Criteria of choosing regions for drilling and design variants for multilateral wells drilling on the example of Em-Egovsky license area of Krasnoleninskoye field
UDC: 622.276.1/.4
DOI: -
Authors:
SOKOLYANSKAYA EKATERINA V.
1,
CHEZGANOVA OLGA N.1,
PATRAKOV DMITRY P.1,
GLADKIKH MIKHAIL A.1,
ZHARKOV ARTEM V.2,
KAN KONSTANTIN K.2
1 RN-Geology Research Development, Tyumen, Russia
2 RN-Nyaganneftegaz, Nyagan, Russia
Keywords: oil field, multilateral well, maximum non-reservoir thickness, flow simulation, horizontal well
Annotation:
The authors of the article consider an approach to selecting criteria for drilling multilateral wells (MLW) as an alternative to a horizontal well and multistage hydraulic fracturing (HW + MSHF) in order to reduce the risks of underlying water breakthrough via a man-made fracture. The following conditions are analyzed: formation efficient thickness, average reservoir properties, reservoir compartmentalization, reservoir connectivity, etc.
A sector model that takes into account reservoir cross-flows was cut out from the full-scale hydrodynamic model. The results of modeling, made with the help of the model, allowed developing drill area criteria and selecting possible options of MLW drilling design.
Based on the results of modeling and technological capabilities for drilling, areas for drilling and optimal well designs were selected.
A hydrodynamic model was developed and updated to perform iterative calculations. The comparison of the starting flow rates and cumulative oil production for the design options of MLW and HW was analyzed. The parameter of the non-collector maximum thickness was introduced. A critical value for dividing the collector into conditions of improved/deteriorated connectivity was obtained. Recommendations were given for selecting an area for successful drilling of the MLW.
For the successful implementation of HW + MSHF or MLW, criteria for selecting a design relative to areas of improved/deteriorated collector connectivity were developed.
Bibliography:
1. Metodika vybora i obosnovaniya optimal’noy konstruktsii proektiruemoy skvazhiny na osnove geomekhanicheskogo modelirovaniya / K.A. Shipovskiy, V.A. Kapitonov, M.E. Koval’, G.G. Gilaev // Stroitel’stvo neftyanykh i gazovykh skvazhin na sushe i na more. – 2023. – № 5(365). – S. 25–30. – DOI: 10.33285/0130-3872-2023-5(365)-25-30
2. Chto vybrat’ dlya osvoeniya nizkopronitsaemykh vodoneftyanykh zon — gorizontal’nye stvoly s mnogostadiynym gidrorazryvom plasta ili mnogozaboynye skvazhiny? / P.V. Ermakov, R.L. Khazipov, D.S. Reshetnikova [i dr.] // Ekspozitsiya neft’ gaz. – 2022. – № 8(93). – S. 82–86.
3. Planirovanie i stroitel’stvo mnogozaboynykh skvazhin s bol’shim otkhodom ot vertikali / D.L. Bakirov, I.K. Akhmetshin, M.M. Fattakhov, E.V. Babushkin // Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy. – 2015. – № 9. – S. 41–50.
4. Sokolyanskaya E.V., Fedorova A.A. Opyt bureniya mnogozaboynykh skvazhin na karbonatnykh otlozheniyakh Osinskogo gorizonta // Ekspozitsiya neft’ gaz. – 2023. – № 2(95). – S. 38–42.
5. Improving Well Productivity and Sustainability in a Horizontal Exploratory Well by Multistage Fracturing – A Case Study / S. Almulla, H. Al-Bader, A. Al-Ibrahim [et al.] // Paper presented at the SPE International Conference and Exhibition on Formation Damage Control, Lafayette, Louisiana, USA, February 2020. – SPE-199332-MS. – URL: https://doi.org/10.2118/199332-MS
Back to issue