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Laboratory Study of Borehole Friction Factor With a Dynamic-Filtration Apparatus

1990; Volume: 5; Issue: 03 Linguagem: Inglês

10.2118/18558-pa

2469-8504

Eric Maidla, Andrew K. Wojtanowicz,

Hydraulic Fracturing and Reservoir Analysis

Summary This paper discusses a medium-scale borehole friction tester with dynamic-filtration capabilities that showed that friction coefficients are affected by mud quality, mudcake, and lubricant addition in low-solids, water-based muds (WBM's). Most measured values, including those from oil-based muds (OBM's), were between 0.2 and 0.3. This paper also reports on new effects of filter cake and solids deposition on borehole friction.