Cross-well interference evaluation for reservoir model calibration, undrained reserves localization and brownfield production enhancement

Background. The studied object is an oil and gas field in Western Siberia, the main productive formation is represented by three units, with significantly differing properties. Despite rock porosity is relatively even throughout the section, significantly more permeable parts of the formation are located in its upper part, and the middle and lower units identified by additional petrophysical studies are characterized by extremely low permeability values.

At the analyzed field, the developed reservoir is already drilled by both vertical and horizontal wells. Hydraulic fracturing performed in the vast majority of wells, and formation pressure maintenance system was organized a long time ago. Development has been going on for over thirty years and the field is at the stage of declining production.

Aim. Brownfield production enhancement.

Materials and methods. Production analysis, petrophysical model calibration, cross-well interference testing, dynamic reservoir modeling, multi scenario development planning

Results. Integrated technology of field development analysis, targeted field testing, dynamic reservoir modeling and multicsenario development planning was set up and implemented on a brownfield. Project effectiveness will be evaluated after drilling this year.

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