Low-density cement used for well cementation
The invention provides low-density cement used for well cementation. The low-density cement comprises the following components in percentages by mass: 5%-8% of high-strength microbeads, 2%-7% of floating beads, 2%-3% of perlite, 55%-70% of oil wells G-grade cement, 8%-12% of silica fume, 3%-9% of fl...
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| creator | JIANG ZHUANJIE |
| description | The invention provides low-density cement used for well cementation. The low-density cement comprises the following components in percentages by mass: 5%-8% of high-strength microbeads, 2%-7% of floating beads, 2%-3% of perlite, 55%-70% of oil wells G-grade cement, 8%-12% of silica fume, 3%-9% of fly ash, 2% of a fluid loss agent, 2%-3% of a stabilizer, 1% of an expanding agent, 0.6%-0.75% of an early strength agent, and 0.25%-0.4% of a drag reducer. The low-density cement slurry used for the well cementation provided by the invention has high high-temperature stability, a constant high-pressure density and high early strength, has higher plastic viscosity, dynamic shearing force and thixotropy at high temperature, and is suitable for a well cementing process of high-yield oil wells, gas wells, deep wells, ultra-deep wells, horizontal wells and other wells with higher requirements.
种固井用低密度水泥，其组分和配比按质量分数如下：高强度微珠5％～8％，漂珠2％～7％，珍珠岩2％～3％，油井G级水泥55％～70％，微硅粉8％～12％，粉煤灰3％～9％，降失水剂2％，稳定剂2％～3％，膨胀剂1％，早强剂0.6％～0.75％，减阻剂0.25％ |
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种固井用低密度水泥，其组分和配比按质量分数如下：高强度微珠5％～8％，漂珠2％～7％，珍珠岩2％～3％，油井G级水泥55％～70％，微硅粉8％～12％，粉煤灰3％～9％，降失水剂2％，稳定剂2％～3％，膨胀剂1％，早强剂0.6％～0.75％，减阻剂0.25％</description><language>chi ; eng</language><subject>ADHESIVES ; ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; CHEMISTRY ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; CONCRETE ; DYES ; LIME, MAGNESIA ; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; PAINTS ; POLISHES ; REFRACTORIES ; SLAG ; TREATMENT OF NATURAL STONE</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=20180814&DB=EPODOC&CC=CN&NR=108395154A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25553,76306</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180814&DB=EPODOC&CC=CN&NR=108395154A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>JIANG ZHUANJIE</creatorcontrib><title>Low-density cement used for well cementation</title><description>The invention provides low-density cement used for well cementation. The low-density cement comprises the following components in percentages by mass: 5%-8% of high-strength microbeads, 2%-7% of floating beads, 2%-3% of perlite, 55%-70% of oil wells G-grade cement, 8%-12% of silica fume, 3%-9% of fly ash, 2% of a fluid loss agent, 2%-3% of a stabilizer, 1% of an expanding agent, 0.6%-0.75% of an early strength agent, and 0.25%-0.4% of a drag reducer. The low-density cement slurry used for the well cementation provided by the invention has high high-temperature stability, a constant high-pressure density and high early strength, has higher plastic viscosity, dynamic shearing force and thixotropy at high temperature, and is suitable for a well cementing process of high-yield oil wells, gas wells, deep wells, ultra-deep wells, horizontal wells and other wells with higher requirements.
种固井用低密度水泥，其组分和配比按质量分数如下：高强度微珠5％～8％，漂珠2％～7％，珍珠岩2％～3％，油井G级水泥55％～70％，微硅粉8％～12％，粉煤灰3％～9％，降失水剂2％，稳定剂2％～3％，膨胀剂1％，早强剂0.6％～0.75％，减阻剂0.25％</description><subject>ADHESIVES</subject><subject>ARTIFICIAL STONE</subject><subject>CEMENTS</subject><subject>CERAMICS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</subject><subject>CONCRETE</subject><subject>DYES</subject><subject>LIME, MAGNESIA</subject><subject>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>PAINTS</subject><subject>POLISHES</subject><subject>REFRACTORIES</subject><subject>SLAG</subject><subject>TREATMENT OF NATURAL STONE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNDxyS_XTUnNK84sqVRITs1NzStRKC1OTVFIyy9SKE_NyYEKJpZk5ufxMLCmJeYUp_JCaW4GRTfXEGcP3dSC_PjU4oLE5NS81JJ4Zz9DAwtjS1NDUxNHY2LUAACVgynZ</recordid><startdate>20180814</startdate><enddate>20180814</enddate><creator>JIANG ZHUANJIE</creator><scope>EVB</scope></search><sort><creationdate>20180814</creationdate><title>Low-density cement used for well cementation</title><author>JIANG ZHUANJIE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN108395154A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2018</creationdate><topic>ADHESIVES</topic><topic>ARTIFICIAL STONE</topic><topic>CEMENTS</topic><topic>CERAMICS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</topic><topic>CONCRETE</topic><topic>DYES</topic><topic>LIME, MAGNESIA</topic><topic>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</topic><topic>METALLURGY</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>PAINTS</topic><topic>POLISHES</topic><topic>REFRACTORIES</topic><topic>SLAG</topic><topic>TREATMENT OF NATURAL STONE</topic><toplevel>online_resources</toplevel><creatorcontrib>JIANG ZHUANJIE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>JIANG ZHUANJIE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Low-density cement used for well cementation</title><date>2018-08-14</date><risdate>2018</risdate><abstract>The invention provides low-density cement used for well cementation. The low-density cement comprises the following components in percentages by mass: 5%-8% of high-strength microbeads, 2%-7% of floating beads, 2%-3% of perlite, 55%-70% of oil wells G-grade cement, 8%-12% of silica fume, 3%-9% of fly ash, 2% of a fluid loss agent, 2%-3% of a stabilizer, 1% of an expanding agent, 0.6%-0.75% of an early strength agent, and 0.25%-0.4% of a drag reducer. The low-density cement slurry used for the well cementation provided by the invention has high high-temperature stability, a constant high-pressure density and high early strength, has higher plastic viscosity, dynamic shearing force and thixotropy at high temperature, and is suitable for a well cementing process of high-yield oil wells, gas wells, deep wells, ultra-deep wells, horizontal wells and other wells with higher requirements.
种固井用低密度水泥，其组分和配比按质量分数如下：高强度微珠5％～8％，漂珠2％～7％，珍珠岩2％～3％，油井G级水泥55％～70％，微硅粉8％～12％，粉煤灰3％～9％，降失水剂2％，稳定剂2％～3％，膨胀剂1％，早强剂0.6％～0.75％，减阻剂0.25％</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DYES LIME, MAGNESIA MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES REFRACTORIES SLAG TREATMENT OF NATURAL STONE |
| title | Low-density cement used for well cementation |
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