Invert-emulsion drilling fluids for exposing Hamakin horizon of the Vostochno-Alinskoye oil and gas condensate field
https://doi.org/10.31660/0445-0108-2020-3-44-53
Abstract
The article is devoted to an analysis of the oil well construction in the fields of the Talakan group of Eastern Siberia. The low quality of the construction of oil wells is explained based on geological structure of the reservoir and the conditions of its formation, particulary, the complications encountered during drilling are given. Based on the analysis, it was found that the use of traditional monosalt and salt-saturated drilling muds is not effective enough to simultaneously solve the problems of exposing intervals of salt deposits and high-quality primary exposing of reservoirs. Based on the literature data analysis and the experience of building the first exploratory wells in Eastern Siberia, the use of hydrocarbon-based flushing liquids is justified. As a result of theoretical and laboratory studies, the compositions of invert-emulsion drilling fluids are proposed of hydrocarbons, which are available in the conditions of fields in Eastern Siberia. The results of studies for determining the effect of flushing fluids on the reservoir properties of the V10 reservoir of the Vostochno-Alinskoye oil and gas condensate field showed that recovery of core permeability after exposure to hydrocarbon-based flushing liquid was on average 90 %, which is significantly higher compared to the effect of water-based drilling muds, where the recovery coefficient is 23 %.
About the Authors
V. A. Parfiryev
Surgutneftegas PJSC
Russian Federation
Russian Federation
Vasiliy A. Parfiryev, Manager of Talakanneft Oil and Gas Production Division
Surgut
Yu. V. Vaganov
Industrial University of Tyumen
Russian Federation
Russian Federation
Yuriy V. Vaganov, Candidate of Engineering, Associate Professor, Head of the Department of Drilling Oil and Gas Wells
Tyumen
N. N. Zakirov
Industrial University of Tyumen
Russian Federation
Russian Federation
Nikolay N. Zakirov, Doctor of Engineering, Professor at the Department of Drilling Oil and Gas Wells
Tyumen
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Review
For citations:
Parfiryev V.A., Vaganov Yu.V., Zakirov N.N. Invert-emulsion drilling fluids for exposing Hamakin horizon of the Vostochno-Alinskoye oil and gas condensate field. Oil and Gas Studies. 2020;(3):44-53. (In Russ.) https://doi.org/10.31660/0445-0108-2020-3-44-53
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