CN104912516B - Ground controllable type underground switch valve - Google Patents
Ground controllable type underground switch valve Download PDFInfo
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- CN104912516B CN104912516B CN201510271525.3A CN201510271525A CN104912516B CN 104912516 B CN104912516 B CN 104912516B CN 201510271525 A CN201510271525 A CN 201510271525A CN 104912516 B CN104912516 B CN 104912516B
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- outer barrel
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Abstract
The invention provides a ground controllable type underground switch valve. The valve comprises an outer cylinder, a connecting body, a sealing assembly, a locking block seat, a locking block, an inner sleeve, a sleeve and an upper joint. The upper end of the outer cylinder is in threaded connection with the lower end of the connecting body, and the connecting body is sleeved with the sealing assembly; the upper end of the connecting body is in threaded connection with the lower end of the locking block seat, the inner cylinder is sleeved with the locking block seat, and the locking block seat is in sliding connection with the inner cylinder; the locking block is embedded in the middle portion of the locking block seat, and the upper end of the locking block seat is in threaded connection with the sleeve. The inner cylinder is in threaded connection with the upper joint, and a locking ring for preventing the inner cylinder from moving upwards is in threaded connection with the upper end of the locking block seat; slope steps which are matched are arranged between the locking block and the inner cylinder, and a valve body is arranged in the outer cylinder; and a fluid channel communicated with a liquid inlet in the lower end of the outer cylinder is arranged between the valve body and the outer cylinder, and when the valve body is closed or opened, the fluid channel is cut off or communicated. The ground controllable type underground switch valve is high in safety, high in stability and convenient to fish, the valve can be easily controlled to be opened and closed, and repeated opening and closing can be achieved.
Description
Technical field
The invention belongs to oil gas field completion steel wire operation technical field, and in particular to a kind of surface controllable tries down-hole switch
Valve.
Background technology
In completion steel wire operation field, when having oil pipe completion, underground open and close well is realized usually using circulation slide sleeve, set up
With closing circulation canal；During tubingless completion, then need to realize underground by the down-hole switch instrument of preset (steel wire operation)
Drive a well and closing well.
Underground switching valve i.e. storm valve, storm valve are a kind of wells for preventing blowout, ensureing production safety
Lower instrument.Often occur causing hydrocarbon due to the winning apparatus reason such as break down in oil exploration industry, when carrying out underground work
The situation of class rate of flow of fluid increase, is at this moment accomplished by closing fluid passage in time, it is ensured that operation is complete, it is to avoid bigger thing occurs
Therefore.In actual production, fluid passage is closed usually using storm valve, realized in oil pipe when there are abnormal conditions in well
The block function of fluid.
Environmental protection and safety in production are increasingly paid attention in countries in the world, and safety in production of many countries to Oil/gas Well has in detail
Thin legal provisions, emphasize be located at densely populated areas, Important Economic area, ocean and territorial water body, blowing may occur or
The excessive Oil/gas Well of person will install storm valve.At present, domestic Shanghai is fitted with underground by the Oil/gas Well of blowing ability
Safety valve, the land oil field also practical safety valve in Oil/gas Well more and more.
In celebrating southern Jiangsu project completion steel wire operation field long, 3.5 inches of single cased hole completions are used, by steel wire operation
Down-hole switch instrument is installed in preset seating nipple to realize driving a well and closing well for underground.Open Schlumberger clock type underground
Pass instrument is attached in well after seating nipple, and driving a well for underground is realized in the preset time by electronic timer and electric machine.
In use, existence and stability is poor, underground fault rate is higher, the problem that can not switch repeatedly for the instrument.The instrument is salvaged
Footpath is 1.75 inches, larger with gap between oil pipe tube wall in 3.5 inches of oil pipes (2.922 inches of internal diameter), easily product
Tire out deposit and be difficult to salvage, larger risk is caused to construction.
The content of the invention
It is an object of the invention to overcome in the prior art, Schlumberger clock type down-hole switch instrument is in use
The stability of presence is poor, underground fault rate is higher, the problems such as can not switch repeatedly and to solve to salvage footpath because of the instrument be 1.75
Inch, larger with gap between oil pipe tube wall in 3.5 inches of oil pipes (2.922 inches of internal diameter), easy accumulation of deposits
And be difficult to salvage, the problem of larger risk is caused to construction.
Therefore, the invention provides the safe, stability of one kind it is strong, be easy to salvage, switch it is easily controllable, can realize instead
The surface controllable examination underground switching valve of multiple switch.
The technical scheme is that：A kind of surface controllable formula underground switching valve, including outer barrel, connector, seal assembly,
Closing piece seat, closing piece, inner cylinder, sleeve and top connection, the upper end of the outer barrel is threadedly coupled with the lower end of connector, on connector
Be arranged with seal assembly, the upper end of connector be threadedly coupled with the lower end of closing piece seat, closing piece cover for seat be located at the outside of inner cylinder and with
Inner cylinder is slidably connected, and the closing piece is embedded in the middle part of closing piece seat, and the upper end of closing piece seat is connected with bush whorl；Inner cylinder connects with above
It is threadedly coupled between head；Closing piece seat threaded upper ends are connected with the clamp ring for preventing inner cylinder from moving up, and are set between closing piece and inner cylinder
There is the slope step of mutual cooperation, valve body is provided with the outer barrel, outer barrel lower end inlet is communicated between valve body and outer barrel
Fluid passage, the fluid passage when the valve body is closed be cut off, when the valve body is opened connection.
Above-mentioned valve body is stifled including piston cylinder, valve element and bottom；O is threadedly coupled and is provided between the middle part of piston cylinder and outer barrel
Type sealing ring, is provided with liquid-through hole and lower liquid-through hole on the wall of piston cylinder side；The piston cylinder removes middle part threaded joints exceptionally, its
Fluid passage is provided between outer surface and the inner surface of outer barrel；The lower end of the valve element is provided with the piston being slidably connected with piston cylinder
One, the piston two being slidably connected with piston cylinder is provided with the middle part of valve element；When valve body is closed piston one be located at live
The stifled contact in the bottom of plug cylinder bottom, and piston two is between upper and lower liquid-through hole；The upper end of the valve element is additionally provided with fishing neck；When
When valve body is in open mode, piston one is located at the upper position of lower position and piston two positioned at upper liquid-through hole of lower liquid-through hole
Put.
O-ring seal is equipped between above-mentioned piston one and piston two and piston cylinder.
Jump ring is provided between above-mentioned valve element upper end and outer barrel, jump ring upper end is provided with the gland for stopping that valve element is moved up, pressure
Lid and outer barrel between be provided be threaded on outer tube inner wall for adjust and stationary gland position interior hexagonal cylindrical head spiral shell
Nail.
The quantity of above-mentioned closing piece is 3, and is uniformly distributed in along the circumference of closing piece seat.
O-ring seal is provided between above-mentioned outer barrel and connector.
Above-mentioned seal assembly is tubular structure, and its material is rubber.
Fixing top connection and subtracting for horizontal between top connection and sleeve is connected with the inside of above-mentioned sleeve upper end
To the block of the direct impulsive force of sleeve when small top connection is up.
Beneficial effects of the present invention：The deficiency that the present invention exists for Schlumberger clock type down-hole switch instrument, there is provided
A kind of brand-new underground switching valve, the underground switching valve realizes the open and close of underground valve body by way of steel wire operation, can be accurate
The time of true controlling switch well；By using supporting salvaging 1.375 " it is outer salvage footpath on hit fishing socket of slipping out of the hand, blind hammer work
Tool can realize the unlatching repeatedly of underground switching valve, close so that work progress is safe and efficient.Salvaging footpath of the invention is designed as
With pipe aperture (2.922 " close 2.313 "), in order to salvage.Relative to Schlumberger clock type underground switching valve, its tool
Have that safe, stability is strong, be easy to salvage, switch it is easily controllable, the distinguishing feature such as open and close well repeatedly can be realized.
The present invention is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is system structure diagram of the invention；
Schematic diagram when Fig. 2 (a) is present invention switch closure；
Fig. 2 (b) is schematic diagram when present invention switch is opened；
Fig. 3 (a) is to be about to the schematic diagram that closing piece struts closing piece position when the present invention is in the lock state under inner cylinder；
Fig. 3 (b) is the signal at closing piece position when the up closing piece of inner cylinder is in the free position present invention in released state
Figure；
Fig. 4 (a) be clamp ring be in free state when schematic diagram；
Fig. 4 (b) be clamp ring be in squeezed state when schematic diagram.
Description of reference numerals：1st, outer barrel；2nd, bottom is blocked up；3rd, piston cylinder；4th, valve element；5th, jump ring；6th, gland；7th, connector；8、
Seal assembly；9th, closing piece seat；10th, closing piece；11st, inner cylinder；12nd, clamp ring；13rd, block；14th, sleeve；15th, top connection；16th, piston
One；17th, fluid passage；18th, upper liquid-through hole；19th, hexagon socket cap head screw；20th, lower liquid-through hole；21st, piston two.
Specific embodiment
The present invention seeks to overcome Schlumberger clock type down-hole switch instrument in the prior art to exist in use
Stability is poor, underground fault rate is higher, can not switch repeatedly problem and solve to salvage footpath for 1.75 inches because of the instrument,
It is larger with gap between oil pipe tube wall in 3.5 inches of oil pipe (2.922 inches of internal diameter), easy accumulation of deposits and it is difficult to beat
Drag for, the problem of greater risk is caused to construction.The present invention is that a kind of safe, stability is strong, be easy to salvage, switch and be easy to control
Make, can realize that the surface controllable opened repeatedly tries underground switching valve.
Embodiment 1：
A kind of surface controllable formula underground switching valve as shown in Figure 1, including outer barrel 1, connector 7, seal assembly 8, closing piece
Seat 9, closing piece 10, inner cylinder 11, sleeve 14 and top connection 15, the upper end of the outer barrel 1 are threadedly coupled with the lower end of connector 7,
Seal assembly 8 is arranged with connector 7, the upper end of connector 7 is threadedly coupled with the lower end of closing piece seat 9, and closing piece seat 9 is sheathed on interior
The outside of cylinder 11 is simultaneously slidably connected with inner cylinder 11, and closing piece 10 (as shown in Figure 3) is inlaid with the middle part of closing piece seat 9, and closing piece 10 can
To stretch out and bounce back.The upper end of closing piece seat 9 is threadedly coupled with sleeve 14；It is threadedly coupled between inner cylinder 11 and top connection 15；Closing piece
9 threaded upper ends of seat are connected with and prevent the clamp ring 12 that moves up of inner cylinder 11, are connected with the inside of the upper end of sleeve 14 positioned above connecing
The block 13 for laterally fixed top connection 15 between first 15 and sleeve 14, clamp ring 12 and block 13 are used to limit inner cylinder 11
Sliding position in sleeve 14；The slope step of mutual cooperation is provided between closing piece 10 and inner cylinder 11, inner cylinder 11 is in sleeve 14
Inside having sliding space can slide up and down, the slope step of set mutual cooperation on inner cylinder 11 and closing piece 10, by inner cylinder 11
Diverse location realize the folding of closing piece 10；Valve body is provided with the outer barrel 1, is communicated between valve body and outer barrel 1 under outer barrel 1
Hold the fluid passage 17 of inlet, the fluid passage 17 to be cut off when the valve body is closed, connected when the valve body is opened.
The quantity of the closing piece 10 is 3, and is uniformly distributed in along the circumference of closing piece seat 9, in stress with good
Stability.
O-ring seal is provided between the outer barrel 1 and connector 7.
The seal assembly 8 is the tubular structure that rubber does, and its Main Function is to seal blanking plug outer barrel and be located pipe nipple
Annular section, gasket design quantity is 6,3 be a prescription to consistent, 2 groups of packing rings are in opposite direction, respectively subject upwards or
The downward active force of person, there is certain sealing function in free state to sealing drum, but sealing is not thorough, when by from it
Packing ring deformation is turned up and absolute sealing function is played to sealing drum during upper or its lower active force.
The specific mosaic mode of the closing piece 10 is：Three closing pieces are triangular in shape to be symmetrically distributed in around closing piece seat 9, is such as schemed
Shown in 3, when inner cylinder 11 is descending, closing piece is strutted, instrument is locked in pit shaft；When inner cylinder 11 is up, closing piece is in freely
Position, instrument is in released state.The block 13 is four piece of 1/4 circular block, an annulus is assembled into, to top connection 15
Transverse direction is fixed and the impact of buffering top connection 15 and sleeve 14.
As shown in figure 4, the clamp ring 12 is " C " the shape ring that can produce deformation, it is enclosed within recessed set by the outer wall of inner cylinder 11
On groove, for the axial restraint of top connection 15, closing piece 9 upper sleeve end faces of seat are designed as 30 ° of chamferings, clamp ring external margin
It is 45 ° of chamferings, plays very big squeezing action when top connection 15 is descending to clamp ring 12, clamp ring 12 starts to be squeezed by free state
Compressive strain, diameter is started zooming out, when effect reaches clamp ring undergauge to the state that can enter sleeve, at this moment locking spindle and lock
Collar starts synchronously to move down, and clamp ring is initially entered in clamp ring groove, and now the reducing table top of inner cylinder 11 forces closing piece to stretch out,
The lower surface of top connection 15 is contacted with the upper surface of sleeve 14, and instrument is fixed, and setting locking is completed.
Embodiment 2：
On the basis of embodiment 1, as shown in Figures 1 and 2, the valve body includes piston cylinder 3, valve element 4 and bottom stifled 2；
O-ring seal is threadedly coupled and be provided between the middle part of piston cylinder 3 and outer barrel 1, and the He of liquid-through hole 18 is provided with the side wall of piston cylinder 3
Lower liquid-through hole 20；The piston cylinder 3 exceptionally, is provided with stream except middle part threaded joints between the inner surface of its outer surface and outer barrel 1
Body passage 17；The lower end of the valve element 4 is provided with the piston 1 being slidably connected with piston cylinder 3, and the middle part of valve element 4 is provided with and piston
The piston 2 21 that cylinder 3 is slidably connected；When valve body is closed, piston 1 connects with the bottom stifled 2 positioned at the bottom of piston cylinder 3
Touch, and piston 2 21 is located at upper and lower liquid-through hole 18, between 20；The upper end of the valve element 4 is additionally provided with fishing neck；When valve body is in
During open mode, piston 1 is located at the upper position of lower position and piston 2 21 positioned at upper liquid-through hole 18 of lower liquid-through hole 20
Put；Slided up and down in the piston cylinder 3 of valve body by valve element 4, can link up or close fluid passage.Piston 1 and work
Fill in and be equipped with O-ring seal between 2 21 and piston cylinder 3.
Be provided with jump ring 5 between the upper end of the valve element 4 and outer barrel, the upper end of jump ring 5 be provided with stop valve element 4 move up it is spacing
Gland 6, gland 6 limits valve element 4 by step prominent on valve element 4 beyond spacing.Screw thread is provided between gland 6 and outer barrel 1
Be connected in the protruding parts of the inwall of outer barrel 1 for adjust and the position of stationary gland 6 hexagon socket cap head screw 19.Cause
This, the purpose of jump ring 5 and gland 6 is the position of fixed spool 4, and hexagon socket cap head screw 19 is used to adjust and stationary gland 6.
Concrete practice application of the invention：In the well well completing test operation of Chang Qing companies, by steel wire operation by this human relations
Shellfish thanks to clock type underground switching valve being located in pipe nipple at 3835.46 meters, well head no pressure after 72 hours, and by electricity
Sub- pressure gauge detection liquid level position is not changed in, and judges underground switching valve not in preset time unlatching in (72 hours), immediately under
Enter fishing tool to be salvaged, to catch hit on after instrument switch valve can not be salvaged for tens of times and be located pipe nipple, to avoid accident
Being followed closely by shearing pin makes fishing tool exit fishing neck, by increasing pulling force, jarring number of times and power after taking-up fishing tool
Degree, fails of the effect.
Thinking between fishing neck and pit shaft has impurity to deposit, and causes the instrument to be difficult to unseal.In subsequent identical geology feelings
In the Chang Qing companies well well completing test operation of condition, by steel wire operation by provided in the present embodiment we are homemade mechanical
Underground switching valve is arranged on being located in pipe nipple at 3923.32 meters, by entering opener under steel wire operation after 96 hours, catches
After controlling switch fishing neck, valve member is once successfully opened in upward jarring, continues jarring 4 times, and opener is slipped out of the hand, and takes out steel wire work
Tool string, successfully completes underground and drives a well.
The underground switching valve provided using the present embodiment is in a certain purpose well completing test job execution in Chang Qing companies southern Jiangsu
In, switching tools under first lower going-into-well, instrument connection monitoring pressure gauge 2, instrument is closed, and passes through before productivity test
Special fishing tool enters well and catches valve element 4, and upward jarring opens it, after productivity test 7 days, under enter blind hammer instrument and shake downwards
Hit, close valve element so as to realize downhole closing, down-hole pressure measures the strata pressure recovery situation of the well, after pressure detecting January,
Special fishing tool is descended again, and switch valve is opened.
This time construction realizes a closing well, drives a well twice, is and once succeeds, and obtains Construction Party and highly praises.Table 1
The Contrast on effect table in construction for prior art and the present invention.
Table 1：Prior art and the present invention Contrast on effect table in construction
The invention belongs to mechanical downhole switch valve, it has the following characteristics that：
1 mechanical open closing well, it is easy to control, stability is strong；
2) " shell clearance is smaller, is difficult deposition, is easy to salvage to salvage footpath and 3.5；
3) it is capable of achieving to switch well repeatedly；
4) it is capable of achieving to switch well at any time；
5 operating risks are smaller.
Wherein mechanical open closing well is completed by steel wire operation, and it is 1.375 that internal control switch well salvages footpath ".
Salvaging footpath of the invention is 2.313 ", it is interior salvaging mode.
The present invention realize repeatedly switch well kit be respectively salvaging 1.375 " salvage footpath on hit fishing socket of slipping out of the hand,
Blind hammer instrument.
The underground switching valve by the sealing assembly 8 on its outer barrel and pit shaft be located pipe nipple inwall formed microgap be combined it is close
Envelope is so as to seal oil pipe；By special fishing socket and blind hammer instrument, control valve element 4 is moved up and down, and reaches the purpose of open and close well.
During installation, the valve is thrown to be located pipe nipple in pit shaft by steel wire operation mode, is carried out downwards using bumper jar
Jarring, block 13 is sliped off, and top connection 15 and inner cylinder 11 are moved down in sleeve 14, and closing piece 10 opens in closing piece seat 9, clamp ring 12
Fixed, sealing assembly 8 is close to be located pipe nipple inwall, switch valve is fixed on and is located in pipe nipple and is formed sealing with tube inner wall.
Continue downward jarring shearing release pin, delivery tool (GS) is slipped out of the hand with switch valve, reclaims steel wire operation tool string.
During closing well, by entering special blind hammer instrument under steel wire operation mode, jarring is carried out downwards using bumper jar, valve element 4 exists
Moved down in valve body, О type circles sealed outer cylinder 1 and valve element 4 on piston one and piston two, the middle part of piston cylinder 3 and outer barrel 1 it
Between O-ring seal sealed outer cylinder 1 and piston cylinder 3 set by threaded connection place, set O-shaped sealing between outer barrel 1 and connector 7
The whole oil pipe of circle sealing realizes closing well.Reclaim steel wire operation tool string.
When driving a well, by entering special fishing socket under steel wire operation mode, after catching valve element 4, shaken upwards using bumper jar
Hit, valve element 4 in the valve body on move, so as to connect oil-gas Layer and pit shaft, realize driving a well.Jump ring 5 and gland 6 are used to fixed spool 4
Position, hexagon socket cap head screw 19 be used to adjust with stationary gland 6, continuing up carries out jarring, shears release pin, special
Fishing socket (JU) is slipped out of the hand with valve element, reclaims steel wire operation tool string.
During recovery, by entering fishing tool (GS) under steel wire operation mode, after catching fishing neck, carried out upwards using bumper jar
Jarring, top connection 15 and inner cylinder 11 in the sleeve 14 on move, closing piece 10 is shunk, and underground switching valve is discharged from being located in pipe nipple, to
Steel wire operation tool string is gone up out, you can reclaim the valve.
The present invention is opened for the not enough this brand-new underground for providing that Schlumberger clock type down-hole switch instrument is present
Close valve, the open and close of underground valve body realized by way of steel wire operation, can accurate controlling switch well time；By using
Supporting salvaging 1.375 " is outer salvage footpath on hit fishing socket of slipping out of the hand, blind hammer instrument and can realize opening repeatedly for underground switching valve
Open, close so that work progress is safe and efficient.Salvaging footpath of the invention is designed as with pipe aperture that (2.922 is " close
2.313 "), in order to salvage.Relative to Schlumberger clock type underground switching valve, it has safe, stability by force, just
In salvage, switch it is easily controllable, the distinguishing feature such as open and close well repeatedly can be realized.
There is no the part for describing in detail to belong to the known conventional means of the industry in present embodiment, do not chat one by one here
State.It is exemplified as above be only to of the invention for example, do not constitute the limitation to protection scope of the present invention, it is every with this
The same or analogous design of invention is belonged within protection scope of the present invention.
Claims (7)
1. a kind of surface controllable formula underground switching valve, including outer barrel (1), connector (7), seal assembly (8), closing piece seat (9), lock
Block (10), inner cylinder (11), sleeve (14) and top connection (15), it is characterised in that：The upper end of the outer barrel (1) and connector
(7) lower end threaded connection, is arranged with seal assembly (8), under the upper end of connector (7) and closing piece seat (9) on connector (7)
End threaded connection, closing piece seat (9) is sheathed on the outside of inner cylinder (11) and is slidably connected with inner cylinder (11), and the closing piece (10) is inlayed
In the middle part of closing piece seat (9), the upper end of closing piece seat (9) is threadedly coupled with sleeve (14)；Between inner cylinder (11) and top connection (15)
Threaded connection；Closing piece seat (9) threaded upper ends are connected with and prevent inner cylinder (11) clamp ring (12) for moving up, closing piece (10) with it is interior
It is provided between cylinder (11) in the slope step of mutual cooperation, the outer barrel (1) and is provided with valve body, is provided between valve body and outer barrel (1)
The fluid passage (17) of outer barrel (1) lower end inlet is connected, the fluid passage (17) is cut off when the valve body is closed, in institute
State when valve body is opened and connect；
The valve body includes that (2) are blocked up at piston cylinder (3), valve element (4) and bottom；Screw thread between the middle part of piston cylinder (3) and outer barrel (1)
O-ring seal is connected and be provided with, liquid-through hole (18) and lower liquid-through hole (20) are provided with the wall of piston cylinder (3) side；The piston cylinder
(3) except middle part threaded joints exceptionally, it is provided with fluid passage (17) between the inner surface of its outer surface and outer barrel (1)；The valve
The lower end of core (4) is provided with the piston one (16) being slidably connected with piston cylinder (3), is provided with sliding with piston cylinder (3) in the middle part of valve element (4)
The piston two (21) of dynamic connection；When valve body is closed, piston one (16) is stifled (2) with the bottom for being located at piston cylinder (3) bottom
Contact, and piston two (21) is between upper and lower liquid-through hole (18,20)；The upper end of the valve element (4) is additionally provided with fishing neck；When
Valve body be in open mode when, piston one (16) positioned at lower liquid-through hole (20) lower position and piston two (21) positioned at upper logical liquid
The top position in hole (18).
2. a kind of surface controllable formula underground switching valve as claimed in claim 1, it is characterised in that：The piston one (16) and
O-ring seal is equipped between piston two (21) and piston cylinder (3).
3. a kind of surface controllable formula underground switching valve as claimed in claim 1, it is characterised in that：Valve element (4) upper end and
Jump ring (5) is provided between outer barrel, jump ring (5) upper end is provided with the gland (6) for stopping that valve element (4) is moved up, gland (6) and outer barrel
(1) be provided between be threaded on outer barrel (1) inwall for adjust and stationary gland (6) position interior hexagonal cylindrical head spiral shell
Nail (19).
4. a kind of surface controllable formula underground switching valve as claimed in claim 1, it is characterised in that：The quantity of the closing piece (10)
It is 3, and is uniformly distributed in along the circumference of closing piece seat (9).
5. a kind of surface controllable formula underground switching valve as claimed in claim 1, it is characterised in that：The outer barrel (1) be connected
Body is provided with O-ring seal between (7).
6. a kind of surface controllable formula underground switching valve as claimed in claim 1, it is characterised in that：The seal assembly (8) is
Tubular structure, its material is rubber.
7. a kind of surface controllable formula underground switching valve as claimed in claim 1, it is characterised in that：Sleeve (14) upper end
Inner side is connected with fixing top connection (15) and reducing top connection for horizontal between top connection (15) and sleeve (14)
(15) to the block (13) of the direct impulsive force of sleeve (14) when up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510271525.3A CN104912516B (en) | 2015-05-25 | 2015-05-25 | Ground controllable type underground switch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510271525.3A CN104912516B (en) | 2015-05-25 | 2015-05-25 | Ground controllable type underground switch valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104912516A CN104912516A (en) | 2015-09-16 |
| CN104912516B true CN104912516B (en) | 2017-05-24 |
Family
ID=54081909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510271525.3A Expired - Fee Related CN104912516B (en) | 2015-05-25 | 2015-05-25 | Ground controllable type underground switch valve |
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| Country | Link |
|---|---|
| CN (1) | CN104912516B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4457377A (en) * | 1982-09-03 | 1984-07-03 | Halliburton Company | Sliding valve float collar |
| CN201546675U (en) * | 2009-11-17 | 2010-08-11 | 中国石油天然气股份有限公司 | Interlayer control valve used for well completion |
| CN202117628U (en) * | 2011-07-05 | 2012-01-18 | 中国石油集团海洋工程有限公司 | Liquid flow diversion valve |
| CN103742102A (en) * | 2014-01-09 | 2014-04-23 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Preset packer and packing and fishing tool |
| CN204738785U (en) * | 2015-05-25 | 2015-11-04 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Controllable formula in ground is ooff valve in pit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2495230C1 (en) * | 2012-03-27 | 2013-10-10 | Владимир Анатольевич Уфимцев | Needle valve for pressure gage |
-
2015
- 2015-05-25 CN CN201510271525.3A patent/CN104912516B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4457377A (en) * | 1982-09-03 | 1984-07-03 | Halliburton Company | Sliding valve float collar |
| CN201546675U (en) * | 2009-11-17 | 2010-08-11 | 中国石油天然气股份有限公司 | Interlayer control valve used for well completion |
| CN202117628U (en) * | 2011-07-05 | 2012-01-18 | 中国石油集团海洋工程有限公司 | Liquid flow diversion valve |
| CN103742102A (en) * | 2014-01-09 | 2014-04-23 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Preset packer and packing and fishing tool |
| CN204738785U (en) * | 2015-05-25 | 2015-11-04 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Controllable formula in ground is ooff valve in pit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104912516A (en) | 2015-09-16 |
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