CN104018817A - Underground water filter capable of being thrown and fished - Google Patents
Underground water filter capable of being thrown and fished Download PDFInfo
- Publication number
- CN104018817A CN104018817A CN201410260219.5A CN201410260219A CN104018817A CN 104018817 A CN104018817 A CN 104018817A CN 201410260219 A CN201410260219 A CN 201410260219A CN 104018817 A CN104018817 A CN 104018817A
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- hanging
- filter
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- hung
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Abstract
An underground water filter capable of being thrown and fished comprises a hanging short connection component and a hanging filter component movably mounted in the hanging short connection component. The hanging short connection component comprises a cylindrical body with the two ends open, connectors arranged at the two ends of the cylindrical body respectively, reducing hanging circular beads arranged on the inner surface of the middle portion of the cylindrical body from top to bottom in sequence, and a body sealing section. The hanging filter component comprises a hanging body and a filter screening pipe connected to the lower end of the hanging body, a fishing groove is formed in the inner surface of the upper portion of the hanging body, expanding hanging circular beads are arranged on the outer surface of the middle portion of the hanging body, sealing rubber rings are arranged on the outer surface of the lower portion of the hanging body, and a filter element net is arranged on the inner surface of the filter screening pipe. When the hanging filter component stretches into the hanging short connection component, the expanding hanging circular beads are clamped by the reducing hanging circular beads and are hung, and the sealing rubber rings and the body sealing section are in interference sealing. The hanging short connection component can be hung at any position of a water injection tubular column, and installation is flexible and reliable; the hanging filter component can be hung and can be conveniently fished, recovered and repeatedly replaced.
Description
Technical field
The present invention relates to a kind of water injection well water filter of technical field of petroleum extraction, especially a kind of water injection well down-hole string that is installed on, can implement to repeat the more down-hole dropping in and taking off type water filter of renew cartridge of pulling.
Background technology
In oil gas field waterflooding extraction process, in order to keep reservoir energy to realize stable high yield, carry out secondary waterflooding extraction.But in the injecting process, due to water conditioning process, technical problem and along journey, pollute and cause injected water mechanicalness impurity, bacterial clump to exceed standard, near wellbore zone formation blockage, cause following result:
1, cause water injection pressure to rise, water injecting consumption rises, and is unfavorable for oil field energy saving production;
2, for de-plugging, carry out the technical measures such as acidifying augmented injection, cause acidifying augmented injection expense to rise, be unfavorable for cost efficiency; Acidifying simultaneously and acidizing additive cause water pollution, are unfavorable for protection of the environment;
3, due to obstruction, water injection well cannot water filling maintain reservoir energy, causes reservoir energy to decline and exhaustion, and crude output decline and exhaustion, recovery ratio and recovery percent of reserves are low, and valuable petroleum resources are difficult to employ.
For above-mentioned drawback, existing water injection filter can not be realized the present situations such as the filtration of injection water quality end and water quality safety protection.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of water injection well down-hole end water filter is installed, and solves the defective drawback of bringing with variation water quality of oil gas field waterflooding extraction injection water quality, reaches the object of effective water filling.
Technical scheme of the present invention is: comprise the hung filter element that hangs short circuit parts and its internal activities installation; The tubular body that described suspension short circuit parts comprise both ends open with and the joint that is respectively equipped with of two ends, the undergauge that middle part inner surface is provided with from top to bottom successively hang shoulder and body seal section; Described hang filter element comprise hang body with and the filter sieve tube that connects of lower end, the inner surface on described suspension body top is provided with the external surface of salvaging groove, middle part and is provided with hole enlargement and hangs the external surface of shoulder, bottom and be provided with O-ring seal, and the inner surface of described filter sieve tube was provided with filter core net; Described hung filter element stretches into while hanging in short circuit parts, and described hole enlargement is hung shoulder and blocked and hang by undergauge suspension shoulder, simultaneously described O-ring seal and body seal section interference sealing.
Such scheme can further be improved to:
Described O-ring seal is spaced multiple tracks.
Described joint is thread connecting joint.
Principle of the present invention is: first this device installs the suspension short circuit parts of this device when water injection well job execution in precalculated position, then installs and can hang filter component in hanging short circuit parts, after completion stake, injected water is carried out to water filtration; In the injecting process, a large amount of mechanicalness impurity of defective water and bacterium colony are filtered and hold back by strainer, and now filter net jam, forms droop loss; Now at water injection well, pressure test lubricator is installed, is lowered to fishing tool, to hanging filter element, implement to salvage, after salvaging successfully, in lubricator, drop into new hung filter component, again carry out injected water filtration.Thereby realize in the water filtration of water filling flow process least significant end, set up final water quality protection protecting wall.
Compared with prior art, tool of the present invention has the following advantages:
1, adopt and hang short circuit parts connection water injection string top and the bottom, can hang on any degree of depth of water injection string, flexible for installation reliable;
2, can hang filter component and adopt suspension type, be convenient to salvage and throw in, repeat to change convenient and swift;
3, can hang filter component filtering material can, according to the flexible type selecting of different filtering accuracies, ensure and use science, reliability, safety.
Accompanying drawing explanation
Fig. 1 is the structural representation that hangs short circuit parts in the present invention;
Fig. 2 can hang the structural representation of filter component in the present invention;
In figure: 1, top connecting thread, 2, undergauge hangs shoulder, 3, body seal section, 4, bottom connecting thread, 5, hang body, 6, salvage groove, 7, hole enlargement hangs shoulder, 8, O-ring seal, 9, filter sieve tube, 10, cross filter core net.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
Referring to Fig. 1-2, a kind of down-hole dropping in and taking off type water filter, comprises the hung filter element that hangs short circuit parts and its internal activities installation; Hang tubular body that short circuit parts comprise both ends open with and the top connecting thread 1 that is provided with of upper end, the bottom connecting thread 4 that lower end is provided with, the undergauge that middle part inner surface is provided with from top to bottom successively hang shoulder 2 and body seal section 3; Can hang filter element comprise hang body 5 with and the filter sieve tube 9 that connects of lower end, the inner surface that hangs body 5 tops is provided with the external surface of salvaging groove 6, middle part and is provided with hole enlargement and hangs the external surface of shoulder 7, bottom and be provided with O-ring seal 8, the lower end closed of filter sieve tube 9, sidewall week are upwards evenly equipped with sieve aperture, and the inner surface of filter sieve tube 9 was provided with filter core net 10; Can hang filter element and stretch into while hanging in short circuit parts, hole enlargement is hung shoulder 7 and is blocked and hang by undergauge suspension shoulder 2, simultaneously O-ring seal 8 and the 3 interference sealings of body seal section.
Implementation process middle and upper part connecting thread 1 is connected with water injection well internal upper part oil pipe, by bottom connecting thread 4, be connected with bottom oil pipe, in the time can hanging filtration filter component input, hole enlargement is hung shoulder 7 and is blocked and hang by undergauge suspension shoulder 2, now O-ring seal 7 and the 3 interference sealings of body seal section, force injected water to pass through that filter core net 9 is implemented mechanical admixtures, bacterium colony filters and is retained down, and water filling hydraulic pressure is applied on withstand voltage filter sieve tube 10 by crossing filter core net 9, guarantee can be hung resistance to pressure and the work possibility of strainer.When after water filling is after a while filtered, cross filter core net 9 and hold back a large amount of mechanical admixtures etc. and cause filter core to stop up, now open water injection well, be lowered to interior fishing tool, drag for and salvage groove 6 and can hang filter component and pull out after water injection well, drop into the water filling that drives a well after new hung strainer.Sharpest edges of the present invention are to hang short circuit parts can hang on any degree of depth of water injection string, flexible for installation reliable; Can hang filter component and adopt suspension type, be convenient to salvage and throw in, repeat to change convenient and swift.It is simple in structure, easy construction, and cost is low, applied widely.
The above is the preferred embodiment of the present invention; it should be noted that; for those skilled in the art; under the premise without departing from the principles of the invention; likely to concrete size; or partial structurtes go out some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a down-hole dropping in and taking off type water filter, is characterized in that: comprise the hung filter element that hangs short circuit parts and its internal activities installation; The tubular body that described suspension short circuit parts comprise both ends open with and the joint that is respectively equipped with of two ends, the undergauge that middle part inner surface is provided with from top to bottom successively hang shoulder and body seal section; Described hang filter element comprise hang body with and the filter sieve tube that connects of lower end, the inner surface on described suspension body top is provided with the external surface of salvaging groove, middle part and is provided with hole enlargement and hangs the external surface of shoulder, bottom and be provided with O-ring seal, and the inner surface of described filter sieve tube was provided with filter core net; Described hung filter element stretches into while hanging in short circuit parts, and described hole enlargement is hung shoulder and blocked and hang by undergauge suspension shoulder, simultaneously described O-ring seal and body seal section interference sealing.
2. down-hole according to claim 1 dropping in and taking off type water filter, is characterized in that: described O-ring seal is spaced multiple tracks.
3. down-hole according to claim 1 and 2 dropping in and taking off type water filter, is characterized in that: described joint is thread connecting joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260219.5A CN104018817A (en) | 2014-06-12 | 2014-06-12 | Underground water filter capable of being thrown and fished |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260219.5A CN104018817A (en) | 2014-06-12 | 2014-06-12 | Underground water filter capable of being thrown and fished |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104018817A true CN104018817A (en) | 2014-09-03 |
Family
ID=51435777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410260219.5A Pending CN104018817A (en) | 2014-06-12 | 2014-06-12 | Underground water filter capable of being thrown and fished |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104018817A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653138A (en) * | 2015-01-30 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Dual-drum type gas well ground ball capturing device |
| CN106693504A (en) * | 2016-12-14 | 2017-05-24 | 中国石油天然气股份有限公司 | Underground filter capable of being thrown-in and pulled for water injection well |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2135060Y (en) * | 1992-10-19 | 1993-06-02 | 王建玺 | High-pressure filtering device for oil field water-flooding well |
| CN2401694Y (en) * | 1999-12-03 | 2000-10-18 | 袁强 | Hole top water treatment device for water injection well |
| US20080006413A1 (en) * | 2006-07-06 | 2008-01-10 | Schlumberger Technology Corporation | Well Servicing Methods and Systems Employing a Triggerable Filter Medium Sealing Composition |
| CN201053309Y (en) * | 2007-06-27 | 2008-04-30 | 王中华 | Down-hole filter for water filling well |
| CN201301698Y (en) * | 2008-11-28 | 2009-09-02 | 天津市大港仪表有限公司 | Wellhead filter for waterflooding in oil field |
| CN201419046Y (en) * | 2009-03-17 | 2010-03-10 | 崔炳辉 | Incoming water filter for water injection wells |
| CN202064862U (en) * | 2011-05-13 | 2011-12-07 | 中国石油天然气股份有限公司 | Continuous sand washing device of immobile well head |
| CN202802892U (en) * | 2012-08-06 | 2013-03-20 | 中国石油化工股份有限公司 | Underground filter and underground filtering water distributor |
| CN203050598U (en) * | 2013-02-21 | 2013-07-10 | 德州联合石油机械有限公司 | On-line pressure sealing composite structure of suspension body of casing head |
-
2014
- 2014-06-12 CN CN201410260219.5A patent/CN104018817A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2135060Y (en) * | 1992-10-19 | 1993-06-02 | 王建玺 | High-pressure filtering device for oil field water-flooding well |
| CN2401694Y (en) * | 1999-12-03 | 2000-10-18 | 袁强 | Hole top water treatment device for water injection well |
| US20080006413A1 (en) * | 2006-07-06 | 2008-01-10 | Schlumberger Technology Corporation | Well Servicing Methods and Systems Employing a Triggerable Filter Medium Sealing Composition |
| CN201053309Y (en) * | 2007-06-27 | 2008-04-30 | 王中华 | Down-hole filter for water filling well |
| CN201301698Y (en) * | 2008-11-28 | 2009-09-02 | 天津市大港仪表有限公司 | Wellhead filter for waterflooding in oil field |
| CN201419046Y (en) * | 2009-03-17 | 2010-03-10 | 崔炳辉 | Incoming water filter for water injection wells |
| CN202064862U (en) * | 2011-05-13 | 2011-12-07 | 中国石油天然气股份有限公司 | Continuous sand washing device of immobile well head |
| CN202802892U (en) * | 2012-08-06 | 2013-03-20 | 中国石油化工股份有限公司 | Underground filter and underground filtering water distributor |
| CN203050598U (en) * | 2013-02-21 | 2013-07-10 | 德州联合石油机械有限公司 | On-line pressure sealing composite structure of suspension body of casing head |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653138A (en) * | 2015-01-30 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Dual-drum type gas well ground ball capturing device |
| CN106693504A (en) * | 2016-12-14 | 2017-05-24 | 中国石油天然气股份有限公司 | Underground filter capable of being thrown-in and pulled for water injection well |
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Application publication date: 20140903 |