CN201915922U - Parallel double-pipe subdivision gas injection tubular column for offshore oil field - Google Patents
Parallel double-pipe subdivision gas injection tubular column for offshore oil field Download PDFInfo
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- CN201915922U CN201915922U CN201020670177XU CN201020670177U CN201915922U CN 201915922 U CN201915922 U CN 201915922U CN 201020670177X U CN201020670177X U CN 201020670177XU CN 201020670177 U CN201020670177 U CN 201020670177U CN 201915922 U CN201915922 U CN 201915922U
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- gas injection
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Abstract
A parallel double-pipe subdivision gas injection tubular column for an offshore oil field consists of a long gas injection pipe, a short gas injection pipe, a rotary expansion joint, a working barrel for the gas injection of the short pipe, a sliding sleeve for the gas injection of the long pipe; and the working barrel for the gas injection of the long pipe. During well completion and gas injection, the rotary expansion joint plays a role in regulating the inconsistent length variation of the long and short pipes; during subdivision gas injection, the short pipe separately injects one layer; the long pipe can generally inject the other two layers or separately inject one layer; and the gas injection amount can be regulated in real time and conveniently on the ground to realize subdivided and quantified gas injection control. Through the parallel double-pipe subdivision gas injection tubular column, the ground control and subdivided and quantified gas injection can be realized; the requirements of oil exploration are met; and the parallel double-pipe subdivision gas injection tubular column has good adaptability for layered gas injection.
Description
Technical field
The utility model belongs to a kind of marine oil field two-tube segmentation gas injection tubing string arranged side by side.
Background technology
Existing gas injection tubing string has single tube gas injection tubing string and two-tube gas injection tubing string.Single tube gas injection tubing string is to adjust the layered gas-injection amount by being lowered to side-pocket mandrel+valve nozzle, and existing problems are that the work of steel wire operation pulling valve nozzle adjustment distribution amount is loaded down with trivial details, and can not require to carry out real-time quantitative refinement gas injection, gas injection weak effect according to oil reservoir; Two-tube gas injection tubing string is to be lowered to an outer tube in sleeve pipe, in outer tube, be lowered to a concentric inner hose then again, realize the two-layer purpose of inner and outer pipe notes, existing problems are that gas injection rate is restricted, can only realize annotating two-layer, the length variable quantity is inconsistent during the inner and outer pipe gas injection, easily causes the tubing string distortion, causes problems such as the leakage of inner and outer pipe string, inefficacy.These two kinds of gas injection tubing strings do not satisfy the oil district gas injection development requirement of southwest, Wei from aspects such as layering quantity, gas injection quantification, operation and allotment complexity and safety.
Summary of the invention
The purpose of this utility model provides a kind of marine oil field two-tube segmentation gas injection tubing string arranged side by side, shortcoming or deficiency that it can overcome effectively or avoid existing in the above-mentioned prior art.According to injection-production relation, can realize segmenting gas injection, satisfy the oil reservoir development demand, but ground real-time quantization control gas injection rate improves the gas injection effect effectively, solve the problem that exists in depleted formula exploitation and the waterflooding extraction simultaneously, realize improving the purpose of development effectiveness.
The utility model is made up of two-tube tubing hanger, gas injection long tube, gas injection short tube, storm valve, storm valve, rotary extension joint, kill-job sliding sleeve, dual tubing packing, short tube gas injection seating nipple, short tube guide shoe, tail pipe extension, casing shoe, induced flow sliding sleeve, single tube packer, long tube gas injection sliding sleeve, single tube packer, long tube gas injection seating nipple, shearing ball seat, two-tube tubing hanger is connected with gas injection long tube, gas injection short tube, and storm valve, rotary extension joint, kill-job sliding sleeve, dual tubing packing, gas injection short tube seating nipple, short tube guide shoe are housed on the gas injection short tube; Storm valve, dual tubing packing, induced flow sliding sleeve, single tube packer, long tube gas injection sliding sleeve, single tube packer, long tube gas injection seating nipple are housed on the gas injection long tube, shear ball seat, by this two-tube gas injection tubing string, to three sand bodies, segmentation gas injection.
Main effect of the present utility model:
1) two-tube segmentation gas injection tubing string can be realized the control of ground injecting gas real-time quantization, regulates in real time separately according to the gas injection pressure and the gas injection rate situation of each pipe, produces and injection allocation requirement adjustment gas injection rate by joining, and satisfies the requirement of the meticulous exploitation of oil reservoir.
2) the short-and-medium pipe of two-tube gas injection tubing string can be separately to top sand body gas injection; Long tube can realize that to the general gas injection of two sand bodies of lower floor or the requirement of annotating a sand body separately exploitation has favorable applicability for layered gas-injection.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Use two-tube tubing hanger 1 as shown in Figure 1; gas injection short tube 3 connects rotary extension joint 6; play gas injection long tube 2 and the inconsistent effect of gas injection short tube 3 change in length amounts adjusted during gas injection; connect kill-job sliding sleeve 7 below the rotary extension joint 6; play the kill-job effect during operation; be connected recyclable dual tubing packing 8 together with gas injection long tube 2 then, play the effect of protection upper annulus.Gas injection long tube 2 is order pipe packer 15 and single tube packer 18 again, is lowered in the tail pipe and goes, and plays lamination, can realize general gas injection or layered gas-injection.Rely on two-tube gas injection tubing string arranged side by side to realize quantizing the oil reservoir development requirement of segmentation gas injection.By this two-tube gas injection tubing string, can realize three sand bodies 13,17 and 20 segmentation gas injection requirements.
Gas injection well need be checked casing strength, for determining the compliance of gas injection well well to gas injection, presses, resists outer extruding force, trapezoidal thread sleeve pipe tensile strength to check in respectively sleeve pipe being resisted, and by checking, sleeve pipe satisfies the gas injection requirement.
Gas injection well well head corollary equipment need be transformed, and considers conditions such as gas injection pressure and gas injection temperature, and because of being two-tube gas injection, so the well head production tree need be replaced by the two-tube gas well production tree that satisfies condition, and while tubing hanger is replaced by two-tube hermetic seal tubing hanger.
For satisfying requirement such as gas injection rate, select to analyze to oil pipe, according to the gas injection layer position and the gas injection rate of gas injection long tube 2, gas injection short tube 3, analyze the pipe aperture that preferably satisfies gas injection rate.According to the gas injection composition, to analyze the tube corrosion situation simultaneously, can satisfy requirement for anticorrosion during the gas injection development substantially by analyzing selected tubing.
When completion and gas injection, rotary extension joint 6 plays gas injection long tube 2 and the inconsistent effect of gas injection short tube 3 change in length amounts adjusted, realize upper strata sand body 13 is implemented independent gas injection by gas injection short tube 3 and short tube gas injection seating nipple 9, can realize lower floor's sand body 17 and sand body 20 general gas injections or segment gas injection separately by gas injection long tube 2, long tube gas injection sliding sleeve 16 and long tube gas injection seating nipple 19.Gas injection short tube 3 is annotated one deck separately, and gas injection long tube 2 can generally be annotated wherein one deck of other two-layer or independent notes.
Claims (1)
1. the two-tube segmentation gas injection of marine oil field tubing string, by two-tube tubing hanger, the gas injection long tube, the gas injection short tube, storm valve, storm valve, the rotary extension joint, the kill-job sliding sleeve, dual tubing packing, short tube gas injection seating nipple, the short tube guide shoe, tail pipe is hung, casing shoe, the induced flow sliding sleeve, the single tube packer, long tube gas injection sliding sleeve, the single tube packer, long tube gas injection seating nipple, the shearing ball seat is formed, it is characterized in that two-tube tubing hanger (1) and gas injection long tube (2), gas injection short tube (3) connects, and first storm valve (4) is housed on the gas injection short tube (3), rotary extension joint (6), kill-job sliding sleeve (7), dual tubing packing (8), gas injection short tube seating nipple (9), short tube guide shoe (10); Second storm valve (5), dual tubing packing (8), induced flow sliding sleeve (14), single tube packer (15), long tube gas injection sliding sleeve (16), single tube packer (18), long tube gas injection seating nipple (19) are housed on the gas injection long tube (2), shear ball seat (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020670177XU CN201915922U (en) | 2010-12-15 | 2010-12-15 | Parallel double-pipe subdivision gas injection tubular column for offshore oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020670177XU CN201915922U (en) | 2010-12-15 | 2010-12-15 | Parallel double-pipe subdivision gas injection tubular column for offshore oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201915922U true CN201915922U (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020670177XU Expired - Fee Related CN201915922U (en) | 2010-12-15 | 2010-12-15 | Parallel double-pipe subdivision gas injection tubular column for offshore oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201915922U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337873A (en) * | 2011-09-01 | 2012-02-01 | 中国石油天然气股份有限公司 | Multi-channel separate injection tubular column of oil tube for polymers |
| CN104879097A (en) * | 2015-06-12 | 2015-09-02 | 中国海洋石油总公司 | Gas well production string provided with double parallel pipes |
| CN108729884A (en) * | 2017-04-20 | 2018-11-02 | 中国石油天然气股份有限公司 | A kind of extracting device of oil and its application |
| CN109322646A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of separate injection tubing string and application method for flushing |
-
2010
- 2010-12-15 CN CN201020670177XU patent/CN201915922U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337873A (en) * | 2011-09-01 | 2012-02-01 | 中国石油天然气股份有限公司 | Multi-channel separate injection tubular column of oil tube for polymers |
| CN102337873B (en) * | 2011-09-01 | 2014-09-17 | 中国石油天然气股份有限公司 | Multi-channel separate injection tubular column of oil tube for polymers |
| CN104879097A (en) * | 2015-06-12 | 2015-09-02 | 中国海洋石油总公司 | Gas well production string provided with double parallel pipes |
| CN108729884A (en) * | 2017-04-20 | 2018-11-02 | 中国石油天然气股份有限公司 | A kind of extracting device of oil and its application |
| CN109322646A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of separate injection tubing string and application method for flushing |
| CN109322646B (en) * | 2017-07-31 | 2023-10-31 | 中国石油天然气股份有限公司 | Separate injection pipe column for oil well water injection and use method |
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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: 20110803 Termination date: 20151215 |
|
| EXPY | Termination of patent right or utility model |