CN201110150Y - Central tube type double-tube thermal-picking cellar connection - Google Patents
Central tube type double-tube thermal-picking cellar connection Download PDFInfo
- Publication number
- CN201110150Y CN201110150Y CNU2007200153356U CN200720015335U CN201110150Y CN 201110150 Y CN201110150 Y CN 201110150Y CN U2007200153356 U CNU2007200153356 U CN U2007200153356U CN 200720015335 U CN200720015335 U CN 200720015335U CN 201110150 Y CN201110150 Y CN 201110150Y
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- CN
- China
- Prior art keywords
- upper flange
- way
- thermal
- cross joint
- recovery
- 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
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Abstract
The utility model relates to an oil well injection steam well mouth device, which particularly relates to a central tube type two-string thermal-recovery well mouth device, which comprises a restrictor, a small cross joint, an upper flange, an oil pipe cross joint, a flutter valve, a main valve and a needle-shaped air release valve, wherein the lower portion of the upper flange is connected with the cross joint, the total device adopts alloy steel material to make, the cross joint and the upper flange can simultaneously hang an oil recovery column jacket and a steam injection column jacket. The device solves a problem that the thermal-recovery well mouth can simultaneously inject steam on two positions in a well mouth, which satisfy the requirements of different thermal-recovery techniques, and when the lower column jacket is working, big load operation requirements are satisfied through upwards lifting the flange.
Description
Technical field:
The utility model relates to oil well steam injection well head device, the two-tube thermal recovery well head device of especially a kind of central tubular.
Background technology:
At present, oil well is when carrying out the steam injection oil recovery, and existing wellhead assembly structure is owing to adopt single tube post suspension arrangement, function singleness, can only a position in well during work carry out vapour and drive, very inconvenience, efficient is low, annotate the vapour effect, badly influence oil well output, can not satisfy the oil recovery needs.
The utility model content:
The utility model purpose is in order to overcome above-mentioned shortcoming, and the two-tube thermal recovery well head device of a kind of central tubular that provides, can be in same well head simultaneously in well two positions carry out vapour and drive, can improve oil well output.
The technical scheme that its technical problem that solves the utility model adopts is:
For realizing above-mentioned task, the utility model is made up of restriction choke, little four-way, upper flange, oil pipe four-way, flutter valve, main valve, aciculiform vent valve for this reason; Described upper flange bottom is connected with four-way, and whole device all adopts alloy steel products to be made.
Described four-way and upper flange can hang flow string and steam injection string simultaneously, and two orthogonal autonomous channels are arranged in four-way.
Because at four-way with can hang the tubing string of different size above the upper flange, like this in the thermal recovery operation, drive the position according to vapour and can in two tubing strings at well head center, annotate vapour simultaneously, make the steam form two steam blocks, not only improved the needs that oil well output can satisfy different thermal recovery technologies again at the different parts of oil reservoir.
Description of drawings:
Accompanying drawing is the utility model overall structure schematic diagram.
The specific embodiment:
The utility model is provided by following examples
Illustrated below in conjunction with accompanying drawing
Among the figure: by 1. restriction chokes, 2. little four-way, 3. upper flange, 4. four-way, 5. oil pipe four-way, 6. flutter valve, 7. main valve, 8. aciculiform vent valve composition.
Described upper flange 3 bottoms are connected with four-way 4, can hang flow string and steam injection string (figure is mark not) at four-way with above the upper flange, described four-way 4 and upper flange 3 can hang flow string and steam injection string, and two orthogonal independently passages are arranged in the described four-way.
During assembling, at first main valve 7, flutter valve 6, aciculiform vent valve 8 and other component-assembled are got up, then again casing flange and tubing head four-way 5 are used bolt tightening, put into steel ring afterwards, and above four-way 4 steadily is seated in reliably, fastening in addition, check peripheral slit uniformity coefficient then, again upper flange 3 is fastened on the four-way, can finishes erection work above at last the little four-way 2 of each valve and restriction choke 1 being fixed by bolts to.
In addition, this installs used airtight and watertight padding, joint ring is that corrosion-resistant polythene material that can be grease proofing is made, whole wellhead assembly is made with stainless steel material, therefore have the high-strength corrosion-resisting characteristics, simultaneously again can be when playing the lower tubular column operation, by on put on flange 3 and can satisfy big load job requirements, convenient especially.
Claims (2)
1, the two-tube thermal recovery well head device of a kind of central tubular is made up of restriction choke (1), little four-way (2), upper flange (3), tubing head four-way (5), flutter valve (6), main valve (7), aciculiform vent valve (8); It is characterized in that: described upper flange (3) bottom is linked with four-way (4), and whole device all adopts alloy steel products to be made.
2, the two-tube thermal recovery well head device of a kind of central tubular according to claim 1 is characterized in that: described four-way (4) and upper flange (3) can hang flow string and steam injection string simultaneously, and two vertical passages are independently mutually arranged in the described four-way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200153356U CN201110150Y (en) | 2007-10-18 | 2007-10-18 | Central tube type double-tube thermal-picking cellar connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200153356U CN201110150Y (en) | 2007-10-18 | 2007-10-18 | Central tube type double-tube thermal-picking cellar connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110150Y true CN201110150Y (en) | 2008-09-03 |
Family
ID=39894680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200153356U Expired - Fee Related CN201110150Y (en) | 2007-10-18 | 2007-10-18 | Central tube type double-tube thermal-picking cellar connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110150Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242614A (en) * | 2011-07-19 | 2011-11-16 | 中国石油天然股份有限公司 | Coaxial double-layer gas injection well mouth device |
| CN104632118A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气股份有限公司 | Erosion-prevention drilling and completion integrated wellhead device and mounting method |
-
2007
- 2007-10-18 CN CNU2007200153356U patent/CN201110150Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242614A (en) * | 2011-07-19 | 2011-11-16 | 中国石油天然股份有限公司 | Coaxial double-layer gas injection well mouth device |
| CN104632118A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气股份有限公司 | Erosion-prevention drilling and completion integrated wellhead device and mounting 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 |