The study of the multilayer CRM model applicability for splitting liquid production of horizontal wells with multistage hydraulic fracturing

About the authors:

Andrey Yu. Smirnov, Senior Specialist, Department of Geology and Field Development of Uvatneftegaz, Tyumen Petroleum Research Center PJSC Rosneft Oil Company; Postgraduate Student, Department of Fundamental Mathematics and Mechanics, School of Computer Sciences, University of Tyumen, Tyumen, Russia; aysmirnov5@tnnc.rosneft.ru



Sergey P. Rodionov,

Dr. Sci. (Phys.-Math.), Chief Scientific Specialist, Tyumen Branch of Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences; Professor, Department of Fundamental Mathematics and Mechanics, School of Computer Sciences, University of Tyumen, Tyumen, Russia; rodionovsp@bk.ru

Abstract:

Developing multilayer reservoirs with a single grid of horizontal wells is chosen out of economic feasibility. The operating of low-permeability reservoirs often involves hydraulic fracturing. In this approach, it is difficult to determine the contribution of each layer to well production, which makes it impossible to correctly estimate reserve recovery and plan IOR/EOR technologies.

The currently known methods and tools for solving the production separation problem are not accurate enough, and the increasing trend towards faster workflows is leading to a gradual shift away from hydrodynamic modelling and towards simple analytical models. One of such models is the CRM, which requires a minimal set of input data and allows obtaining information on interwell connectivities as well as prediction of production dynamics.

This paper considers the application of the multilayer CRM to calculate production dynamics of horizontal wells by layers with constant or varying fracture productivity factor. The effectiveness of the proposed approach is confirmed by numerical experiments using synthetic hydrodynamic model.

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