CN204225804U - A kind of novel oil production well lost circulation prevention Flushing tubular column - Google Patents
A kind of novel oil production well lost circulation prevention Flushing tubular column Download PDFInfo
- Publication number
- CN204225804U CN204225804U CN201420697561.7U CN201420697561U CN204225804U CN 204225804 U CN204225804 U CN 204225804U CN 201420697561 U CN201420697561 U CN 201420697561U CN 204225804 U CN204225804 U CN 204225804U
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- seat
- ball
- packer
- screen casing
- pump
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Abstract
The utility model relates to a kind of novel oil production well lost circulation prevention Flushing tubular column, comprise sleeve pipe, pump, screen casing, oil pipe, packer, ball-and-seat, cutting seam sieve tube, plug, it is characterized in that being provided with oil pipe in sleeve pipe, the top of oil pipe is provided with pump, be greater than 500m place with the distance of pump and be provided with screen casing, the below of screen casing is provided with packer, and the below of packer is connected with ball-and-seat, screen casing, packer and ball-and-seat three are interconnected, and are provided with cutting seam sieve tube and plug below ball-and-seat.The beneficial effects of the utility model are; the utility model combination is simple; cost is low; solve for the serious well of formation leakage, flushing fluid easily enters stratum and causes the problems such as formation blockage, adopts this design of casing string; in washing well process, flushing fluid can not enter stratum; thus reaching formation protection object, in pit shaft, the foreign material such as fouling, wax deposition thoroughly wash out by high flow rate washover, can not leave in tubing string.
Description
Technical field
The utility model relates to petroleum works field, specifically a kind of novel oil production well lost circulation prevention Flushing tubular column.
Background technology
At present formation miss serious producing well carry out well-flushing time, flushing fluid easily enters stratum and causes formation blockage, and in pit shaft, the foreign material such as fouling, wax deposition thoroughly cannot be washed out by well-flushing, leave in tubing string, cleans not thorough.
Summary of the invention
Technical problem to be solved in the utility model overcomes the deficiencies in the prior art, a kind of novel oil production well lost circulation prevention Flushing tubular column is provided, the utility model solves the technical scheme that its technical problem adopts: structure of the present utility model comprises sleeve pipe, pump, screen casing, oil pipe, packer, ball-and-seat, cutting seam sieve tube, plug, it is characterized in that being provided with oil pipe in sleeve pipe, the top of oil pipe is provided with pump, be greater than 500m place with the distance of pump and be provided with screen casing, the below of screen casing is provided with packer, the below of packer is connected with ball-and-seat, screen casing, packer and ball-and-seat three are interconnected, prevent bleed stratum and well-flushing rear impurity of flushing fluid from not leaving in tubing string to reach, cutting seam sieve tube and plug is provided with below ball-and-seat.Operating principle: during well-flushing, flushing fluid flows in screen casing from sleeve pipe, directly entered in oil pipe by screen casing, because the unidirectional of ball-and-seat passes through characteristic, flushing fluid can not flow in the tubing string of below ball-and-seat, thus ensure that flushing fluid does not enter stratum, now flushing fluid is by the power of pump, makes flushing fluid drain into ground from oil pipe is counter, reaches well-flushing object, simultaneously because packer and ball-and-seat are apart near, do not have when ensure that well-flushing in the tubing string of contamination precipitation more than ball-and-seat.
The beneficial effects of the utility model are; the utility model combination is simple; cost is low; solve for the serious well of formation leakage, flushing fluid easily enters stratum and causes the problems such as formation blockage, adopts this design of casing string; in washing well process, flushing fluid can not enter stratum; thus reaching formation protection object, in pit shaft, the foreign material such as fouling, wax deposition thoroughly wash out by high flow rate washover, can not leave in tubing string.
Accompanying drawing explanation
Fig. 1: the utility model example structure schematic diagram.
In figure: sleeve pipe 1, pump 2, screen casing 3, oil pipe 4, packer 5, ball-and-seat 6, cutting seam sieve tube 7, plug 8.
Detailed description of the invention
Illustrate with reference to accompanying drawing and following concrete detailed description is done to the utility model.As shown in drawings, structure of the present utility model comprises sleeve pipe 1, pump 2, screen casing 3, oil pipe 4, packer 5, ball-and-seat 6, cutting seam sieve tube 7, plug 8, it is characterized in that being provided with oil pipe 4 in sleeve pipe 1, the top of oil pipe 4 is provided with pump 2, be greater than 500m place with the distance of pump 2 and be provided with screen casing 3, the below of screen casing 3 is provided with packer 5, the below of packer 5 is connected with ball-and-seat 6, screen casing 3, packer 5 and ball-and-seat 6 three are interconnected, prevent bleed stratum and well-flushing rear impurity of flushing fluid from not leaving in tubing string to reach, cutting seam sieve tube 7 and plug 8 is provided with below ball-and-seat.Operating principle: during well-flushing, flushing fluid flows in screen casing 3 from sleeve pipe 1, directly enter in oil pipe 4 by screen casing 3, because the unidirectional of ball-and-seat 6 passes through characteristic, flushing fluid can not flow in the tubing string of ball-and-seat less than 6, thus ensure that flushing fluid does not enter stratum, now flushing fluid is by the power of pump 2, makes flushing fluid drain into ground from oil pipe 4 is counter, reaches well-flushing object, simultaneously because packer 5 and ball-and-seat 6 are apart from closely, do not have contamination precipitation when ensure that well-flushing in the tubing string of ball-and-seat more than 6.
Embodiment recited above is only be described preferred embodiment of the present utility model; not design of the present utility model and scope are limited; under the prerequisite not departing from the utility model design concept; the various modification that in this area, common engineers and technicians make the technical solution of the utility model and improvement; protection domain of the present utility model all should be fallen into; the technology contents of the utility model request protection, all records in detail in the claims.
Claims (1)
1. a novel oil production well lost circulation prevention Flushing tubular column, comprise sleeve pipe (1), pump (2), screen casing (3), oil pipe (4), packer (5), ball-and-seat (6), cutting seam sieve tube (7), plug (8), it is characterized in that being provided with oil pipe (4) in sleeve pipe (1), the top of oil pipe (4) is provided with pump (2), be greater than 500m place with the distance of pump (2) and be provided with screen casing (3), the below of screen casing (3) is provided with packer (5), the below of packer (5) is connected with ball-and-seat (6), screen casing (3), packer (5) and ball-and-seat (6) three are interconnected, ball-and-seat (6) below is provided with cutting seam sieve tube (7) and plug (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697561.7U CN204225804U (en) | 2014-11-13 | 2014-11-13 | A kind of novel oil production well lost circulation prevention Flushing tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697561.7U CN204225804U (en) | 2014-11-13 | 2014-11-13 | A kind of novel oil production well lost circulation prevention Flushing tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204225804U true CN204225804U (en) | 2015-03-25 |
Family
ID=52923913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420697561.7U Expired - Fee Related CN204225804U (en) | 2014-11-13 | 2014-11-13 | A kind of novel oil production well lost circulation prevention Flushing tubular column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204225804U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975824A (en) * | 2015-07-06 | 2015-10-14 | 中国石油化工股份有限公司 | Oil recovery method for casing leaked well and dual-tubing oil recovery string adopted therein |
| CN106593349A (en) * | 2016-12-28 | 2017-04-26 | 中国石油天然气股份有限公司 | Oil pumping well production well completion tubular column capable of being backwashed for plugging releasing and sand prevention |
| CN108301796A (en) * | 2018-01-31 | 2018-07-20 | 中国石油天然气股份有限公司 | A kind of pitching auxiliary Flushing tubular column |
| CN108386160A (en) * | 2018-01-30 | 2018-08-10 | 中国石油天然气股份有限公司 | The deblocking type sand control pipe structure of screen casing under energy flushing pump |
| CN108533217A (en) * | 2018-02-28 | 2018-09-14 | 延长油田股份有限公司志丹采油厂 | A kind of hot-washing wax remover well washing apparatus and its technique |
-
2014
- 2014-11-13 CN CN201420697561.7U patent/CN204225804U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975824A (en) * | 2015-07-06 | 2015-10-14 | 中国石油化工股份有限公司 | Oil recovery method for casing leaked well and dual-tubing oil recovery string adopted therein |
| CN106593349A (en) * | 2016-12-28 | 2017-04-26 | 中国石油天然气股份有限公司 | Oil pumping well production well completion tubular column capable of being backwashed for plugging releasing and sand prevention |
| CN106593349B (en) * | 2016-12-28 | 2019-05-07 | 中国石油天然气股份有限公司 | A kind of rod-pumped well productive completion tubing string of back-washable de-plugging sand control |
| CN108386160A (en) * | 2018-01-30 | 2018-08-10 | 中国石油天然气股份有限公司 | The deblocking type sand control pipe structure of screen casing under energy flushing pump |
| CN108386160B (en) * | 2018-01-30 | 2019-12-10 | 中国石油天然气股份有限公司 | Blockage removal type sand prevention pipe column structure capable of flushing lower sieve pipe of pump |
| CN108301796A (en) * | 2018-01-31 | 2018-07-20 | 中国石油天然气股份有限公司 | A kind of pitching auxiliary Flushing tubular column |
| CN108533217A (en) * | 2018-02-28 | 2018-09-14 | 延长油田股份有限公司志丹采油厂 | A kind of hot-washing wax remover well washing apparatus and its technique |
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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: 20150325 Termination date: 20151113 |
|
| EXPY | Termination of patent right or utility model |