CN203008838U - Dual-tubing and dual-suspension wellhead - Google Patents
Dual-tubing and dual-suspension wellhead Download PDFInfo
- Publication number
- CN203008838U CN203008838U CN 201220600144 CN201220600144U CN203008838U CN 203008838 U CN203008838 U CN 203008838U CN 201220600144 CN201220600144 CN 201220600144 CN 201220600144 U CN201220600144 U CN 201220600144U CN 203008838 U CN203008838 U CN 203008838U
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- tubing
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- test
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Abstract
The utility model relates to the technical field of production and test of horizontal wells, in particular to a dual-tubing and dual-suspension wellhead which comprises a dual tubing switching flange; a production hole and a test hole are formed on the dual tubing switching flange; the lower end of the production hole of the dual tubing switching flange is connected with an underground production tubing string; the upper end of the production hole is connected with a 2 inch thickening tubing; the upper end of the 2 inch thickening tubing is connected with a small cross; a polished rod is lowered in the 2 inch thickening tubing through the small cross; the upper end of a 2 inch integral joint tubing is in threaded connection with a dual-tubing suspensor; the dual-tubing suspensor is placed in the test hole of the dual tubing switching flange; and a gland is tightened up above the dual-tubing suspensor. The wellhead achieves the hanging and the sealing of a production tubing string and a test tubing string, isolates a production passage from a test passage, and meanwhile, achieves the normal production and test of an oil well, and can suspense the 2 inch integral joint tubing.
Description
Technical field:
The utility model relates to a kind of horizontal well production test technical field, particularly a kind of two-tube two well heads that hang.
Background technology:
Horizontal well worldwide is widely applied day by day as a ripe applicable technology of oil-gas field development, and the production performance evaluation measuring technology of horizontal well is belonged to blank at home.And one of three large difficult points of horizontal well production test is exactly two-tube two shaft mouth test that hangs, and the oil field is in recovery process, and the ground wellhead assembly is a kind of device that recovers the oil and test, and in addition well head also plays the effect of blowout prevention.Present two-tube well head can hang common oil well test string, but complex structure, poor operability, its hang be the dual string independent suspension on same twoport boll-weevil hanger, the upper flange four-way can not be realized the installation of transferring of new tubing string.In addition, also do not have 2 inches can realize that without joint hoop boll-weevil hanger 2 inches well heads without joint hoop oil pipe hang at present.
The utility model content:
The technical problems to be solved in the utility model is to provide a kind of two-tube two well heads that hang, this device has been realized suspension, sealing flow string and test string, passage and test channel are produced in isolation, realize simultaneously normal production and the test of oil well, and can hang 2 inches without joint hoop oil pipe.Overcome existing twoport boll-weevil hanger complex structure, poor operability, the upper flange four-way can not be realized the installation of transferring of new tubing string, can not hang 2 inches without the deficiency of joint hoop oil pipe.
Technical solution adopted in the utility model is: a kind of two-tube two well heads that hang comprise two-tube crossover flange; Have production hole and instrument connection on two-tube crossover flange, lower end, the production hole connecting downhole flow string of two-tube crossover flange, upper end, production hole connects 2 inches heavy wall tubings, 2 inches little four-ways of heavy wall tubing upper end connection, polished rod is lowered in 2 inches heavy wall tubings by little four-way, 2 inches integral joint tubing upper end screwed connection dual tubing hangers, dual tubing hanger seat are tightened gland above dual tubing hanger in the instrument connection of two-tube crossover flange.
The beneficial effects of the utility model are: the utility model is owing to having adopted two-tube crossover flange, thereby has a function of suspension, sealing flow string and test string, passage and test channel are produced in isolation, realize simultaneously normal production and the test of oil well, and can hang 2 inches without joint hoop oil pipe.
Description of drawings:
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Accompanying drawing is structural representation of the present utility model.
The specific embodiment:
As shown in drawings, a kind of two-tube two well heads that hang comprise two-tube crossover flange 7; Have production hole and instrument connection on two-tube crossover flange 7, lower end, the production hole connecting downhole flow string of two-tube crossover flange 7, upper end, production hole connects 2 inches heavy wall tubings 4,2 inches heavy wall tubing 4 little four-ways 3 of upper ends connection, polished rod 1 is lowered in 2 inches heavy wall tubings 4 by little four-way 3,2 inches integral joint tubing 2 upper end screwed connection dual tubing hangers 6,6 of dual tubing hangers are in the instrument connection of two-tube crossover flange 7, and gland 5 is tightened in dual tubing hanger 6 tops.Two-tube crossover flange 7 adopts the steel ring sealing with the tubing head four-way, and tubing head four-way and casing flange adopt the steel ring sealing.Start the reciprocal lifting polished rod 1 of oil pumper and realize oil well production, utilize simultaneously the Operation Tubing Aggregate working rig that the tester that 1.25 inches coiled tubings carry is carried out the horizontal well production test from 2 inches interior G.I.Hs of integral joint tubing 2.
Be understandable that, above about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (1)
1. two-tube two well heads that hang, comprise two-tube crossover flange (7), it is characterized in that: two-tube crossover flange has production hole and instrument connection on (7), lower end, the production hole connecting downhole flow string of two-tube crossover flange (7), upper end, production hole connects 2 inches heavy wall tubings (4), 2 inches heavy wall tubings (4) upper end connects little four-way (3), polished rod (1) is lowered in 2 inches heavy wall tubings (4) by little four-way (3), 2 inches integral joint tubings (2) upper end screwed connection dual tubing hangers (6), dual tubing hanger (6) seat is in the instrument connection of two-tube crossover flange (7), gland (5) is tightened in dual tubing hanger (6) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600144 CN203008838U (en) | 2012-11-14 | 2012-11-14 | Dual-tubing and dual-suspension wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600144 CN203008838U (en) | 2012-11-14 | 2012-11-14 | Dual-tubing and dual-suspension wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203008838U true CN203008838U (en) | 2013-06-19 |
Family
ID=48600445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220600144 Expired - Fee Related CN203008838U (en) | 2012-11-14 | 2012-11-14 | Dual-tubing and dual-suspension wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203008838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143653A (en) * | 2022-06-29 | 2022-10-04 | 西南石油大学 | Parallel pipe circulating geothermal heat taking structure and process scheme |
-
2012
- 2012-11-14 CN CN 201220600144 patent/CN203008838U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143653A (en) * | 2022-06-29 | 2022-10-04 | 西南石油大学 | Parallel pipe circulating geothermal heat taking structure and process scheme |
| CN115143653B (en) * | 2022-06-29 | 2024-04-26 | 西南石油大学 | Parallel pipe circulation geothermal heat extraction structure and process scheme |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20141114 |
|
| EXPY | Termination of patent right or utility model |