CN101158279A - Novel SAGD process thermal recovery well head device - Google Patents
Novel SAGD process thermal recovery well head device Download PDFInfo
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- CN101158279A CN101158279A CNA200710158070XA CN200710158070A CN101158279A CN 101158279 A CN101158279 A CN 101158279A CN A200710158070X A CNA200710158070X A CN A200710158070XA CN 200710158070 A CN200710158070 A CN 200710158070A CN 101158279 A CN101158279 A CN 101158279A
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Abstract
The invention relates to a novel SAGD heat-extraction well-mouth device used for an oil field thick oil steam gravity assistant oil-releasing process. The invention consists of a well-closing device, an oil-pipe head different-diameter adapter, a suspension seal device, an oil-pipe suspender, a plane gate valve and a four-way of an oil-pipe head. The well-closing device is seated on a connecting flange and is fixed through a bolt, and the oil-pipe head different-diameter adapter is arranged on an upper part of the device and on a lower part of the well-closing device and is sealed by a steel ring. The oil-pipe head different-diameter adapter is embedded into the connecting flange and is firmly pressed by a propping screw. The suspension seal device is welded with a thick flange, a positioning pin is arranged on the oil-pipe suspender, and the suspender is seated on a step in an upper part of the four-way of an oil-pipe head. Two guiding grooves are respectively arranged on a front side and a back side of the four-way of an oil-pipe head. The plane gate valve is connected with the four-way of an oil-pipe head through the bolt. The invention solves the problem of the prior art that the oil-pipe head different-diameter adapter is seated in the oil-pipe suspender in the existing well-mouth device, and taking the oil-pipe down should also take the devices above the oil-pipe and then the next work can be done. The invention can be widely applied to the thick oil extraction work.
Description
Technical field:
The present invention relates to a kind of Novel SAGD process thermal recovery well head device that a kind of oil-field thick-oil SAGD production practice is used.
Background technology:
Oilfield exploitation viscous crude technical development at present is very fast, and along with the development of thickened oil recovery technology, thick oil horizontal well SAGD (SAGD) process application increases gradually, is applicable to that the wellhead assembly of this technology also increases.Retrieval the present invention on October 9th, 2007 has novelty creativeness (numbering G0720590) through State Intellectual Property Office patent retrieval center, the invention the most close with the present invention is that application number is 200510130819.0 well head device for thick oil extraction by horizontal well SAGD process, the problem that it exists is that the tubing head reducing joint is sitting in the boll-weevil hanger in this device, the parts that connect oil pipe and install more than the thick flange need be taken off when removing the oil pipe operation and can carry out next step operation, simultaneously also higher to thick flange and boll-weevil hanger requirement on machining accuracy.
Summary of the invention:
The purpose of this invention is to provide a kind of Novel SAGD process thermal recovery well head device, this device solves in the former SAGD technology thermal recovery well head device that exists in the prior art tubing head reducing joint be sitting in the boll-weevil hanger, need when removing the oil pipe operation coiled tubing and the parts that install more than the thick flange are taken off the problem that can carry out next step operation.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Novel SAGD process thermal recovery well head device is by the closing well device, the tubing head reducing joint, suspension sealing device, boll-weevil hanger, flat gate valve, the tubing head four-way is formed: the closing well device is sitting in and uses bolt on the adpting flange, the tubing head reducing joint is located at this closing well device bottom, device top and seals with steel ring, the tubing head reducing joint is embedded in the adpting flange and compresses with jackscrew, suspension sealing device and the welding of thick flange, on boll-weevil hanger, be provided with alignment pin, hanger is sitting on the step of tubing head four-way internal upper part, both sides are provided with two gathering sills before and after the tubing head four-way, and flat gate valve is connected with tubing head four-way bolt.Thermal recovery well head device should at first be assembled DN52, DN80 flat gate valve, closing well device and other each parts when assembling by accompanying drawing; Both sides are provided with on two gathering sills, the boll-weevil hanger and are provided with alignment pin before and after the tubing head four-way, can make the boll-weevil hanger accurate positioning.
The invention has the beneficial effects as follows; improve the oil pipe suspended structure; rational in infrastructure; more convenient reliable during operation; when needs are examined pump and are removed the oil pipe operation, need not remove continuous tubing string and protection tubing string thereof, only need unload the closing well device with top; tubing nipple is connected with the tubing head reducing joint, just can plays the lower tubular column operation.
Description of drawings:
Accompanying drawing is a structural representation of the present invention.
Among the figure 1, the closing well device, 2, the tubing head reducing joint, 3, suspension sealing device, 4, boll-weevil hanger, 5, flat gate valve, 6, the tubing head four-way.
The specific embodiment:
In the accompanying drawings, a kind of Novel SAGD process thermal recovery well head device is by closing well device 1, tubing head reducing joint 2, suspension sealing device 3, boll-weevil hanger 4, flat gate valve 5, tubing head four-way 6 is formed: closing well device 1 is sitting in and uses bolt on the adpting flange, tubing head reducing joint 2 is located at this closing well device 1 bottom, device top and seals with steel ring, tubing head reducing joint 2 is embedded in the adpting flange and compresses with jackscrew, suspension sealing device 3 and thick flange welding, on boll-weevil hanger 4, be provided with alignment pin, boll-weevil hanger 4 is sitting on the step of tubing head four-way 6 internal upper parts, be provided with two gathering sills in both sides, tubing head four-way 6 front and back, flat gate valve 5 is connected with tubing head four-way 6 bolts.
Claims (1)
1. a Novel SAGD process thermal recovery well head device is by closing well device (1), tubing head reducing joint (2), suspension sealing device (3), boll-weevil hanger (4), flat gate valve (5), tubing head four-way (6) is formed, it is characterized in that: closing well device (1) is sitting in and uses bolt on the adpting flange, tubing head reducing joint (2) is located at this device top closing well device (1) bottom and seals with steel ring, tubing head reducing joint (2) is embedded in the adpting flange and compresses with jackscrew, suspension sealing device (3) and thick flange welding, on boll-weevil hanger (4), be provided with alignment pin, boll-weevil hanger (4) is sitting on the step of tubing head four-way (6) internal upper part, both sides are provided with two gathering sills before and after tubing head four-way (6), and flat gate valve (5) is connected with tubing head four-way (6) bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710158070XA CN101158279A (en) | 2007-11-12 | 2007-11-12 | Novel SAGD process thermal recovery well head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710158070XA CN101158279A (en) | 2007-11-12 | 2007-11-12 | Novel SAGD process thermal recovery well head device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101158279A true CN101158279A (en) | 2008-04-09 |
Family
ID=39306494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710158070XA Pending CN101158279A (en) | 2007-11-12 | 2007-11-12 | Novel SAGD process thermal recovery well head device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101158279A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003170A (en) * | 2010-10-19 | 2011-04-06 | 中国石油大学(北京) | Calculating method for SAGD (Steam-Assisted Gravity Drainage) double-horizontal well drilling electromagnetic distance measurement guide |
-
2007
- 2007-11-12 CN CNA200710158070XA patent/CN101158279A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003170A (en) * | 2010-10-19 | 2011-04-06 | 中国石油大学(北京) | Calculating method for SAGD (Steam-Assisted Gravity Drainage) double-horizontal well drilling electromagnetic distance measurement guide |
| CN102003170B (en) * | 2010-10-19 | 2013-04-03 | 中国石油大学(北京) | Calculating method for SAGD (Steam-Assisted Gravity Drainage) double-horizontal well drilling electromagnetic distance measurement guide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080409 |