Method for leakage pre-plugging of well cemented through lining pipe
The invention relates to the technical field of oilfield lining pipe reinforcing operation, in particular to a method for leakage pre-plugging of a well cemented through a lining pipe. The method comprises the following steps that 1, a drill rod is tripped to 30-50 m of the upper portion of a perfor...
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| creator | WANG DANXIA CAO LEI ZHENG GUANHUI WU JIE SUN JIAHAN ZHANG FAN ZHANG ZHILIANG LIU GUOHUA SONG GUOQIANG DONG JIAFENG LIU ZHOUXU SONG YUANFEI LI YANG LIU LIANJIE XU XIAOHUI FENG RUQIANG HUANG YITIAN ZHANG BOWEN WANG ZHIGUO WANG TAO LIU YINGQING ZHAO ZHENDONG LI GUANGQIAN CHENG JIATONG WU XIAONI TIAN HUA QI YING'AN ZHANG DAJUN WANG XU LI JUNYU CHEN CHANGYONG WANG JUNWEI |
| description | The invention relates to the technical field of oilfield lining pipe reinforcing operation, in particular to a method for leakage pre-plugging of a well cemented through a lining pipe. The method comprises the following steps that 1, a drill rod is tripped to 30-50 m of the upper portion of a perforation interval or a sleeve leakage point, and a packer is arranged on the position with 80-120 m distance from the upper portion of the perforation interval or the sleeve leakage point; 2, well flushing fluid is positively injected for one week, and then the packer is set; and 3, a plugging agent Ais injected to plug the perforation interval or the sleeve leakage point in advance, and the plugging agent A is composed of a water-based drive-adjusting reagent, a lignin particle plugging agent andwater. According to the method, before well cementing construction, chemical agents are injected to pre-plug the well sections, with cement slurry prone to loss, of the perforation interval, a leakage loss point, the sleeve l |
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The method comprises the following steps that 1, a drill rod is tripped to 30-50 m of the upper portion of a perforation interval or a sleeve leakage point, and a packer is arranged on the position with 80-120 m distance from the upper portion of the perforation interval or the sleeve leakage point; 2, well flushing fluid is positively injected for one week, and then the packer is set; and 3, a plugging agent Ais injected to plug the perforation interval or the sleeve leakage point in advance, and the plugging agent A is composed of a water-based drive-adjusting reagent, a lignin particle plugging agent andwater. According to the method, before well cementing construction, chemical agents are injected to pre-plug the well sections, with cement slurry prone to loss, of the perforation interval, a leakage loss point, the sleeve l</description><language>chi ; eng</language><subject>EARTH DRILLING ; EARTH DRILLING, e.g. DEEP DRILLING ; FIXED CONSTRUCTIONS ; MINING ; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181116&DB=EPODOC&CC=CN&NR=108825158A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181116&DB=EPODOC&CC=CN&NR=108825158A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WANG DANXIA</creatorcontrib><creatorcontrib>CAO LEI</creatorcontrib><creatorcontrib>ZHENG GUANHUI</creatorcontrib><creatorcontrib>WU JIE</creatorcontrib><creatorcontrib>SUN JIAHAN</creatorcontrib><creatorcontrib>ZHANG FAN</creatorcontrib><creatorcontrib>ZHANG ZHILIANG</creatorcontrib><creatorcontrib>LIU GUOHUA</creatorcontrib><creatorcontrib>SONG GUOQIANG</creatorcontrib><creatorcontrib>DONG JIAFENG</creatorcontrib><creatorcontrib>LIU ZHOUXU</creatorcontrib><creatorcontrib>SONG YUANFEI</creatorcontrib><creatorcontrib>LI YANG</creatorcontrib><creatorcontrib>LIU LIANJIE</creatorcontrib><creatorcontrib>XU XIAOHUI</creatorcontrib><creatorcontrib>FENG RUQIANG</creatorcontrib><creatorcontrib>HUANG YITIAN</creatorcontrib><creatorcontrib>ZHANG BOWEN</creatorcontrib><creatorcontrib>WANG ZHIGUO</creatorcontrib><creatorcontrib>WANG TAO</creatorcontrib><creatorcontrib>LIU YINGQING</creatorcontrib><creatorcontrib>ZHAO ZHENDONG</creatorcontrib><creatorcontrib>LI GUANGQIAN</creatorcontrib><creatorcontrib>CHENG JIATONG</creatorcontrib><creatorcontrib>WU XIAONI</creatorcontrib><creatorcontrib>TIAN HUA</creatorcontrib><creatorcontrib>QI YING'AN</creatorcontrib><creatorcontrib>ZHANG DAJUN</creatorcontrib><creatorcontrib>WANG XU</creatorcontrib><creatorcontrib>LI JUNYU</creatorcontrib><creatorcontrib>CHEN CHANGYONG</creatorcontrib><creatorcontrib>WANG JUNWEI</creatorcontrib><title>Method for leakage pre-plugging of well cemented through lining pipe</title><description>The invention relates to the technical field of oilfield lining pipe reinforcing operation, in particular to a method for leakage pre-plugging of a well cemented through a lining pipe. The method comprises the following steps that 1, a drill rod is tripped to 30-50 m of the upper portion of a perforation interval or a sleeve leakage point, and a packer is arranged on the position with 80-120 m distance from the upper portion of the perforation interval or the sleeve leakage point; 2, well flushing fluid is positively injected for one week, and then the packer is set; and 3, a plugging agent Ais injected to plug the perforation interval or the sleeve leakage point in advance, and the plugging agent A is composed of a water-based drive-adjusting reagent, a lignin particle plugging agent andwater. According to the method, before well cementing construction, chemical agents are injected to pre-plug the well sections, with cement slurry prone to loss, of the perforation interval, a leakage loss point, the sleeve l</description><subject>EARTH DRILLING</subject><subject>EARTH DRILLING, e.g. DEEP DRILLING</subject><subject>FIXED CONSTRUCTIONS</subject><subject>MINING</subject><subject>OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHDxTS3JyE9RSMsvUshJTcxOTE9VKChK1S3IKU1Pz8xLV8hPUyhPzclRSE7NTc0rSU1RKMkoyi9Nz1DIycwDyRdkFqTyMLCmJeYUp_JCaW4GRTfXEGcP3dSC_PjU4oLE5NS81JJ4Zz9DAwsLI1NDUwtHY2LUAACRkTKY</recordid><startdate>20181116</startdate><enddate>20181116</enddate><creator>WANG DANXIA</creator><creator>CAO LEI</creator><creator>ZHENG GUANHUI</creator><creator>WU JIE</creator><creator>SUN JIAHAN</creator><creator>ZHANG FAN</creator><creator>ZHANG ZHILIANG</creator><creator>LIU GUOHUA</creator><creator>SONG GUOQIANG</creator><creator>DONG JIAFENG</creator><creator>LIU ZHOUXU</creator><creator>SONG YUANFEI</creator><creator>LI YANG</creator><creator>LIU LIANJIE</creator><creator>XU XIAOHUI</creator><creator>FENG RUQIANG</creator><creator>HUANG YITIAN</creator><creator>ZHANG BOWEN</creator><creator>WANG ZHIGUO</creator><creator>WANG TAO</creator><creator>LIU YINGQING</creator><creator>ZHAO ZHENDONG</creator><creator>LI GUANGQIAN</creator><creator>CHENG JIATONG</creator><creator>WU XIAONI</creator><creator>TIAN HUA</creator><creator>QI YING'AN</creator><creator>ZHANG DAJUN</creator><creator>WANG XU</creator><creator>LI JUNYU</creator><creator>CHEN CHANGYONG</creator><creator>WANG JUNWEI</creator><scope>EVB</scope></search><sort><creationdate>20181116</creationdate><title>Method for leakage pre-plugging of well cemented through lining pipe</title><author>WANG DANXIA ; 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The method comprises the following steps that 1, a drill rod is tripped to 30-50 m of the upper portion of a perforation interval or a sleeve leakage point, and a packer is arranged on the position with 80-120 m distance from the upper portion of the perforation interval or the sleeve leakage point; 2, well flushing fluid is positively injected for one week, and then the packer is set; and 3, a plugging agent Ais injected to plug the perforation interval or the sleeve leakage point in advance, and the plugging agent A is composed of a water-based drive-adjusting reagent, a lignin particle plugging agent andwater. According to the method, before well cementing construction, chemical agents are injected to pre-plug the well sections, with cement slurry prone to loss, of the perforation interval, a leakage loss point, the sleeve l</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS |
| title | Method for leakage pre-plugging of well cemented through lining pipe |
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