METHOD OF SELECTIVELY INHIBITING GELATION OF HYDROPHOBICALLY ASSOCIATING SUBSTANCES
FIELD: polymer materials. ^ SUBSTANCE: invention, in particular, relates to hydrophobically modified water-soluble polymers or complexes of the latter with surfactants and discloses a method for selectively inhibiting gelation of hydrophobically associating gel-forming liquid containing hydrophobica...
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| creator | ZAROSLOV JURIJ DMITRIEVICH FILIPPOVA OL'GA EVGEN'EVNA KHOKHLOV ALEKSEJ REMOVICH BLAGODATSKIKH INEHSA VASIL'EVNA |
| description | FIELD: polymer materials. ^ SUBSTANCE: invention, in particular, relates to hydrophobically modified water-soluble polymers or complexes of the latter with surfactants and discloses a method for selectively inhibiting gelation of hydrophobically associating gel-forming liquid containing hydrophobically associating water-soluble polymers or complexes of the latter with surfactants. Advantage of invention resides in that, when thus inhibited liquid contacts with a hydrocarbon medium, inhibitory effect is preserved and gelation does not occur and, when liquid contacts with an aqueous medium, inhibitory effect is cancelled and gelation takes place. Inhibitor is selected such that it is well soluble in aqueous media but insoluble in hydrocarbon media, for example ethanol or methanol. Hydrophobically associating substance in associating gel-forming liquid is, in particular, hydrophobically modified water-soluble polymer based on polyacrylamide containing 84.4 or 88.8 mol % acrylamide units, 1.5 mol % n-dodecylacrylamide units, and 14.1 or 9.7 mol % sodium acrylate units. Surfactant used in polymer complexes is, in particular, cetylpyridinium chloride. Invention further discloses associating gel-forming liquid containing 1 to 10% by weight of hydrophobically associating substances and also composition for treating oil well, which comprises associating liquid. Disclosed is also a method for selectively blocking water entry into producing oil well from underground water-bearing formations. Invention can thus be used in oil production to control water inflows in oil-production well allowing restriction of water entry into well without unfavorably affecting oil production process. ^ EFFECT: facilitated gelation control in polymer-containing liquids. ^ 4 cl, 2 dwg, 1 tbl |
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Advantage of invention resides in that, when thus inhibited liquid contacts with a hydrocarbon medium, inhibitory effect is preserved and gelation does not occur and, when liquid contacts with an aqueous medium, inhibitory effect is cancelled and gelation takes place. Inhibitor is selected such that it is well soluble in aqueous media but insoluble in hydrocarbon media, for example ethanol or methanol. Hydrophobically associating substance in associating gel-forming liquid is, in particular, hydrophobically modified water-soluble polymer based on polyacrylamide containing 84.4 or 88.8 mol % acrylamide units, 1.5 mol % n-dodecylacrylamide units, and 14.1 or 9.7 mol % sodium acrylate units. Surfactant used in polymer complexes is, in particular, cetylpyridinium chloride. Invention further discloses associating gel-forming liquid containing 1 to 10% by weight of hydrophobically associating substances and also composition for treating oil well, which comprises associating liquid. Disclosed is also a method for selectively blocking water entry into producing oil well from underground water-bearing formations. Invention can thus be used in oil production to control water inflows in oil-production well allowing restriction of water entry into well without unfavorably affecting oil production process. ^ EFFECT: facilitated gelation control in polymer-containing liquids. ^ 4 cl, 2 dwg, 1 tbl</description><language>eng ; rus</language><subject>ADHESIVES ; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; DYES ; EARTH DRILLING ; EARTH DRILLING, e.g. DEEP DRILLING ; FIXED CONSTRUCTIONS ; GENERAL PROCESSES OF COMPOUNDING ; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE ; METALLURGY ; MINING ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS ; ORGANIC MACROMOLECULAR COMPOUNDS ; PAINTS ; POLISHES ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; WORKING-UP</subject><creationdate>2006</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=20060520&DB=EPODOC&CC=RU&NR=2276675C2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20060520&DB=EPODOC&CC=RU&NR=2276675C2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZAROSLOV JURIJ DMITRIEVICH</creatorcontrib><creatorcontrib>FILIPPOVA OL'GA EVGEN'EVNA</creatorcontrib><creatorcontrib>KHOKHLOV ALEKSEJ REMOVICH</creatorcontrib><creatorcontrib>BLAGODATSKIKH INEHSA VASIL'EVNA</creatorcontrib><title>METHOD OF SELECTIVELY INHIBITING GELATION OF HYDROPHOBICALLY ASSOCIATING SUBSTANCES</title><description>FIELD: polymer materials. ^ SUBSTANCE: invention, in particular, relates to hydrophobically modified water-soluble polymers or complexes of the latter with surfactants and discloses a method for selectively inhibiting gelation of hydrophobically associating gel-forming liquid containing hydrophobically associating water-soluble polymers or complexes of the latter with surfactants. Advantage of invention resides in that, when thus inhibited liquid contacts with a hydrocarbon medium, inhibitory effect is preserved and gelation does not occur and, when liquid contacts with an aqueous medium, inhibitory effect is cancelled and gelation takes place. Inhibitor is selected such that it is well soluble in aqueous media but insoluble in hydrocarbon media, for example ethanol or methanol. Hydrophobically associating substance in associating gel-forming liquid is, in particular, hydrophobically modified water-soluble polymer based on polyacrylamide containing 84.4 or 88.8 mol % acrylamide units, 1.5 mol % n-dodecylacrylamide units, and 14.1 or 9.7 mol % sodium acrylate units. Surfactant used in polymer complexes is, in particular, cetylpyridinium chloride. Invention further discloses associating gel-forming liquid containing 1 to 10% by weight of hydrophobically associating substances and also composition for treating oil well, which comprises associating liquid. Disclosed is also a method for selectively blocking water entry into producing oil well from underground water-bearing formations. Invention can thus be used in oil production to control water inflows in oil-production well allowing restriction of water entry into well without unfavorably affecting oil production process. ^ EFFECT: facilitated gelation control in polymer-containing liquids. ^ 4 cl, 2 dwg, 1 tbl</description><subject>ADHESIVES</subject><subject>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>DYES</subject><subject>EARTH DRILLING</subject><subject>EARTH DRILLING, e.g. DEEP DRILLING</subject><subject>FIXED CONSTRUCTIONS</subject><subject>GENERAL PROCESSES OF COMPOUNDING</subject><subject>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</subject><subject>METALLURGY</subject><subject>MINING</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>PAINTS</subject><subject>POLISHES</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>WORKING-UP</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2006</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyr0KwjAQAOAsDqK-Q17AJWI7J9drcxAT6V0LnUqROIkW6vvjDz6A07d8a8UnFJ8qnWrNGBCEegyDpujJkVBsdIPBCqX4KX6o2nT2yRHY8G6WOQHZ7-POsdgIyFu1uk63Je9-bpSuUcDv8_wY8zJPl3zPz7HtjCmLojyCOfxRXtYpMBs</recordid><startdate>20060520</startdate><enddate>20060520</enddate><creator>ZAROSLOV JURIJ DMITRIEVICH</creator><creator>FILIPPOVA OL'GA EVGEN'EVNA</creator><creator>KHOKHLOV ALEKSEJ REMOVICH</creator><creator>BLAGODATSKIKH INEHSA VASIL'EVNA</creator><scope>EVB</scope></search><sort><creationdate>20060520</creationdate><title>METHOD OF SELECTIVELY INHIBITING GELATION OF HYDROPHOBICALLY ASSOCIATING SUBSTANCES</title><author>ZAROSLOV JURIJ DMITRIEVICH ; FILIPPOVA OL'GA EVGEN'EVNA ; KHOKHLOV ALEKSEJ REMOVICH ; BLAGODATSKIKH INEHSA VASIL'EVNA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_RU2276675C23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; rus</language><creationdate>2006</creationdate><topic>ADHESIVES</topic><topic>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>DYES</topic><topic>EARTH DRILLING</topic><topic>EARTH DRILLING, e.g. DEEP DRILLING</topic><topic>FIXED CONSTRUCTIONS</topic><topic>GENERAL PROCESSES OF COMPOUNDING</topic><topic>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</topic><topic>METALLURGY</topic><topic>MINING</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>PAINTS</topic><topic>POLISHES</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>WORKING-UP</topic><toplevel>online_resources</toplevel><creatorcontrib>ZAROSLOV JURIJ DMITRIEVICH</creatorcontrib><creatorcontrib>FILIPPOVA OL'GA EVGEN'EVNA</creatorcontrib><creatorcontrib>KHOKHLOV ALEKSEJ REMOVICH</creatorcontrib><creatorcontrib>BLAGODATSKIKH INEHSA VASIL'EVNA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ZAROSLOV JURIJ DMITRIEVICH</au><au>FILIPPOVA OL'GA EVGEN'EVNA</au><au>KHOKHLOV ALEKSEJ REMOVICH</au><au>BLAGODATSKIKH INEHSA VASIL'EVNA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD OF SELECTIVELY INHIBITING GELATION OF HYDROPHOBICALLY ASSOCIATING SUBSTANCES</title><date>2006-05-20</date><risdate>2006</risdate><abstract>FIELD: polymer materials. ^ SUBSTANCE: invention, in particular, relates to hydrophobically modified water-soluble polymers or complexes of the latter with surfactants and discloses a method for selectively inhibiting gelation of hydrophobically associating gel-forming liquid containing hydrophobically associating water-soluble polymers or complexes of the latter with surfactants. Advantage of invention resides in that, when thus inhibited liquid contacts with a hydrocarbon medium, inhibitory effect is preserved and gelation does not occur and, when liquid contacts with an aqueous medium, inhibitory effect is cancelled and gelation takes place. Inhibitor is selected such that it is well soluble in aqueous media but insoluble in hydrocarbon media, for example ethanol or methanol. Hydrophobically associating substance in associating gel-forming liquid is, in particular, hydrophobically modified water-soluble polymer based on polyacrylamide containing 84.4 or 88.8 mol % acrylamide units, 1.5 mol % n-dodecylacrylamide units, and 14.1 or 9.7 mol % sodium acrylate units. Surfactant used in polymer complexes is, in particular, cetylpyridinium chloride. Invention further discloses associating gel-forming liquid containing 1 to 10% by weight of hydrophobically associating substances and also composition for treating oil well, which comprises associating liquid. Disclosed is also a method for selectively blocking water entry into producing oil well from underground water-bearing formations. Invention can thus be used in oil production to control water inflows in oil-production well allowing restriction of water entry into well without unfavorably affecting oil production process. ^ EFFECT: facilitated gelation control in polymer-containing liquids. ^ 4 cl, 2 dwg, 1 tbl</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GENERAL PROCESSES OF COMPOUNDING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP |
| title | METHOD OF SELECTIVELY INHIBITING GELATION OF HYDROPHOBICALLY ASSOCIATING SUBSTANCES |
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