CN2739354Y - Steam injection oil-extracting two-pipe well head device - Google Patents
Steam injection oil-extracting two-pipe well head device Download PDFInfo
- Publication number
- CN2739354Y CN2739354Y CN 200320106496 CN200320106496U CN2739354Y CN 2739354 Y CN2739354 Y CN 2739354Y CN 200320106496 CN200320106496 CN 200320106496 CN 200320106496 U CN200320106496 U CN 200320106496U CN 2739354 Y CN2739354 Y CN 2739354Y
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- China
- Prior art keywords
- valve
- steam injection
- hole
- via hole
- oil
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Abstract
The utility model discloses a steam injection oil-extracting two-pipe well head device and the utility model is especially suitable for the heavy crude well and the consecutive or intermittent thermal process oil well. The utility model mainly comprises an upper flange, a cross joint, a mandrel hanger, a steam injection valve, a polished rod sealing device, a decompression pipe and a producing valve. Two parallel eccentric steam injection via holes and an oil extraction via hole are provided on the upper flange. A testing valve is inner embedded on the upper part of the steam injection via hole, a heat insulation pipe pup joint is connected with the lower part of the steam injection via hole, and the steam injection valve is connected with the side via hole in the middle part. The polished rod sealing device is connected with the upper part of the oil extraction via hole, the mandrel hanger is hung in the lower part, and the producing valve is connected with the side via hole in the middle part. The oil extraction via hole of the upper flange is connected with the inner chamber of the cross joint through the decompression pipe. When the injection steam stuffs the well, the pressure in the inner chamber of the oil tube discharges in the sleeve pipe through the decompression pipe, which can reduce the accident rate.
Description
Technical field: the utility model relates to a kind of notes vapour oil recovery dual tubing wellhead, is specially adapted to the oil well of the continuous or intermittent thermal recovery of heavy oil wells.
Background technology: present widely used thermal recovery well head device is to adopt the single tube structure that can only annotate vapour, annotates vapour, vexed well earlier by thermal production well mouth and notes automobile fitting covering device, changes production wellhead and oil recovery corollary apparatus then, carries out oil producing operation again.Like this, duty cycle is longer, and the heat exhaustion loss is bigger.Mostly external existing two-tube well head is two hanger structures, and two boll-weevil hangers are on the same horizontal plane, and are placed side by side in sleeve pipe, uses less flow string in the sleeve pipe, and the wellhead assembly volume is bigger.Its four-way top of the two-tube well head of domestic production is connected to a spacer flanger, and tubing hanger is on spacer flanger, and the wellhead assembly whole height is higher to making, and volume is bigger, because sealing surface increases, leakage points is more.In addition, existing thermal recovery dual tubing wellhead, because one annotate vapour by all means, liquid in the another tubing string is because expanded by heating, pressure can't discharge, and down-hole string and ground wellhead assembly are caused damage easily.
Goal of the invention: the utility model provides a kind of compact conformation, the notes vapour oil recovery dual tubing wellhead that can allow the oil pipe chamber pressure leak.
Summary of the invention: the utility model is to realize like this, this annotates vapour oil recovery dual tubing wellhead by end flange, four-way, sleeve valve, the instlated tubular pipe nipple, upper flange, tubing nipple, tubing hanger, the thermometric pipe nipple, the steam injection valve door, the test valve, crossover sub, polished rod sealer, relief tube, produce valve, compositions such as restriction choke, its four-way top directly connects with upper flange, upper flange has the through hole of two parallel off-centre promptly to annotate vapour through hole and oil recovery through hole, annotate vapour through hole top build-in-test valve, the bottom is processed as tubing thread, directly connect the instlated tubular pipe nipple, middle bypass connects the steam injection valve door, forms to annotate the vapour passage; Oil recovery through hole top connects polished rod sealer by crossover sub, and the lower end, hole is a taper hole, charge of oil pipe hanger in the taper hole, and the middle bypass product valve of delivering a child forms the oil recovery passage; The four-way bottom connects end flange, and the four-way inner chamber links through end flange inner chamber and cannula cavity; Upper flange oil recovery through hole and four-way inner chamber are communicated with through relief tube.When annotating the vexed well of vapour, close sleeve valve, the production valve on test valve, four-way right side, open the sleeve valve in steam injection valve door, four-way left side, steam injects oil reservoir fusing viscous crude by thermometric pipe nipple, steam injection valve door, instlated tubular pipe nipple, instlated tubular, sleeve pipe, temperature in the oil pipe rises under the effect of vapours, forms high pressure chest on tubing hanger top, and the pressure process relief tube in the high pressure chest is in the pressure release of four-way inner chamber, avoid pressure to leak, the minimizing accident takes place.When oil producing operation, close test valve, the sleeve valve on four-way right side, steam injection valve door, open sleeve valve, the production valve in four-way left side, the crude oil in the oil pipe is transported to petroleum pipeline by oil pipe, tubing nipple, tubing hanger, production valve, restriction choke, finishes oil producing operation.
Description of drawings: Fig. 1 is the utility model structure principle chart.
Below in conjunction with accompanying drawing the utility model is described in detail.
The specific embodiment: the utility model is by end flange (1), four-way (2), sleeve valve (3), instlated tubular pipe nipple (4), upper flange (5), tubing nipple (6), tubing hanger (7), thermometric pipe nipple (8), steam injection valve door (9), test valve (10), crossover sub (11), polished rod sealer (12), relief tube (13), produce valve (14), restriction choke (15), sleeve valve compositions such as (18), its four-way (2) top directly connects with upper flange (5), upper flange has the through hole of two parallel off-centre promptly to annotate vapour through hole and oil recovery through hole, annotate vapour through hole top build-in-test valve (10), the bottom is processed as tubing thread, directly connect instlated tubular pipe nipple (4), middle bypass connects steam injection valve door (9), forms to annotate the vapour passage; Oil recovery through hole top connects polished rod sealer (12) by crossover sub (11), and the lower end, hole is a taper hole, charge of oil pipe hanger (7) in the taper hole, and middle bypass is delivered a child and is produced valve (14), forms the oil recovery passage; Four-way (2) bottom connects end flange (1), and four-way (2) inner chamber links through end flange (1) inner chamber and sleeve pipe (19) inner chamber; Upper flange (5) oil recovery through hole and four-way (2) inner chamber are communicated with through relief tube (13).When annotating the vexed well of vapour, close test valve (10), the sleeve valve (18) on four-way (2) right side, produce valve (14), open steam injection valve door (9), the sleeve valve (3) in four-way (2) left side, steam is by thermometric pipe nipple (8), steam injection valve door (9), instlated tubular pipe nipple (4), instlated tubular (17), sleeve pipe (19) injects oil reservoir and dissolves viscous crude, temperature in the oil pipe (16) rises under the effect of vapours, form a high pressure chest on tubing hanger (7) top, pressure process relief tube (13) in the high pressure chest is in four-way (2) inner chamber pressure release, avoid pressure to leak, the minimizing accident takes place.When oil producing operation, close test valve (10), the sleeve valve (18) on four-way (2) right side, steam injection valve door (9), open sleeve valve (3), the production valve (14) in four-way (2) left side, underground crude oil enters the oil recovery through hole by oil pipe (16), tubing nipple (6), tubing hanger (7), be transported to petroleum pipeline through production valve (14), restriction choke (15), finish oil producing operation.
Claims (1)
1, a kind of notes vapour oil recovery dual tubing wellhead, by end flange (1), four-way (2), sleeve valve (3), instlated tubular pipe nipple (4), upper flange (5), tubing nipple (6), tubing hanger (7), thermometric pipe nipple (8), steam injection valve door (9), test valve (10), crossover sub (11), polished rod sealer (12), relief tube (13), produce valve (14), restriction choke compositions such as (15), it is characterized in that four-way (2) top directly connects with upper flange (5), the vapour through hole of notes and oil recovery through hole are arranged on the upper flange (5), annotate vapour through hole top a build-in-test valve (10) is arranged, the bottom is a tubing thread, oil recovery through hole top connects polished rod sealer (12), the lower end, hole is a taper hole, tubing hanger (7) is housed in the taper hole, and the oil recovery through hole of upper flange (5) and four-way (2) inner chamber are communicated with by relief tube (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320106496 CN2739354Y (en) | 2003-10-22 | 2003-10-22 | Steam injection oil-extracting two-pipe well head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320106496 CN2739354Y (en) | 2003-10-22 | 2003-10-22 | Steam injection oil-extracting two-pipe well head device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2739354Y true CN2739354Y (en) | 2005-11-09 |
Family
ID=35354420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320106496 Expired - Fee Related CN2739354Y (en) | 2003-10-22 | 2003-10-22 | Steam injection oil-extracting two-pipe well head device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2739354Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340735C (en) * | 2005-12-19 | 2007-10-03 | 辽河石油勘探局 | Well head device for thick oil extraction by horizontal well SAGD process |
| CN103867147A (en) * | 2012-12-13 | 2014-06-18 | 中国石油天然气股份有限公司 | Coal bed gas well parallel pipe no-killing well coal powder discharging system |
| CN111395987A (en) * | 2019-01-03 | 2020-07-10 | 中国石油天然气股份有限公司 | Water injection well Christmas tree and water injection method |
-
2003
- 2003-10-22 CN CN 200320106496 patent/CN2739354Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340735C (en) * | 2005-12-19 | 2007-10-03 | 辽河石油勘探局 | Well head device for thick oil extraction by horizontal well SAGD process |
| CN103867147A (en) * | 2012-12-13 | 2014-06-18 | 中国石油天然气股份有限公司 | Coal bed gas well parallel pipe no-killing well coal powder discharging system |
| CN111395987A (en) * | 2019-01-03 | 2020-07-10 | 中国石油天然气股份有限公司 | Water injection well Christmas tree and water injection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |