Home > Term: pore-pressure transmission
pore-pressure transmission
A laboratory test used to determine if a drilling fluid blocks movement of filtrate through pore spaces of a shale sample. The PPT device monitors the increase in pore pressure in a shale when exposed to a drilling fluid over a period of time. Shale cores from 1 to 3-inches long are fitted into a modified Hassler cell that has sensitive pressure transducers in reservoirs on each end of the cell.
Reference:
van Oort E, Hale AH, Mody FK and Roy S: "Transport in Shales and the Design of Improved Water-Based Shale Drilling Fluids," in SPE Drilling and Completion 11, no. 3 (September 1996): 137-146.
- Part of Speech: noun
- Industry/Domain: Oil & gas
- Category: Drilling
- Company: Schlumberger
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Creator
- BSchmidt
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