Scientific and technical journal

«Proceedings of Gubkin University»

ISSN 2073-9028

ESTIMATION OF THE EFFICIENCY OF THE IMPLEMENTED SYSTEM OF DEVELOPMENT BY HORIZONTAL MULTI-HOLE WELLS AT OBJECTS WITH AN OIL RIDGE AND A GAS CAP ON THE EXAMPLE OF THE BOLSHEKHETSKAYA CAVITY

UDC: 622.276.34
DOI: 10.33285/2073-9028-2021-4(305)-90-107

Authors:

Rozbaev Dmitriy A.1,
Ishkov Alexey A.1,2,
Abdullin Artur F.1,
Lazareva Victoria S.1,
Dmitriev Yuri V.1

1 KogalymNIPIneft, Tyumen, Russian Federation
2 Tyumen Industrial University, Tyumen, Russian Federation

Keywords: development system, horizontal wells, multilateral wells, gas cap, oil rims, drilling of horizontal and multilateral wells

Annotation:

This article provides information on the selection and justification of a development system for facilities with an oil rim of an oil and gas condensate field. An assessment of the efficiency of the implemented system, represented by wells of complex architecture, horizontal (HW) and multilateral wells (MLT), placed on the basis of an inverted seven-point development system, has been carried out. It is shown that the primary justification of the implemented development system is based on the geological and hydrodynamic model (GGDM), according to which the optimal lengths of horizontal wells, design drawdowns and wells were determined relative to the OWC and GOC levels. The article provides information on the current state of objects with an oil rim, as well as an assessment of coning processes to prevent the risks of gas and water breakthrough. According to the data on the geological structure, historical production data and the working depression, a classification of objects with an oil rim and a gas cap was compiled according to the phase composition of the produced fluids, which makes it possible to prioritize oil and/or gas production at analogous facilities.

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