CN102900409A - Throwing-fishing-free separated layer water injection technology tubular column - Google Patents
Throwing-fishing-free separated layer water injection technology tubular column Download PDFInfo
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- CN102900409A CN102900409A CN2011102086751A CN201110208675A CN102900409A CN 102900409 A CN102900409 A CN 102900409A CN 2011102086751 A CN2011102086751 A CN 2011102086751A CN 201110208675 A CN201110208675 A CN 201110208675A CN 102900409 A CN102900409 A CN 102900409A
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Abstract
The invention relates to a water injection well oil tube fine separated layer process tubular column. A throwing-fishing-free separated layer water injection technology tubular column comprises a water well special screen tube (8), double-valve ball seats (7), an anchoring device, a packing device, an oil tube separator (3), a hedging packer (2) and an oil tube column (1), wherein the tubular column also comprises a liquid control switch quantitative water distributor (4), and various components are fixedly connected sequentially. The tubular column adopts the water distribution mode that two functions of quantitative water distribution and intelligent water injection quantity distribution by a liquid control switch are combined, not only the multi-layer fine separated layer water injection for the water injection well can be met, but also the water injection quantity is distributed without a steel wire throwing-fishing stopper; the function for regulating water distribution quantity at any layer by oil tube separated layer water injection throwing-fishing measurement and distribution is realized; the oil field throwing-fishing measurement and distribution difficulty or water injection well separated injection difficulty without a throwing-fishing measurement and distribution condition is solved; a tubular column matched oil tube separator is beneficial to tubular column unsealing and tubular column measurement treatment at the rear stage for a deposit corrosion water injection well; and the tubular column is simple in structure, and is safe and reliable.
Description
Technical field
The present invention relates to a kind of injection well tubing subdivision of reservoir water injection technological string, particularly a kind of injection well tubing subdivision of reservoir casting-and-fishing-free separated layer water injection process pipe string.
Background technology
Along with oil field development is goed deep into, the stratum becomes increasingly complex, interlayer difference is large, closes to annotate or two sections ground dispensings of one-level can not satisfy Production requirement, and the subdivision of reservoir water filling has become and solves interlayer contradiction, improves between producing degree of reservoir, tap layer the effective measures of potentiality.
At present, oil pipe eccentric separated-injection technology has been used maturation in the oil field, satisfies the demand of two sections of one-levels or the above dispensing well of two-stage three-segment, has reached the purpose of subdivision of reservoir water filling, injecting enough water, injecting good water and Effective water injection.Because the secondary pollution of part Oilfield Water Injection Pipelines, pit shaft tubing string and water injection tool fouling, seriously corroded are implemented the pulling of oil pipe eccentric separated-injection technique and are measured difficulty, and pulling and running tool is lower in oil pipe not to be gone, carry to come up.
In recent years, the casting and dragging free separate injection tubing string is mainly by three types: a kind of is quantitative water distribution separate injection tubing string take quantitative water distributor or Quantitative water tap as water-distributing tool, domestic its structural principle basic simlarity of quantitative water distribution separate injection tubing string, injection well downhole flow regulator carries water nozzle and directly is lowered to tubing string, change control injection allocation amount by the pressure reduction before and after the water nozzle in the blanking plug during water filling, the injection allocation amount is always a steady state value, compare with conventional oil pipe eccentric separated-injection tubing string, reduce the number of times that pulling is measured, prolong the period of validity of tubing string, improve the dispensing effect.If water nozzle was stung large or throttling spring failure when its deficiency was water filling, just the injection allocation amount changes, no longer was steady state value, allocating water injection rate then needs the pulling blanking plug or proposes separate injection tubing string in the well again.Another kind is concentric double pipe ground separate injection tubing string, and the water injection rate allotment is by ground control, and accurately convenient, its deficiency is that the dispensing number of plies is restricted, and can only reach two-stage three-segment.Another is the intelligent allotment water pipe post of surveying of dispensing, once drops into blanking plug, can allocate continuously water nozzle, compare with conventional eccentric separated-injection tubing string, individual well test job efficient can improve 4/5ths, and weak point is exactly that cost is high, and the scene is difficult to large scale application.
Summary of the invention
The purpose of this invention is to provide a kind of casting-and-fishing-free separated layer water injection process pipe string that comprises novel hydraulic-control switch quantitative water distributor, solve the oil field pulling and be measured difficulty or do not have pulling to be measured the water injection well dispensing difficult problem of condition.The water distribution mode that adopts two kinds of functions of quantitative water distribution and pilot-controlled switch intelligent allocation water injection rate to be combined, can satisfy water injection well multilayer subdivision of reservoir water filling needs has reached again and exempts to have realized that with wire Launching and Bailing blanking plug allotment water injection rate oil pipe seperated layer water injection casting and dragging free is measured the function of adjusting the random layer water distribution quantity.String matching oil pipe eliminator is conducive to the tubing string measure processing in tubing string deblocking and later stage to the water injection well of fouling corrosion, tubular column structure is simple, convenient, safe and reliable.
The technical solution used in the present invention is: casting-and-fishing-free separated layer water injection process pipe string comprises well Special screen 8, two valve ball seat 7, anchoring device, packing device, oil pipe eliminator 3, cover guarantor's packer 2 and tubing string 1, this tubing string also comprises pilot-controlled switch quantitative water distributor 4, the water distribution mode that adopts two kinds of functions of quantitative water distribution and pilot-controlled switch intelligent allocation water injection rate to be combined, can satisfy water injection well multilayer subdivision of reservoir water filling needs has reached again and exempts to have realized that with wire Launching and Bailing blanking plug allotment water injection rate oil pipe seperated layer water injection casting and dragging free is measured the function of adjusting the random layer water distribution quantity.
This tubing string is fixedly connected sequentially and is formed by described well Special screen 8, described pair of valve ball seat 7, described pilot-controlled switch quantitative water distributor 4, described anchoring device, described packing device, described oil pipe eliminator 3, described cover guarantor's packer 2 and described tubing string 1.
Wherein, described well Special screen 8 also can be composed of a fixed connection by plug 12 and screen casing 11.Described anchoring device can be hydraulic slip 6 or bidirectional anchor 9.Described packing device can be water injection packer 5 or insert-seal device 10.Described insert-seal device 10 is inserted into the described sealing drum 13 interior sealing location of presetting.Also be that screen casing, anchoring device, packing device have two kinds of optional technical schemes.
For better realization purpose of the present invention, described tubing string can be installed the described pilot-controlled switch quantitative water distributors 4 of many covers.
The invention has the advantages that: this tubing string is installed many cover pilot-controlled switch quantitative water distributors, not only realize the subdivision of reservoir water filling of conventional well level Four more than five sections, and can realize the water filling of oil pipe subdivision of reservoir to the dispensing well that do not possess oil pipe eccentric separated-injection condition (as: corrosion and scaling, deep-well, large gradient) etc., no matter be that conventional dispensing well or special dispensing well have realized that multistage multi-section multi-layer segments the function that notes are exempted from wire Launching and Bailing allotment water injection rate, has improved the success rate of dispensing well; This process pipe string is simple and reasonable for structure, and performance safety is reliable; The allotment water injection rate is convenient, time saving and energy saving, the accurate error of data is little.
The invention will be further described below in conjunction with accompanying drawing:
Description of drawings
Fig. 1 is the structural representation of tubing string the first embodiment of the present invention;
Fig. 2 is the structural representation of tubing string the second embodiment of the present invention.
The specific embodiment
Casting-and-fishing-free separated layer water injection process pipe string of the present invention comprises well Special screen 8, two valve ball seat 7, anchoring device, packing device, oil pipe eliminator 3, cover guarantor's packer 2 and tubing string 1, this tubing string also comprises pilot-controlled switch quantitative water distributor 4, the water distribution mode that adopts two kinds of functions of quantitative water distribution and pilot-controlled switch intelligent allocation water injection rate to be combined, can satisfy water injection well multilayer subdivision of reservoir water filling needs has reached again and exempts to have realized that with wire Launching and Bailing blanking plug allotment water injection rate oil pipe seperated layer water injection casting and dragging free is measured the function of adjusting the random layer water distribution quantity.
This tubing string is fixedly connected sequentially and is formed by described well Special screen 8, described pair of valve ball seat 7, described pilot-controlled switch quantitative water distributor 4, described anchoring device, described packing device, described oil pipe eliminator 3, described cover guarantor's packer 2 and described tubing string 1.
Wherein, described well Special screen 8 also can be composed of a fixed connection by plug 12 and screen casing 11.Described anchoring device can be hydraulic slip 6 or bidirectional anchor 9.Described packing device can be water injection packer 5 or insert-seal device 10.Described insert-seal device 10 is inserted into the described sealing drum 13 interior sealing location of presetting.Also be that screen casing, anchoring device, packing device have two kinds of optional technical schemes.
For better realization purpose of the present invention, described tubing string can be installed the described pilot-controlled switch quantitative water distributors 4 of many covers.
The first embodiment of the present invention as shown in Figure 1.This tubing string protects packer 2 by well Special screen 8, two valve ball seat 7, pilot-controlled switch quantitative water distributor 4, hydraulic slip 6, water injection packer 5 oil pipe eliminators 3, cover and tubing string 1 well is lowered to the pit shaft design attitude from bottom to top by the working design ground-mounted, it is setting that oil pipe is suppressed water injection packer 5, packing element is sealed in the oil jacket annular space, each water filling interval is separated, become independently space.Get final product quantitative injection by the injection allocation amount after the construction, carry out the constant water filling by the constant device down-hole of pilot-controlled switch quantitative water distributor 4 first, influence of fluctuations is not stressed; When needing to regulate water injection rate, suppress to pilot-controlled switch injection pressure code, after pilot-controlled switch is received the pressure code identical with it, open or close just and can carry out the adjusting of water injection rate.Can carry out random layer and regulate, not limited by layer position and number of times.
The second embodiment of the present invention as shown in Figure 2.This tubing string is by plug 12, screen casing 11, pilot-controlled switch quantitative water distributor 4, insert-seal device 10, bidirectional anchor 9, oil pipe eliminator 3, packer 2 protected by cover and tubing string 1 forms, when boring completion, sleeve pipe is preset sealing drum 13 and be installed in advance water filling layer circle, top and Di Jie, tubing string well is lowered to pit shaft from bottom to top by working design requirement ground-mounted, insert-seal device 10 times is after preset sealing drum 13 positions, be inserted into and preset in the sealing drum 13 and the sealing location, oil reservoir is separated into some intervals, be lowered to pilot-controlled switch quantitative water distributor 4 in each interval, realize the above subdivision of reservoir water filling of two-stage three-segment.Get final product quantitative injection by the injection allocation amount after the construction, carry out the constant water filling by the constant device down-hole of pilot-controlled switch quantitative water distributor 4 first, influence of fluctuations is not stressed; When needing to regulate water injection rate, suppress to pilot-controlled switch injection pressure code, after pilot-controlled switch is received the pressure code identical with it, open or close just and can carry out the adjusting of water injection rate.Can carry out random layer and regulate, not limited by layer position and number of times.
When needing water to change, the direct deblocking of upper lifting pipe post proposes tubing string, if deblocking is not smooth, and rotation pipeline 1, tubing string proposes from oil pipe eliminator 3 turn-ofves.Then, well-flushing is lowered to fishing string again, pulls remaining tubing string out.
Claims (7)
1. casting-and-fishing-free separated layer water injection process pipe string, comprise well Special screen (8), two valve ball seat (7), anchoring device, packing device, oil pipe eliminator (3), cover guarantor's packer (2) and tubing string (1), it is characterized in that: this tubing string also comprises pilot-controlled switch quantitative water distributor (4).
2. casting-and-fishing-free separated layer water injection process pipe string according to claim 1 is characterized in that: packer (2) protected by described well Special screen (8), described pair of valve ball seat (7), described pilot-controlled switch quantitative water distributor (4), described anchoring device, described packing device, described oil pipe eliminator (3), described cover and described tubing string (1) is fixedly connected sequentially.
3. casting-and-fishing-free separated layer water injection process pipe string according to claim 2, it is characterized in that: described well Special screen (8) is composed of a fixed connection by plug (12) and screen casing (11).
4. casting-and-fishing-free separated layer water injection process pipe string according to claim 2, it is characterized in that: described anchoring device is hydraulic slip (6) or bidirectional anchor (9).
5. casting-and-fishing-free separated layer water injection process pipe string according to claim 2, it is characterized in that: described packing device is water injection packer (5) or insert-seal device (10).
6. casting-and-fishing-free separated layer water injection process pipe string according to claim 5 is characterized in that: described insert-seal device (10) is inserted into the described sealing location in the sealing drum (13) of presetting.
7. casting-and-fishing-free separated layer water injection process pipe string according to claim 2 is characterized in that: the described pilot-controlled switch quantitative water distributors (4) of cover more than described tubing string can be installed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110208675.1A CN102900409B (en) | 2011-07-25 | 2011-07-25 | Throwing-fishing-free separated layer water injection technology tubular column |
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| CN201110208675.1A CN102900409B (en) | 2011-07-25 | 2011-07-25 | Throwing-fishing-free separated layer water injection technology tubular column |
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| CN102900409A true CN102900409A (en) | 2013-01-30 |
| CN102900409B CN102900409B (en) | 2017-04-12 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141477A (en) * | 2014-07-28 | 2014-11-12 | 克拉玛依市红都有限责任公司 | Concentric three-tube separated layer water injection device and using method thereof |
| CN104847319A (en) * | 2015-05-26 | 2015-08-19 | 成都北方石油勘探开发技术有限公司 | Triune quantitative water injection device |
| CN105089571A (en) * | 2014-05-24 | 2015-11-25 | 天津大港油田钻采技术开发公司 | Water injection string without surface flow and water injection technological method of water injection string |
| CN110905446A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Double-ball switch device |
| US11008830B2 (en) | 2018-10-15 | 2021-05-18 | Petrochina Company Limited | Stratified waterflooding apparatus |
| CN112855096A (en) * | 2021-02-03 | 2021-05-28 | 李青 | Simple separate layer water injection string |
| CN114876424A (en) * | 2022-06-07 | 2022-08-09 | 中海石油(中国)有限公司深圳分公司 | Separate mining and separate injection string and separate mining and separate injection method |
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| CN201581877U (en) * | 2009-11-20 | 2010-09-15 | 大庆油田有限责任公司 | Same-well multi-layer injection-production technical tubing string |
| CN202249994U (en) * | 2011-07-25 | 2012-05-30 | 中国石油天然气股份有限公司 | Casting-and-fishing-free separated layer water injection process pipe string |
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Patent Citations (4)
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| CN201013335Y (en) * | 2007-04-11 | 2008-01-30 | 大庆油田有限责任公司 | Water injection well pressure-working technique pipe column |
| CN101498211A (en) * | 2009-02-26 | 2009-08-05 | 中国石油化工股份有限公司 | Method for water distribution by sound wave remote control |
| CN201581877U (en) * | 2009-11-20 | 2010-09-15 | 大庆油田有限责任公司 | Same-well multi-layer injection-production technical tubing string |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089571A (en) * | 2014-05-24 | 2015-11-25 | 天津大港油田钻采技术开发公司 | Water injection string without surface flow and water injection technological method of water injection string |
| CN104141477A (en) * | 2014-07-28 | 2014-11-12 | 克拉玛依市红都有限责任公司 | Concentric three-tube separated layer water injection device and using method thereof |
| CN104847319A (en) * | 2015-05-26 | 2015-08-19 | 成都北方石油勘探开发技术有限公司 | Triune quantitative water injection device |
| CN110905446A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Double-ball switch device |
| CN110905446B (en) * | 2018-09-18 | 2022-05-06 | 中国石油天然气股份有限公司 | Double-ball switch device |
| US11008830B2 (en) | 2018-10-15 | 2021-05-18 | Petrochina Company Limited | Stratified waterflooding apparatus |
| CN112855096A (en) * | 2021-02-03 | 2021-05-28 | 李青 | Simple separate layer water injection string |
| CN114876424A (en) * | 2022-06-07 | 2022-08-09 | 中海石油(中国)有限公司深圳分公司 | Separate mining and separate injection string and separate mining and separate injection method |
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| CN102900409B (en) | 2017-04-12 |
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