发明名称 |
NON-AQUEOUS DRILLING ADDITIVE USEFUL TO PRODUCE A FLAT TEMPERATURE-RHEOLOGY PROFILE |
摘要 |
<p>A method of providing a substantially constant rheological profile of an oil-based drilling fluid over a temperature range of about 120 degrees Fahrenheit to about 400 degrees Fahrenheit. The method comprises adding a drilling fluid additive to the drilling fluid, wherein the drilling fluid additive consists essentially of a polyamide and a set of at least one or more mono-carboxyl units. The polyamide has (a) repeat units of (i) a poly-carboxyl unit with at least two carboxytic moieties; and (ii) a polyamine unit having an amine functionality of two or more and the one or more mono-carboxyl units being positioned on the polyamide at a position selected from the group consisting of: an end position, a pendant position and combinations thereof.</p> |
申请公布号 |
WO2012154437(A1) |
申请公布日期 |
2012.11.15 |
申请号 |
WO2012US35819 |
申请日期 |
2012.04.30 |
申请人 |
ELEMENTIS SPECIALTIES, INC.;DINO, DAVID;CHEN, YANHUI |
发明人 |
DINO, DAVID;CHEN, YANHUI |
分类号 |
C09K8/22 |
主分类号 |
C09K8/22 |
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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