In this work, four wells were analyzed at the Srednebotuobinskoye oil, gas and condensate field located in the Republic of Sakha (Yakutia). Production of oil reserves is complicated by the problem of gas breakthrough from the gas cap into the oil area of the reservoir, which leads to gasification of production wells up to their full shutdown. The field is characterized by the presence of a thin oil rim. That is why there is an urgent need to develop innovative technologies capable of ensuring higher oil recovery rates. The result of the conducted analysis is the object of implementation of the research results of this work.
This article assesses the prospects for the use of geological and technical measures related to the creation of non-traditional methods. The essence of which is not only high manufacturability, but also energy saving with a significant expansion of geological criteria for their applicability. Hydraulic fracturing is widely used in wells operating an oil reservoir, which in most cases is proved theoretically and practically.
According to the results of geological field analysis, it was found that for the conditions of development of deposits of the Krasnoleninsky field, the introduction of hydraulic fracturing into wells is a tool, the reuse of which, regardless of the current water cut, will help to increase the productivity of production wells. A further increase in the efficiency of work is associated with their complex organization in a reasonable combination of well operating modes, hydraulic fracturing technologies, and optimization of the waterflooding system.
Currently, to determine the productive characteristics and diagnose the state of the bottomhole zone of wells (BHZ) operating the gas condensate deposits of the Beregovoye field, studies are being carried out, which include a set of interrelated methods that differ in theoretical basis, technology and execution technique. The purpose of these studies is to obtain information on the thermobaric parameters of the formation fluid in the reservoir, on the productive characteristics of wells, on the filtration-volumetric and mechanical properties of the porous medium. In this case, the curve of the derivative of the pressure drop at the bottom of the well with respect to the logarithm of time, built in two logarithmic axes, is widely used. To construct this diagnostic curve, three types of data are used: pressure recovery curve (HPC); pressure stabilization curve at constant well flow rate and studies with arbitrary change in flow rate and bottomhole pressure. Using the curve of the derivative of the pressure drop over the logarithm of time, a very wide range of possible structure of the wellbore area, the shape of its drainage boundaries, fractures, double media, etc., is diagnosed. When determining the productive characteristics during the development of the reservoir, the nature of the pressure change over the reservoir area was studied. The frequency of measurement of reservoir pressure by wells was established taking into account the geological features of the Beregovoye field and the rate of formation gas withdrawal from the reservoir.
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