On the quantitative and qualitative factors of borehole stability in the terrigenous sediments
Authors: V.D. Gorgots (Tyumen Branch of SurgutNIPIneft)
The change of the borehole shape in space and time is considered. A large-scale experiment with the purpose to select drilling fluids, providing borehole stability in Rogozhnikovskoye field, was executed . The influence of inhibition and pore pressure on the state of the borehole in clay intervals is investigated. The essential features of high pore pressure manifestation are given.
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