METHODICAL SUBSTANTIATION OF INCREASING PRODUCTION OF OIL RESERVES ON THE FIELDS COMPLICATED BY TECTONIC DISTURBANCES

Abstract

Relevance. A significant number of large oil fields are currently complicated by different tectonic dislocations. This article describes the influence of tectonic disorders on field development and production of oil reserves. The object of the study are the productive layers of the Jurassic deposits of the Shaim oil and gas bearing deposit, characterized by a high degree of heterogeneity and low values of filtration and capacitance properties, complicated by tectonic disturbances. Not achieving the plan of oil reserves production for such deposits requires detailed monitoring of the development, considering the main geological characteristics and subsequent regulation and improvement of the development system. The methodical approach to the improvement of the system of development of deposits complicated by tectonic disturbances includes critical analysis of primary geological, geophysical and fishing information, analysis of the main indicators of development characterizing the production of oil reserves. The main aim of the study is to determine the causes of uneven development of reserves by area and cut of productive strata, to study the influence of tectonic faults of various orders on the effectiveness of the used development system, including the flooding system of reservoirs. The methods: geological and hydrodynamic modeling of exploration, geological and field analysis of exploration, analysis of the interpretation results of hydrodynamic studies of wells, comparative analysis of reservoir properties obtained by different research methods. The analysis of the efficiency of the development system was carried out using indirect methods of mathematical statistics, supported by the direct methods – tracer studies of wells. The results. On the example of the Novomostovskoe oilfield the authors have selected hydrodynamically isolated areas with high values of mobile residual reserves limited by tectonic disturbances and proposed for them the geological and technical measures and technologies aimed at increasing the production of oil reserves. Based on the results of the studies the authors proposed a methodological justification for operational regulation and monitoring the exploration of the reservoir complicated by tectonic disturbances.

Keywords

• shaim oil and gas bearing deposits
• tectonic disturbance
• hydrodynamic interrelations between wells
• development of oil reserves
• novomostovskoe oilfield