CN205225170U - Packer outside expansion pipe is used in viscous crude segmentation well completion - Google Patents
Packer outside expansion pipe is used in viscous crude segmentation well completion Download PDFInfo
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- CN205225170U CN205225170U CN201520926910.2U CN201520926910U CN205225170U CN 205225170 U CN205225170 U CN 205225170U CN 201520926910 U CN201520926910 U CN 201520926910U CN 205225170 U CN205225170 U CN 205225170U
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Abstract
The utility model relates to a well completion technical field, in particular to packer outside expansion pipe is used in viscous crude segmentation well completion are bored in the viscous crude thermal recovery. The device's top connection, center tube and lower clutch are connected in order, and center tube upper portion, lower part are overlapped respectively and be equipped with one -level cylinder body and second grade cylinder body, all are equipped with on one -level cylinder body and the second grade cylinder body outer wall and set upright or straight the rubber ring, install the one -level in the one -level cylinder body and from the piston that expands, install the second grade in the second grade cylinder body and all inject the thermal energy agent from the piston that expands, one -level into from expand piston and second grade on the inner surface of the piston that expands. The utility model discloses a can be safely sit smoothly and seal, can effectively seal the different payzones of horizontal well or straight well and separate, use safe and reliable, realize the segmentation well completion of viscous crude thermal recovery, effectively solve the horizontal section and employ uneven problem, promote the viscous crude thermal recovery by a wide margin and annotate vapour efficiency, improve the ultimate recovery of viscous crude thermal recovery.
Description
Technical field:
The utility model relates to heavy crude heat extraction and bores completion technique field, particularly a kind of viscous crude sectional well completion self-expanding external packer of pipe.
Background technology:
Along with expanding economy, human society is increasing to energy demand, and especially more and more large to the demand of conventional gas and oil resource, viscous crude is as the making & breaking in petroleum resources, just progressively cause the attention of oil play, viscous crude becomes a kind of following very important energy supply resource.The difficult point of thickened oil recovery is its viscosity, common heavy oil viscosity is generally greater than 50mPas, current thickened oil recovery many employings steam soak and steam flooding are steam flooding or steam soak is all utilize pipeline to inject steam to stratum, and the efficiency of straight well gas injection is far below horizontal well.In present each elephant horizontal well, most employing is screen casing (slot, wrapping wire), general gas injection is adopted in gas injection process, because horizontal segment is generally long at 300 ~ 500m, oil reservoir span is larger, reservoir heterogeneity along pit shaft length is stronger, simultaneously in oily district, other injection-production wells inner inject and the impact of recovery percent of reserves, formation pressure system changes, to make between well that " vapour is altered " is general, horizontal segment oil reservoir employs inequality, advancing by leaps and bounds in steam local, problem is serious, have impact on the development degree of oil reservoir and oily well capacity.Occur that the topmost reason of the problems referred to above is in pit shaft or does not have effective packing between stratum and screen casing annular space, the object of heavy crude heat extraction sectional well completion can not be realized.The key of this problem lacks the resistant to elevated temperatures external packer of pipe be suitable under heavy crude heat extraction environment, the external packer of pipe of conventional mechanical formula is not suitable with hot environment, and there is the risk setting inefficacy, and the rubber resistance to elevated temperatures of the external packer of pipe of the oil and water contact expansible of current main-stream is unstable, the requirement of heavy crude heat extraction cannot be met.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of viscous crude sectional well completion self-expanding external packer of pipe, the arrangement achieves and can set smoothly safely, the different payzones of horizontal well or straight well can be carried out effective packing, safe and reliable, realize the sectional well completion of heavy crude heat extraction, effective solution net horizontal section employs uneven problem, significantly promotes thick oil heat production steam injection efficiency, improves the ultimate recovery of heavy crude heat extraction.Overcome existing external packer of pipe and there is the risk setting inefficacy, the deficiency of functional performance instability.
Technical solution adopted in the utility model is: a kind of viscous crude sectional well completion self-expanding external packer of pipe, comprises top connection, central tube and lower contact, top connection, central tube is connected in turn with lower contact, central tube top, bottom is respectively installed with one-level cylinder body and secondary cylinder body, one-level cylinder body and secondary outer wall of cylinder block are equipped with righting cushion rubber, one-level is installed from swollen piston in one-level cylinder body, secondary is installed from swollen piston in secondary cylinder body, one-level all injects thermal expansion agent from swollen piston and secondary on swollen piston inner wall, central tube is set with one-level lock sleeve in turn, perform ring, one-level sets packing element, annulus back-up ring, secondary sets packing element, lower gear ring, secondary lock sleeve, one-level is connected with one-level lock sleeve back-off gingival cyst of mucous gland in the newborn from swollen piston inwall, one-level withstands on from swollen piston and performs on ring, secondary is connected with secondary lock sleeve back-off gingival cyst of mucous gland in the newborn from swollen piston upper end inwall, secondary withstands on lower gear ring from swollen piston upper end.
The beneficial effects of the utility model are: the utility model can set safely smoothly, the different payzones of horizontal well or straight well can be carried out effective packing, safe and reliable, realize the sectional well completion completion of heavy crude heat extraction, effective solution net horizontal section employs uneven problem, significantly promote thick oil heat production steam injection efficiency, improve the ultimate recovery of heavy crude heat extraction.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention:
As shown in Figure 1, a kind of viscous crude sectional well completion self-expanding external packer of pipe, comprises top connection 1, central tube 2 and lower contact 12, top connection 1, central tube 2 is connected in turn with lower contact 12, central tube 2 top, bottom is respectively installed with one-level cylinder body 4 and secondary cylinder body 11, one-level cylinder body 4 and secondary cylinder body 11 outer wall are equipped with righting cushion rubber 3, one-level is installed from swollen piston in one-level cylinder body 4, secondary is installed from swollen piston in secondary cylinder body 11, one-level all injects thermal expansion agent from swollen piston and secondary on swollen piston inner wall, central tube 2 is set with one-level lock sleeve 5 in turn, perform ring 6, one-level sets packing element 7, annulus back-up ring, secondary sets packing element 8, lower gear ring 9, secondary lock sleeve 10, one-level is connected with one-level lock sleeve 5 back-off gingival cyst of mucous gland in the newborn from swollen piston inwall, one-level withstands on from swollen piston and performs on ring 6, secondary is connected with secondary lock sleeve 10 back-off gingival cyst of mucous gland in the newborn from swollen piston upper end inwall, secondary withstands on lower gear ring 9 from swollen piston upper end.
During use, after environment temperature rises, thermal expansion agent is heated and is understood automatic expansion, the thrust produced after expanding can promote that one-level moves downward from swollen piston, secondary is from swollen piston upwards, one-level sets packing element 7 and secondary sets packing element 8 owing to being subject to thrust, be squeezed and realize swollen envelope, simultaneously owing to being connected with lock sleeve back-off gingival cyst of mucous gland in the newborn from swollen piston, ensure that the stroke thrust of piston completes back piston and do not rebound, make the power continued compression acted on packing element, ensure the swollen maintenance standing state of being honored as a queen of instrument twin-stage packing element, improve the reliability of this instrument.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. a viscous crude sectional well completion self-expanding external packer of pipe, comprises top connection (1), central tube (2) and lower contact (12), it is characterized in that: top connection (1), central tube (2) is connected in turn with lower contact (12), central tube (2) top, bottom is respectively installed with one-level cylinder body (4) and secondary cylinder body (11), one-level cylinder body (4) and secondary cylinder body (11) outer wall are equipped with righting cushion rubber (3), one-level is installed from swollen piston in one-level cylinder body (4), secondary is installed from swollen piston in secondary cylinder body (11), one-level all injects thermal expansion agent from swollen piston and secondary on swollen piston inner wall, central tube (2) is set with in turn one-level lock sleeve (5), perform ring (6), one-level sets packing element (7), annulus back-up ring, secondary sets packing element (8), lower gear ring (9), secondary lock sleeve (10), one-level is connected with one-level lock sleeve (5) back-off gingival cyst of mucous gland in the newborn from swollen piston inwall, one-level withstands on the ring that performs (6) from swollen piston, secondary is connected with secondary lock sleeve (10) back-off gingival cyst of mucous gland in the newborn from swollen piston upper end inwall, secondary withstands on lower gear ring (9) from swollen piston upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926910.2U CN205225170U (en) | 2015-11-19 | 2015-11-19 | Packer outside expansion pipe is used in viscous crude segmentation well completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926910.2U CN205225170U (en) | 2015-11-19 | 2015-11-19 | Packer outside expansion pipe is used in viscous crude segmentation well completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225170U true CN205225170U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520926910.2U Active CN205225170U (en) | 2015-11-19 | 2015-11-19 | Packer outside expansion pipe is used in viscous crude segmentation well completion |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222852A (en) * | 2016-12-21 | 2018-06-29 | 中国石油天然气股份有限公司 | Horizontal well steam injection tubing string |
| CN110094191A (en) * | 2018-01-29 | 2019-08-06 | 中国石油化工股份有限公司 | A kind of thermal production well fragment-force injection-production column jacket and method |
| CN117846534A (en) * | 2024-03-07 | 2024-04-09 | 中国石油大学(华东) | High-temperature-resistant heat-insulation packer for thickened oil heat |
-
2015
- 2015-11-19 CN CN201520926910.2U patent/CN205225170U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222852A (en) * | 2016-12-21 | 2018-06-29 | 中国石油天然气股份有限公司 | Horizontal well steam injection tubing string |
| CN110094191A (en) * | 2018-01-29 | 2019-08-06 | 中国石油化工股份有限公司 | A kind of thermal production well fragment-force injection-production column jacket and method |
| CN110094191B (en) * | 2018-01-29 | 2021-06-29 | 中国石油化工股份有限公司 | Forced segmented injection-production pipe column and method for thermal production well |
| CN117846534A (en) * | 2024-03-07 | 2024-04-09 | 中国石油大学(华东) | High-temperature-resistant heat-insulation packer for thickened oil heat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201010 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 124010 Xinglongtai, Liaoning Province, oil street, No. 96, No. Patentee before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |