Preparation method and application of decompression and augmented injection agent for water injection well
The invention provides a preparation method and application of a decompression and augmented injection agent for a water injection well. The decompression and augmented injection agent comprises the following components: 2-5% of an organic matter degradation agent, 10-15% of a chelating agent, 0.5%...
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creator | HE JING WANG MANXUE |
description | The invention provides a preparation method and application of a decompression and augmented injection agent for a water injection well. The decompression and augmented injection agent comprises the following components: 2-5% of an organic matter degradation agent, 10-15% of a chelating agent, 0.5% of a scale inhibitor, 0.5% of a composite surfactant and the balance of water. The invention further relates to application of the decompression and augmented injection agent for a water injection well. According to the invention, the chelate is subjected to complex reaction with inorganic scales in a water injection string, a near-well bore zone and a deep reservoir, so that the inorganic scales are converted into soluble complexes; the vegetable gum and the polymer residues are degraded by using an organic blocking remover; a composite surfactant with ultra-low interfacial tension is used for stripping residual oil on the surface of stratum rock, and finally plug removal and oil displacement of immediate vicinity |
format | Patent |
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The decompression and augmented injection agent comprises the following components: 2-5% of an organic matter degradation agent, 10-15% of a chelating agent, 0.5% of a scale inhibitor, 0.5% of a composite surfactant and the balance of water. The invention further relates to application of the decompression and augmented injection agent for a water injection well. According to the invention, the chelate is subjected to complex reaction with inorganic scales in a water injection string, a near-well bore zone and a deep reservoir, so that the inorganic scales are converted into soluble complexes; the vegetable gum and the polymer residues are degraded by using an organic blocking remover; a composite surfactant with ultra-low interfacial tension is used for stripping residual oil on the surface of stratum rock, and finally plug removal and oil displacement of immediate vicinity</description><language>chi ; eng</language><subject>ADHESIVES ; CHEMISTRY ; DYES ; EARTH DRILLING ; EARTH DRILLING, e.g. DEEP DRILLING ; FIXED CONSTRUCTIONS ; 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 ; PAINTS ; POLISHES</subject><creationdate>2021</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=20210806&DB=EPODOC&CC=CN&NR=113214812A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210806&DB=EPODOC&CC=CN&NR=113214812A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HE JING</creatorcontrib><creatorcontrib>WANG MANXUE</creatorcontrib><title>Preparation method and application of decompression and augmented injection agent for water injection well</title><description>The invention provides a preparation method and application of a decompression and augmented injection agent for a water injection well. The decompression and augmented injection agent comprises the following components: 2-5% of an organic matter degradation agent, 10-15% of a chelating agent, 0.5% of a scale inhibitor, 0.5% of a composite surfactant and the balance of water. The invention further relates to application of the decompression and augmented injection agent for a water injection well. According to the invention, the chelate is subjected to complex reaction with inorganic scales in a water injection string, a near-well bore zone and a deep reservoir, so that the inorganic scales are converted into soluble complexes; the vegetable gum and the polymer residues are degraded by using an organic blocking remover; a composite surfactant with ultra-low interfacial tension is used for stripping residual oil on the surface of stratum rock, and finally plug removal and oil displacement of immediate vicinity</description><subject>ADHESIVES</subject><subject>CHEMISTRY</subject><subject>DYES</subject><subject>EARTH DRILLING</subject><subject>EARTH DRILLING, e.g. DEEP DRILLING</subject><subject>FIXED CONSTRUCTIONS</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>PAINTS</subject><subject>POLISHES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNir0KwjAYRbs4iPoOnw_gkNbBVYriJA7u5SO5qSn5I4n09a3VwdHhcuGcs6yGW0LkxMUETw7lERSxnxajNfKDgyYFGVxMyPkN5uDZO_gCRcYPkHPI_URIh0QjF6QfM8LadbXQbDM2319V2_Pp3l52iKFDjizhUbr2KkRTi_1B1Mfmn-YF7MtBnA</recordid><startdate>20210806</startdate><enddate>20210806</enddate><creator>HE JING</creator><creator>WANG MANXUE</creator><scope>EVB</scope></search><sort><creationdate>20210806</creationdate><title>Preparation method and application of decompression and augmented injection agent for water injection well</title><author>HE JING ; WANG MANXUE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN113214812A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2021</creationdate><topic>ADHESIVES</topic><topic>CHEMISTRY</topic><topic>DYES</topic><topic>EARTH DRILLING</topic><topic>EARTH DRILLING, e.g. DEEP DRILLING</topic><topic>FIXED CONSTRUCTIONS</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>PAINTS</topic><topic>POLISHES</topic><toplevel>online_resources</toplevel><creatorcontrib>HE JING</creatorcontrib><creatorcontrib>WANG MANXUE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HE JING</au><au>WANG MANXUE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Preparation method and application of decompression and augmented injection agent for water injection well</title><date>2021-08-06</date><risdate>2021</risdate><abstract>The invention provides a preparation method and application of a decompression and augmented injection agent for a water injection well. The decompression and augmented injection agent comprises the following components: 2-5% of an organic matter degradation agent, 10-15% of a chelating agent, 0.5% of a scale inhibitor, 0.5% of a composite surfactant and the balance of water. The invention further relates to application of the decompression and augmented injection agent for a water injection well. According to the invention, the chelate is subjected to complex reaction with inorganic scales in a water injection string, a near-well bore zone and a deep reservoir, so that the inorganic scales are converted into soluble complexes; the vegetable gum and the polymer residues are degraded by using an organic blocking remover; a composite surfactant with ultra-low interfacial tension is used for stripping residual oil on the surface of stratum rock, and finally plug removal and oil displacement of immediate vicinity</abstract><oa>free_for_read</oa></addata></record> |
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language | chi ; eng |
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subjects | ADHESIVES CHEMISTRY DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS 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 PAINTS POLISHES |
title | Preparation method and application of decompression and augmented injection agent for water injection well |
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