CN1445433A - Method for regulating section of oil wells - Google Patents
Method for regulating section of oil wells Download PDFInfo
- Publication number
- CN1445433A CN1445433A CN 02104941 CN02104941A CN1445433A CN 1445433 A CN1445433 A CN 1445433A CN 02104941 CN02104941 CN 02104941 CN 02104941 A CN02104941 A CN 02104941A CN 1445433 A CN1445433 A CN 1445433A
- Authority
- CN
- China
- Prior art keywords
- water
- oil
- regulating section
- oil wells
- blocking agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
A method for regulating the oil recovering cross-section of oil well and increasing the water-plugging effect features that the plugging agent for big artery or seam is injected under low pressure and then the clean water is used to replace the plugging agent. Its advantages are simple operation, and durable high oil output.
Description
Affiliated technical field: exploitation of oil-gas field
Background technology:
One of difficult problem that domestic and international oil field often runs on stream is: because oil reservoir itself exists heterogeneous body, grows unequal situation, after waterflooding extraction was dropped in the oil field, interlayer difference increased, and well water rises, output descends, and is having a strong impact on oil well production and oil field development effect.In addition, be to exist high permeability zone and hyposmosis band in the main product layer at the high permeability zone of oil well, oil-water common-layer appears, and bring big difficulty for the oil well water blockoff.At present, adopt measures such as oilwell water shutoff to solve this problem usually.Yet, the first water detection of adopting on oilwell water shutoff is the method for water blockoff again, it is long that activity times such as filling in, test effect is waited with fixed attention, bored to water detection, crowded blocking agent, closing well, the expense height, on the other hand owing to oil-water common-layer, water-yielding stratum are judged reasons such as being forbidden, take over layer potentiality deficiency, cause stifled back liquid measure, oil mass, moisturely all descend, do not reach the water blockoff oil increasing effect, and period of validity is lacked.
The purpose of invention:
The objective of the invention is to propose method for regulating section of oil wells, realize blocking agent height, each layer water absorbing capacity size natural selection blocking agent by permeability in the oil well water yield formation, cross replacement by clear water, the result is stifled again and not dead, reaches the purpose of adjusting the oil well liquid-producing section, change the water detection of crude oil well water blockoff elder generation, block certain layer again, block up the practice that the back is bored plug, tested effect, stablize moisture reduction thereby obtain liquid measure, oil mass increases, the good regulating section of oil wells effect of long period of validity.
Technical scheme:
Method for regulating section of oil wells provided by the invention is to realize like this.The key point of this method is to adopt existing ripe profile control blocking agent prescription, in order to the high aquifer of shutoff oil well macropore, crack.On the oil well low force down discharge capacity and generally inject blocking agent after, adopt clear water to cross the profile control method that replaces blocking agent again.Whole construction is divided into three phases: (1) annotates the existing ripe profile control blocking agent stage; (2) it's the replacement stage is past clear water; (3) closing well is waited the stage of coagulating; Implementation step is as follows:
(1), annotate the existing ripe profile control blocking agent stage, in ground profile control agent injection allocation volume, by the various raw materials of profile control blocking agent prescription requirement adding, all the other add water, stir; With pump truck the profile control blocking agent is squeezed into the stratum.
(2), it's the replacement stage pasts clear water, the profile control blocking agent has been beaten the back and has been replaced blocking agent with clear water.
(3), closing well wait to coagulate the stage, determine according to various blocking agent performances that closing well is waited and coagulate.
Last well-flushing, following pump recover the oil well ordinary production.
The effect of invention:
Method for regulating section of oil wells provided by the present invention, adopt existing ripe profile control blocking agent, distinguish the high aquifer of shutoff oil well macropore, crack, and cross the practice that replaces blocking agent with clear water, good regulating section of oil wells effect and long period of validity be can obtain, oil well production and reservoir exploitation situation improved.This method is simple, and is respond well, and used blocking agent is all off-the-shelf, is particularly useful for the oil well that multilayer is generally exploited, interlayer difference big, height is moisture.
Claims (4)
1, method for regulating section of oil wells adopts stifled and not dead method when it is characterized in that oilwell water shutoff.
2, method for regulating section of oil wells according to claim 1 is characterized in that water blockoff is preceding without water detection, and directly full well generally squeezes and blocks up.
3, method for regulating section of oil wells according to claim 1 is characterized in that crossing the replacement blocking agent with clear water.
4, method for regulating section of oil wells according to claim 1 is characterized in that blocking up the back and bores plug, checking plugging effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02104941 CN1445433A (en) | 2002-03-15 | 2002-03-15 | Method for regulating section of oil wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02104941 CN1445433A (en) | 2002-03-15 | 2002-03-15 | Method for regulating section of oil wells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1445433A true CN1445433A (en) | 2003-10-01 |
Family
ID=27810914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02104941 Pending CN1445433A (en) | 2002-03-15 | 2002-03-15 | Method for regulating section of oil wells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1445433A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216211A (en) * | 2012-01-18 | 2013-07-24 | 中国石油天然气股份有限公司 | Method for carrying out profile control on fracture-type oil reservoir |
| CN103321606A (en) * | 2013-07-02 | 2013-09-25 | 中国石油集团川庆钻探工程有限公司 | Low-permeability fractured reservoir oil well water-plugging and screening method |
| CN103821474A (en) * | 2012-11-16 | 2014-05-28 | 中国石油天然气股份有限公司 | Extra-low-permeability oil reservoir profile control method |
| CN106194105A (en) * | 2016-09-19 | 2016-12-07 | 中国石油化工股份有限公司 | Profile control method is thrown in blocking agent deep |
-
2002
- 2002-03-15 CN CN 02104941 patent/CN1445433A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216211A (en) * | 2012-01-18 | 2013-07-24 | 中国石油天然气股份有限公司 | Method for carrying out profile control on fracture-type oil reservoir |
| CN103216211B (en) * | 2012-01-18 | 2015-09-23 | 中国石油天然气股份有限公司 | A kind of Fractured reservoir profile control method |
| CN103821474A (en) * | 2012-11-16 | 2014-05-28 | 中国石油天然气股份有限公司 | Extra-low-permeability oil reservoir profile control method |
| CN103821474B (en) * | 2012-11-16 | 2016-08-10 | 中国石油天然气股份有限公司 | A kind of extra-low-permeability reservoir depth profile control method |
| CN103321606A (en) * | 2013-07-02 | 2013-09-25 | 中国石油集团川庆钻探工程有限公司 | Low-permeability fractured reservoir oil well water-plugging and screening method |
| CN103321606B (en) * | 2013-07-02 | 2016-05-04 | 中国石油集团川庆钻探工程有限公司 | A kind of Fracture with low permeability oil reservoir oilwell water shutoff screen method |
| CN106194105A (en) * | 2016-09-19 | 2016-12-07 | 中国石油化工股份有限公司 | Profile control method is thrown in blocking agent deep |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201474673U (en) | Oil-producing pipe column for sectional water control of horizontal well | |
| CN102094612B (en) | Active water fracturing technology of coal-bed gas well | |
| CN103306643B (en) | A kind of water drainage gas production device and method | |
| US11898414B2 (en) | Method for filling oil-gas well of fractured oil-gas reservoir with isolation particles to reduce water and increase oil production | |
| CN101333922A (en) | Fracturing process for removing breakdown fluid contamination | |
| CN207122297U (en) | It is a kind of that there is the big orifice for setting function of giving up to exempt to bore bridging plug | |
| CN105370256A (en) | Method for increasing wetting radius of high-pressure water injection of low-air-permeability coal seams through sectioned pre-splitting | |
| CN104100254A (en) | Sectional synchronous flow rate and water content monitoring and water exploration tubular column of multi-section fracturing horizontal well and working method thereof | |
| CN106968651A (en) | A kind of nitrogen and carbon dioxide composite swallowing-spitting oil extraction | |
| CN104696006A (en) | Method for extracting residual coal bed gas in multiple layers of goafs by drilling well from ground and penetrating through residual coal pillars | |
| CN106401925A (en) | Downhole gas-liquid transduction booster pump | |
| CN107939351B (en) | Coal bed gas drainage and gas production device and using method thereof | |
| CN201013344Y (en) | Corollary equipment for bottom water reservoir potential equilibrium dislodging | |
| CN104763621B (en) | A kind of sucker rod pump equipment for coal-bed gas exploitation | |
| CN1445433A (en) | Method for regulating section of oil wells | |
| WO2004065917A3 (en) | Multi-lateral well with downhole gravity separation | |
| CN113175316A (en) | New method for plugging underground or underground old crack | |
| CN203321507U (en) | Sectional flow rate and water content synchronous monitoring and water detection tubular column for multi-stage fractured horizontal well | |
| CN201031679Y (en) | Deep layer gas well multiple fracturing tools string | |
| CN201318149Y (en) | Unidirectional inner blowout control pump-out type blanking plug | |
| CN203879719U (en) | Integrated gas injecting and oil extracting pump | |
| CN104747434B (en) | Screw pump equipment for exploiting coal bed gas | |
| CN201025018Y (en) | Once pipe pole using hierarchical acidification pressure crack technology | |
| CN103470221A (en) | Underbalance tubing, no-killing gas lifting, shaft pumping and pump detecting combined method | |
| CN207080201U (en) | The sliding sleeve opener and its sliding sleeve of bushing of a kind of variable-length |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |