CN202467761U - Novel Christmas tree oil pipe cap with safety gate device - Google Patents
Novel Christmas tree oil pipe cap with safety gate device Download PDFInfo
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- CN202467761U CN202467761U CN2012200656549U CN201220065654U CN202467761U CN 202467761 U CN202467761 U CN 202467761U CN 2012200656549 U CN2012200656549 U CN 2012200656549U CN 201220065654 U CN201220065654 U CN 201220065654U CN 202467761 U CN202467761 U CN 202467761U
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Abstract
The utility model discloses a novel Christmas tree oil pipe cap with a safety gate device. The Christmas tree oil pipe cap comprises an oil pipe cap shell, a valve cover, a gate and a valve rod, wherein the gate is in a cylindrical shape, penetrates through the middle of the oil pipe cap shell and is sealed with upper and lower inner walls of the oil pipe cap shell completely; a gate glue core is formed at the contact position of the inner side of the gate and the oil pipe cap shell; an upper pressure observation watch assembly and a lower pressure observation watch assembly are arranged on the oil pipe cap shell; the valve cover is arranged outside the gate; a transverse guide rod for guiding the valve rod is arranged between the valve cover and the gate; one end of the valve rod penetrates through the valve cover transversely and extends into the gate, and the other end of the valve rod is provided with a power propulsion device; and the inclined plane of the inner end face of the valve cover is contacted with the inclined plane of the front end face of the valve rod tightly to form return sealing. The Christmas tree oil pipe cap has the capacity of closing a fluid channel effectively and achieving a function of the 'zero' closing of the fluid channel; and when the joint of an oil extraction and gas extraction tree or a valve is needed to be repaired or replaced due to leakage, the Christmas tree oil pipe cap is quick and easy to operate, low in cost and safe.
Description
Technical field
The utility model relates to a kind of oil pipe cap, relates in particular to the production tree oil pipe cap that has the emergency lock panel assembly in a kind of christmas tree that is applied to recover the oil, and belongs to the oil equipment with oil recovery christmas tree technical field.
Background technology
After the oil recovery christmas tree is oil-gas drilling, the well control equipment during completion, its structural representation is seen shown in Figure 1, the oil recovery christmas tree is being undertaken the important mission to oil-gas mining.The oil recovery christmas tree is in long-term oil recovery, gas production process, and its inside contacts with the natural gas fluid with crude oil always.In the oil gas of different regions, can contain poisonous and corrosive substances such as in various degree hydrogen sulfide, carbon dioxide.These materials can produce corrosion or the broken destruction of hydrogen to the metal material of oil recovery christmas tree valve, and the connecting portion of oil recovery christmas tree valve or valve seal were lost efficacy under different temperatures and environment, leakage phenomena occurs.In case the leakage of oil recovery christmas tree occurs, will bring very serious consequence like untimely processing, the poisonous and harmful substance in its leakage will work the mischief to the life of people, animal, also can cause serious environmental to pollute simultaneously, even cause the ecological property disaster.
Existing production tree oil pipe cap 101 is commonly called as " cuckold lid " at the scene, is mounted in the oil pipe cap (being crossover flange) above the oil recovery christmas tree tubing head (being big four), is the important link between oil recovery christmas tree and the tubing head.
Seepage appears in oil recovery christmas tree connecting portion or valve, and particularly when a main valve need be repaired or change, traditional processing method had following several kinds usually:
Method 1: close oil recovery christmas tree main valve, the valve of main valve back is changed or repaired, recover normal safety in production again.If the well that main valve damage to lose efficacy, just can only select other more the complex processing method split out the replacing main valve.
Method 2: minority is equipped with the well of " storm valve ", can close storm valve after, overhaul again and change oil recovery christmas tree valve.But because storm valve costs an arm and a leg, complete at present leaning on from external import, thereby only big or contain in the emphasis oil field well of high concentration toxic and harmful and just can install and use in minority output, most oil gas wells all are not equipped with storm valve.
Method 3: adopt the band pressure to change valve gear and change valve.In the oil recovery gas recovery well, pressure is arranged, even under the situation of high pressure, press band and change valve gear and send into a BPV valve with pressing mode and do obstruction; Block the special-purpose screw thread that the tubing head inner oil tube hangs up; Sealing is blocked and is cut off after the lower flow pressure, and valve is changed in maintenance, perhaps changes the oil recovery christmas tree.This method is owing to be the band press operation, and its risk is very big, presses the performance of changing valve gear and operating procedure and operating personnel's in-situ processing experience and technical level all had very high requirement grasping band.Change in the valve process in the band pressure, in case operate miss will cause immeasurable personnel casualty accidents.Just once blanking plug took place goes out the painful accident that causes casualties to operation site.
Method 4: carry out kill job, from new rig or the workover rig gone up, the configuration drilling fluid carries out kill job, under the prerequisite of well head safe, changes valve or changes the oil recovery christmas tree.This method need drop into a large amount of funds, human and material resources and time.
The utility model content
The purpose of the utility model is: a kind of novel oil production christmas tree oil pipe cap that has emergent emergency lock panel assembly is provided; Solve in the prior art: seepage appears in oil recovery christmas tree connecting portion or valve; Particularly when a main valve need be repaired or change, can not be fast, the technical problem of simple, low cost and safe handling.
The purpose of the utility model is to realize through following technical proposals: a kind of novel oil production tree oil pipe cap that has the emergency lock panel assembly; Fluid passage, oil pipe cap housing, valve gap, flashboard and valve rod comprising the oil recovery christmas tree; Oil pipe cap housing is mounted between oil recovery christmas tree tubing head and the oil recovery christmas tree, substitutes original oil pipe cap, and the hydrocarbon fluids passage passes through from the centre; Said flashboard is cylindrical; It passes the middle part of oil pipe cap housing, and hermetically sealed with the inwall up and down of oil pipe cap housing, flashboard inboard and establish flashboard glue core with oil pipe cap housing contact position; On oil pipe cap housing, establish upward pressure observation watch assembly and downforce observation watch assembly; Valve gap is located at the outside of flashboard; Establish the laterally steering bar of guides stem between valve gap and the flashboard; One end of valve rod is horizontally through valve gap and stretches in the flashboard, and the other end is established Powerpush Unit, and said valve gap inner face inclined-plane closely contacts with valve rod front end inclined-plane and forms back the seat sealing.
As a kind of optimal way, establish the valve stem seal packing on the said valve rod, establish valve rod packing pressure cap in the outside of valve stem seal packing.
As a kind of optimal way wherein; Said Powerpush Unit is a hand; It comprises the bearing support that handwheel and tape spool hold, and bearing support is located on the valve rod in the valve gap outside, and handwheel is located at the outside of bearing support; The valve rod helmet is established in valve rod end in the handwheel outside, on the valve rod helmet, establishes valve rod peep hole helmet.
As other a kind of optimal way, said Powerpush Unit is a fluid pressure type, and it comprises fluid cylinder and lining, and said fluid cylinder is located on the valve rod in the valve gap outside, and said lining is located on the valve rod in the fluid cylinder outside, establishes the standard-sized sheet safety card in its end.
As further optimal way, establish piston that can drive valve rod and the spring that promotes piston in the fluid cylinder, fluid cylinder peripheral hardware sealing cylinder cap.
As further optimal way, the end of valve rod is established one and is closed lock nut.
As further optimal way, said flashboard upward pressure observation table assembly installing hole and the flashboard downforce observation table assembly installing hole of on the upper and lower chamber of oil pipe cap housing, being respectively equipped with.
The characteristics of part and effect are as follows in the utility model:
Oil pipe cap housing: be used to install the emergency lock panel assembly; On traditional production tree, increase oil pipe cap housing,, strengthened its safety in order to replace old-fashioned oil pipe cap.
Flashboard: close after flashboard blocks the fluid passage, can dismantle, repair or change, will practice thrift a large amount of funds than traditional processing method, human and material resources and time to main valve of oil recovery christmas tree and all other above valve; Function with " zero " closed fluid passages; In addition, change blind rams into half envelope flashboard, also can satisfy the needs of special operation condition and special operation.
The cylinder design of flashboard: have that the pressure of bearing and intensity height, long service life, handling ease, machining accuracy are controlled easily, are prone to assembling, field repair is changed characteristics simply and easily.Lock is pulled and can both be sealed up and down, has not only solved in emergency circumstances, and shutoff device cuts off the fluid passage, defective that can't pressure testing after having solved simultaneously that production tree is on-the-spot and installing.
Guide peg: prevent that flashboard from rotating or stuck phenomenon when axially moving horizontally.
Flashboard returns the seat sealing: returning the seat sealing is a kind of seal form of metal to metal; Because the design of emergency lock panel assembly has adopted the advantage of preventer and these two kinds of form of structure of valve and reliability to be applied on the production tree oil pipe cap; After putting in place at the unlatching flashboard, the sloping platform rank of valve rod closely contact with the sloping platform rank of valve gap inner face and form back the seat sealing, and flashboard can unload lower bearing under the standard-sized sheet situation; Unload lower valve rod packing pressure cap and change the packing of seepage, in time handled at the scene.
Standard-sized sheet safety card and lining: be a safety device, flap arrangement is loaded onto after unlatching, promptly or left and right sides oil cylinder does not have pressure; Because lining withstands on valve rod on the cylinder cap, the standard-sized sheet safety card is with in lining and valve rod one card lifting, and valve rod and piston can not before move; Valve rod is motionless; Circular flashboard and glue core on the valve rod can not before move, and spring is in compressive state all the time and can't opens, and played the unlatching safe condition of guaranteeing flashboard.
Upward pressure observation watch assembly on the flashboard and downforce observation watch assembly: can to the oil pressure of the well head of closed front end with close after the sealing situation, carry out remote control observation with the time fit and observe; Solve on-the-spot pressure testing difficulty behind the production tree or the problem that can't pressure testing of installing; Implement the oil pipe cap close, when opening, the time fit the pressure changing of observation front/back cavity, guarantee the handling safety when changing the valve operation.
Compared with prior art; The beneficial effect of the utility model: the utility model production tree oil pipe cap is applied to the advantage of preventer and these two kinds of form of structure of valve and reliability on the production tree oil pipe cap, makes the oil pipe cap possess the ability of effectively closing the fluid passage, realizes the function of " zero " closed fluid passages; Seepage is appearring when oil recovery christmas tree connecting portion or valve; When need repairing or changing, realize simple to operate, quick, low cost and safe handling, be embodied in:
The emergency lock panel assembly is designed with manual control and two kinds of form of structure of hydraulic control, and the user can select for use according to different operating mode demands and install manually or hydraulic way, and is very convenient;
The closed safe flap arrangement can be dismantled, repair or change main valve of oil recovery christmas tree and all other above valve, realizes simple to operately, quick, increases work efficiency;
After adopting this emergency lock panel assembly, reduced valve dismounting, reparation or the risk when changing, the cost that makes valve dismantle, repair or change reduces, and safety is increased.
Description of drawings
Fig. 1 is the structural representation of production tree in the prior art;
Fig. 2 is the structural representation of the utility model production tree oil pipe cap;
Fig. 3 is a manually control oil pipe cap open mode sketch map of the utility model embodiment 1;
Fig. 4 is a manually control oil pipe cap closed condition sketch map of the utility model embodiment 1;
Fig. 5 is the face of the bowing sketch map of Fig. 4;
Fig. 6 is the utility model embodiment 2 hydraulic control oil pipe cap open mode sketch mapes;
Fig. 7 is the utility model embodiment 2 hydraulic control oil pipe cap closed condition sketch mapes;
The face of the bowing sketch map of Fig. 7 of Fig. 8;
Fig. 9 is back the enlarged diagram of seat seals at.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is further described.
Disclosed all characteristics in this manual, or the step in disclosed all methods or the process are except the speciality of mutual repulsion and/or the step; All can make up by any way; Only if special narration all can be replaced by other equivalences or the alternative features with similar purpose, promptly; Only if special narration, an embodiment in a series of equivalences of each characteristic or the similar characteristics.
As shown in Figure 2; The utility model has the novel oil production tree oil pipe cap of emergency lock panel assembly; The oil circuit 18, oil pipe cap housing 1, valve gap 2, flashboard 3 and the valve rod 4 that comprise production tree; Oil pipe cap housing is mounted between oil recovery christmas tree tubing head and the oil recovery christmas tree, substitutes original oil pipe cap, and the hydrocarbon fluids passage passes through from the centre.Said flashboard 3 is cylindrical, and it passes the middle part of oil pipe cap housing 1, and hermetically sealed with the inwall up and down of oil pipe cap housing 1, flashboard 3 inboard and establish flashboard glue core 5 with oil pipe cap housing 1 contact position; On oil pipe cap housing 1, establish upward pressure observation watch assembly 83 and downforce observation watch assembly 84; Valve gap 2 is located at the outside of flashboard 3; Establish the laterally steering bar 9 of guides stem 4 between valve gap 2 and the flashboard 3; One end of valve rod 4 is horizontally through valve gap 2 and stretches in the flashboard 3, and the other end is established Powerpush Unit 17, and said valve gap 2 inner face inclined-planes closely contact with valve rod 4 front end inclined-planes and form back seat sealing 18; Establish valve stem seal packing 41 on the said valve rod 4, establish valve rod packing pressure cap 42 in the outside of valve stem seal packing 41.
Like Fig. 3,4, shown in 5, embodiment 1:
Said Powerpush Unit 17 is a hand; It comprises that handwheel 7 and tape spool hold 6 bearing support 61; Bearing support 61 is located on the valve rod 4 in valve gap 2 outsides; Handwheel 7 is located at the outside of bearing support 61, establishes valve rod helmet 43 in valve rod 4 ends in handwheel 7 outsides, on valve rod helmet 43, establishes valve rod helmet peep hole 44.Said oil circuit 18 is positioned at and is respectively equipped with flashboard upward pressure observation table assembly installing hole 81 and flashboard downforce observation table installing hole 82 on the upper and lower chamber of flashboard 3.
The operating principle of manual control mode:
A. closed safe flap arrangement production tree oil pipe cap:
Clockwise direction rotates handwheel; Handwheel drives the nut rotation simultaneously; Drive screw axis and advance to level, promote circular flashboard simultaneously and travel forward along guide peg up and down, the glue core on lock is pulled and the other side's flashboard glue core crashes and closes up; Oil pipe cap fluid passage is blocked in realization, and the tightness of closing changes with the pressure of observing flashboard upper pressure observation watch.
The oil gas well is closed lock when producing and is pulled, because upper and lower cavity pressure is balance, it is safe and reliable closing that lock pulls, and can directly close the operation of oil pipe cap flap arrangement.
Close lock in the time of will and changing the production tree valve for maintenance and pull, need slowly release the pressure of top production tree, and observe the situation of change of pressure tabular value, pull at lock and close under the complete leak free situation, just can overhaul and more change jobs.
B. open emergency lock panel assembly production tree oil pipe cap:
The counter rotation handwheel; Handwheel drives nut rotation simultaneously, and screw axis is return to level, and screw mandrel also drives circular flashboard and draws back along guide peg up and down; Glue core on the circular flashboard separates with the other side's flashboard glue core simultaneously, realizes opening oil pipe cap fluid passage.
When opening lock and pulling, pressure meter has pressure reduction as long as lock is pulled up and down, all should inject equilibrium pressure or release the pressure on top to top, make lock pull up and down pressure meter force value unanimity after, could open lock and pull.
Shown in Fig. 6-9, embodiment 2:
Said Powerpush Unit 17 is a fluid pressure type, and it comprises fluid cylinder 10 and lining 14, and said fluid cylinder 10 is located on the valve rod 4 in valve gap 2 outsides, and said lining 14 is located on the valve rod 4 in fluid cylinder 10 outsides, establishes standard-sized sheet safety card 16 in its end; Establish piston 11 that can drive valve rod 4 and the spring 13 that promotes piston 11 in the fluid cylinder 10, fluid cylinder 10 peripheral hardwares sealing cylinder cap 13; Establish one in the end of liquid valve rod 4 and close lock nut 15.Said oil circuit 18 is positioned at and is respectively equipped with cavity pressure observation table installing hole 82 under flashboard upward pressure observation table assembly installing hole 81 and the flashboard on the upper and lower chamber of flashboard 3.
The operating principle of hydraulic control mode:
The emergency lock panel assembly production tree oil pipe cap of hydraulic control mode; Can on long-range hydraulic control box, implement the motor performance of closing and opening of emergency lock panel assembly production tree oil pipe cap executing agency; Both can pressurize, also can pressurize with hydraulic hand-pump with electric hydraulic pump.
A. closed safe flap arrangement production tree oil pipe cap:
At first on hydraulic control box, left and right sides oil cylinder is implemented pressurized operation, unload standard-sized sheet safety card and lining after, operate through on hydraulic control box, implementing pressure release then; Because after the left and right sides oil cylinder pressure release of emergency lock panel assembly production tree oil pipe cap; Compressed spring recovers elastic force and promotes piston, and piston drives valve rod and promotes circular flashboard and move horizontally forward simultaneously, and glue core on lock is pulled and the other side's lock are pulled the glue core and crashed and close up; Load onto and close lock nut, realize blocking oil pipe cap fluid passage.
Hydraulic pressure closed safe flap arrangement production tree oil pipe cap shows, with the manual close operation unanimity, does not do tired stating at this.
Closing lock nut is a safety device, and it and cylinder cap link together, and cylinder cap and fluid cylinder link together, and fluid cylinder links together with front end housing again, and front end housing and oil pipe cap housing link together.Its effect is after oil pipe cap flashboard cuts out, and promptly or maloperation hydraulic pressure gets into oil cylinder and all can't open flashboard, plays the safety operation of guaranteeing after flashboard cuts out.
B. open emergency lock panel assembly production tree oil pipe cap:
Unload and close lock nut, through on hydraulic control box, implementing pressurized operation, hydraulic oil gets into left and right sides fluid cylinder simultaneously; Piston outwards axially moves horizontally under the effect of pressure, the Piston Compression spring, and the while piston drives circular flashboard with valve rod and outwards moves; Glue core on the circular flashboard separates with the other side's flashboard glue core; Realize to open oil pipe cap fluid passage, load onto lining and standard-sized sheet safety card after, can stop the operation of pressurizeing to oil cylinder.
Hydraulic pressure opening emergency lock panel assembly production tree oil pipe cap is consistent with manually opened operation, does not do tired stating at this.
The installation of the utility model oil pipe cap and pressure testing are operated as follows:
1, install:
⑴, emergency lock panel assembly production tree oil pipe cap when dress production tree or old well well workover finish the installation production tree, replace old-fashioned oil pipe cap when new well completion, be installed in tubing head big four top;
⑵, production tree are installed in the top of emergency lock panel assembly oil pipe cap;
⑶, the old-fashioned oil pipe cap of aspect ratio that emergency lock panel assembly oil pipe cap is housed are higher, to installing and use has no effect.
2, pressure testing
(1), after emergency lock panel assembly production tree oil pipe cap installs, must be according to the technical requirements of description, to each road sealing the carrying out greasing between tubing hanger and the oil pipe cap or pressure testing after the assay was approved, can carry out further work.
(2), after production tree installs, close the emergency lock panel assembly on the production tree oil pipe cap, the injection pressure liquid from production tree top carries out the pressure testing check under the rated operating pressure to all valves, and pressure and voltage stabilizing time must reach user's standard-required.
(3), open the tubing head bypath valve during pressure testing; And the situation of change of observation emergency lock panel assembly production tree oil pipe cap upward pressure tabular value; Each valve of emergency lock panel assembly and production tree should be tested in low pressure and high pressure (rated operating pressure scope), does not all have to leak to qualified.
Adopted emergency lock panel assembly oil pipe cap; When a main valve seepage need repair or change; As long as closed the emergent emergency lock panel assembly on the production tree oil pipe cap, just can produce parts such as valve, right oil pressure production valve, clear cured valve and other screw thread flange, tubing thread plug, tree cap to a main valve on the oil recovery christmas tree, 2# main valve, left oil pressure and repair or change.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (7)
1. a novel oil production that has the emergency lock panel assembly is set the oil pipe cap; It is characterized in that: comprising oil pipe cap housing (1), valve gap (2), flashboard (3) and valve rod (4); Said flashboard (3) is cylindrical; It passes the middle part of oil pipe cap housing (1), and hermetically sealed with the inwall up and down of oil pipe cap housing (1), flashboard (3) inboard and establish flashboard glue core (5) with oil pipe cap housing (1) contact position; On oil pipe cap housing (1), establish upward pressure observation watch assembly (83) and downforce observation watch assembly (84); Valve gap (2) is located at the outside of flashboard (3); Establish the laterally steering bar (9) of guides stem (4) between valve gap (2) and the flashboard (3); One end of valve rod (4) is horizontally through valve gap (2) and stretches in the flashboard (3), and the other end is established Powerpush Unit (17), and said valve gap (2) inner face inclined-plane closely contacts with valve rod (4) front end inclined-plane and forms back seat sealing (18).
2. the novel oil production tree oil pipe cap that has the emergency lock panel assembly as claimed in claim 1 is characterized in that: establish valve stem seal packing (41) on the said valve rod (4), establish valve rod packing pressure cap (42) in the outside of valve stem seal packing (41).
3. the novel oil production tree oil pipe cap that has the emergency lock panel assembly as claimed in claim 2; It is characterized in that: said Powerpush Unit (17) is a hand; It comprises that handwheel (7) and tape spool hold the bearing support (61) of (6); Bearing support (61) is located on the valve rod (4) in valve gap (2) outside; Handwheel (7) is located at the outside of bearing support (61), establishes valve rod helmet (43) in valve rod (4) end in handwheel (7) outside, on valve rod helmet (43), establishes valve rod peep hole helmet (44).
4. the novel oil production tree oil pipe cap that has the emergency lock panel assembly as claimed in claim 2; It is characterized in that: said Powerpush Unit (17) is a fluid pressure type; It comprises fluid cylinder (10) and lining (14); Said fluid cylinder (10) is located on the valve rod (4) in valve gap (2) outside, and said lining (14) is located on the valve rod (4) in fluid cylinder (10) outside, establishes standard-sized sheet safety card (16) in its end.
5. the novel oil production tree oil pipe cap that has the emergency lock panel assembly as claimed in claim 4; It is characterized in that: establish piston (11) that can drive valve rod (4) and the spring (13) that promotes piston (11) in the fluid cylinder (10), fluid cylinder (10) peripheral hardware sealing cylinder cap (13).
6. the novel oil production tree oil pipe cap that has the emergency lock panel assembly as claimed in claim 5 is characterized in that: establish one in the end of valve rod (4) and close lock nut (15).
7. like the described novel oil production tree oil pipe cap that has the emergency lock panel assembly of arbitrary claim in claim 3 or 6, it is characterized in that: said flashboard upward pressure observation table assembly installing hole (81) and the flashboard downforce observation table assembly installing hole (82) of on the upper and lower chamber of oil pipe cap housing (1), being respectively equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200656549U CN202467761U (en) | 2012-02-27 | 2012-02-27 | Novel Christmas tree oil pipe cap with safety gate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200656549U CN202467761U (en) | 2012-02-27 | 2012-02-27 | Novel Christmas tree oil pipe cap with safety gate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467761U true CN202467761U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200656549U Expired - Fee Related CN202467761U (en) | 2012-02-27 | 2012-02-27 | Novel Christmas tree oil pipe cap with safety gate device |
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| CN (1) | CN202467761U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306633A (en) * | 2013-06-28 | 2013-09-18 | 邯郸市翔龙地质勘探有限公司 | Blowout control device for water detecting and draining drill hole |
| CN107002477A (en) * | 2014-10-23 | 2017-08-01 | 艾尼股份公司 | Valve assembly and control method for extraction well in emergency |
| CN112065371A (en) * | 2019-06-10 | 2020-12-11 | 中国石油天然气股份有限公司 | Gas monitoring system and Christmas tree |
| CN113006736A (en) * | 2021-05-25 | 2021-06-22 | 东营政阳自动化科技有限公司 | Corrosion-resistant well head production tree device with adjustable proclaim oneself type |
-
2012
- 2012-02-27 CN CN2012200656549U patent/CN202467761U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306633A (en) * | 2013-06-28 | 2013-09-18 | 邯郸市翔龙地质勘探有限公司 | Blowout control device for water detecting and draining drill hole |
| CN107002477A (en) * | 2014-10-23 | 2017-08-01 | 艾尼股份公司 | Valve assembly and control method for extraction well in emergency |
| CN107002477B (en) * | 2014-10-23 | 2020-04-14 | 艾尼股份公司 | Valve assembly and control method for extraction wells in emergency situations |
| US10801288B2 (en) | 2014-10-23 | 2020-10-13 | Eni S.P.A. | Valve assembly and control method for extraction wells under emergency conditions |
| CN112065371A (en) * | 2019-06-10 | 2020-12-11 | 中国石油天然气股份有限公司 | Gas monitoring system and Christmas tree |
| CN113006736A (en) * | 2021-05-25 | 2021-06-22 | 东营政阳自动化科技有限公司 | Corrosion-resistant well head production tree device with adjustable proclaim oneself type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20150227 |
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| EXPY | Termination of patent right or utility model |