CN101122218A - Drift sand well harnessing process - Google Patents
Drift sand well harnessing process Download PDFInfo
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- CN101122218A CN101122218A CNA2007100129385A CN200710012938A CN101122218A CN 101122218 A CN101122218 A CN 101122218A CN A2007100129385 A CNA2007100129385 A CN A2007100129385A CN 200710012938 A CN200710012938 A CN 200710012938A CN 101122218 A CN101122218 A CN 101122218A
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- sand
- washing
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- filling
- tubing string
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Abstract
The invention relates to a fluid sand occurring oil-water well control technique. With the techniques, a fluid sand occurring well is pre-washed with the techniques of continuous sand washing, then a particular anti-sand sieve tube is used as a sand-washing and anti-sand string, and then sand-washing is carried out in an anti-circulating way by using the continuous sand-washing techniques and with the high-density sand-washing liquid. After a well bore sand column is washed, gravels are filled into the sand column. A flush joint tube arranged at the lower section of the sand column triggers a filling passage under a sand-washing pipe to complete sealing and isolation of the flush joint tube and the filling passage. Quartz sand is filled into a stratum, around the well bore and in to the space between the sieve tube and a casing ring. After the filling is completed, the string filled with gravels is lifted upwards and got out. High-temperature is piled in, solvent is dissolved, or particular organic stopping substances in clearances of the sieve tube are dissolved to form a fluid flow passage for production. The techniques can be easily implemented and is provided with a good effect. The techniques can effectively settle the problem that of fluid-sand occurring and sand washing and prevention for an oil-water well, so most stopped wells can recover the production or be injected with water, to improve the oil field exploitation effect.
Description
Technical field:
The present invention relates to a kind ofly be used to quicksand oil, well and administer the process that reproduces multiple notes, belong to oil recovery workover treatment technology class.
Background technology:
Oil-water well goes out quicksand and is meant formation cementation difference or not glued substantially oil-water well in operation sand washing process repeatedly after the sand washing, and the pit shaft sand setting dashes unclean.Analyzing reason mainly is that formation cementation is loose, and cement is destroyed in producing degree of reservoir difference or the recovery process, and under the effect of strata pressure, the anti-pit shaft of telling of reservoir sand causes the sand face to go up, and makes the oil-water well can not ordinary production or can not implement down step process.At present, on-the-spot owing to lack effective improvement technology, the method that can only take closes a well in stops annotating is handled.
Summary of the invention:
The object of the present invention is to provide a kind of oil-water well that can effectively solve to go out the quicksand problem, thereby improve the drift sand well harnessing process of oil field development effect.
Technical scheme of the present invention is as follows.Drift sand well harnessing process provided by the invention is at the sand washing of quicksand well, a sand control difficult problem, adopt the pre-sand washing of continuous sand washing technique convection current sand drain, adopt extraordinary sand control screen conduct towards sand control pipe then, at band sand control on sand control pipe with packer and packing tool, adopt continuous sand washing technique, cooperate the high density sand cleaning fluid, inverse circular sand washing adapter; After sand cleaning fluid rinses pit shaft sand post, base sealed packer, give up and be lowered to the gravel pack tubing string then, the no box cupling intubate of following band, under the certain force effect, no box cupling intubate is touched the filling passage under the sand clean out pipe, finishes the packing of no box cupling intubate and filling passage, utilizes ground pump truck to reach the quartz sands of screen casing and a large amount of certain particle diameters of casing annulus filling around stratum, pit shaft; Carry the filling tubing string after the sand off under the cooperation of slip well head, packing tool cuts out automatically, trips out the gravel pack tubing string, finishes whole sand washing, sand-preventing process.Clamp-on high-temp liquid or solvent melts afterwards or dissolve the interstitial organic obstruction of extraordinary screen casing, form fluid course and produce.
The construction sequence of this kind process is as follows:
1, adopt the positive sand washing of continuous sand washing technique to the precalculated position;
The sand prevention integrated tubing string that dashes that 2, will design is lowered to the sand operation that recoils in the oil-water well;
3, treat that sand washing suppresses an envelope hanger behind shaft bottom or precalculated position, realize giving up;
4, be lowered to the gravel pack tubing string, following band does not have joint hoop intubate, open fill passage;
5, clamp-on gravel in the annular space outside oil reservoir and screen casing, form the sand block barrier;
6, carry the filling tubing string on, close the filling passage;
7, inject high-temp liquid and melt organic obstruction in extraordinary sand control pore crack;
8, tripping out top tubing string completion after giving up produces.
The technical essential of this process is as follows:
1, adopts positive and negative continuous sand washing technique simultaneously.For avoiding that the sand card takes place in the sand washing process, not termination of pumping makes up a joint in the sand washing process;
2, adopt bottom filling gravel technology or not filling completion, latus rectum is enough big behind the assurance sand control;
3, adopt the sand prevention integrated tubing string that dashes of band sand control packer under the extraordinary screen casing.The screen casing sealing is finished the sand washing process seat and is honored as a queen during the extraordinary screen casing sand washing of this kind, and the sealed passage of screen casing is opened under certain condition, forms fluid course;
4, adopt big latus rectum packer.This kind packer adopt waterpower seat envelope, on put forward the structure that deblocking, seat envelope are given up and finished simultaneously, be divided into generally that seat seals, gives up, main body, separate the back cover part, seat envelope part mainly is the system of surging, can produce enough seat envelope power, the part of giving up is made up of elastic claw, guiding valve and support member, guiding valve moves by pin control, cut off pin after guiding valve support member is released spring detent, the upper lifting pipe post is given up.
Drift sand well harnessing technology provided by the invention is easy to implement, respond well, utilizes it can effectively separate the sand control problem of dashing that has decided the quicksand oil-water well, and most of dead well is returned to normal production or water filling, improves oil well output, improves the oil field development effect.
Description of drawings:
Accompanying drawing is an operating tool string structural representation of the present invention.
The specific embodiment:
Be illustrated below in conjunction with accompanying drawing.Among the figure, label " 5 ", " 6 " are respectively oil reservoir and artificial bottom of a well.
As shown in the figure: the down-hole string that adopts when the present invention constructs is made up of oil pipe 1, fill-type hanger 2, extraordinary sand control screen 3 and bottom filling device 4.Wherein fill-type hanger 2 adopts big latus rectum packer, and by pedestal, give up, main body, separate back cover and partly form, seat envelope part be the system of surging, and gives up and partly is made up of elastic claw, guiding valve and support member.The prior art that extraordinary sand control screen 3 and bottom filling device 4 are being applied for a patent.
Claims (5)
1. drift sand well harnessing process, it is characterized in that: this process is at the sand washing of quicksand well, a sand control difficult problem, adopt the pre-sand washing of continuous sand washing technique convection current sand drain, adopt extraordinary sand control screen conduct towards sand control pipe then, at band sand control on sand control pipe with packer and packing tool, adopt continuous sand washing technique to cooperate high density sand cleaning fluid, inverse circular sand washing adapter; After sand cleaning fluid rinses pit shaft sand post, base sealed packer, give up, be lowered to the gravel pack tubing string then, the no box cupling intubate of following band, under the certain force effect, no box cupling intubate is touched the filling passage under the sand clean out pipe, finish docking of no box cupling intubate and filling passage, utilize ground pump truck around stratum, pit shaft and the quartz sands of screen casing and a large amount of certain particle diameters of casing annulus filling; On under the cooperation of slip well head, carry the filling tubing string after the sand off, packing tool cuts out automatically, trips out the gravel pack tubing string, finishes whole sand washing, sand-preventing process, clamp-on high-temp liquid or solvent melts afterwards or dissolve the interstitial organic obstruction of extraordinary screen casing, form fluid course and produce.
2. drift sand well harnessing process as claimed in claim 1 is characterized in that: the main construction sequence of this kind process is as follows:
(1) adopt the positive sand washing of continuous sand washing technique to the precalculated position;
The sand prevention integrated tubing string that dashes that (2) will design is lowered to the sand operation that recoils in the oil-water well;
(3) treat that sand washing suppresses the seat envelope behind shaft bottom or the precalculated position, realize giving up;
(4) gravel pack tubing string under, the no box cupling intubate of following band, open fill passage;
(5) clamp-on gravel in the annular space outside oil reservoir and screen casing;
(6) carry the filling tubing string on, close the filling passage;
(7) inject high-temp liquid and melt organic obstruction in extraordinary sand control pore crack;
(8) trip out filling tubing string completion.
3. drift sand well harnessing process as claimed in claim 1 is characterized in that: adopt positive and negative continuous sand washing technique simultaneously.
4. drift sand well harnessing process as claimed in claim 1 is characterized in that: bottom gravel pack technology or not filling well-completing process are adopted in gravel pack.
5. drift sand well harnessing process as claimed in claim 1, it is characterized in that: the sand prevention integrated tubing string that dashes that adopts band screen casing under the sand control packer, the channel seal during sand washing of this kind screen casing, after finishing filling process or not filling completion, the sealed passage of screen casing is opened under certain condition, forms fluid course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100129385A CN101122218A (en) | 2007-09-24 | 2007-09-24 | Drift sand well harnessing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100129385A CN101122218A (en) | 2007-09-24 | 2007-09-24 | Drift sand well harnessing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101122218A true CN101122218A (en) | 2008-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100129385A Pending CN101122218A (en) | 2007-09-24 | 2007-09-24 | Drift sand well harnessing process |
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| CN (1) | CN101122218A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383750A (en) * | 2011-09-28 | 2012-03-21 | 张作阳 | Continuous positive and negative integrated sand washing device for oil well |
| CN101338660B (en) * | 2008-08-12 | 2013-02-13 | 安东石油技术（集团）有限公司 | Horizontal production-injection well completion structure possessing flow control function |
| CN104407099A (en) * | 2014-10-16 | 2015-03-11 | 中国海洋石油总公司 | Sand cleaning fluid performance testing method |
| CN104632130A (en) * | 2014-12-03 | 2015-05-20 | 中国庆华能源集团有限公司 | Workover well completion process |
| CN106761590A (en) * | 2015-11-24 | 2017-05-31 | 中国石油化工股份有限公司 | Many slug high compact filling anti-sand processes |
| CN111005704A (en) * | 2019-09-26 | 2020-04-14 | 霍尔果斯弗莱瑟逆向石油科技有限公司 | Flexible reverse sieve tube |
| CN113638712A (en) * | 2021-08-30 | 2021-11-12 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
-
2007
- 2007-09-24 CN CNA2007100129385A patent/CN101122218A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338660B (en) * | 2008-08-12 | 2013-02-13 | 安东石油技术（集团）有限公司 | Horizontal production-injection well completion structure possessing flow control function |
| CN102383750A (en) * | 2011-09-28 | 2012-03-21 | 张作阳 | Continuous positive and negative integrated sand washing device for oil well |
| CN102383750B (en) * | 2011-09-28 | 2014-04-02 | 张作阳 | Continuous positive and negative integrated sand washing device for oil well |
| CN104407099A (en) * | 2014-10-16 | 2015-03-11 | 中国海洋石油总公司 | Sand cleaning fluid performance testing method |
| CN104632130A (en) * | 2014-12-03 | 2015-05-20 | 中国庆华能源集团有限公司 | Workover well completion process |
| CN106761590A (en) * | 2015-11-24 | 2017-05-31 | 中国石油化工股份有限公司 | Many slug high compact filling anti-sand processes |
| CN111005704A (en) * | 2019-09-26 | 2020-04-14 | 霍尔果斯弗莱瑟逆向石油科技有限公司 | Flexible reverse sieve tube |
| CN113638712A (en) * | 2021-08-30 | 2021-11-12 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080213 |