CN202064893U - Device for opening and closing sleeve valve - Google Patents
Device for opening and closing sleeve valve Download PDFInfo
- Publication number
- CN202064893U CN202064893U CN2011201298310U CN201120129831U CN202064893U CN 202064893 U CN202064893 U CN 202064893U CN 2011201298310 U CN2011201298310 U CN 2011201298310U CN 201120129831 U CN201120129831 U CN 201120129831U CN 202064893 U CN202064893 U CN 202064893U
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- pin
- sleeve valve
- switch pipe
- pipe nipple
- seal head
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Abstract
The utility model discloses a device for opening and closing a sleeve valve, and relates to the technical field of related equipment of the sleeve valve in the well drilling or work-over treatment field of oil wells and gas wells. The device comprises a switch pup joint and a sealing head, wherein the sealing head is fixed at the front end of a pipe column in a well; and the switch pup joint is connected to the pipe column at the part behind the sealing head. When a sleeve valve is used for gas under-balanced drilling technology or work-over treatment, the opening and the closing of the sleeve valve depend on the driving of the pipe column during the tripping of the pipe column, so that extra power is not needed, the operation is simple, the closing is timely, the reliability is high, and the use is convenient.
Description
Technical field
The utility model relates to the sleeve valve relevant device technical field in oil, natural gas well drilling well or the workover treatment field, specifically, is a kind of opening closure that the sleeve valve of blowout takes place when preventing to pull out of hole.
Background technology
When using gas under-balanced drilling technology drilling well or carrying out workover treatment, because strata pressure greater than the pit shaft internal pressure, gaslift or blowout takes place easily in the process of making a trip.Method commonly used has two kinds:
The one, band is pressed and is made a trip, and band is pressed when making a trip, because down-hole pressure is big, needs to adopt in addition device, and the complicated operation and the speed that makes a trip are slow;
The 2nd, in the process of making a trip, use the well killing fluid kill-job earlier, make a trip then.But each kill-job operation is numerous and diverse and well killing fluid pollutes reservoir easily, influences the oil gas well yield.
Notice of authorization number is CN100545413C, notice of authorization day is that the Chinese patent in September 30 in 2009 discloses a kind of sleeve valve that blowout takes place when preventing to pull out of hole, it comprises valve body, opening device and shutoff device, top connection and lower contact are tightly connected, the core tube is in top connection, valve is connected with top connection by bearing pin, and torsion spring is connected on valve and the bearing pin, and shutoff device links to each other with drilling tool.Be connected with jump ring in the top connection.The method that blowout takes place when preventing to pull out of hole begins to be connected on the protective casing thereupon under the lower going-into-well, instrument will open, cut out under the situation of needs after going into the well operate as normal along with being lowered to, tripping out of drilling tool or workover tool, thereby prevent gases at high pressure or liquid overflow in the well.The use of this instrument can be optimized gas under-balanced drilling technology technology greatly, reduces the drillng operation time and avoids the pollution of drilling fluid to reservoir.
But above-mentioned sleeve valve, opening device and shutoff device need adopt extra power, poor reliability, the drive of tubing string when opening closure can not rely on lower tubular column and opening and closing automatically.
The utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of opening closure of sleeve valve, when it is used for the gas under-balanced drilling technology or carries out workover treatment at sleeve valve, the opening and closing of sleeve valve all are the drives of tubing string when having relied on lower tubular column, need not extra power, simple to operate, close in time, the reliability height, easy to use.
The utility model is realized by adopting following technical proposals:
A kind of sleeve valve opening closure is characterized in that: comprise switch pipe nipple and seal head, seal head is fixed on the front end of tubing string in the well, and the switch pipe nipple is connected on the seal head tubing string afterwards;
Described switch pipe nipple comprises switch pipe nipple body, carriage, jump ring, unlatching pin body, opens pin, closes the pin body, the pin gland, close pin, spring and bail, wherein carriage is fixed in the switch pipe nipple body by jump ring, closing the pin body is installed on the switch pipe nipple body, close described bail is installed in the pin body, the pin gland is installed in closes on the pin body, spring is installed on the bail, closing pin is threaded with bail, open the pin body and be installed on the switch pipe nipple body, open in the pin body unlatching pin is installed;
Described seal head comprises seal head body, packing element and pressure head, and wherein: on the seal head body packing element is installed, the seal head body is connected pressure head with packing element.
The described pin body of closing is installed on the switch pipe nipple body, and closes and adopt the sealing of the 3rd sealing ring between pin body and the switch pipe nipple body.
Described closing is equipped with described bail in the pin body, and closes and adopt the sealing of the 4th sealing ring between pin body and the bail.
In the described unlatching pin body unlatching pin is installed, opens the pin body and open employing first sealing ring and the sealing of second sealing ring between the pin.
Compared with prior art, the beneficial effects of the utility model show:
This opening closure comprises switch pipe nipple and seal head, seal head is fixed on the front end of tubing string in the well, the switch pipe nipple is connected on the seal head tubing string afterwards, such technical scheme, and switch pipe nipple and seal head are used, when running string in well, only seal head need be fixed on tubing string foremost, the switch pipe nipple is connected on the seal head tubing string afterwards, makes simultaneously to be full of liquid in the sleeve valve, normal then running string can be opened sleeve valve, carries out normal operation; When in well, tripping out tubing string, in the well head tubing string, to head shoot, normal then lift pipe string can be closed sleeve valve.Thereby when sleeve valve was used for the gas under-balanced drilling technology or carries out workover treatment, the opening and closing of sleeve valve all are the drives of tubing string when having relied on lower tubular column, need not extra power, and were simple to operate, close in time, and the reliability height, easy to use.
Description of drawings
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:
Fig. 1 is a switch pipe nipple structural representation.
Fig. 2 is the seal head structural representation
Fig. 3 is the carrier structure schematic diagram
Among the figure: 1, switch pipe nipple body; 2, connecting thread; 3, carriage; 4, jump ring; 5, open the pin body; 6, first sealing ring; 7, open pin; 8, second sealing ring; 9, the 3rd sealing ring; 10, close the pin body; 11, pin gland; 12, close pin; 13, spring; 14, the 4th sealing ring; 15, bail; 16, seal head body; 17, packing element; 18, pressure head; 19, pressure head through hole; 20, seal head body through-holes.
The specific embodiment
The utility model one better embodiment is:
A kind of opening closure of sleeve valve, comprise switch pipe nipple and seal head composition, seal head is fixed on the interior tubing string of well foremost, the switch pipe nipple is connected on the seal head tubing string afterwards, both are used, tubing string trips out and descends closing and opening of fashionable realization sleeve valve in well, thereby the gases at high pressure or the liquid on blocking-up stratum effectively improve the trip-out operating speed and contingent gas blowout accident can prevent to pull out of hole the time.The method that described realization sleeve valve is closed is: tubing string in tripping out well, in the time of need closing sleeve valve, pitching in the tubing string, open the pin of closing on the switch pipe nipple, it is up to close pin drive sleeve valve core tube, and the sleeve valve valve plate is closed under the active force of spring, scurries on the fluid under the blocking-up valve plate, the core tube is up closes pin after putting in place and is cut off, and tubing string can normally trip out in the well.The method that described realization sleeve valve is opened is: fill with liquid in the sleeve valve body, the seal head of opening closure is fixed on tubing string foremost, when seal head is descending when touching the sleeve valve valve plate, between seal head and top connection, form sealing, the intrinsic liquid of casing valve is along with the descending pressure of seal head raises gradually, when fluid pressure greater than valve plate under during the pressure of gas, valve plate is opened, seal head continues the descending sleeve valve that leaves, sleeve valve bottom pressure discharges, and the pit shaft internal pressure raises, and the unlatching pin under pressure is used on the switch pipe nipple stretches out, it is descending to drive the core tube, until valve plate is strutted fully.The unlatching pin was cut off after the core tube arrived desired location, and tubing string can carry out normal operation in the well.The switch pipe nipple of described opening closure, it is characterized in that: in the switch pipe nipple body 1 carriage 3 is housed, closing pin body 10 is installed on the switch pipe nipple body 1, close bail 15 is installed in the pin body 10, close pin gland 11 is installed on the pin body 10, spring 13 is installed on the bail 15, closes pin 12 and be connected on the bail 15; Open pin body 5 and be installed on the switch pipe nipple body 1, open to be equipped with in the pin body 5 and open pin 7.Packing element 17 is installed on the seal head body 16, is connected with pressure head 18.Be connected with jump ring 4 on the described carriage 3.Described switch pipe nipple body 1 and close the 3rd sealing ring 9 is arranged between the pin body 10, closing has the 4th sealing ring 14 between pin body 10 and the bail 15.Between described unlatching pin body 5 and the unlatching pin 7 first sealing ring 6 and second sealing ring 8 are arranged.Have hole 20 on the described seal head body.Have hole 19 on the described pressure head.
As preferred forms of the present utility model, as depicted in figs. 1 and 2, opening closure is made up of switch pipe nipple and seal head, seal head is fixed on the interior tubing string of well foremost, the switch pipe nipple is connected on the seal head tubing string afterwards, both are used, and tubing string trips out and descend closing and opening of fashionable realization sleeve valve in well, thus the gases at high pressure or the liquid on blocking-up stratum.The opening closure of sleeve valve, comprise switch pipe nipple and seal head, the switch pipe nipple is by switch pipe nipple body 1, connecting thread 2, carriage 3, jump ring 4, open pin body 5, first sealing ring 6, open pin 7, second sealing ring 8, the 3rd sealing ring 9, close pin body 10, pin gland 11, close pin 12, spring 13, the 4th sealing ring 14, bail 15 is formed, carriage 3 is fixed in the switch pipe nipple body 1 by jump ring 4, closing pin body 10 adopts screw thread to be installed on the switch pipe nipple body 1, and with the sealing of the 3rd sealing ring 9, close bail 15 is installed in the pin body 10, and with the sealing of the 4th sealing ring 14, pin gland 11 adopts screw thread to be installed in and closes on the pin body 10, spring 13 is installed on the bail 15, closes pin 12 and be threaded with bail 15 employings; Open pin body 5 and be installed on the switch pipe nipple body 1, open to be equipped with in the pin body 5 and open pin 7, and seal with first sealing ring 6 and second sealing ring 8; Seal head is made up of seal head body 16, packing element 17, pressure head 18, pressure head through hole 19, seal head body through-holes 20, packing element 17 is installed on the seal head body 16, be connected with pressure head 18, seal head body through-holes 20 is arranged on the seal head body, pressure head through hole 19 is arranged on the pressure head.
Fig. 1 is a switch pipe nipple structural representation, the switch pipe nipple is connected on the seal head tubing string afterwards, tubing string in tripping out well, in the time of need closing sleeve valve, pitching in the tubing string, open and close pin 12 on the switch pipe nipple, it is up to close pin 12 drive sleeve valve core tubes, and the sleeve valve valve plate is closed under the active force of spring, scurries on the fluid under the blocking-up valve plate, the core tube is up closes pin 12 after putting in place and is cut off, and tubing string can normally trip out in the well.
Fig. 2 is the seal head structural representation, when opening sleeve valve, in the sleeve valve body, fill with liquid, the seal head of opening closure is fixed on tubing string foremost, when seal head is descending when touching the sleeve valve valve plate, between seal head and top connection, form sealing, the intrinsic liquid of casing valve is along with the descending pressure of seal head raises gradually, when fluid pressure greater than valve plate under during the pressure of gas, valve plate is opened, seal head continues the descending sleeve valve that leaves, sleeve valve bottom pressure discharges, and the pit shaft internal pressure raises, and the unlatching pin 7 under pressure is used on the switch pipe nipple stretches out, it is descending to drive the core tube, until valve plate is strutted fully.Unlatching pin 7 was cut off after the core tube arrived desired location, and tubing string can carry out normal operation in the well.
Fig. 3 is carriage 3 structural representations, tubing string in tripping out well, and in the time of need closing sleeve valve, pitching in the tubing string moves downward carriage 3, and under spring 13 effects, bail 15 breaks away from carriages 3, makes to close pin 12 and stretch out.
Operating principle of the present utility model:
Sleeve valve is a kind of device that is used for gas under balance pressure drilling or workover treatment, can prevent gaslift phenomenon or contingent blowout when playing lower tubular column.Opening closure is the ingredient of sleeve valve, is made up of switch pipe nipple and seal head two parts.
When opening sleeve valve, in the sleeve valve body, fill with liquid, the seal head of opening closure is fixed on tubing string foremost, when seal head is descending when touching the sleeve valve valve plate, produce relative motion between seal head body 16 and the pressure head 18, compression packing element 17 forms sealing between seal head and sleeve valve core tube, liquid in the sleeve valve produces by pressure head through hole 19 and 20 pairs of packing elements of seal head body through-holes 17 and helps the envelope effect, can realize better sealing performance.The area difference that unlatching pin 7 on the switch pipe nipple utilizes sealing ring 6 and sealing ring 8 to form, can when raising, stretch out automatically pressure, when the descending pressure of the intrinsic liquid of casing valve along with seal head raises gradually, fluid pressure is during greater than the pressure of gas under the valve plate, valve plate is opened, seal head continues the descending sleeve valve that leaves, sleeve valve bottom pressure discharges, the pit shaft internal pressure raises, unlatching pin 7 on the switch pipe nipple stretches out under pressure, it is descending to drive the core tube, and unlatching pin 7 is cut off after valve plate is strutted fully, and the core tube arrives desired location.Seal head is an aluminium matter structure, if be drilling tool in the well, then seal head bored and can carry out normal drillng operation after broken.
Tubing string in tripping out well, in the time of need closing sleeve valve, pitching in the tubing string, carriage 3 is moved downward, under spring 13 effects, bail 15 breaks away from carriage 3, closes pin 12 and stretches out, be stuck in the groove of sleeve valve core tube inwall, it is up to drive the core tube, and the sleeve valve valve plate is closed under the active force of spring, scurries on the fluid under the blocking-up valve plate, the core tube is up closes pin 12 after putting in place and is cut off, and tubing string can normally trip out in the well.
Open pin 7 and close pin 12 and can trip out the back at tubing string and change, and carriage 3 and bail 15 are resetted, can realize the open and close function of sleeve valve once more on ground.
Claims (4)
1. sleeve valve opening closure is characterized in that: comprise switch pipe nipple and seal head, seal head is fixed on the front end of tubing string in the well, and the switch pipe nipple is connected on the tubing string after the seal head;
Described switch pipe nipple comprises switch pipe nipple body, carriage, jump ring, unlatching pin body, opens pin, closes the pin body, the pin gland, close pin, spring and bail, wherein carriage is fixed in the switch pipe nipple body by jump ring, closing the pin body is installed on the switch pipe nipple body, close described bail is installed in the pin body, the pin gland is installed in closes on the pin body, spring is installed on the bail, closing pin is threaded with bail, open the pin body and be installed on the switch pipe nipple body, open in the pin body unlatching pin is installed;
Described seal head comprises seal head body, packing element and pressure head, and wherein: on the seal head body packing element is installed, the seal head body is connected pressure head with packing element.
2. a kind of sleeve valve opening closure according to claim 1 is characterized in that: the described pin body of closing is installed on the switch pipe nipple body, and closes and adopt the sealing of the 3rd sealing ring between pin body and the switch pipe nipple body.
3. a kind of sleeve valve opening closure according to claim 1 and 2 is characterized in that: described closing is equipped with described bail in the pin body, and closes and adopt the sealing of the 4th sealing ring between pin body and the bail.
4. a kind of sleeve valve opening closure according to claim 3 is characterized in that: in the described unlatching pin body unlatching pin is installed, opens the pin body and open employing first sealing ring and the sealing of second sealing ring between the pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201298310U CN202064893U (en) | 2011-04-28 | 2011-04-28 | Device for opening and closing sleeve valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201298310U CN202064893U (en) | 2011-04-28 | 2011-04-28 | Device for opening and closing sleeve valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202064893U true CN202064893U (en) | 2011-12-07 |
Family
ID=45058761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201298310U Expired - Fee Related CN202064893U (en) | 2011-04-28 | 2011-04-28 | Device for opening and closing sleeve valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202064893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130939A (en) * | 2017-07-17 | 2017-09-05 | 东营市瑞丰石油技术发展有限责任公司 | Opened by pressure formula leak-resistance valve and switching device |
-
2011
- 2011-04-28 CN CN2011201298310U patent/CN202064893U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130939A (en) * | 2017-07-17 | 2017-09-05 | 东营市瑞丰石油技术发展有限责任公司 | Opened by pressure formula leak-resistance valve and switching device |
| CN107130939B (en) * | 2017-07-17 | 2023-04-18 | 东营市瑞丰石油技术发展有限责任公司 | Pressure opening type leakage-proof valve and switch device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20180428 |