Effect of drilling mud on electric potential in spontaneous polarization logging

There are many kinds of drilling muds available currently to facilitate drilling. Improvement of drilling mud efficiency needs sufficient investment. A drilling mud should preserve its characteristics while drilling, it should cool drilling tools, prevent caving and maximum possible eco-friendly. On the other hand, a drilling mud and its components can complicate processing of electrical exploration data, whereas wrong interpretation of log information can offer distorted presentation of bedding, overor under-estimates of water, gas and oil reserves in reservoirs, or other intelligence necessary in mineral mining. This article describes the main types and characteristics drilling muds. The effect of drilling muds on the electric potential in geophysical logging with spontaneous polarization, with regard to such parameters as kinematic and dynamic viscosity, density, drilling mud resistivity, well diameter, flowability and ion radius of muds and adsorption which generates a double electric layer at the well-reservoir interface.

Keywords: Drilling mud, exploration well, electric potential, adsorption potential, relative viscosity, kinematic viscosity, dynamic viscosity.
For citation:

Islamgaliev D. V., Ratushnyak A. N. Effect of drilling mud on electric potential in spontaneous polarization logging. MIAB. Mining Inf. Anal. Bull. 2021;(11-1):46—54. [In Russ]. DOI: 10.25018/0236_1493_2021_111_0_46.

Acknowledgements:
Issue number: 11
Year: 2021
Page number: 46-54
ISBN: 0236-1493
UDK: 622.244.4
DOI: 10.25018/0236_1493_2021_111_0_46
Article receipt date: 25.05.2021
Date of review receipt: 14.07.2021
Date of the editorial board′s decision on the article′s publishing: 10.10.2021
About authors:

Islamgaliev D. V.1, Senior Lecturer at the Department of Mathematics, e-mail: Dmitriy. Islamgaliev@m.ursmu.ru;
Ratushnyak A. N.2, Cand. Sci. (Eng.), Head of the Electrometry Laboratory, e-mail: geo_ info@mail.ru;
1 Ural State Mining University, ul. Kuibysheva 30, Yekaterinburg, 620144, Russia;
2 Bulashevich Institute of Geophysics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia.

 

 

For contacts:

Islamgaliev D. V., e-mail: Dmitriy.Islamgaliev@m.ursmu.ru.

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