CN2479206Y - Branch oil production downhole pipe string - Google Patents
Branch oil production downhole pipe string Download PDFInfo
- Publication number
- CN2479206Y CN2479206Y CN 01220364 CN01220364U CN2479206Y CN 2479206 Y CN2479206 Y CN 2479206Y CN 01220364 CN01220364 CN 01220364 CN 01220364 U CN01220364 U CN 01220364U CN 2479206 Y CN2479206 Y CN 2479206Y
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- CN
- China
- Prior art keywords
- packer
- shunting
- branch
- utility
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a private down-hole pipe column used for oil production in multi-bore wells and branch wells. The utility model is composed of an anchor packer 1, an anchor packer 2, a diverting filler 3, a sitting filler 4, a single-pass valve 5, a screen pipe 6, a screen pipe 7, a blanking plug 8 or a diverting mouth 9. The down-hole pipe column has the advantages of reasonable design, reliable working, and simple construction and operation. With one beating pressing, the operation of the deactivation, and suspension, sealing and the like of the filler can be finished simultaneously. The pipe column can be used to realize combined production and high grading of multi-bore wells and branch wells. The utility model has good economical effectiveness and practicability.
Description
The utility model relates to a kind of special-purpose down-hole string that is used for multihole well, Multilateral Wells oil recovery.
It is that the oil field is on-the-spot for improving a kind of new technology that oil recovery factor adopted in recent years that multihole well, Multilateral Wells are recovered the oil.Multihole well, Multilateral Wells are different from conventional oil well, are bore a plurality of branches to the crude oil abundance zone in main hole.Because casing programme, exploitation oil reservoir all have than big-difference with conventional oil well, if adopt existing conventional oil well down-hole string, then can't reach the requirement that best exploitation effect was exploited and realized to selectivity, are unfavorable for the raising of oil mining effect and recovery ratio.
The purpose of this utility model is to provide a kind of both can carry out multihole well, Multilateral Wells is closed and adopted, and can realize that again the selectivity branch adopts, and branch's producing well lower tubular column of easy construction.
The utility model is to realize like this.This kind down-hole string is made up of anchoring packer, oil pipe, shunting packer, base sealed packer, blanking plug, shunting nozzle, ball-and-seat, screen casing and plug, its structure, assembling feature are as follows: oil pipe upper end is assembled with anchoring packer, the middle part is assembled with shunting packer and base sealed packer respectively, ball seat is equipped with in the lower end, be connected to screen casing under the oil pipe, plug is equipped with in the screen casing bottom, drops into blanking plug in the oil pipe at device shunting packer position, is replaced into shunting nozzle during production.Above-mentioned tubing string integral body is anchored in the oil well main hole by anchoring packer, and the seat sealed packer carries out packing between each branch, is provided with special oil flow channel at shunting packer place and is communicated with each branch.This tubing string during tubing string seat envelope, is lowered to blanking plug at shunting packer position with precalculated position under the oil pipe lower going-into-well, each oil flow channel of shutoff, and tubing string inside builds the pressure, and makes each packer set, and when pressure raise again, ball seat was struck off, and fell in the screen casing of bottom.During production, blanking plug is taken out, be lowered to special-purpose shunting nozzle, be communicated with, the crude stream in each branch is gone in the main hole, pump to ground with the oil well pump on tubing string top with each branch at the blanking plug place.When carrying out the selectivity exploitation, only need to change dissimilar shunting nozzles and get final product.
The utility model is reasonable in design, novel structure, and constructing operation is easy, and reliable operation is once suppressed and can be finished operations such as packer release, suspension, sealing simultaneously.Utilize this tubing string can realize that closing of multihole well, Multilateral Wells adopted and the selectivity exploitation, have good economy and practicality.
Structural representation when Fig. 1, Fig. 2 are respectively the utility model seat envelope and ordinary production.Among the figure, label " 11 " is the oil well main hole, and " 10 " are branch.
Below in conjunction with accompanying drawing enforcement of the present utility model is described further.
As shown in the figure, the utility model is made up of anchoring packer 1, oil pipe 2, shunting packer 3, base sealed packer 4, ball-and-seat 5, screen casing 6, plug 7, blanking plug 8 or shunting nozzle 9.Wherein, anchoring packer 1 adopts the dual-grip hydraulic compression type packer, and seal respectively has one group of slips in the position up and down, and top is anchor watt, and the bottom is an one-way slip.Shunting packer 3, base sealed packer 4 adopt general hydraulic compression type packer respectively.Shunting nozzle 9 profiles, structure are similar to blanking plug, and cross section is provided with 3 and also oil nozzle is housed respectively in order to the vertical passage that is communicated with 3 branches in it, and wherein one is long and the other is short for two wing passages, is 90 ° of foldings respectively and turns, and center-aisle is a straight hole.
Claims (2)
1, a kind of branch producing well lower tubular column, form by oil pipe (2), screen casing (6), plug (7), it is characterized in that, oil pipe (2) upper end is assembled with anchoring packer (1), and the middle part is assembled with shunting packer (3) and base sealed packer (4) respectively, and ball-and-seat (5) is equipped with in the lower end, be connected to screen casing (6) under the oil pipe, plug (7) is equipped with in the screen casing bottom, drops into blanking plug (8) in the oil pipe at device shunting packer (3) position, is replaced into shunting nozzle (9) during production.
2, branch according to claim 1 producing well lower tubular column is characterized in that, shunting nozzle (9) profile, structure are similar to blanking plug, cross section is provided with 3 vertical passages and oil nozzle is housed respectively in it, wherein one is long and the other is short for two wing passages, is 90 ° of foldings respectively and turns, and center-aisle is a straight hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01220364 CN2479206Y (en) | 2001-04-29 | 2001-04-29 | Branch oil production downhole pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01220364 CN2479206Y (en) | 2001-04-29 | 2001-04-29 | Branch oil production downhole pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2479206Y true CN2479206Y (en) | 2002-02-27 |
Family
ID=33637980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01220364 Expired - Lifetime CN2479206Y (en) | 2001-04-29 | 2001-04-29 | Branch oil production downhole pipe string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2479206Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956544A (en) * | 2009-07-21 | 2011-01-26 | 上海石油天然气有限公司 | Method for oil extraction in multi-bottom and multi-branch well by artesian injection |
| CN104453773A (en) * | 2014-11-07 | 2015-03-25 | 中国石油天然气股份有限公司 | Multilateral well bore blockage tool and blockage method |
| CN104895535A (en) * | 2015-05-12 | 2015-09-09 | 中国石油天然气股份有限公司 | Buried hill oil pool branch well gas cap energy replenishment process string |
| CN104948141A (en) * | 2015-06-05 | 2015-09-30 | 中国石油天然气股份有限公司 | Production injection device in same well |
-
2001
- 2001-04-29 CN CN 01220364 patent/CN2479206Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956544A (en) * | 2009-07-21 | 2011-01-26 | 上海石油天然气有限公司 | Method for oil extraction in multi-bottom and multi-branch well by artesian injection |
| CN101956544B (en) * | 2009-07-21 | 2013-01-02 | 上海石油天然气有限公司 | Method for oil extraction in multi-bottom and multi-branch well by artesian injection |
| CN104453773A (en) * | 2014-11-07 | 2015-03-25 | 中国石油天然气股份有限公司 | Multilateral well bore blockage tool and blockage method |
| CN104453773B (en) * | 2014-11-07 | 2017-01-11 | 中国石油天然气股份有限公司 | Multilateral well bore blockage tool and blockage method |
| CN104895535A (en) * | 2015-05-12 | 2015-09-09 | 中国石油天然气股份有限公司 | Buried hill oil pool branch well gas cap energy replenishment process string |
| CN104895535B (en) * | 2015-05-12 | 2017-07-07 | 中国石油天然气股份有限公司 | Buried hill oil pool Multilateral Wells pneumatic jack complementary energy process pipe string |
| CN104948141A (en) * | 2015-06-05 | 2015-09-30 | 中国石油天然气股份有限公司 | Production injection device in same well |
| CN104948141B (en) * | 2015-06-05 | 2017-12-05 | 中国石油天然气股份有限公司 | A kind of same well production-injection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110429 Granted publication date: 20020227 |