Waterflood Optimization on the West Siberia Field with Hydrodynamic Modeling

Abstract

Waterflooding is the main method of developing oil fields both in Western Siberia and in most other oil-producing countries. Most of these fields located in Russia are mature. Creating new technologies or optimizing the existing ones is the key to the effective development of residual hydrocarbon reserves. Optimization of a waterflood pattern is one of the main tasks of the oil industry. It implies planning and implementing a set of measures in the field that will affect the waterflood pattern and either increase the oil recovery factor, production or optimize the complex technical-economic parameter. The purpose of the work is to increase the efficiency of oil field development by optimizing the waterflood pattern by means of hydrodynamic modeling on the example of the Western Siberian field. Waterflood optimization can be accomplished by sidetracking or changing the development system. An integral element of a waterflood optimization system is always a field model, based on which the implementing different measures is planned. In this paper, hydrodynamic modeling was used to evaluate the effectiveness of waterflood optimization. It is considered one of the most powerful predictive tools available to reservoir engineers. RN KIN software was studied, with the help of which the basic data about the field was obtained. The waterflood pattern was selected for the decision to implement a local measure. A hydrodynamic model was used to analyze the effectiveness of the measure. Waterflood pattern model of the field was built and adapted. Four measures, potentially aimed at increasing the efficiency of the waterflood pattern, were proposed. After carrying out calculations, the best of them was selected from a technical and economic point of view. Hydrodynamic modeling and calculation of development parameters were carried out in the Petrel software. In the course of the study, the possibility of using hydrodynamic modeling to analyze the efficiency of the waterflood pattern was shown. Sidetracking of the longest length proved to be the most effective measure to increase cumulative oil production and reduce cumulative water production. Thus, the paper obtained results that can serve as a good basis for justifying the effectiveness of well intervention on the example of the oil field in Western Siberia.