04816551 is referenced by 32 patents and cites 3 patents.

By the use of small amounts of novel amide resin reaction products of dibasic dimerized or trimerized fatty acids, an alkanolamine and a polyalkylene polyamine, improved drilling mud formulations are obtained. In those oil mud drilling formulations that contain organophilic clays, one is able to maximize the viscosity and gelation of the formulations, resulting in less preparation time and less material usage, especially the clay. In accordance with the invention, one is able to thicken or gel oil-mud systems at usual operating temperatures even when using low viscosity/low aromatic oils as the external phase, and to maximize the yield of organophilic clays readily in a short period of time, at low shear rates. The amide resin extends the utility of organophilic clays in low viscosity oil-mud systems. They produce more shear thinning fluids, higher yield points and quicker gel strengths while maintianing low plastic viscosities.

Title
Oil based drilling fluids
Application Number
799530
Publication Number
4816551
Application Date
March 20, 1987
Publication Date
March 28, 1989
Inventor
Charles K Grantham
Houston
TX, US
Henry C McLaurine
Katy
TX, US
Harris A Oehler
Houston
TX, US
Agent
Arnold White & Durkee
Assignee
MI Drilling Fluids Company
TX, US
IPC
C08G 69/34
C08G 69/44
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