Published November 2020, Pg. 26-29

Section: Well drilling

UOT: 622.276.24

DOI: 10.37474/0365-8554/2020-11-26-29

On specification of relaxation time for subsurface rocks composing borehole walls in geothermal well drilling

T.Sh. Salavatov Dr. in Tech. Sc. - Azerbaijan State University of Oil and Industry

Y.I. Safarov PhD in Tech. Sc. - ”Geotechnological Problems of Oil, Gas and Chemistry” SRI

S.A. Musayeva - ”Oil-Gas Scientific Research Project” Institute

The paper makes an effort to specify the relaxation time of subsurface rocks composing the borehole wall during geothermal well drilling justifying theoretical and practical researches. To solve mentioned issues, a theory of dumping of pressure fluctuations in non-stationary motion of drilling mud in the circulation system of well, based on the data of change of pressure and time consumption is applied and as a result a calculation formula obtained.

The method has been tested in the well No 245 in Muradkhanly area.

References:

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