专利名称:DRILLING FLUID发明人:CARL KEITH SMITH申请号:US15949393申请日:20180410
公开号:US201802231A1公开日:20180809
摘要:A drilling fluid and method for drilling in a coal containing formation with amixed metal-viscosified drilling fluid including at least 0.05% calcium sulfate.
申请人:CANADIAN ENERGY SERVICES L.P.
地址:Calgary CA
国籍:CA
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