Invention Grant
- Patent Title: Inhibitive water-based drilling fluid system and method for drilling sands and other water-sensitive formations
- Patent Title (中): 防止水基钻井液系统和钻井和其他水敏层的钻井方法
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Application No.: US12284272Application Date: 2008-09-19
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Publication No.: US07825072B2Publication Date: 2010-11-02
- Inventor: David L. Carbajal , William Shumway , Ryan G. Ezell
- Applicant: David L. Carbajal , William Shumway , Ryan G. Ezell
- Applicant Address: US OK Duncan
- Assignee: Halliburton Energy Services Inc.
- Current Assignee: Halliburton Energy Services Inc.
- Current Assignee Address: US OK Duncan
- Agent Craig W. Roddy; Karen Tripp
- Main IPC: C09K8/24
- IPC: C09K8/24 ; E21B7/00
Abstract:
An inhibitive water-based polymer mud system and method for using the system in drilling and in stabilizing wellbores is disclosed for use in water sensitive formations as an alternative to oil-based muds. The system comprises a substantially non-ionic low molecular weight polyacrylamide in combination with a substantially non-ionic high molecular weight polyacrylamide, preferably long chain alcohol or an amine or silicate shale inhibitor, and poly anionic cellulose.
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