CN201141293Y - Simple exploitation and injection dual-purpose shaft mouth - Google Patents
Simple exploitation and injection dual-purpose shaft mouth Download PDFInfo
- Publication number
- CN201141293Y CN201141293Y CNU2007201596455U CN200720159645U CN201141293Y CN 201141293 Y CN201141293 Y CN 201141293Y CN U2007201596455 U CNU2007201596455 U CN U2007201596455U CN 200720159645 U CN200720159645 U CN 200720159645U CN 201141293 Y CN201141293 Y CN 201141293Y
- Authority
- CN
- China
- Prior art keywords
- lower flange
- flange
- screw thread
- upper flange
- sleeve
- 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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- Valve Housings (AREA)
Abstract
Disclosed is a simple dual-purpose wellhead for both extraction and injection, comprising an upper flange, a lower flange, a single-head bolt which connects the upper flange and the lower flange, and a steel ring arranged between the upper flange and the lower flange. The upper flange takes the shape of a kettle, with the mouth shaped to be a catch hoop head used to connect the valves of a sleeve; the inner pathway of the upper flange takes the shape of a staircase, with the upper part smaller than the middle part and the middle part smaller than the lower part; internal conical threads connected with a three-way vitta and a vitta hanger with internal conical threads are respectively arranged on the upper part and the middle part of the upper flange; a sleeve cavity is arranged at the lower part of the upper flange. The lower flange takes the shape of I, with the upper part provided with internal conical threads and the lower end welded with a circular steel plate; a sleeve hanger is arranged between the circular steel plate and the internal conical threads at the upper part of the lower flange, and the sleeve hanger and the internal conical threads at the upper part of the lower flange are connected through a casing nipple; internal conical threads below the sleeve hanger are connected with the sleeve; a layer of hard alloy is sprayed at the external circumference of the lower flange; the upper flange and the lower flange are connected through bolts. The simple dual-purpose wellhead is simple in structure and is easy and convenient to install and dismantle; the dual-purpose wellhead is convenient for operation and is suitable for both oil extraction and steam injection without changing the wellhead, thus reducing operation processes.
Description
One, technical field
The utility model relates to simple and easy the adopting that recover the oil in a kind of oil field and notes vapour is used and annotates dual-purpose well head.
Two, background technology
Boll-weevil hanger on the production tree of using on the oil field is provided in a side of a four-way junction of casing the inside at present, for gas-liquid in the oil pipe and the gas-liquid in the sleeve pipe are separated, and on production tree, demonstrate oil pressure and casing pressure, the fixed position of boll-weevil hanger and the design of sealing position are complicated, construction and installation are trouble, and need change during steam injection and annotate the vapour well head, and the clip head of in addition pacifying sleeve valve is at following of four-way junction of casing upper flange, when to the oil well job execution, influence the operating worker operation; Sleeve pipe cooperates with the lower flange of four-way junction of casing with the casing flange of directly screwing on sleeve pipe being connected of four-way junction of casing, uses the stud fixed by nut.The sleeve pipe part of basseting.When oil well stopped well, common people were just sawed-off in sleeve position with hacksaw.Whole production tree stolen sell iron and steel, directly influence the normal operation construction of oil well, bring immeasurable economic loss to the oil field.
Three, summary of the invention
The purpose of this utility model is the problem at above-mentioned existence, has designed a kind of simple and easy adopting and has annotated dual-purpose well head.
The technical solution of the utility model realizes in the following manner:
The utility model is made up of the single ended bolt of lower flange in upper flange, lower flange, the connection, the steel ring that is installed between the lower flange, it is characterized in that upper flange is kettle shape, Hu Zui is made as the clip head of splicing sleeve valve, its upper flange internal diameter is made as stairstepping, top is less than the middle part, the middle part is less than the bottom, and top is provided with the endosiphuncular tube screw thread that is connected with the oil pipe threeway separately and the endosiphuncular tube screw thread that is connected with oil pipe claims boll-weevil hanger with the middle part, and the bottom is made as casing cavity; It is I-shaped that lower flange is, lower flange top is provided with the inner conical gas thread, the lower flange lower end is welded with doughnut-shaped steel plate, between doughnut-shaped steel plate and lower flange top endosiphuncular tube screw thread, be provided with up and down casing hanger with the endosiphuncular tube screw thread, be connected with casing nipple between casing hanger and the lower flange top endosiphuncular tube screw thread, the endosiphuncular tube screw thread is connected with sleeve pipe under the casing hanger; At periphery spray one deck carbide alloy of lower flange, last lower flange is connected to single ended bolt and connects, and lower flange is provided with the internal thread of single ended bolt, and last lower flange is cast with cast steel.
The utility model installing/dismounting simple in structure, easy, convenient working construction, oil recovery or steam injection all is suitable for, need not change well head, reduced construction sequence.Lower flange gets up casing protection, and common people are not easy sawed-off, has guarded against some people's pilferage behavior preferably, has protected the oil field property.
Four, description of drawings
Accompanying drawing is the utility model structural representation.
Five, the specific embodiment
For further disclosing the technical solution of the utility model, elaborate by embodiment below in conjunction with Figure of description:
The utility model is made up of the single ended bolt 2 of lower flange in upper flange 1, lower flange 4, the connection, the steel ring 3 that is installed between the lower flange, it is characterized in that upper flange is kettle shape, Hu Zui is made as the clip head of splicing sleeve valve, its upper flange internal diameter is made as stairstepping, top is less than the middle part, the middle part is less than the bottom, and top is provided with the endosiphuncular tube screw thread that is connected with the oil pipe threeway separately and the endosiphuncular tube screw thread that is connected with oil pipe claims boll-weevil hanger with the middle part, and the bottom is made as casing cavity; Lower flange 4 is I-shaped, lower flange top is provided with the inner conical gas thread, the lower flange lower end is welded with doughnut-shaped steel plate 7, periphery spraying one deck carbide alloy 9, between doughnut-shaped steel plate and lower flange top endosiphuncular tube screw thread, be provided with up and down casing hanger 6 with the endosiphuncular tube screw thread, be connected with casing nipple 5 between casing hanger 6 and the lower flange 4 top endosiphuncular tube screw threads, 6 times endosiphuncular tube screw threads of casing hanger are connected with sleeve pipe 8; At periphery spray one deck carbide alloy of lower flange, last lower flange is connected to single ended bolt and connects, and lower flange is provided with the internal thread of single ended bolt, and last lower flange is cast with cast steel.
The concrete installation process of the utility model is as follows:
At first casing hanger 6 is connected with sleeve pipe 8, be connected with casing nipple 5 again, casing nipple 5 is threaded with lower flange 4 endosiphuncular tubes again, doughnut-shaped steel plate 7 is two of symmetry, on its sleeve pipe to the lower end that is buckled in lower flange, the make-up of burn-oning seam, again that itself and lower flange lower end is welded together, put steel ring 3 in the lower flange upper surface, the pipe elevator of slinging.The suspension oil pipe endosiphuncular tube screw thread of upper flange 1 is connected with oil pipe, again 1 pair of upper flange is buckled on the lower flange 4, the single ended bolt 2 of screwing on, again the oil pipe threeway is connected with the upper flange upper end, sleeve valve will be installed again on the upper flange, preventer is installed in upper end in the oil pipe threeway, installs tubing valve at the other end, promptly constitutes a complete production tree.Whole well head is the steel ring sealing between last lower flange, and all the other all are that taper pipe thread connects, and the position of not being afraid of high temperature need not be changed during steam injection and annotate the vapour well head, has reduced construction sequence, strives production time, rate when having improved the production of recovering the oil or annotating vapour.
Claims (1)
1, a kind of simple and easy adopting annotated dual-purpose well head, formed by the single ended bolt of lower flange in upper flange, lower flange, the connection, the steel ring that is installed between the lower flange, it is characterized in that upper flange is kettle shape, Hu Zui is made as the clip head of splicing sleeve valve, its upper flange internal diameter is made as stairstepping, and top is less than the middle part, and the middle part is less than the bottom, top is provided with the endosiphuncular tube screw thread that is connected with the oil pipe threeway separately and the endosiphuncular tube screw thread that is connected with oil pipe claims boll-weevil hanger with the middle part, and the bottom is made as casing cavity; It is I-shaped that lower flange is, lower flange top is provided with the inner conical gas thread, the lower flange lower end is welded with doughnut-shaped steel plate, between doughnut-shaped steel plate and lower flange top endosiphuncular tube screw thread, be provided with up and down casing hanger with the endosiphuncular tube screw thread, be connected with casing nipple between casing hanger and the lower flange top endosiphuncular tube screw thread, the endosiphuncular tube screw thread is connected with sleeve pipe under the casing hanger; At periphery spray one deck carbide alloy of lower flange, last lower flange is connected to single ended bolt and connects, and lower flange is provided with the internal thread of single ended bolt, and last lower flange is cast with cast steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201596455U CN201141293Y (en) | 2007-12-20 | 2007-12-20 | Simple exploitation and injection dual-purpose shaft mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201596455U CN201141293Y (en) | 2007-12-20 | 2007-12-20 | Simple exploitation and injection dual-purpose shaft mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201141293Y true CN201141293Y (en) | 2008-10-29 |
Family
ID=40069006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201596455U Expired - Fee Related CN201141293Y (en) | 2007-12-20 | 2007-12-20 | Simple exploitation and injection dual-purpose shaft mouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201141293Y (en) |
-
2007
- 2007-12-20 CN CNU2007201596455U patent/CN201141293Y/en not_active Expired - Fee Related
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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 |