CN209908449U - Novel binary channels thermal recovery well head device - Google Patents
Novel binary channels thermal recovery well head device Download PDFInfo
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- CN209908449U CN209908449U CN201920566550.8U CN201920566550U CN209908449U CN 209908449 U CN209908449 U CN 209908449U CN 201920566550 U CN201920566550 U CN 201920566550U CN 209908449 U CN209908449 U CN 209908449U
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Abstract
The utility model discloses a novel binary channels thermal recovery well head device. The dual-channel thermal recovery wellhead device comprises a Christmas tree; the Christmas tree comprises a heat injection channel and a production channel, wherein the heat injection channel and the production channel are both connected with an inner flange, and the inner flange is connected with an oil pipe four-way joint; a heat injection gate valve is arranged on the heat injection channel, and a production gate valve is arranged on the production channel; the wellhead device is communicated with an oil pipe cross, and a nitrogen injection gate valve is arranged on one wing of the oil pipe cross; the oil pipe cross is communicated with the sleeve pipe cross, and sleeve pipe gate valves are arranged on two wings of the sleeve pipe tee. The utility model provides a novel binary channels thermal recovery well head device, heat injection and oil recovery adopt binary channels structural design, realize heat injection and production passageway complete separation, on two kinds of passageway nipple joints passed through screw thread (flange) and are connected to the production tree, easily change the dismantlement, can improve the field operation ageing, reduce the operating cost.
Description
Technical Field
The utility model relates to a novel binary channels thermal recovery well head device belongs to oil field development production technical field.
Background
The viscosity of the thickened oil is high at normal temperature, and the exploitation difficulty is high by adopting a conventional method. The heavy oil fields at home and abroad are mostly exploited by thermal oil recovery modes such as steam huff and puff or steam flooding, and therefore, high-temperature steam with the temperature of 300-350 ℃ needs to be injected in the process of exploiting the heavy oil so as to reduce the viscosity of the heavy oil and improve the fluidity of oil bodies. The steam injection exploitation process of the heavy oil well is generally divided into the steps of steam injection, well stewing, steam exhaust, oil extraction and the like, and when the oil well is subjected to heat injection oil extraction, the existing wellhead device mostly adopts a single-tubular-column structure and is single in function. When the heat-injection well is in work, two operations of heat injection and oil extraction can be carried out at one position in a well hole, the efficiency is low, and the efficient development of an oil field is seriously influenced. In addition, after the conventional thermal production well head is subjected to hot steam huff and puff for multiple rounds, the problems of high-temperature adhesion, corrosion and puncture or sealing leakage and the like of the well head are easy to occur, and the problems also cause great influence on the production operation of the thermal production well.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a binary channels thermal recovery wellhead assembly can be applied to during the viscous crude thermal recovery, can simplify the operation procedure, improves the viscous crude exploitation effect.
The utility model provides a dual-channel thermal recovery wellhead device, which comprises a Christmas tree;
the Christmas tree comprises a heat injection channel and a production channel, wherein the heat injection channel and the production channel are both connected with an inner flange, and the inner flange is connected with an oil pipe four-way joint; a heat injection gate valve is arranged on the heat injection channel, and a production gate valve is arranged on the production channel;
a nitrogen injection gate valve is arranged on one wing of the oil pipe four-way joint, and the wing is used for being connected with a nitrogen injection airflow process and is used for injecting nitrogen into the oil sleeve ring in an empty mode, so that the heat injection efficiency and the balanced formation pressure are improved;
the oil pipe cross is communicated with the sleeve cross, and sleeve gate valves are arranged on two wings of the sleeve cross and can be used in well repair operation at the later stage.
The double-channel thermal recovery wellhead device is characterized in that the heat injection channel and the production channel are connected with the inner flange in a threaded mode, so that the double-channel thermal recovery wellhead device is easy to replace and disassemble, the field operation timeliness can be improved, and the operation cost is reduced.
The heat injection channel and the oil extraction channel are internally provided with coatings, so that the performances of erosion resistance, high temperature and high pressure resistance, creep resistance and the like of the pipeline are improved.
In the dual-channel thermal recovery wellhead device, the production channel is provided with an adjustable throttle valve, and the oil well yield can be adjusted in the production process.
In the dual-channel thermal recovery wellhead device, the Christmas tree further comprises a paraffin removal gate valve and a pneumatic safety valve, so that chemical agents can be injected and remote emergency closing can be realized.
The utility model provides a novel binary channels thermal recovery well head device, heat injection and oil recovery adopt binary channels structural design, realize heat injection and production passageway complete separation, on two kinds of passageway nipple joints passed through screw thread (flange) and are connected to the production tree, easily change the dismantlement, can improve the field operation ageing, reduce the operating cost. In addition, the coating is arranged in the heat injection and oil extraction channel, so that the performances of erosion resistance, high temperature and high pressure resistance, creep resistance and the like of the pipeline are improved.
Drawings
Fig. 1 is the structure schematic diagram of the dual-channel thermal recovery wellhead device of the utility model.
Fig. 2 is an internal structure (a structure view of the inside of a double-passage column) at a position a in fig. 1.
The respective symbols in the figure are as follows:
1. a heat injection gate valve; 2. oil production tree caps; 3. a pressure gauge; 4. a paraffin removal gate valve; 5. producing a gate valve; 6. an adjustable throttle valve; 7. a pneumatic safety valve; 8. a main gate valve; 9. a flange; 10. the oil pipe is four-way; 11. a nitrogen injection gate valve; 12. a sleeve four-way joint; 13. a sleeve gate valve; 14. a heat injection channel; 15. a production channel; 16. an inner flange.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following examples are given in conjunction with the accompanying drawings.
As shown in fig. 1, for the utility model provides a novel binary channels thermal recovery well head device's overall structure, wherein mainly include parts such as heat injection gate valve 1, production tree cap 2, manometer 3, paraffin removal gate valve 4, production gate valve 5, adjustable choke valve 6, pneumatic relief valve 7, main gate valve 8, flange 9, oil pipe cross 10, notes nitrogen gate valve 11, sleeve pipe cross 12, sleeve pipe gate valve 13, heat injection passageway 14, production passageway 15, interior flange 16.
Specifically, the novel dual-channel thermal recovery wellhead device mainly comprises a casing head, a tubing head and a Christmas tree. Wherein, the cap 2 of the oil production tree and the pressure gauge 3 are connected to the top of the oil production tree, one wing of the heat injection gate valve 1 of the oil production tree is connected with the heat injection flow, one wing of the production gate valve 5 is connected with the oil production flow, and the rear part of the production gate valve 5 is connected with the adjustable throttle valve 6. As shown in fig. 2, which is a structure diagram of the interior of a dual-channel tubular column, two pipelines, i.e., a heat injection channel 14 and a production channel 15, are respectively connected to channels on both sides of a christmas tree, and the interior of the christmas tree is connected to a four-way joint of an oil pipe through an inner flange 16. The paraffin removal gate valve 4 and the pneumatic safety valve 7 are connected to the other side of the Christmas tree, and the lower end of the Christmas tree is connected with the main gate valve 8. The Christmas tree is connected with an oil pipe four-way joint 10 through a flange 9, and one wing of a nitrogen injection gate valve 11 of an oil pipe head is connected with a nitrogen injection flow path. The lower part of the oil pipe four-way joint 10 is connected with a sleeve four-way joint 12, and two wings of the sleeve four-way joint 12 are matched with corresponding sleeve gate valves 13.
Use the utility model discloses binary channels thermal recovery wellhead assembly's process as follows:
and during steam injection, opening the heat injection gate valve 1 on the heat injection channel 14 of the Christmas tree, closing other manual valves of the Christmas tree, performing heat injection operation, closing the valve on the heat injection channel 14 for stewing after heat injection is finished, and opening the valves (the production gate valve 5 and the adjustable throttle valve 6) on the production channel 15 for blowout. In the process of heat injection, the oil pipe head nitrogen injection gate valve 11 is opened to empty nitrogen gas injection to the oil sleeve ring, so that the heat injection efficiency and the balanced formation pressure are improved.
The utility model discloses binary channels thermal recovery well head device heat injection and oil recovery adopt binary channels structural design, realize heat injection and production passageway complete separation, and two kinds of passageway nipple joints are easily changed and are dismantled on through threaded connection to the production tree, can improve the field operation ageing, reduce the operating cost.
Claims (4)
1. A kind of double-channel thermal recovery well head device, characterized by: the dual-channel thermal recovery wellhead device comprises a Christmas tree;
the Christmas tree comprises a heat injection channel and a production channel, wherein the heat injection channel and the production channel are both connected with an inner flange, and the inner flange is connected with an oil pipe four-way joint; a heat injection gate valve is arranged on the heat injection channel, and a production gate valve is arranged on the production channel;
a nitrogen injection gate valve is arranged on one wing of the oil pipe four-way joint;
the oil pipe cross is communicated with the sleeve cross, and sleeve gate valves are arranged on two wings of the sleeve cross.
2. The dual path thermal recovery wellhead assembly of claim 1 wherein: the heat injection channel and the production channel are connected with the inner flange in a threaded connection mode.
3. The dual path thermal recovery wellhead as claimed in claim 1 or claim 2 in which: an adjustable throttle valve is arranged on the production channel.
4. The dual path thermal recovery wellhead as claimed in claim 1 or claim 2 in which: the Christmas tree also comprises a paraffin removal gate valve and a pneumatic safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920566550.8U CN209908449U (en) | 2019-04-24 | 2019-04-24 | Novel binary channels thermal recovery well head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920566550.8U CN209908449U (en) | 2019-04-24 | 2019-04-24 | Novel binary channels thermal recovery well head device |
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| Publication Number | Publication Date |
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| CN209908449U true CN209908449U (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920566550.8U Active CN209908449U (en) | 2019-04-24 | 2019-04-24 | Novel binary channels thermal recovery well head device |
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| CN (1) | CN209908449U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266316A (en) * | 2021-07-02 | 2021-08-17 | 西安航空职业技术学院 | Gas production device and method for wellhead |
| CN115163001A (en) * | 2022-08-01 | 2022-10-11 | 吕远 | Injection-production integrated device and method thereof |
| CN115163018A (en) * | 2022-08-15 | 2022-10-11 | 中国海洋石油集团有限公司 | Christmas tree arrangement method for offshore large-scale heavy oil thermal recovery |
-
2019
- 2019-04-24 CN CN201920566550.8U patent/CN209908449U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266316A (en) * | 2021-07-02 | 2021-08-17 | 西安航空职业技术学院 | Gas production device and method for wellhead |
| CN115163001A (en) * | 2022-08-01 | 2022-10-11 | 吕远 | Injection-production integrated device and method thereof |
| CN115163018A (en) * | 2022-08-15 | 2022-10-11 | 中国海洋石油集团有限公司 | Christmas tree arrangement method for offshore large-scale heavy oil thermal recovery |
| CN115163018B (en) * | 2022-08-15 | 2023-09-08 | 中国海洋石油集团有限公司 | Christmas tree arrangement method for offshore large-scale thickened oil thermal recovery |
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