Invention Grant
- Patent Title: Additive to reduce fluid loss for drilling fluids
- Patent Title (中): 添加剂以减少钻井液的流失
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Application No.: US12663725Application Date: 2008-05-27
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Publication No.: US08343895B2Publication Date: 2013-01-01
- Inventor: Dirk Van de Peer , Francois Cyriel D'Haese , Rudolf J. Dams
- Applicant: Dirk Van de Peer , Francois Cyriel D'Haese , Rudolf J. Dams
- Applicant Address: US MN Saint Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN Saint Paul
- Agent C. Michael Geise
- Priority: GB0711621.3 20070618
- International Application: PCT/US2008/064835 WO 20080527
- International Announcement: WO2008/156970 WO 20081224
- Main IPC: C09K8/035
- IPC: C09K8/035
Abstract:
Additives for reducing the loss of drilling fluid into the formation surrounding a wellbore during the drilling process as well as drilling fluids comprising the additives and methods of using such additives. The additive includes elastomeric, polymeric, and acrylate, non-agglomerated microspheres.
Public/Granted literature
- US20100173804A1 ADDITIVE TO REDUCE FLUID LOSS FOR DRILLING FLUIDS Public/Granted day:2010-07-08
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