CN2536781Y - Non-disassemble wellhead for oil production by gas injection - Google Patents
Non-disassemble wellhead for oil production by gas injection Download PDFInfo
- Publication number
- CN2536781Y CN2536781Y CN 02211215 CN02211215U CN2536781Y CN 2536781 Y CN2536781 Y CN 2536781Y CN 02211215 CN02211215 CN 02211215 CN 02211215 U CN02211215 U CN 02211215U CN 2536781 Y CN2536781 Y CN 2536781Y
- Authority
- CN
- China
- Prior art keywords
- wellhead
- oil production
- well head
- main body
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 238000002347 injection Methods 0.000 title description 3
- 239000007924 injection Substances 0.000 title description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 23
- 239000000463 material Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000000295 fuel oil Substances 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model relates to a non-disassembly wellhead for steam injection and oil production, which consists of a wellhead flange 1, a sealing steel ring 2, a high intensity bolt 3, a high intensity nut 4, a mandrel hanger 5, a catch bolt 6, a wellhead main body 7, an oil pipe valve 8 and a casing valve 9. The utility model integrates the steam injection wellhead and the oil production wellhead in prior art into one body. The utility model has the advantages that large amount of man power and material resources are saved, the operation safety is improved and the operation cost is reduced, as the structure employed by the utility model that the wellhead flange is connected with the wellhead main body by the high intensity bolt and the sealing steel ring is sandwiched between the wellhead flange and the wellhead main body, takes the place of the structure in prior art that two sets of wellheads are used for heavy oil production- one oil production wellhead is used for steam injection while the other oil production wellhead is used for oil production, and the heavy oil production is finished after repeating assembling and disassembling for four times.
Description
Technical field
The utility model relates to a kind of oil-field thick-oil (or thin oil) recovery process that is used for and annotates vapour and recover the oil and do not dismantle well head.
Background technology
All need dismounting when the present wellhead assembly that adopts in oil field gas injection, the oil recovery process, each operation, change, and the gate life-span is short.Especially the heavy crude heat extraction well operations is frequent, not only needs to dismantle well head, and needs notes vapour well head and production wellhead to change back and forth, and the oil supply well operations has increased bigger workload.
Purpose:
The purpose of this utility model is to provide a kind of notes vapour to recover the oil and does not dismantle well head, and the novel well head that can annotate vapour, can recover the oil again not only reduces work operations amount and working strength of workers, and has improved operating efficiency.
Technology contents:
The purpose of this utility model is to realize like this, it is made up of wellhead flange (1), ring gasket (2), high-strength bolt (3), high strength nut (4), tubing hanger (5), dogbolt (6), well head main body (7), tubing valve (8), sleeve valve (9), through hole is arranged in the middle of the wellhead flange (1), join by high-strength bolt (3), high strength nut (4) with well head main body (7), the centre accompanies ring gasket (2), be connected to tubing hanger (5) in the well head main body (7), be connected to dogbolt (6), tubing valve (8), sleeve valve (9) on it.
When operation, only need move wellhead flange (1), and not need to move with main body integral body.During steam injection, steam injects in the well from tubing valve (8), and during oil recovery, crude oil is from tubing valve (8) extraction.
The utility model is owing to adopted wellhead flange to be connected by high-strength bolt with the well head main body and the middle structure that accompanies ring gasket, replaced thickened oil recovery and overlapped well heads with two, change the gas injection well head when being steam injection, change production wellhead during oil recovery, need just can finish the activities of thickened oil recovery through four times repeated disassembled and assembled, therefore save lot of manpower and material resources, and improved operational security, reduced operating cost.
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in the figure, the utility model is made up of wellhead flange 1, ring gasket 2, high-strength bolt 3, high strength nut 4, tubing hanger 5, dogbolt 6, well head main body 7, tubing valve 8, sleeve valve 9, steam injection well head, production wellhead are designed to one, all adopt exotic material, it separates steam injection passage, oil recovery passage and the ring-like space of oil jacket respectively by tubing hanger, realizes function separately.The hermetically-sealed construction of tubing valve is the conical surface, linearity, hard sealing, adopts stainless steel material, and exotic material is adopted at the sealing position, guarantees that with this valve works reliably and with long-term.
The alternative conventional well head of oil field use both at home and abroad at present of this device is widely used in the oil exploitation.
Claims (3)
1, a kind of notes are adopted and are not dismantled well head, form by wellhead flange (1), ring gasket (2), high-strength bolt (3), high strength nut (4), tubing hanger (5), dogbolt (6), well head main body (7), tubing valve (8), sleeve valve (9), it is characterized in that: through hole is arranged in the middle of the wellhead flange (1), join by high-strength bolt (3), high strength nut (4) with well head main body (7), the centre accompanies ring gasket (2), be connected to tubing hanger (5) in the well head main body (7), be connected to dogbolt (6), tubing valve (8), sleeve valve (9) on it.
2, notes according to claim 1 are adopted and do not dismantled well head, it is characterized in that: the hermetically-sealed construction of tubing valve (8), sleeve valve (9) is the conical surface, linearity, hard sealing.
3, adopt according to the described notes of claim 1 and do not dismantle well head, it is characterized in that tubing hanger (5) separates the ring-like space of steam injection, oil recovery passage, sleeve pipe and oil pipe respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211215 CN2536781Y (en) | 2002-04-12 | 2002-04-12 | Non-disassemble wellhead for oil production by gas injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211215 CN2536781Y (en) | 2002-04-12 | 2002-04-12 | Non-disassemble wellhead for oil production by gas injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2536781Y true CN2536781Y (en) | 2003-02-19 |
Family
ID=33691178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02211215 Expired - Fee Related CN2536781Y (en) | 2002-04-12 | 2002-04-12 | Non-disassemble wellhead for oil production by gas injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2536781Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453815A (en) * | 2014-11-19 | 2015-03-25 | 中国海洋石油总公司 | Thermal recovery antipollution pipe column |
| CN112523722A (en) * | 2020-11-27 | 2021-03-19 | 徐小林 | Wedge-shaped throttle valve structure capable of being mechanically sealed for gas injection and oil extraction well head of oil field |
-
2002
- 2002-04-12 CN CN 02211215 patent/CN2536781Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453815A (en) * | 2014-11-19 | 2015-03-25 | 中国海洋石油总公司 | Thermal recovery antipollution pipe column |
| CN112523722A (en) * | 2020-11-27 | 2021-03-19 | 徐小林 | Wedge-shaped throttle valve structure capable of being mechanically sealed for gas injection and oil extraction well head of oil field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WUYESI COMPANY, LIAOHEYOUTIANZHENXING COMPANY, PAN Free format text: FORMER NAME OR ADDRESS: 124010 LIAONING PROVINCE PANJIN CITY XINGLONGTAI DISTRICT |
|
| CP03 | Change of name, title or address |
Patentee address after: 124010 Liaoning Panjin Liaohe Oilfield revitalization company property four companies Patentee address before: 124010 Xinglongtai District, Liaoning, Panjin |
|
| 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 |