发明名称 |
SHEAR-SENSITIVE PLUGGING FLUID FOR PLUGGING AND A METHOD FOR PLUGGING A SUBTERRANEAN FORMATION ZONE |
摘要 |
A PLUGGING FLUID FOR PLUGGING A SUBTERRANEAN FORMATION ZONE SURROUNDING A DRILL HOLE COMPRISES AN EMULSION COMPRISING A DISPERSED AQUEOUS PHASE CONTAINING AN AQUEOUS BASE AND A CONTINUOUS HYDROPHOBIC PHASE CONTAINING A POLYMER CONSISTING OF A GRAFTED CELLULOSE ETHER DERIVATIVE, A SURFACTANT AND A CROSSLINKING ACTIVATOR OF THE POLYMER. THE POLYNER IS PREFEREBLY 2-HYDROXYETHYL CELLULOSE GRAFTED WITH VINYL PHOSPHONIC ACID. UPON SHEARING, PREFERABLY THROUGH THE DRILLING BIT, THE EMULSION INVERTS SO THAT THE RUPTURE OF THE EMULSION DROPLETS RELEASES THE CROSSLINKING ACTIVATOR THE WATER PHASE THUS FORMING A GEL STRUCTURE.
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申请公布号 |
MY129825(A) |
申请公布日期 |
2007.05.31 |
申请号 |
MY2002PI02740 |
申请日期 |
2002.07.19 |
申请人 |
SCHLUMBERGER TECHNOLOGY B.V. |
发明人 |
JACK MABERRY;GREG GARRISON;ANDRE GARNIER |
分类号 |
E21B43/02;C09K8/502;C09K8/512;C09K8/565;C09K8/575;E21B33/138 |
主分类号 |
E21B43/02 |
代理机构 |
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主权项 |
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地址 |
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