Invention Grant
- Patent Title: Visco-elastic surfactant spacers
- Patent Title (中): 粘弹性表面活性剂垫片
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Application No.: US12808308Application Date: 2008-12-23
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Publication No.: US08689874B2Publication Date: 2014-04-08
- Inventor: Yiyan Chen , Jesse Lee , Bruno Drochon
- Applicant: Yiyan Chen , Jesse Lee , Bruno Drochon
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent Michael Dae
- Priority: EP07150480 20071228
- International Application: PCT/EP2008/011090 WO 20081223
- International Announcement: WO2009/083237 WO 20090709
- Main IPC: E21B43/16
- IPC: E21B43/16 ; E21B33/00 ; E21B21/00
Abstract:
A spacer for use in an oil well cementing operation comprises an aqueous solution of a visco-elastic surfactant. A method of treating a well in a cementing operation comprises pumping the spacer into a well ahead of a cement slurry, thereby minimizing or preventing commingling of drilling fluid and the cement slurry.
Public/Granted literature
- US20110024113A1 VISCO-ELASTIC SURFACTANT SPACERS Public/Granted day:2011-02-03
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