CN202531133U - Oil well seals intermediate layer and adopts two water shutoff technology tubular columns - Google Patents
Oil well seals intermediate layer and adopts two water shutoff technology tubular columns Download PDFInfo
- Publication number
- CN202531133U CN202531133U CN2012201400510U CN201220140051U CN202531133U CN 202531133 U CN202531133 U CN 202531133U CN 2012201400510 U CN2012201400510 U CN 2012201400510U CN 201220140051 U CN201220140051 U CN 201220140051U CN 202531133 U CN202531133 U CN 202531133U
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- Prior art keywords
- pipe
- central tube
- water
- oil
- wedge
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- Expired - Fee Related
Links
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 239000003129 oil well Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 18
- 210000002445 nipple Anatomy 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 238000011010 flushing procedure Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 241000935974 Paralichthys dentatus Species 0.000 description 1
- 241000242541 Trematoda Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses an oil well seals intermediate level and adopts two water shutoff technology tubular columns is that do not influence later stage lower floor well-flushing and liquid level test, and can salvage the purpose of fetching back when necessary and design for realizing the tubular column when plugging up middle part water-out layer section, and the tubular column mainly comprises plug, hydraulic anchor, oil pipe nipple joint, wedge expander, branch pipe and oil pipe connection. The wedge-shaped expander is provided with a central tube with a liquid flow port, a rubber cylinder is sleeved outside the central tube, and two ends of the central tube are connected with press rings. The corrugated pipe expanding liner pipe is sleeved on the process pipe column, and a rubber sealing ring is sleeved at the necking part of the corrugated pipe. The utility model discloses can be used to the oil well that both ends were adopted in middle part layer interval play water, shutoff intermediate level, can avoid using the short and big problem of danger of mechanical water shutoff validity period, can avoid using again chemical water shutoff to the pollution of oil reservoir and the irrecoverable injury to the oil reservoir.
Description
Technical field
The utility model relates to a kind of oil well envelope intermediate layer and adopts two water-plugging technology tubing string, belongs to the exploitation of oil-gas field technical field.
Background technology
In present oilfield development process, modal producing well water-plugging technology can divide mechanical water blockoff and chemical water shutoff.Water pack off for the interval water outlet of oil well middle part adopts the middle whole tubing string of company's pump of adopting two of Y221-114+Y111-114 packer packing basically; This tubing string construction is simple relatively, and lack instant effect duty cycle, and relative costs is low; But the useful effect phase is short; Production risk after the construction is big, in case pit shaft shakes out, fouling or cover become, can produce the risk that packer can not blocked.Chemical water shutoff is through clamp-oning stifled agent packing water exit interval, though the useful effect phase is long, operating cost is high, is prone to polluted reservoir, in case oil water relation changes, can not produce again behind the effective response for water flood, causes the irrecoverable property injury of oil reservoir.
Summary of the invention
The purpose of the utility model is to provide a kind of oil well envelope intermediate layer to adopt two water-plugging technology tubing string, and it does not influence later stage lower floor's well-flushing and liquid level test when blocking the middle part water exit interval, and also the available dedicated fishing tool is fetched in case of necessity.
The concrete technical scheme of the utility model is following:
Two water-plugging technology tubing string is adopted by connecting to form successively with lower component from bottom to top in oil well envelope intermediate layer: plug+hydraulic anchor+tubing nipple+wedge expander+arm+wedge expander+oil pipe.
Be provided with central tube in the wedge type expander, the central tube two ends connect upper press ring and following pressure ring respectively, are with packing element on the central tube, and the tube wall of the corresponding packing element of central tube is provided with the flow mouth.
Corrugated tube shape expanding liner sleeve is on process pipe string, and its bellows bottleneck is with rubber seal.
The utility model can be used for middle part interval water outlet, the oil well at two is adopted in the shutoff intermediate layer, can avoid the use of the problem that the water pack off period of validity is short and have a big risk, and can avoid the use of chemical water shutoff again to the pollution of oil reservoir with to the irrecoverable property injury of oil reservoir.
Description of drawings
Fig. 1 adopts two water-plugging technology tubular column structure sketch map for oil well envelope intermediate layer;
Fig. 2 adopts two water-plugging technology tubing string for oil well envelope intermediate layer and accomplishes sketch map behind the water blockoff;
Fig. 3 is a wedge expander structural representation in the process pipe string;
Fig. 4 adopts two water-plugging technology tubing string process schematic representation for oil well envelope intermediate layer.
The specific embodiment
Embodiment with reference to Fig. 1 and 4 pairs of the utility model further specifies:
Embodiment:
Two water-plugging technology tubing string is adopted by connecting to form successively with lower component from bottom to top in oil well envelope intermediate layer: the tubing nipple 3+ wedge expander 4+ arm 6+ wedge expander 4+ oil pipe 8 of plug 1+ hydraulic anchor 2+ band expansion coupling.
Hydraulic anchor 2 adopts KDB-114 baffle-type hydraulic anchor 2, presses when being higher than casing pressure 1.5～2MPa in the oil pipe 8, and anchor fluke anchor 2 fixes on the sleeve pipe.
Be provided with central tube 44 in the wedge type expander 4, central tube 44 two ends connect upper press ring 41 and following pressure ring 43 respectively, are with packing element 42 on the central tube 44, and the tube wall of central tube 44 corresponding packing elements 42 is provided with flow mouth 45.Wedge type expander 4 works the oil pipe effect of setting upright on the one hand, slackens up resistance on the one hand, and under the fluid power effect, fluid gets into packing element 42 through central tube 44 and flow mouth 45, makes its expanded radially expansion.
Corrugated tube shape expanding bushing pipe 7 is enclosed within on the process pipe string, and its bellows bottleneck is with rubber seal 5.
The utility model process pipe string operating principle is following:
During work, helical corrugation shape plastically deformable expanding bushing pipe 7, wedge type expander 45, rubber seal 5 and hydraulic anchor 2 are connected on the tubing string, wherein rubber seal 5 is enclosed within bushing pipe 7 bottlenecks; Configure tubing string by the water-yielding stratum position, the postpone that puts in place under the tubing string is suppressed with the cementing truck well head; Build the pressure in the pipe; Hydraulic anchor 2 anchor flukes are protruding under the effect of fluid pressure, and the chucking internal surface of sleeve pipe is anchored on expanding bushing pipe 7 lower ends on the sleeve pipe; Fluid power gets into packing element 42 inner chambers through wedge expander central tube liquid flow hole 45 simultaneously, forces its radial dilatation until being close to internal surface of sleeve pipe.Draw wedge expander 4 on building the pressure; Make itself and expanding bushing pipe 7 take place to relatively move up and down, when moving to rubber seal 5 positions, utilize the interference principle; Wedge expander 4 radial dilatation; Make the rubber seal 5 between expanding bushing pipe 7 and casing wall closely rely on the barrel, form reliable fluid-tight and block fluid, reach the purpose of packing water-yielding stratum.Bleed off the pressure in the oil pipe 8, wedge expander packing element 42 retractions propose tubing string.
Claims (1)
1. two water-plugging technology tubing string is adopted in an oil well envelope intermediate layer, it is characterized in that:
It is by connecting to form successively from bottom to top with lower component: plug (1)+hydraulic anchor (2)+tubing nipple (3)+wedge expander (4)+arm (6)+wedge expander (4)+oil pipe (8);
Be provided with central tube (44) in the wedge type expander (4), central tube (44) two ends connect upper press ring (41) and following pressure ring (43) respectively, are with packing element (42) on the central tube (44), and the tube wall of the corresponding packing element of central tube (44) (42) is provided with flow mouth (45);
Corrugated tube shape expanding bushing pipe (7) is enclosed within on the water-plugging technology tubing string, and its bellows bottleneck is with rubber seal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201400510U CN202531133U (en) | 2012-04-05 | 2012-04-05 | Oil well seals intermediate layer and adopts two water shutoff technology tubular columns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201400510U CN202531133U (en) | 2012-04-05 | 2012-04-05 | Oil well seals intermediate layer and adopts two water shutoff technology tubular columns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531133U true CN202531133U (en) | 2012-11-14 |
Family
ID=47132323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201400510U Expired - Fee Related CN202531133U (en) | 2012-04-05 | 2012-04-05 | Oil well seals intermediate layer and adopts two water shutoff technology tubular columns |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202531133U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233696A (en) * | 2013-04-28 | 2013-08-07 | 成都科盛石油科技有限公司 | Two-section repairing mechanism for repairing well wall |
| CN103993853A (en) * | 2014-05-08 | 2014-08-20 | 刘军 | Packer for geophysical prospecting well |
| CN110566138A (en) * | 2019-10-21 | 2019-12-13 | 潍坊市宇宏石油机械有限公司 | Self-adaptive casing centralizer and centralizing method |
| CN116220639A (en) * | 2021-12-06 | 2023-06-06 | 中国石油天然气股份有限公司 | Suspension anchoring channel device and high-efficiency sealing suspension type steam injection process pipe column |
-
2012
- 2012-04-05 CN CN2012201400510U patent/CN202531133U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233696A (en) * | 2013-04-28 | 2013-08-07 | 成都科盛石油科技有限公司 | Two-section repairing mechanism for repairing well wall |
| CN103993853A (en) * | 2014-05-08 | 2014-08-20 | 刘军 | Packer for geophysical prospecting well |
| CN110566138A (en) * | 2019-10-21 | 2019-12-13 | 潍坊市宇宏石油机械有限公司 | Self-adaptive casing centralizer and centralizing method |
| CN116220639A (en) * | 2021-12-06 | 2023-06-06 | 中国石油天然气股份有限公司 | Suspension anchoring channel device and high-efficiency sealing suspension type steam injection process pipe column |
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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: 20121114 Termination date: 20210405 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |