CN201671623U - Leakage-finding water exclusion production string for horizontal wells - Google Patents
Leakage-finding water exclusion production string for horizontal wells Download PDFInfo
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- CN201671623U CN201671623U CN2010201991085U CN201020199108U CN201671623U CN 201671623 U CN201671623 U CN 201671623U CN 2010201991085 U CN2010201991085 U CN 2010201991085U CN 201020199108 U CN201020199108 U CN 201020199108U CN 201671623 U CN201671623 U CN 201671623U
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Abstract
The utility model relates to a leakage-finding water exclusion production string for horizontal wells, which is applied to downhole operation in oil fields and is applicable to horizontal wells incapable of carrying out normal production due to the leakage of casings. An oil pipe is connected with a gap bridge type oil production pump; the lower part of the gap bridge type oil production pump is connected with the oil pipe, the lower end of which is connected with an upper water-finding switch, the lower end of the upper water-finding switch is connected with two centralizers, between which a cup packer is connected, and the lower end of the lower centralizer is connected with a lower water-finding switch, the lower end of which is connected with a guide plug; and the cup packer is positioned in the upper part of the perforated interval of a casing. The utility model has the advantages that: the perforated interval and the annulus of the casing are packed by the self-sealing cup packer, the upper water-finding switch and the lower water-finding switch of the packer are switched off, whether the casing is damaged or not can be judged as long as a pumping unit on the ground continuously pumps oil, and thereby the string can carry out water exclusion and production in one trip. A cementing truck is not needed for suppression, and the field workload is less.
Description
Technical field
The utility model relates to the oilfield downhole operation technical field, and particularly a kind of horizontal well down-hole oil production tubing string is a kind of looking for leakage every the tubing string of adopting, and is applicable to that the run-down horizontal well that influences ordinary production takes place sleeve pipe.
Background technology
The run-down direct ordinary production that influences oil-water well of production string, run-down serious oil-water well can not be produced, and successful leak stopping at first will find run-down point.Sleeve pipe commonly used is looked for Lou the well warm therapy, multi-arm hole diameter method, under-mine TV method, isotopic tracer method etc., and straight well is looked for test leakage well technology all can not be used for net horizontal section and looked for leakage.At present, in-situ horizontal well section is looked for the Lou main packer pressure test method that adopts.
Chinese patent publication number: CN2454540 provides " a kind of Tube-colume for seanching leakage area ".Form by restriction choke and packer two parts; restriction choke comprises joint, central tube, spool and valve seat; sulfuration has rubber on the surface of spool; packer is threaded by top connection, innermost tube, lower contact and constitutes its main body; between upper and lower joint; the outside of innermost tube is with packing element and seat envelope piston, and protective sleeve is equipped with at the two ends of packing element.Can satisfy casing deformation and test cover greater than the oil-water well of 110mm and look for leakage needs, the anti-destructive of packing element is strong, operation one-time success rate height.
Owing to cause the seat blow-by of being honored as a queen at big gradient section and horizontal segment packer eccentric mounting envelope unbalance stress, need not stop to have suppressed big, the consuming time length of lower tubular column workload in looking for leakage causes packer rubber to damage, do not discharge packer or packer fully and just playing lower tubular column cause packer rubber by the internal surface of sleeve pipe scratch in dispose procedure, the scene looks for that Lou success rate is low; Need next time again every adopting the tubing string water blockoff after finding leak source.
The utility model content
The purpose of this utility model is: provide a kind of horizontal well to look for leakage every the tubing string of adopting, can find the cover damage place on well-case perforating section top, realize water blockoff simultaneously; Under motionless situation about suppressing, realize the packing oil recovery with cementing truck.
The technical solution adopted in the utility model is: horizontal well is looked for leakage every the tubing string of adopting, mainly form by sucker rod, oil pipe, gap bridge oil extraction pump, top water detection switch, cup packer, centralizer, bottom water detection switch and guiding plug, oil pipe is connected with the gap bridge oil extraction pump, and sucker rod is connected the top of gap bridge oil extraction pump.It is characterized in that: the bottom at the gap bridge oil extraction pump is connected with oil pipe, and the lower end of oil pipe is connected with top water detection switch, and the lower end of top water detection switch is connected with two centralizers, is connected with cup packer between two centralizers.Be connected with bottom water detection switch in the lower end of bottom centralizer, the lower end of bottom water detection switch connects the guiding plug; Cup packer is positioned at well-case perforating section top.
Horizontal well is looked for leakage the course of work every the tubing string of adopting: consult Fig. 1.Horizontal well is looked for leakage in the tubing string of adopting is lowered to the sleeve pipe 9 of horizontal well, and cup packer 3 is positioned at about 2～3 sleeve pipe places, perforated interval top.Effect down cup packer at centralizer is placed in the middle in well, and cup packer 3 contacts with sleeve pipe 9 inwall interference and reaches packing oil jacket annular space, horizontal well perforation section and casing section can be separated; Cup packer respectively is equipped with a water detection switch in two ends about in the of 3, and top water detection switch 2 is in the ground configuration switch time and at the down-hole time opening or cut out.Top water detection switch 2 is in opening, and bottom water detection switch 5 is in closed condition; The ground oil pumper drives gap bridge oil extraction pump 1 swabbing well liquid continuously by sucker rod 7, if the well head fluid illustrates that then the sleeve pipe 9 on perforated interval top has damage; Close to setting-up time upper switches device 2, lower switches device 5 is opened automatically, and oil pumper continuous pumping in ground realizes that water blockoff is every adopting.
The beneficial effects of the utility model: horizontal well is looked for leakage every the tubing string of adopting, look for Lou and be one every adopting with water blockoff, perforated interval and oil jacket annular space adopt the cup packer packing of self-styled form, adopting the pressure centralizer that packer is in does not between two parties all the time miss, packer top water detection switch open, bottom water detection switch are closed, and oil pumper continuous pumping in ground just can judge whether that cover decreases; Derailing switch is according to the instruction unpack that is provided with or close, and realizes water blockoff, finishes every adopting one-trip string.Need not employ cementing truck and suppress, the site work amount is little.
Description of drawings
Fig. 1 is that the utility model horizontal well is looked for leakage every the tubular column structure schematic diagram of adopting.
Among the figure, 1. gap bridge oil extraction pump, 2. top water detection switch, 3. cup packer, 4. centralizer, 5. bottom water detection switch, 6. guiding plug, 7. sucker rod, 8. oil pipe, 9. sleeve pipe.
The specific embodiment
Embodiment 1: looking for a horizontal well is example every the tubing string of adopting leakage, and the utility model is described in further detail.
Consult Fig. 1.The utility model horizontal well is looked for leakage every the tubing string of adopting, and mainly is made up of sucker rod 7, oil pipe 8, gap bridge oil extraction pump 1, top water detection switch 2, cup packer 3, centralizer 4, bottom water detection switch 5 and guiding plug 6.Oil pipe 8 upper ends are to well head, and oil pipe 8 is connected with a gap bridge oil extraction pump 1, and sucker rod 7 is connected the top of gap bridge oil extraction pump 1.
Be connected with oil pipe 8 in the bottom of gap bridge oil extraction pump 1,1500 meters of oil pipe 8 length make cup packer be in two sleeve pipe places, perforated interval top of sleeve pipe 9.The lower end of oil pipe 8 is connected with a top water detection switch 2, and the lower end of top water detection switch 2 is connected with two pressure centralizers 4, is connected with a cup packer 3 in the middle of two centralizers 4.Be connected with a bottom water detection switch 5 in the lower end of bottom centralizer 4, the lower end of bottom water detection switch 5 is connected with guiding plug 6.
Claims (1)
1. a horizontal well is looked for leakage every the tubing string of adopting, mainly form by sucker rod (7), oil pipe (8), gap bridge oil extraction pump (1), top water detection switch (2), cup packer (3), centralizer (4), bottom water detection switch (5) and guiding plug (6), oil pipe (8) is connected with gap bridge oil extraction pump (1), and sucker rod (7) is connected the top of gap bridge oil extraction pump (1); It is characterized in that: be connected with oil pipe (8) in the bottom of gap bridge oil extraction pump (1), the lower end of oil pipe (8) is connected with top water detection switch (2), the lower end of top water detection switch (2) is connected with two centralizers (4), between two centralizers (4), be connected with cup packer (3), be connected with bottom water detection switch (5) in the lower end of bottom centralizer (4), the lower end of bottom water detection switch (5) connects guiding plug (6); Cup packer (3) is positioned at sleeve pipe (9) perforated interval top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201991085U CN201671623U (en) | 2010-05-18 | 2010-05-18 | Leakage-finding water exclusion production string for horizontal wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201991085U CN201671623U (en) | 2010-05-18 | 2010-05-18 | Leakage-finding water exclusion production string for horizontal wells |
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| Publication Number | Publication Date |
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| CN201671623U true CN201671623U (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201991085U Expired - Lifetime CN201671623U (en) | 2010-05-18 | 2010-05-18 | Leakage-finding water exclusion production string for horizontal wells |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643942A (en) * | 2013-12-13 | 2014-03-19 | 中国工程物理研究院核物理与化学研究所 | Isotope labeling testing method of water outlet portion of high-water-content horizontal well |
| CN104120997A (en) * | 2014-07-31 | 2014-10-29 | 中国石油天然气股份有限公司 | Pipe column for horizontal well |
| CN104420836A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Water finding tubular column of horizontal well section seat sealing wellhead flow method and water finding method thereof |
| CN104500057A (en) * | 2014-12-03 | 2015-04-08 | 中国石油化工股份有限公司 | Testing method of liquid producing profile of horizontal well |
| CN105756670A (en) * | 2013-12-13 | 2016-07-13 | 中国工程物理研究院核物理与化学研究所 | Isotope labeling test method for water outlet part of high-water-cut horizontal well |
| CN105756669A (en) * | 2013-12-13 | 2016-07-13 | 中国工程物理研究院核物理与化学研究所 | Isotope labeling test method for water outlet part of high-water-cut horizontal well |
| CN107178363A (en) * | 2017-05-26 | 2017-09-19 | 中国石油天然气股份有限公司 | Casing deformation well Tube-colume for seanching leakage area and its look for leakage technique |
| CN113445944A (en) * | 2021-06-25 | 2021-09-28 | 中国石油天然气股份有限公司 | Pollution-free sand-proof production-increasing method for oil well |
| CN113445960A (en) * | 2021-06-24 | 2021-09-28 | 中国石油天然气股份有限公司 | Water plugging method for oil well casing damage |
-
2010
- 2010-05-18 CN CN2010201991085U patent/CN201671623U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420836A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Water finding tubular column of horizontal well section seat sealing wellhead flow method and water finding method thereof |
| CN103643942A (en) * | 2013-12-13 | 2014-03-19 | 中国工程物理研究院核物理与化学研究所 | Isotope labeling testing method of water outlet portion of high-water-content horizontal well |
| CN103643942B (en) * | 2013-12-13 | 2016-02-17 | 中国工程物理研究院核物理与化学研究所 | High water cut horizontal well outlet part Bit Parity element labeled test method |
| CN105756670A (en) * | 2013-12-13 | 2016-07-13 | 中国工程物理研究院核物理与化学研究所 | Isotope labeling test method for water outlet part of high-water-cut horizontal well |
| CN105756669A (en) * | 2013-12-13 | 2016-07-13 | 中国工程物理研究院核物理与化学研究所 | Isotope labeling test method for water outlet part of high-water-cut horizontal well |
| CN105756670B (en) * | 2013-12-13 | 2019-06-18 | 中国工程物理研究院核物理与化学研究所 | High water cut horizontal well outlet part Bit Parity element labeled test method |
| CN105756669B (en) * | 2013-12-13 | 2019-06-18 | 中国工程物理研究院核物理与化学研究所 | High water cut horizontal well outlet part Bit Parity element labeled test method |
| CN104120997A (en) * | 2014-07-31 | 2014-10-29 | 中国石油天然气股份有限公司 | Pipe column for horizontal well |
| CN104500057A (en) * | 2014-12-03 | 2015-04-08 | 中国石油化工股份有限公司 | Testing method of liquid producing profile of horizontal well |
| CN107178363A (en) * | 2017-05-26 | 2017-09-19 | 中国石油天然气股份有限公司 | Casing deformation well Tube-colume for seanching leakage area and its look for leakage technique |
| CN113445960A (en) * | 2021-06-24 | 2021-09-28 | 中国石油天然气股份有限公司 | Water plugging method for oil well casing damage |
| CN113445944A (en) * | 2021-06-25 | 2021-09-28 | 中国石油天然气股份有限公司 | Pollution-free sand-proof production-increasing method for oil well |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |
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| CX01 | Expiry of patent term |