CN201738822U - String for upper horizontal well cementation and lower screen pipe gravel pack completion - Google Patents
String for upper horizontal well cementation and lower screen pipe gravel pack completion Download PDFInfo
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- CN201738822U CN201738822U CN2010202420495U CN201020242049U CN201738822U CN 201738822 U CN201738822 U CN 201738822U CN 2010202420495 U CN2010202420495 U CN 2010202420495U CN 201020242049 U CN201020242049 U CN 201020242049U CN 201738822 U CN201738822 U CN 201738822U
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- tubing string
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Abstract
The utility model relates to a string for upper horizontal well cementation and lower screen pipe gravel pack completion. In order to solve the defects of conventional horizontal well screen pipe completion, i.e. easy screen pipe blockage and piercing leakage, which lead to the failure of screen pipes and go against the exploitation and long-term production of oil and gas wells, the string comprises a completion string and a pickling and packing string, the completion string connected with the lower end of a casing comprises a sizing collar, a casing nipple, external packers, a casing, a centralizer, a screen pipe, a bottom packing tool, a screen pipe and a guide shoe which are sequentially firmly connected, the screen pipes are positioned in a horizontal well section, and the centralizer mounted on the periphery of the screen pipe of the completion string is a roller centralizer; the pickling and packing string is mounted in the completion string; an internal packing tool on the lower end of the pickling and packing string is inserted into the bottom packing tool of the completion string; and the pickling and packing string is firmly connected with the lower end of an oil pipe through an union. The utility model can enhance the horizontal section-pickling effect and the gravel-packing effect, prevent formation collapse and formation sand production, prevent the failure of the screen pipes, prolong the service life of an oil well and increase the recovery ratio.
Description
Affiliated technical field
The utility model relates to a kind of horizontal well completion tubular pile, especially relates to a kind of horizontal well top well cementation lower screen gravel pack completion tubing string.
Background technology
The application level well carries out oil and gas development, has low, effective, the recovery ratio advantages of higher of recovering the oil of integrated cost, along with continually developing of oil field, uses more and more widely.At present, the horizontal well sand control is many based on sieve tube completion, forms screen casing easily and stops up, stings and leak, and causes screen casing to lose efficacy, and is unfavorable for the exploitation and the long-term production of oil gas well.
The utility model content
In order to overcome easy formation screen casing obstruction, the thorn leakage that existing level well sieve tube completion exists, cause screen casing to lose efficacy, be unfavorable for the deficiency of oil gas well development and long-term production, the utility model provides a kind of horizontal well top well cementation lower screen gravel pack completion tubing string.
The technical scheme that its technical problem that solves the utility model adopts is: horizontal well top well cementation lower screen gravel pack completion tubing string, comprise completion tubular column, acid cleaning filling tubing string, the completion tubular column that is connected the sleeve pipe lower end is fixedly connected sequentially by sizing collar, casing nipple, external packer of pipe, sleeve pipe, centralizer, screen casing, bottom filling instrument, screen casing, guide shoe, screen casing is positioned at net horizontal section, and the centralizer of installing on the screen casing cylindrical of completion tubular column is a rolling wheel centralizer; The acid cleaning filling tubing string is installed in the completion tubular column; The inner filling instrument of acid cleaning filling tubing string lower end inserts in the bottom filling instrument of completion tubular column; The acid cleaning filling tubing string is fixedly connected on the lower end of oil pipe by joint; Alternately be fixedly connected with washing pipe and flow plug more than 2 between the last end joint of acid cleaning filling tubing string and the inner filling instrument of lower end.
The beneficial effects of the utility model are to be lowered to rolling wheel centralizer and to realize that screen casing is placed in the middle, the section of improving the standard pickling effect and gravel filling effect, promptly prevent formation collapse and formation sand production, can prevent the screen casing Problem of Failure again, prolong the application life of oil well, improve recovery ratio.
Description of drawings
Fig. 1 is the utility model horizontal well top well cementation lower screen gravel pack completion tubular column structure schematic diagram.
Among the figure: 1. sleeve pipe, 2. sizing collar, 3. casing nipple, 4. external packer of pipe, 5. blind plate, 6. rolling wheel centralizer, 7. screen casing, 8. bottom filling instrument, 9. guide shoe, 10. oil pipe, 11. joints, 12. washing pipe, 13. flow plugs, 14. inner filling instruments, 15. completion tubular columns, 16. acid cleaning filling tubing strings.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described further.
The utility model horizontal well top well cementation lower screen gravel pack completion tubing string comprises completion tubular column 15, acid cleaning filling tubing string 16.The completion tubular column 15 that is connected sleeve pipe 1 lower end is fixedly connected sequentially by sizing collar 2, casing nipple 3, external packer of pipe 4, sleeve pipe 1, centralizer, screen casing 7, bottom filling instrument 8, screen casing 7, guide shoe 9, and the centralizer of installing on screen casing 7 cylindricals of completion tubular column 15 is a rolling wheel centralizer 6; Screen casing 7 is positioned at net horizontal section.Acid cleaning filling tubing string 16 is installed in the completion tubular column 15; The inner filling instrument 14 of acid cleaning filling tubing string 16 lower ends inserts in the bottom filling instrument 8 of completion tubular column 15.
Acid cleaning filling tubing string 16 is fixedly connected on the lower end of oil pipe 10 by joint 11; Alternately be fixedly connected with washing pipe 12 and flow plug 13 between the last end joint 11 of acid cleaning filling tubing string 16 and the inner filling instrument 14 of lower end.Determine the quantity of washing pipe 12 and flow plug 13 according to the length of net horizontal section, the quantity of washing pipe 12 and flow plug 13 is more than 2 usually.
Before using the utility model horizontal well top well cementation lower screen gravel pack completion tubing string enforcement completion practice, respectively completion tubular column 15 and 16 assemblings of acid cleaning filling tubing string are finished earlier, and, carry out completion practice again at the upper end of completion tubular column 15 installation blind plate 5, step is as follows:
1, well cementing operation: the lower end that the completion tubular column 15 that assembling is finished is connected sleeve pipe 1 is lowered in the pit shaft, and the tube sealing external packer 4 that expands is suppressed in direct circulation; Continue to suppress to sizing collar 2 and open, the direct circulation passage is set up, and carries out cementing well; Behind the C.I.P, sizing collar 2 is closed; Use drilling tool that blind plate 5 is drilled through, finish well cementing operation.
2, pickling operation: acid cleaning filling tubing string 16 is lowered in the completion tubular column 15, and the inner filling instrument 14 of acid cleaning filling tubing string 16 lower ends inserts in the bottom filling instrument 8 of completion tubular column 15.Inject pickle at oil pipe and casing annulus, pickle enters the annular space on screen casing 7 and stratum, the annular space on flushing screen casing 7 and stratum by flow plug 13 parts; The annular space of part flushing screen casing 7 and washing pipe 12; Screen casing by guide shoe 10 fronts enters inner filling instrument 14 and washing pipe 12, returns through oil pipe 10, and the pickling operation is finished.
3, gravel pack operation: inject load fluid and gravel by oil pipe 10, load fluid and gravel enter the annular space on screen casing 7 and stratum by the pack hole of inner filling instrument 14 and bottom filling instrument 8, filter sand liquid enters the annular space of screen casing 6 and washing pipe 12 by the space of screen casing 7, and returns by the annular space of sleeve pipe 1 and oil pipe 10.After the sand off, the pack hole of packing tool 8 is closed automatically.
4, return and wash operation: inject to oil pipe 10 and sleeve pipe 1 annular space and return washing lotion and suppress, open the hole flushing of returning of inner filling instrument 14, return washing lotion and enter washing pipe 12, return ground, return and be washed till no back-up sand and return out back proposition acid cleaning filling tubing string 16 by oil pipe 10.
Through above construction, screen casing 6 has been full of gravel pack sand with the annular space on stratum, has finished the well cementation of horizontal well top, lower screen gravel pack completion, can be lowered to the flow string production operation of recovering the oil.
Use the utility model and finish the outer pack gravel of screen casing, layer of gravel stops reservoir sand, screen casing stops manufactured sand, form multistage sand control barrier, promptly can prevent formation collapse and formation sand production, can make oil gas that good permeability is arranged again, prevent that screen casing lost efficacy, prolong the application life of oil well, make full use of the down-hole petroleum resources, improve recovery ratio.
Claims (2)
1. horizontal well top well cementation lower screen gravel pack completion tubing string, comprise completion tubular column, acid cleaning filling tubing string, the completion tubular column that is connected the sleeve pipe lower end is fixedly connected sequentially by sizing collar, casing nipple, external packer of pipe, sleeve pipe, centralizer, screen casing, bottom filling instrument, screen casing, guide shoe, screen casing is positioned at net horizontal section, it is characterized in that: the centralizer of installing on screen casing (7) cylindrical of completion tubular column (15) is rolling wheel centralizer (6); Acid cleaning filling tubing string (16) is installed in the completion tubular column (15); The inner filling instrument (14) of acid cleaning filling tubing string (16) lower end inserts in the bottom filling instrument (8) of completion tubular column (15).
2. according to the described horizontal well of claim 1 top well cementation lower screen gravel pack completion tubing string, it is characterized in that: described acid cleaning filling tubing string (16) is fixedly connected on the lower end of oil pipe (10) by joint (11); Alternately be fixedly connected with washing pipe (12) and flow plug (13) more than 2 between the last end joint (11) of acid cleaning filling tubing string (16) and the inner filling instrument (14) of lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202420495U CN201738822U (en) | 2010-06-21 | 2010-06-21 | String for upper horizontal well cementation and lower screen pipe gravel pack completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202420495U CN201738822U (en) | 2010-06-21 | 2010-06-21 | String for upper horizontal well cementation and lower screen pipe gravel pack completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201738822U true CN201738822U (en) | 2011-02-09 |
Family
ID=43554100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202420495U Expired - Lifetime CN201738822U (en) | 2010-06-21 | 2010-06-21 | String for upper horizontal well cementation and lower screen pipe gravel pack completion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201738822U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075131A (en) * | 2012-12-12 | 2013-05-01 | 山东瑞丰石油技术有限责任公司 | Open hole gravel packing tool and open hole gravel packing method for horizontal well |
| CN103362483A (en) * | 2012-03-31 | 2013-10-23 | 大港油田集团有限责任公司 | Horizontal well gravel-packed string and pressure control valves thereof |
| CN105134141A (en) * | 2015-08-25 | 2015-12-09 | 中国石油天然气股份有限公司 | Process pipe column |
| CN106481321A (en) * | 2016-11-16 | 2017-03-08 | 中国海洋石油总公司 | There is open-hole horizontal well gravel pack tools and the technique of big section mudstone barriers |
| CN107989572A (en) * | 2017-12-12 | 2018-05-04 | 天津大港油田石油工程研究院钻采技术开发有限公司 | A kind of Slim Hole Cementing sand control completion integrated pipe column and construction method |
| CN108533234A (en) * | 2018-06-13 | 2018-09-14 | 邹佳宸 | Horizontal well fixed tubular column sublevel fill stoping and kit |
-
2010
- 2010-06-21 CN CN2010202420495U patent/CN201738822U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362483A (en) * | 2012-03-31 | 2013-10-23 | 大港油田集团有限责任公司 | Horizontal well gravel-packed string and pressure control valves thereof |
| CN103362483B (en) * | 2012-03-31 | 2016-06-15 | 大港油田集团有限责任公司 | SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL tubing string and pressure-control valve thereof |
| CN103075131A (en) * | 2012-12-12 | 2013-05-01 | 山东瑞丰石油技术有限责任公司 | Open hole gravel packing tool and open hole gravel packing method for horizontal well |
| CN103075131B (en) * | 2012-12-12 | 2015-11-25 | 山东瑞丰石油技术有限责任公司 | A kind of horizontal well open-hole gravel pack instrument and placement method |
| CN105134141A (en) * | 2015-08-25 | 2015-12-09 | 中国石油天然气股份有限公司 | Process pipe column |
| CN106481321A (en) * | 2016-11-16 | 2017-03-08 | 中国海洋石油总公司 | There is open-hole horizontal well gravel pack tools and the technique of big section mudstone barriers |
| CN107989572A (en) * | 2017-12-12 | 2018-05-04 | 天津大港油田石油工程研究院钻采技术开发有限公司 | A kind of Slim Hole Cementing sand control completion integrated pipe column and construction method |
| CN108533234A (en) * | 2018-06-13 | 2018-09-14 | 邹佳宸 | Horizontal well fixed tubular column sublevel fill stoping and kit |
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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: 20110209 |