发明名称 |
Viscosified aqueous chitosan-containing well drilling and servicing fluids |
摘要 |
The invention provides well drilling and servicing fluids comprising an alkaline aqueous liquid containing chitosan, an anhydride, and an aldehyde therein. The invention further provides a method of drilling a well wherein there is circulated in the wellbore during drilling a drilling fluid comprising an alkaline aqueous liquid containing chitosan and an anhydride, and optionally an aldehyde therein.
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申请公布号 |
US6358889(B2) |
申请公布日期 |
2002.03.19 |
申请号 |
US20010782633 |
申请日期 |
2001.02.13 |
申请人 |
VENTURE INNOVATIONS, INC. |
发明人 |
WAGGENSPACK JOHN H.;HOUSE ROY F.;PITRE KIMELY P. |
分类号 |
C08B37/08;C08L5/08;C09K8/08;C09K8/514;(IPC1-7):C09K7/02 |
主分类号 |
C08B37/08 |
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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