamber 3021 is pushed pressure is provided, cylinder piston 303 will be held tightly and promoted to body cavity 103, the liquid flow in return cavity 3022
Enter liquid outlet channel 3023 and apocenosis passage 3054, Jing liquid outlets 3052 are discharged.Lock valve is equally connected with the end cap 305
206, lock valve 206 is threaded on end cap 305, has a push rod 2061 that can be stretched, the push rod in lock valve 206
2061 extend in pushing chamber 3021 through end cap 305, and its effect is when holding cylinder piston 303 moves into place (i.e. two holdings
Sealing damper 301 is closed) after, affecting to hold the positional stability of cylinder piston 303 tightly to prevent hydraulic leak, the push rod 2061 can
To be resisted against the position locking held tightly on cylinder piston 303 and cylinder piston 303 will be held tightly, prevent holding cylinder piston 303 from drawing back.
The present invention shear ram 201 and hold tightly sealing damper 301 driven using hydraulic cylinder, controlled, can with repair
The 16MPa hydraulic power supplies connection that well machine is provided, easily implements, and conveniently carries out Remote Hydraulic operation, and security is good.
Schematically specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any
Those skilled in the art, done equivalent variations and modification on the premise of the design without departing from the present invention and principle,
The scope of protection of the invention should be belonged to.
Claims (11)
1. a kind of double acting pumping blowout preventer, it is characterised in that the double acting pumping blowout preventer is provided with cutting mechanism and holding
Mechanism；The cutting mechanism and the hold-fast body are installed in blowout preventer body structure, and the cutting mechanism is located at described
The top of hold-fast body；The body cavity of up/down perforation is provided with the blowout preventer body structure, the body cavity is used to wear
Cross swab and swab line；The cutting mechanism includes being symmetricly set on a pair of shear rams of the body cavity both sides, described
Shear ram connection shearing driving means, and the swab line can be cut off under the driving of the shearing driving means；Described armful
Tight mechanism includes being symmetricly set on a pair of holding sealing dampers of the body cavity both sides, and the holding sealing damper connection is embraced
Tight driving means, and sealing can hold the swab line tightly under the driving of the holding driving means.
2. double acting pumping blowout preventer as claimed in claim 1, it is characterised in that the shearing driving means include shearing liquid
Cylinder pressure and shear cylinder piston；The shearing hydraulic cylinder is connected to the side of the blowout preventer body structure, the shear cylinder piston
It is slidably arranged in the shearing hydraulic cylinder, the shear cylinder piston is provided with connecting rod towards the side of the body cavity, institute
The end for stating connecting rod reaches the shearing hydraulic cylinder outside and is connected with the shear ram.
3. double acting pumping blowout preventer as claimed in claim 1, it is characterised in that the holding driving means include holding liquid tightly
Cylinder pressure and holding cylinder piston；It is described to hold the side that hydraulic cylinder is connected to the blowout preventer body structure, the holding cylinder piston tightly
It is slidably arranged in the holding hydraulic cylinder, the holding cylinder piston is provided with connecting rod towards the side of the body cavity, institute
The end for stating connecting rod reaches the holding hydraulic cylinder outside and is connected with the holding sealing damper.
4. double acting pumping blowout preventer as claimed in claim 2 or claim 3, it is characterised in that the blowout preventer body structure is provided with
Upper flange, lower flange, shear ram sliding channel and holding sealing damper sliding channel；The body cavity is along the preventer
Agent structure it is axially extending, the both sides of the body cavity be symmetrical arranged the shear ram of perpendicular insertion slide it is logical
Road and the holding sealing damper sliding channel；Shear ram described in a pair is slidably arranged in the shear ram sliding channel
In, hold sealing damper described in a pair tightly and be slidably arranged in the holding sealing damper sliding channel.
5. double acting pumping blowout preventer as claimed in claim 1, it is characterised in that on the opposite end of shear ram described in a pair
It is respectively equipped with the shear blade that cutting edge is parallel and energy is interlaced.
6. double acting pumping blowout preventer as claimed in claim 2, it is characterised in that the inside of the shearing hydraulic cylinder is described
Shear cylinder piston is divided into pushing chamber and return cavity；The pushing chamber connects with inlet, the height entered by the inlet
Press liquid promotes the shear cylinder piston to move to the body cavity with the shear ram；The return cavity and liquid outlet
Connection, the liquid in the return cavity discharges the shearing hydraulic cylinder by the liquid outlet.
7. double acting pumping blowout preventer as claimed in claim 6, it is characterised in that the end of the shearing hydraulic cylinder is connected with
End cap, the end cap is provided with the inlet, the liquid outlet, feed pathway and apocenosis passage；The shearing hydraulic cylinder
Liquid outlet channel is provided with casing wall, the liquid outlet channel connects the return cavity with the apocenosis passage；The inlet passes through
The feed pathway is connected with the pushing chamber；The liquid outlet is returned by the apocenosis passage and the liquid outlet channel with described
Return chamber connection.
8. double acting pumping blowout preventer as claimed in claim 7, it is characterised in that be connected with lock valve on the end cap；Institute
State lock valve and be provided with retractable push rod, the push rod passes through the end cap and can be resisted against on the shear cylinder piston to be locked
Only.
9. double acting pumping blowout preventer as claimed in claim 3, it is characterised in that the inside of the holding hydraulic cylinder is described
Hold cylinder piston tightly and be divided into pushing chamber and return cavity；The pushing chamber connects with inlet, the height entered by the inlet
Press liquid promotes the holding cylinder piston to move to the body cavity with the holding sealing damper；The return cavity with go out
Liquid mouth is connected, and the liquid in the return cavity discharges the holding hydraulic cylinder by the liquid outlet.
10. double acting pumping blowout preventer as claimed in claim 9, it is characterised in that the end connection of the holding hydraulic cylinder
There is end cap, the end cap is provided with the inlet, the liquid outlet, feed pathway and apocenosis passage；The holding hydraulic cylinder
Casing wall in be provided with liquid outlet channel, the liquid outlet channel connects the return cavity with the apocenosis passage；The inlet leads to
Cross the feed pathway to connect with the pushing chamber；The liquid outlet by the apocenosis passage and the liquid outlet channel with it is described
Return cavity is connected.
11. double acting pumping blowout preventers as claimed in claim 10, it is characterised in that be connected with lock valve on the end cap；
The lock valve is provided with retractable push rod, and the push rod passes through the end cap and can be resisted against on the holding cylinder piston and carries out
Locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100297.4A CN106639957A (en) | 2016-12-02 | 2016-12-02 | Double-acting suction blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100297.4A CN106639957A (en) | 2016-12-02 | 2016-12-02 | Double-acting suction blowout preventer |
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| Publication Number | Publication Date |
|---|---|
| CN106639957A true CN106639957A (en) | 2017-05-10 |
Family
ID=58818441
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611100297.4A Pending CN106639957A (en) | 2016-12-02 | 2016-12-02 | Double-acting suction blowout preventer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796702A (en) * | 2021-03-17 | 2021-05-14 | 大庆市天德忠石油科技有限公司 | Sliding sleeve plate type oil drain device |
| WO2022067346A1 (en) * | 2020-09-28 | 2022-03-31 | Baker Hughes Oilfield Operations Llc | Gap control for wireline shear rams |
| CN114396241A (en) * | 2022-03-28 | 2022-04-26 | 四川新为橡塑有限公司 | Double-layer sealed spherical rubber core and annular blowout preventer |
| CN117072107A (en) * | 2023-10-16 | 2023-11-17 | 盐城市佳鑫石化机械制造有限公司 | Blowout preventer for oil well construction |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2937462Y (en) * | 2006-08-03 | 2007-08-22 | 河北华北石油荣盛机械制造有限公司 | Blow-out preventer of cable cutting hand flashboard for well repair |
| CN201024965Y (en) * | 2007-04-19 | 2008-02-20 | 中国石油化工股份有限公司江苏油田分公司石油工程技术研究院 | Pumping and drawing cutting ejection preventer |
| CN201620811U (en) * | 2010-01-25 | 2010-11-03 | 任源峰 | Hydraulic swab line cutting blowout preventer |
| CN201915889U (en) * | 2010-12-30 | 2011-08-03 | 宝鸡市赛孚石油机械有限公司 | Hydraulic control four-ram blowout preventer |
| CN202165044U (en) * | 2011-08-01 | 2012-03-14 | 任雁 | Blowout preventer for swabbing steel cable for oil field |
| CN202215189U (en) * | 2011-09-10 | 2012-05-09 | 山东临朐乾成石油机械有限公司 | Shearing and full-sealing double-gate-segment blowout preventer for oil field |
| CN202544807U (en) * | 2012-03-12 | 2012-11-21 | 江苏咸中石油机械有限公司 | Oil-fishing shearing sealing blowout preventer |
| CN204532222U (en) * | 2014-12-01 | 2015-08-05 | 中国石油天然气股份有限公司 | Wellhead blowout preventer |
-
2016
- 2016-12-02 CN CN201611100297.4A patent/CN106639957A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2937462Y (en) * | 2006-08-03 | 2007-08-22 | 河北华北石油荣盛机械制造有限公司 | Blow-out preventer of cable cutting hand flashboard for well repair |
| CN201024965Y (en) * | 2007-04-19 | 2008-02-20 | 中国石油化工股份有限公司江苏油田分公司石油工程技术研究院 | Pumping and drawing cutting ejection preventer |
| CN201620811U (en) * | 2010-01-25 | 2010-11-03 | 任源峰 | Hydraulic swab line cutting blowout preventer |
| CN201915889U (en) * | 2010-12-30 | 2011-08-03 | 宝鸡市赛孚石油机械有限公司 | Hydraulic control four-ram blowout preventer |
| CN202165044U (en) * | 2011-08-01 | 2012-03-14 | 任雁 | Blowout preventer for swabbing steel cable for oil field |
| CN202215189U (en) * | 2011-09-10 | 2012-05-09 | 山东临朐乾成石油机械有限公司 | Shearing and full-sealing double-gate-segment blowout preventer for oil field |
| CN202544807U (en) * | 2012-03-12 | 2012-11-21 | 江苏咸中石油机械有限公司 | Oil-fishing shearing sealing blowout preventer |
| CN204532222U (en) * | 2014-12-01 | 2015-08-05 | 中国石油天然气股份有限公司 | Wellhead blowout preventer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022067346A1 (en) * | 2020-09-28 | 2022-03-31 | Baker Hughes Oilfield Operations Llc | Gap control for wireline shear rams |
| US11692409B2 (en) | 2020-09-28 | 2023-07-04 | Baker Hughes Oilfield Operations Llc | Gap control for wireline shear rams |
| CN112796702A (en) * | 2021-03-17 | 2021-05-14 | 大庆市天德忠石油科技有限公司 | Sliding sleeve plate type oil drain device |
| CN112796702B (en) * | 2021-03-17 | 2021-10-15 | 大庆市天德忠石油科技有限公司 | Sliding sleeve plate type oil drain device |
| CN114396241A (en) * | 2022-03-28 | 2022-04-26 | 四川新为橡塑有限公司 | Double-layer sealed spherical rubber core and annular blowout preventer |
| CN114396241B (en) * | 2022-03-28 | 2022-06-10 | 四川新为橡塑有限公司 | Double-layer sealed spherical rubber core and annular blowout preventer |
| CN117072107A (en) * | 2023-10-16 | 2023-11-17 | 盐城市佳鑫石化机械制造有限公司 | Blowout preventer for oil well construction |
| CN117072107B (en) * | 2023-10-16 | 2024-01-26 | 盐城市佳鑫石化机械制造有限公司 | Blowout preventer for oil well construction |
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Application publication date: 20170510 |
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