Published September 2021, Pg. 24-28

Section: Oil and gas field development and exploitation

UOT: 622.24.622.276

DOI: 10.37474/0365-8554/2021-9-24-28

Revealing of the effect of borehole deviation on its productivity

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

G.Kh. Melikov Cand. in Tech. Sc. - Azerbaijan State University of Oil and Industry

J.M. Eivazov - “Oil-Gas Scientific Research Project” Institute

The wells drilled with the deviation angle compared to the vertically drilled ones cover more of oil-bearing area. By increasing drainage zone it is possible to obtain high final oil production and therefore, to enhance oil recovery rate. With the purpose of reducing the drilling costs, the increase of drainage zone gives positive outcomes. From economic point of view, it is more efficient to operate the field increasing the well quantity (i.e. well density) or to use horizontal wells drilled with deviation angle.

References:

1. SPE-644436. A Method to estimate the drainage area of a horizontal well -P. Permadi; E. Putra; M.E. Butarbutar.

2. SPE-35713. A simple productivity equation for horizontal wells based on drainage area concept-shedid. A. Elgaghah; Samuel O. Osisanya; Djebbar Tiab.

3. Tarek Ahmed. Reservoir Engineering Handbook, Second Edition-2001.

4. Borisov, Ju.P. Oil Production Using Horizontal and Multiple Deviation Wells, Moscow, Nedra, 1964. Translated by J. Strauss. S.D. Joshi (ed.). Bartlesville, OK: Phillips Petroleum Co., the R&D Library Translation 1984.