Abstract

Field development plans has been made on base of numerical reservoir models for many years in Russia. Nevertheless poor quality of lots of models makes them unable to provide reliable production forecast and optimize reservoir management. This is one of the reasons of relatively low recovery on fields in Russia. Numerical reservoir models quality can be significantly increased by wider usage of well-test and production-logging results for reservoir modeling.

JSC «Gazprom Neft» field example of carbonate reservoir shows that well-test and production-logging results can significantly decrease uncertainty in reservoir modeling and increase forecast reliability.

Introduction

Field is located in Eastern Siberia with poor infrastructure. Carbonate reservoir is characterized by the complex geological aspects. Main reserves are located in two highly heterogeneous layers: massive fractured high permeable layer M1 and low permeable layer M. Layer M has local distribution as a result of the Jurassic erosion. 3D seismic shows lateral heterogeneity of the layers with set of faults. This complex geology and lack of information from only few drilled wells makes difficulties in numerical model creation.

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