CN204703878U - A kind of high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings - Google Patents
A kind of high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings Download PDFInfo
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- CN204703878U CN204703878U CN201520416818.1U CN201520416818U CN204703878U CN 204703878 U CN204703878 U CN 204703878U CN 201520416818 U CN201520416818 U CN 201520416818U CN 204703878 U CN204703878 U CN 204703878U
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- tubing string
- injection
- flow regulator
- downhole flow
- well
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Abstract
The utility model relates to a kind of high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings, comprise tubing string, oil pipe reducer union, injection well downhole flow regulator A, injection well downhole flow regulator B, layer separating packer, centralizer, guiding plug, screen casing is with under the oily swell packers completion condition of chance, in sleeve, connected pipes post is installed, tubing string comprises straight well section tubing string, the horizontal segment tubing string be connected by oil pipe reducer union with straight well section tubing string, horizontal segment tubing string is disposed with injection well downhole flow regulator A, layer separating packer, centralizer and guiding plug, layer separating packer is installed on meets center position in oily swell packers, meet both sides in oily swell packers and be separately installed with a centralizer.The tubular column structure that the utility model provides is reasonable, handling ease, easy to operate, reliable operation; Layer separating packer sets and behind center, can realize two sections of dispensings of oilfield horizontal well waterflooding extraction, can significantly improve the scope of application and the practical function of horizontal well technology in the oily swell packers of chance.
Description
Technical field
The utility model relates to oil-gas field development horizontal well in segments water injection technology field, specifically relate to a kind of be applicable to high injection allocation amount condition under, the high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings of horizontal well in segments water filling under screen casing and chance oil swell packers completion condition.
Background technology
Water injection of horizontal well technology is a brand-new and potential technology, particularly in the exploitation of low permeability oil field, not only can reduce injection pressure, increase injection rate, produce abundant thermal crack(ing, and can also Linear Driving be approximately to a certain extent, drastically increase oil displacement efficiency.Generally speaking, the ligh-oil reservoir that reservoir properties homogeneous, hyposmosis, thin reservoir, wide spacing and oil and water mobility ratio are low is more suitable for horizontal flood exploitation.General design generally taked by horizontal flood well in the past, do not adapt to screen casing and meet the completion condition of oily swell packers, and when injection allocation amount is very high, the injection well downhole flow regulator of the water injection technology generally designed easily damages due to high water injection rate, and easily form macropore, reduce swept volume.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of be applicable to high injection allocation amount condition under, the high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings of horizontal well in segments water filling under screen casing and chance oil swell packers completion condition.
For solving the problems of the technologies described above, the utility model provides following technical scheme: a kind of high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings, comprise tubing string, oil pipe reducer union, injection well downhole flow regulator, layer separating packer, centralizer, guiding plug, described injection well downhole flow regulator comprises injection well downhole flow regulator A and injection well downhole flow regulator B, screen casing is with under the oily swell packers completion condition of chance, in sleeve, connected pipes post is installed, described tubing string comprises straight well section tubing string and horizontal segment tubing string, described straight well section tubing string connects horizontal segment tubing string by oil pipe reducer union, described horizontal segment tubing string is disposed with injection well downhole flow regulator A, layer separating packer, centralizer and guiding plug, described layer separating packer is installed on meets center position in oily swell packers, in the oily swell packers of described chance, both sides are separately installed with a centralizer, described injection well downhole flow regulator A is placed between horizontal well heel end and left side centralizer, described injection well downhole flow regulator B is placed between horizontal well finger tip and right side centralizer.
As preferred to the one of technique scheme, described straight well section tubing string adopts 3, and " " EUE oil pipe, described oil pipe reducer union adopts 3 " EUE oil pipe reducer unions to EUE oil pipe, described horizontal segment tubing string adopts 2-7/8.
The beneficial effect that the utility model compared with prior art has is: the tubing string that the utility model provides, and (1) it is rational in infrastructure, handling ease, easy to operate, reliable operation; (2) layer separating packer to set in the oily swell packers of chance behind center, two sections of dispensings of oilfield horizontal well waterflooding extraction can be realized, the scope of application and the practical function of horizontal well technology can be significantly improved, all kinds of horizontal well two sections of subsection water injection techniques can be widely used in.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Number in the figure is: 1-sleeve pipe, 2-straight well section tubing string, 3-horizontal segment tubing string, the reducer union of 4-oil pipe, 5-injection well downhole flow regulator A, 6-injection well downhole flow regulator B, and 7-meets oily swell packers, 8-layer separating packer, 9-centralizer, and 10-leads plug, 11-screen casing.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In description of the present utility model, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is only the utility model for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
Known with reference to Fig. 1, a kind of high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings, comprise tubing string, oil pipe reducer union 4, injection well downhole flow regulator, layer separating packer 8, centralizer 9, guiding plug 10, described injection well downhole flow regulator comprises injection well downhole flow regulator A5 and injection well downhole flow regulator B6, screen casing 11 with holes is with under the oily swell packers 7 completion condition of chance, in sleeve 1, connected pipes post is installed, described tubing string comprises straight well section tubing string 2 and horizontal segment tubing string 3, wherein straight well section tubing string 2 adopts 3 " EUE oil pipe, horizontal segment tubing string 3 adopts 2-7/8 " EUE oil pipe, " EUE oil pipe reducer union that oil pipe reducer union 4 adopts 3, described straight well section tubing string 2 connects horizontal segment tubing string 3 by oil pipe reducer union 4, described horizontal segment tubing string 3 is disposed with injection well downhole flow regulator A5, layer separating packer 8, centralizer 9 and guiding plug 10, described layer separating packer 8 is installed on meets center position in oily swell packers 7, in the oily swell packers 7 of described chance, both sides are separately installed with a centralizer 9, described injection well downhole flow regulator A5 is placed between horizontal well heel end (starting point of horizontal flood well horizontal segment) and left side centralizer 9, described injection well downhole flow regulator B is placed between horizontal well finger tip (terminal of horizontal flood well horizontal segment) and right side centralizer 9.
Inject the horizontal segment tubing string 3 of water through 3 " straight well section tubing string 2 to the 2-7/8 of EUE oil pipe " EUE oil pipe, sprayed by the water nozzle of injection well downhole flow regulator A5 after meeting injection well downhole flow regulator A5, inject stratum through screen casing 11; Injection water proceeds to injection well downhole flow regulator B6 place and is sprayed by the water nozzle of injection well downhole flow regulator B6, injects stratum, realize subsection water injection through screen casing 11.
The tubing string that the utility model provides, it is rational in infrastructure, handling ease, easy to operate, reliable operation; Layer separating packer 8 sets and behind center, can realize two sections of dispensings of oilfield horizontal well waterflooding extraction, can significantly improve the scope of application and the practical function of horizontal well technology, can be widely used in all kinds of horizontal well two sections of subsection water injection techniques in the oily swell packers 7 of chance.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. one kind high injection allocation water gaging horizontal well, two sections of subsection water injection tubing strings, comprise tubing string, oil pipe reducer union, injection well downhole flow regulator, layer separating packer, centralizer, guiding plug, it is characterized in that: described injection well downhole flow regulator comprises injection well downhole flow regulator A and injection well downhole flow regulator B, screen casing is with under the oily swell packers completion condition of chance, in sleeve, connected pipes post is installed, described tubing string comprises straight well section tubing string and horizontal segment tubing string, described straight well section tubing string connects horizontal segment tubing string by oil pipe reducer union, described horizontal segment tubing string is disposed with injection well downhole flow regulator A, layer separating packer, centralizer and guiding plug, described layer separating packer is installed on meets center position in oily swell packers, in the oily swell packers of described chance, both sides are separately installed with a centralizer, described injection well downhole flow regulator A is placed between horizontal well heel end and left side centralizer, described injection well downhole flow regulator B is placed between horizontal well finger tip and right side centralizer.
2. one according to claim 1 high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings, it is characterized in that: described straight well section tubing string adopts 3 that " " EUE oil pipe, described oil pipe reducer union adopts 3 " EUE oil pipe reducer unions to EUE oil pipe; described horizontal segment tubing string adopts 2-7/8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520416818.1U CN204703878U (en) | 2015-06-13 | 2015-06-13 | A kind of high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520416818.1U CN204703878U (en) | 2015-06-13 | 2015-06-13 | A kind of high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204703878U true CN204703878U (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520416818.1U Expired - Fee Related CN204703878U (en) | 2015-06-13 | 2015-06-13 | A kind of high injection allocation water gaging horizontal well two sections of subsection water injection tubing strings |
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| CN (1) | CN204703878U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322645A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | Horizontal well sectional water injection process pipe column and allocation method thereof |
| CN115306358A (en) * | 2022-08-22 | 2022-11-08 | 西安石油大学 | Efficient water drive device for low-permeability fractured reservoir water injection well |
-
2015
- 2015-06-13 CN CN201520416818.1U patent/CN204703878U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322645A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | Horizontal well sectional water injection process pipe column and allocation method thereof |
| CN115306358A (en) * | 2022-08-22 | 2022-11-08 | 西安石油大学 | Efficient water drive device for low-permeability fractured reservoir water injection well |
| CN115306358B (en) * | 2022-08-22 | 2023-04-25 | 西安石油大学 | Efficient water driving device for low-permeability fractured reservoir water injection well |
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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: 20151014 Termination date: 20160613 |
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| CF01 | Termination of patent right due to non-payment of annual fee |