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On the true bottomhole parameters at drilling with above-bit module

Authors: F.R. Yakhshibekov, E.A. Abramov (Surgutneftegaz OJSC, RF, Surgut), V.D. Gorgots, I.I. Ryabkov, I.A. Akimov (Tyumen Branch of SurgutNIPIneft, RF, Tyumen)

Key words: autonomous, above-bit module, axial load, bit speed, station of geological and technological researches.

Operations with bottomhole above-bit module were carried out. Obtained are the results, allowed to reveal the technical and technological problems: the station of geological and technological researches doesn't give true information about bottomhole conditions and modes; the growth of bottomhole pressures at the pump switching doesn't allow to maintain a constant bottom pressure, which can greatly exceed the reservoir one; it is necessary to develop a new generation of bottomhole information systems.

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