Geology, geography and global energy

Scientific and Technical Journal

Geotekhnologiya of operational wells on a depression

2018. №2, pp. 58-61

Zhuravlev G.I. - C.Sc. in Technical, Associate Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation, geologi2007@yandex.ru

Serebryakov And.O. - Senior Lecturer, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation, geologi2007@yandex.ru

Lyamina N.F. - Associate Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation, nataliagty@mail.ru

Manafov M.G. - student, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation, maksim_manafov@mail.ru

The article is devoted to the technology of drilling production wells at the opening productive permeable layers at negative differential pressure - depression. Application of technology of opening productive horizons eliminates colmatation of productive layers and preserves natural reservoir properties and as a consequence of this increase oil recovery. The drilling at negative differential pressure allows: exclude formation contamination; increase oil recovery factor; increase mechanical drilling speed due to lower wellhead pressure; reduce negative effect of drilling mud filtrate on productive layer.

Key words: бурение, депрессия, давление, drilling, depression, pressure

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