SYSTEM FOR EVALUATION TECHNOLOGICAL EFFICIENCY OF GEOLOGICAL AND TECHNICAL ACTIONS ON THE RESULTS OF THE INDICATOR RESEARCH

Abstract

The results of indicator research of oil reservoirs, conducted in 2011 and 2013 on the same areas of injection wells oil field in Republic of Kazakhstan. Studies were conducted on layers Ю-I - Ю-X, in which productive sediments are Callovian Stage, Bathonian Stage, Bajocian Stage of Jurassic. As a result of research the values calculated the total weight of the recovered from the mouths of the producing wells of the indicator (%), calculate the volume (m3) and performance channels of LFR (m 3 / day) in the inter-well space, the actual speed of the labeled water (m / day), permeability of LFR channels (μm 2 ) and hydraulic conductivity (μm 2 *cm/cPs). The aim of the research of 2011 was study the hydrodynamic characteristics of the layers, identify of fluid flow in areas of low filtration resistance in the inter-well space. The aim of the research of 2013 were performance evaluation conducted in 2012, geological and technical measures (GTM), aimed at increasing oil recovery in the areas of indicator research 2011. The task was to create a system of evaluating the effectiveness of GTM in the field of low filtration resistance. Have been proposed evaluation criteria sweep efficiency of developed oil formations. All areas on the results of studies carried out during the period 90 - 120 days, i.e. in the areas of low filtration resistance, divided into three groups: uniform water flood, water flood ambiguous, non-uniform water flood. The article presents the parameters used for classification. Classification allows you to recommend priority areas for inclusion in the plan of GTM to increase oil production. Conducting of indicator research before and after the GTM allows to estimate the changing nature of water flood on the area and to draw conclusions on the effectiveness of these measures. Transition area injection well from the group of non-uniform displacement to uniform water flood talk about the positive result of conducted GTM.