发明名称 |
AN INVERT EMULSION DRILLING FLUID CONTAINING A HYGROSCOPIC LIQUID AND A POLYMERIC SUSPENDING AGENT |
摘要 |
An invert emulsion drilling fluid comprises: an external phase, wherein the external phase of the drilling fluid comprises a hydrocarbon liquid; an internal phase, wherein the internal phase of the drilling fluid comprises a hygroscopic liquid; and a suspending agent, wherein the suspending agent is a polymer comprising urea linkages or urea and urethane linkages. The hygroscopic liquid comprises a salt and a suitable solvent or comprises an alcohol. The drilling fluid can exclude an organophilic clay or organophilic lignite. A method of using the invert emulsion drilling fluid comprises: introducing the drilling fluid into at least a portion of a subterranean formation. |
申请公布号 |
EP2734598(B1) |
申请公布日期 |
2016.03.02 |
申请号 |
EP20120754111 |
申请日期 |
2012.07.06 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
WAGLE, VIKRANT B.;MAGHRABI, SHADAAB S. |
分类号 |
C09K8/36;C09K8/12 |
主分类号 |
C09K8/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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