Summary A quantitative evaluation technique for shale stability in a polymeric medium has been developed with a rheological method. The storage modulus of a shale pellet immersed in a drilling fluid is used to predict the shale-inhibitive properties of the fluid. Polymer concentration, molecular weight, carboxyl sUbstitution, and KCI concentration are important parameters affecting shale stability.
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Cheng-Fa Lu (1988) studied this question.
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