CN201090197Y - Three-stage four-section separate injection string for preventing water injection layer section from reversely discharging and channeling - Google Patents
Three-stage four-section separate injection string for preventing water injection layer section from reversely discharging and channeling Download PDFInfo
- Publication number
- CN201090197Y CN201090197Y CNU2007201497286U CN200720149728U CN201090197Y CN 201090197 Y CN201090197 Y CN 201090197Y CN U2007201497286 U CNU2007201497286 U CN U2007201497286U CN 200720149728 U CN200720149728 U CN 200720149728U CN 201090197 Y CN201090197 Y CN 201090197Y
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- Prior art keywords
- level
- water filling
- injection mandrel
- eccentric
- filling interval
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 238000002347 injection Methods 0.000 title claims abstract description 77
- 239000007924 injection Substances 0.000 title claims abstract description 77
- 230000005465 channeling Effects 0.000 title abstract 2
- 238000007599 discharging Methods 0.000 title 1
- 230000006835 compression Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims abstract description 30
- 238000011010 flushing procedure Methods 0.000 claims description 33
- 239000000446 fuel Substances 0.000 claims description 12
- 239000004576 sand Substances 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 2
- 238000011001 backwashing Methods 0.000 abstract 3
- 238000005259 measurement Methods 0.000 abstract 1
- 239000003129 oil well Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 16
- 238000005086 pumping Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The three-level four-section anti-spitting and channeling-preventing separate injection string for the water injection string in the petroleum industry comprises a first-level anti-spitting eccentric water distributor (1), a first-level non-backwashing well compression packer (2), a first water injection layer section (13) and the like, wherein the first-level non-backwashing well compression packer (2) is arranged between the first water injection layer section (13) and a second water injection layer section (14) and is simultaneously arranged between the first-level anti-spitting eccentric water distributor (1) and a second-level anti-spitting eccentric water distributor (3); the second-stage non-backwashing well compression packer (4) is arranged between the second water injection layer section (14) and the third water injection layer section (15) and is also arranged between the second-stage anti-reverse-flow eccentric water distributor (3) and the third-stage anti-reverse-flow eccentric water distributor (5), so that the phenomenon of reverse-flow and channeling of injected water in the layer sections can be effectively avoided; the throwing and fishing measurement has high preparation power, and the well washing is not needed, so the labor intensity of workers can be reduced; the pipe column has strong adaptability to thick oil wells, sand producing wells and profile control post-injection wells, medium and shallow wells with low water injection pressure and large interval pressure difference, and the pipe column has long injection period.
Description
Technical field
The utility model provides a kind of petroleum industry water injection string to prevent the anti-channelling separate injection tubing string of telling of water filling interval with three grades four sections.
Background technology
At present, each oil field uses eccentric separate layer water injection string very general in middle shallow well multilayered reservoir waterflooding extraction process, and proportion is more than 80%.Three grades of applied dispensing instruments of four sections eccentric separate injection tubing strings mainly contain eccentric injection mandrel, packer, support waterpower slips, two ball seat, screen casing, plug etc.During normal water filling, water filling can normally enter the stratum from oil pipe through eccentric injection mandrel, satisfies the dispensing needs.But, because the imperfection of eccentric separate injection tubing string setted structure, in case termination of pumping stops annotating, have following 3 aspect problems: 1. for most of open type eccentric injection mandrel, the water that injects the stratum will be by eccentric injection mandrel by anti-low water filling interval of channelling entrance pressure power or the ground main line told of the high water filling interval of pressure; 2. because the design of the dispensing packer of most of wells has the backwash passage, during normal water filling, oil pressure is greater than casing pressure, flushing valve is closed, after termination of pumping stops annotating, oil pressure is less than or equal to casing pressure, and flushing valve can be opened, and the water that injects the stratum also can be by the packer well-washing passage by anti-low water filling interval of channelling entrance pressure power or the ground main line told of the high water filling interval of pressure; 3. two ball seats are ball-and-seat, can not effectively stop the two-way flow of water.Because eccentric separate injection tubing string fails effectively to solve the anti-channelling problem of telling of separate injection interval, inject that water instead tells that channelling can cause not only pulling to survey to be made into that power is low, flushing valve card, ball-and-seat ball seat are not closed completely, formation sand production shortens the separate injection tubing string period of validity and workover treatment, but also damage stratum energy, reduce flood effectiveness, directly affect the raising of oil field oil recovery economic benefit.
Summary of the invention
The purpose of this utility model is to provide a kind of petroleum industry water injection string to prevent the anti-channelling separate injection tubing string of telling of water filling interval with three grades four sections, inject water preventing that the anti-channelling separate injection tubing string of telling of interval can only way flow, can effectively avoid injecting water in the anti-generation of telling the channelling phenomenon of interval; Pulling is surveyed and is made into the power height, and does not need well-flushing, can alleviate working strength of workers; Tubing string for heavy oil wells, sand output well, profile control after dispensing well, water injection pressure is lower and interval pressure reduction is bigger middle shallow well compliance strong, tubing string dispensing period of validity is long.
The purpose of this utility model is achieved in that and comprises that the one-level counnter attack tells eccentric injection mandrel 1, one-level can not anti-flushing well compression packer 2, eccentric injection mandrel 3 is told in the secondary counnter attack, secondary can not anti-flushing well compression packer 4, eccentric injection mandrel 5 is told in three grades of counnter attacks, three grades can not anti-flushing well compression packer 6, support waterpower slips 7, eccentric injection mandrel 8 is told in the level Four counnter attack, divide oil fuel tube 9, plug 10, sleeve pipe 11, the first water filling interval 13, the second water filling interval 14, the 3rd water filling interval 15, the 4th water filling interval 16, one-level can not place between the first water filling interval 13 and the second water filling interval 14 by anti-flushing well compression packer 2, one-level can not anti-flushing well compression packer 2 places the one-level counnter attack to tell eccentric injection mandrel 1 and anti-secondary is counter tells between the eccentric injection mandrel 3 simultaneously, secondary can not place between the second water filling interval 14 and the 3rd water filling interval 15 by anti-flushing well compression packer 4, secondary can not anti-flushing well compression packer 4 places the secondary counnter attack to tell eccentric injection mandrel 3 and three grades of counnter attacks are told between the eccentric injection mandrel 5 simultaneously, three grades can not place between the 3rd water filling interval 15 and the 4th water filling interval 16 by anti-flushing well compression packer 6, three grades can not anti-flushing well compression packer 6 the bottom be equipped with and support waterpower slips 7, the level Four counnter attack is told eccentric injection mandrel 8 and is placed between support waterpower slips 7 and the plug 10, divides the bottommost of oil fuel tube 9 that plug 10 is housed.
Divide and the one-level counnter attack to be housed respectively in the oil fuel tube 9 to tell eccentric injection mandrel 1, secondary counnter attack and tell that eccentric injection mandrel 3, three grades of counnter attacks are told eccentric injection mandrel 5, eccentric injection mandrel 8 is told in the level Four counnter attack.
Advantage of the present utility model is: 1. inject water preventing that the anti-channelling separate injection tubing string of telling of interval can only way flow, can effectively avoid injecting water in the anti-generation of telling the channelling phenomenon of interval; 2. pulling is surveyed and is made into the power height, and does not need well-flushing, can alleviate working strength of workers; Tubing string for heavy oil wells, sand output well, profile control after dispensing well, water injection pressure is lower and interval pressure reduction is bigger middle shallow well compliance strong, tubing string dispensing period of validity is long.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in drawings, one-level can not anti-flushing well compression packer 2 not only between the first water filling interval 13 and the second water filling interval 14, and tell eccentric injection mandrel 1 and the secondary counnter attack is told between the eccentric injection mandrel 3 in the one-level counnter attack, the one-level counnter attack is told eccentric injection mandrel 1 and is given 13 water fillings of the first water filling interval, the secondary counnter attack is told eccentric injection mandrel 3 and is given 14 water fillings of the second water filling interval, secondary can not anti-flushing well compression packer 4 not only between the second water filling interval 14 and the 3rd water filling interval 15, and tell eccentric injection mandrel 3 and three grades of counnter attacks are told between the eccentric injection mandrel 5 in the secondary counnter attack, three grades of counnter attacks are told eccentric injection mandrel 5 and are given 15 water fillings of the 3rd water filling interval, level Four can not anti-flushing well compression packer 6 between the 3rd water filling interval 15 and the 4th water filling interval 16, support waterpower slips 7 three grades can not anti-flushing well compression packer 6 the bottom, the level Four counnter attack is told eccentric injection mandrel 8 and is being supported between waterpower slips 7 and the plug 10, the level Four counnter attack is told eccentric injection mandrel 8 and is given 16 water fillings of the 4th water filling interval, and plug 10 is positioned at the bottommost of branch oil fuel tube 9.
Can be as required one-level can not anti-flushing well compression packer 2 top add oil pipe telescopic compensator, the two-way anchor of well.Used eccentric injection mandrel is counnter attack and tells eccentric injection mandrel, used packer is can not the anti-flushing well compression packer, during normal water filling, water filling can only be told eccentric injection mandrel 1 from the one-level counnter attack of minute oil fuel tube 9 through tubing string, eccentric injection mandrel 3 is told in the secondary counnter attack, eccentric injection mandrel 5 is told in three grades of counnter attacks, the level Four counnter attack is told eccentric injection mandrel 8 and is flowed into the annular space that divides oil fuel tube 9 and sleeve pipe 11 to form, the annular space that is formed by minute oil fuel tube 9 and sleeve pipe 11 enters the first water filling interval 13 again, the second water filling interval 14, the 3rd water filling interval 15, the 4th water filling interval 16, in case termination of pumping stops annotating, eccentric injection mandrel 1 is told in the one-level counnter attack, eccentric injection mandrel 3 is told in the secondary counnter attack, eccentric injection mandrel 5 is told in three grades of counnter attacks, eccentric injection mandrel 8 is told in the level Four counnter attack, plug 10 can effectively stop the branch oil fuel tube 9 and the water of the annular space of sleeve pipe 11 to enter branch oil fuel tube 9, prevent the first water filling interval 13, the second water filling interval 14, the 3rd water filling interval 15, the 4th water filling interval 16 counter telling, one-level can not anti-flushing well compression packer 2, secondary can not anti-flushing well compression packer 4, three grades can not the anti-flushing well compression packer 6 owing to there is not the well-flushing passage, the sealing mechanism of packer can be at the first water filling interval 13, the second water filling interval 14, the 3rd water filling interval 15, play effective packing effect between the 4th water filling interval 16, prevent the first water filling interval 13, the second water filling interval 14, the 3rd water filling interval 15, the 4th water filling interval 16 is counter tells channelling.
Claims (1)
1. three grades four sections prevent the anti-channelling separate injection tubing string of telling of water filling interval, comprise that the one-level counnter attack tells eccentric injection mandrel (1), one-level can not anti-flushing well compression packer (2), eccentric injection mandrel (3) is told in the secondary counnter attack, secondary can not anti-flushing well compression packer (4), eccentric injection mandrel (5) is told in three grades of counnter attacks, three grades can not anti-flushing well compression packer (6), support waterpower slips (7), eccentric injection mandrel (8) is told in the level Four counnter attack, divide oil fuel tube (9), plug (10), sleeve pipe (11), the first water filling interval (13), the second water filling interval (14), the 3rd water filling interval (15), the 4th water filling interval (16), it is characterized in that: one-level can not place between the first water filling interval (13) and the second water filling interval (14) by anti-flushing well compression packer (2), and one-level can not anti-flushing well compression packer (2) places the one-level counnter attack to tell eccentric injection mandrel (1) and the secondary counnter attack is told between the eccentric injection mandrel (3) simultaneously; Secondary can not place between the second water filling interval (14) and the 3rd water filling interval (15) by anti-flushing well compression packer (4), secondary can not anti-flushing well compression packer (4) places the secondary counnter attack to tell eccentric injection mandrel (3) and three grades of counnter attacks are told between the eccentric injection mandrel (5) simultaneously, three grades can not place between the 3rd water filling interval (15) and the 4th water filling interval (16) by anti-flushing well compression packer (6), three grades can not anti-flushing well compression packer (6) the bottom be equipped with and support waterpower slips (7), counnter attack is told eccentric injection mandrel (8) and is placed between support waterpower slips (7) and the plug (10), divides the bottommost of oil fuel tube (9) that plug (10) is housed; Divide and the one-level counnter attack to be housed respectively in the oil fuel tube (9) to tell eccentric injection mandrel (1), secondary counnter attack and tell that eccentric injection mandrel (3), three grades of counnter attacks are told eccentric injection mandrel (5), eccentric injection mandrel (8) is told in the level Four counnter attack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201497286U CN201090197Y (en) | 2007-06-20 | 2007-06-20 | Three-stage four-section separate injection string for preventing water injection layer section from reversely discharging and channeling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201497286U CN201090197Y (en) | 2007-06-20 | 2007-06-20 | Three-stage four-section separate injection string for preventing water injection layer section from reversely discharging and channeling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090197Y true CN201090197Y (en) | 2008-07-23 |
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ID=39861957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201497286U Expired - Lifetime CN201090197Y (en) | 2007-06-20 | 2007-06-20 | Three-stage four-section separate injection string for preventing water injection layer section from reversely discharging and channeling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090197Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305054A (en) * | 2011-09-20 | 2012-01-04 | 武汉理工大学 | Underground separated layer water injection control system based on RFID (radio frequency identification device) |
| CN101498211B (en) * | 2009-02-26 | 2013-05-15 | 中国石油化工股份有限公司 | Method for water distribution by sound wave remote control and the matched intelligent water distributor |
| CN106321035A (en) * | 2016-10-09 | 2017-01-11 | 中国石油化工股份有限公司 | Full-shaft flowback-preventing separated layer water injection tubular column |
-
2007
- 2007-06-20 CN CNU2007201497286U patent/CN201090197Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498211B (en) * | 2009-02-26 | 2013-05-15 | 中国石油化工股份有限公司 | Method for water distribution by sound wave remote control and the matched intelligent water distributor |
| CN102305054A (en) * | 2011-09-20 | 2012-01-04 | 武汉理工大学 | Underground separated layer water injection control system based on RFID (radio frequency identification device) |
| CN102305054B (en) * | 2011-09-20 | 2014-07-02 | 武汉理工大学 | Underground separated layer water injection control system based on RFID (radio frequency identification device) |
| CN106321035A (en) * | 2016-10-09 | 2017-01-11 | 中国石油化工股份有限公司 | Full-shaft flowback-preventing separated layer water injection tubular column |
| CN106321035B (en) * | 2016-10-09 | 2021-04-23 | 中国石油化工股份有限公司 | Full well bore is prevented returning and is told layering water injection tubular column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080723 |