CN200952367Y - Underwell continuous sand flushing tubular column - Google Patents
Underwell continuous sand flushing tubular column Download PDFInfo
- Publication number
- CN200952367Y CN200952367Y CN 200620085676 CN200620085676U CN200952367Y CN 200952367 Y CN200952367 Y CN 200952367Y CN 200620085676 CN200620085676 CN 200620085676 CN 200620085676 U CN200620085676 U CN 200620085676U CN 200952367 Y CN200952367 Y CN 200952367Y
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- China
- Prior art keywords
- pipe
- tubing string
- oil
- washing pipe
- hole
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- Expired - Fee Related
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Abstract
The utility model discloses a down-hole continuous sand washing pipe column for the usage in petroleum industry, which is applicable to the down-hole sand washing project of oil-water well, more particularly to the sand washing in the oil-water well with oil leakage layer. The utility model includes an oil pipe and a washing pipe and is sealed by an upper movable sealing packer and a lower movable sealing packer between a sleeve pipe and the oil pipe. The sand washing pipe includes an inner sand washing pipe and an outer sand washing pipe. The inner sand washing pipe is arranged inside the outer sand washing pipe. The utility model could guarantee the sand washing liquid not entering the oil layer, protect the oil layer, improve the recovery ratio, save grate amount of funds, reduce the production cost with no need to stuff the absorption well temporarily, and implement the sand filling construction.
Description
Technical field
The utility model relates to the oil production equipment of petroleum industry, and particularly a kind of down-hole continuous sand flushing tubing string is applicable to the down-hole sand washing engineering of oil-water well, particularly misses the oil-water well sand washing of oil reservoir.
Background technology
Along with the oil field enters development late stage, there is the phenomenon of shaking out in various degree in on-the-spot a large amount of oil wells, comprise the oil well that tell on the recovery process stratum needs the later stage sand washing after sand and the back-up sand in early stage.Need to remove formation sand production in this part oil well operation process or need the desilting in the back-up sand measure in early stage be washed.Mainly adopting sewage to take sand in the oil pipe sand washing process down, because on-the-spot most of oil well all exists leakage phenomena and the big discharge capacity circulation of sand washing process need to guarantee flow stream velocity, in the sand washing process, cause pollution inevitably to the stratum, a part of sand cleaning fluid enters the stratum simultaneously, reduce flow stream velocity, thereby slowed down sand washing speed.Missing serious oil well even can not return out sand cleaning fluid and cause sand washing failure in part, even adopt in the oil well chemical plugging agent measure sand washing such as stifled lost-circulation zone temporarily also to be difficult to guarantee the sand washing effect in this section.The stifled temporarily sand washing of the stifled temporarily well of comprehensively measuring and calculating, average a bite needs various expenses more than 20,000 yuan, causes simultaneously that to account for the product time long, and the sand cleaning fluid leakage enters the stratum and causes oil layer pollution, even because of blocking up the loss such as cause that measure can't be implemented of failing temporarily.
Summary of the invention
The purpose of this utility model provides a kind of down-hole continuous sand flushing tubing string, guarantees that sand cleaning fluid does not enter the stratum in the sand washing process, even the stratum deficit seriously can not cause the leakage polluted reservoir yet.The protection oil reservoir, the recovery ratio of raising oil reservoir reduces production costs, and increases economic efficiency.
Adopt the technical program can reach above-mentioned purpose: a kind of down-hole continuous sand flushing tubing string, comprise oil pipe and washing pipe, between sleeve pipe and the oil pipe by on movable sealing packer and following movable sealing packer sealing, washing pipe post and outwash tubing string in the sand washing tubing string comprises, interior washing pipe post is installed in inside the outwash tubing string.
It is remarkable that the utility model and existing sand flushing tool are compared effect, and washing pipe post and outwash tubing string in this device is divided into have been set up circulation for sand cleaning fluid, make sand cleaning fluid all be used for carrying out sand washing and take sand, have accelerated sand washing speed.Sealed the above and below of oil reservoir, sand cleaning fluid enters from the outwash tubing string of oil reservoir top, and the interior washing pipe post from the oil reservoir below returns out ground.Guaranteed that sand cleaning fluid does not enter oil reservoir, protected oil reservoir, improved recovery ratio.Simultaneously need not be stifled temporarily to absorption well, save substantial contribution, reduced cost of production, can also carry out the back-up sand construction by the utility model.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with embodiment the utility model is done further detailed description: referring to accompanying drawing, a kind of down-hole continuous sand flushing tubing string, comprise oil pipe 2 and washing pipe 6, between sleeve pipe 1 and the oil pipe 2 by on movable sealing packer 5 and following movable sealing packer 7 seal, washing pipe post and outwash tubing string in the sand washing tubing string comprises, interior washing pipe post are installed in outwash tubing string the inside.Interior washing pipe post comprises crossover sub 3 and washing pipe 6, and washing pipe 6 is suspended on the crossover sub 3.Crossover sub 3 cylindricals are processed with thread, are used for being connected with oil pipe 2, and centre bore has screw thread, are used for being connected with washing pipe 6.The outwash tubing string comprises oil pipe 2, screen casing 4 and throttle nozzle 8, and screen casing 4 connects oil pipe 2 up and down, and throttle nozzle 8 is connected the not end of oil pipe 2.Throttle nozzle 8 comprises shelves ring and nozzle body, and the shelves ring is installed in the top of nozzle body; Nozzle body do not hold be the nib shape, its cylindrical is tapered; The nozzle body inner chamber is top formula conical internal cavity.The centre bore of shelves ring is a cone-shaped inner hole, and the narrow road of cone-shaped inner hole conforms to washing pipe 6 external diameters, and its centre bore periphery is provided with liquid circulation groove or through hole.Guaranteeing that washing pipe 6 safety hang the adeciduate while, can allow sand cleaning fluid pass through again.The below of the crossover sub 3 of washing pipe post in the screen casing 4 of outwash tubing string is installed in.Last movable sealing packer 5 and following movable sealing packer 7 place the below of screen casing 4, seal at the above and below of oil reservoir seat respectively.Washing pipe 6 is connected the bottom of crossover sub 3, and washing pipe 6 external diameters are littler than oil pipe 2 internal diameters, passes in oil pipe 2, and crossover sub 3 is connected on the oil pipe 2, and its function is to hang washing pipe 6, guarantees that simultaneously the oil pipe 2 of upper and lower part is not communicated with relatively.Upper and lower movable sealing packer 5,7 is connected on the oil pipe 2, its position is in the bottom of crossover sub 3, on the outwash tubing string between last movable sealing packer 5 and the crossover sub 3, be connected with screen casing 4, its function is to make sand cleaning fluid set up circulation, and the distance between the upper and lower movable sealing packer 5 and 7 is calculated definite according to sand washing sand face 9 and core intersection.Upper and lower movable sealing packer 5 and 7 effect are to realize movable sealing in the continuous sand flushing process, make sand cleaning fluid not enter oil reservoir.The bottom of washing pipe post oil pipe 2 is connected to throttle nozzle 8 outside, has oblique type nib, is used to rub with the hands broken hard sand face.Washing pipe 6 passes from the central authorities of throttle nozzle 8, forms tiny runner, and sand cleaning fluid from then on spatial flow is crossed the very high flow velocity of formation, impacts, stirs desilting; Sand cleaning fluid carries endoporus, crossover sub 3, the oil pipe 2 of desilting through washing pipe 6, takes ground out of.During on-the-spot the use, go out ground along with sand cleaning fluid constantly carries desilting, the sand face constantly descends, and need constantly transfer the utility model, realizes continuous sand flushing, thereby removes the shaft bottom desilting.
Claims (8)
1, a kind of down-hole continuous sand flushing tubing string, comprise oil pipe (2) and washing pipe (6), between sleeve pipe (1) and oil pipe (2), seal by last movable sealing packer (5) and following movable sealing packer (7), it is characterized in that the sand washing tubing string comprises interior washing pipe post and outwash tubing string, interior washing pipe post is installed in outwash tubing string the inside.
2, a kind of down-hole according to claim 1 continuous sand flushing tubing string, the washing pipe post comprises crossover sub (3) and washing pipe (6) in it is characterized in that, washing pipe (6) is suspended on the crossover sub (3).
3, a kind of down-hole according to claim 2 continuous sand flushing tubing string is characterized in that crossover sub (3) cylindrical is provided with screw thread and is connected with oil pipe (2); Its centre bore has screw thread to be connected with washing pipe (6).
4, a kind of down-hole according to claim 1 continuous sand flushing tubing string is characterized in that the outwash tubing string comprises oil pipe (2), screen casing (4) and throttle nozzle (8), and screen casing (4) connects oil pipe (2) up and down, and throttle nozzle (8) is connected the not end of oil pipe (2).
5, a kind of down-hole according to claim 4 continuous sand flushing tubing string is characterized in that throttle nozzle (8) comprises a shelves ring and a nozzle body, and the shelves ring is installed in the top of nozzle body; Nozzle body do not hold be the nib shape, its cylindrical is tapered; The nozzle body inner chamber is top formula conical internal cavity.
6, a kind of according to claim 1 or 5 down-hole continuous sand flushing tubing string is characterized in that the centre bore of shelves ring is a cone-shaped inner hole, and the narrow road of cone-shaped inner hole conforms to washing pipe (6) external diameter, and its centre bore periphery is provided with liquid circulation groove or through hole.
7,, it is characterized in that the screen casing (4) of outwash tubing string is installed in the below of the crossover sub (3) of interior washing pipe post according to claim 4 or 2 described a kind of down-hole continuous sand flushing tubing strings.
8,, it is characterized in that movable sealing packer (5) and following movable sealing packer (7) place the below of screen casing (4), seal at the above and below of oil reservoir seat respectively according to claim 1 or 4 described a kind of down-hole continuous sand flushing tubing strings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085676 CN200952367Y (en) | 2006-06-12 | 2006-06-12 | Underwell continuous sand flushing tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085676 CN200952367Y (en) | 2006-06-12 | 2006-06-12 | Underwell continuous sand flushing tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200952367Y true CN200952367Y (en) | 2007-09-26 |
Family
ID=38810668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620085676 Expired - Fee Related CN200952367Y (en) | 2006-06-12 | 2006-06-12 | Underwell continuous sand flushing tubular column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200952367Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343671A (en) * | 2013-07-17 | 2013-10-09 | 濮阳市东昊机械电子有限公司 | Small washpipe continuous sand washing tubular column |
| CN104407099A (en) * | 2014-10-16 | 2015-03-11 | 中国海洋石油总公司 | Sand cleaning fluid performance testing method |
| CN104533325A (en) * | 2014-12-30 | 2015-04-22 | 李国晗 | Oil gas water well universal type positive cycle type high-efficiency inner bailing combination tool |
| CN105625969A (en) * | 2014-10-29 | 2016-06-01 | 中国石油化工股份有限公司 | Continuous sand flushing conversion tool |
| CN106703774A (en) * | 2015-11-18 | 2017-05-24 | 中国石油化工股份有限公司 | Drag hydraulic jet fracturing and ball casting slide bushing sand washing integrated operation device and method |
| CN111119747A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Drilling string and drilling completion integrated method |
-
2006
- 2006-06-12 CN CN 200620085676 patent/CN200952367Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343671A (en) * | 2013-07-17 | 2013-10-09 | 濮阳市东昊机械电子有限公司 | Small washpipe continuous sand washing tubular column |
| CN103343671B (en) * | 2013-07-17 | 2016-12-28 | 濮阳市东昊机械电子有限公司 | Little washing pipe continuous flushing sand tubular column |
| CN104407099A (en) * | 2014-10-16 | 2015-03-11 | 中国海洋石油总公司 | Sand cleaning fluid performance testing method |
| CN105625969A (en) * | 2014-10-29 | 2016-06-01 | 中国石油化工股份有限公司 | Continuous sand flushing conversion tool |
| CN104533325A (en) * | 2014-12-30 | 2015-04-22 | 李国晗 | Oil gas water well universal type positive cycle type high-efficiency inner bailing combination tool |
| CN106703774A (en) * | 2015-11-18 | 2017-05-24 | 中国石油化工股份有限公司 | Drag hydraulic jet fracturing and ball casting slide bushing sand washing integrated operation device and method |
| CN106703774B (en) * | 2015-11-18 | 2018-12-28 | 中国石油化工股份有限公司 | Drawing type hydraulic jetting fracturing and pitching sliding sleeve sand washing connection make device and method |
| CN111119747A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Drilling string and drilling completion integrated method |
| CN111119747B (en) * | 2018-11-01 | 2021-08-13 | 中国石油化工股份有限公司 | Drilling string and drilling completion integrated method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 |