RU2008116528A

RU2008116528A - METHOD FOR INCREASING PRODUCTIVITY OF PRODUCING WELLS AT THE LATE STAGE OF DEVELOPMENT OF OIL DEPOSITS

Info

Publication number: RU2008116528A
Application number: RU2008116528/03A
Authority: RU
Inventors: Александр Юльевич Гуторов (RU); Александр Юльевич Гуторов; Евгения Владимировна Воронова (RU); Евгения Владимировна Воронова
Original assignee: Александр Юльевич Гуторов (RU); Александр Юльевич Гуторов; Евгения Владимировна Воронова (RU); Евгения Владимировна Воронова
Priority date: 2008-04-25
Filing date: 2008-04-25
Publication date: 2009-10-27
Also published as: RU2380529C2

Abstract

1. Способ повышения продуктивности добывающих скважин на поздней стадии разработки нефтяных месторождений, включающий циклическое нагнетание вытесняющих агентов в нагнетательные скважины и отбор пластовой жидкости через добывающие скважины, воздействие на продуктивные интервалы данных скважин в пластах путем последовательной подачи импульсов упругой энергии в пласт, отличающийся тем, что предварительно осуществляют оценку плотности распределения остаточных запасов сырья с построением карт зонального распределения плотности остаточных запасов и выбор нагнетательных скважин, отвечающих условию максимального зонального распределения остаточных запасов сырья и оценку степени монолитизации горной породы, например, методом межскважинного просвечивания - сейсмотомографии, затем обеспечивают подачу импульсов упругой энергии на пласт в очаговых скважинах до момента появления положительной реакции в добывающих скважинах, например, в виде роста их продуктивности, и одновременно осуществляют оценку образования вторичной трещиноватости по динамике поведения данных сейсмотомографии, далее повторяют оценку плотности распределения остаточных запасов сырья с построением карт зонального распределения плотности остаточных запасов и выбор следующих нагнетательных скважин, отвечающих условию максимального зонального распределения остаточных запасов сырья и оценку вблизи них степени монолитизации горной породы и последующее проведение циклического нагнетания вытесняющих агентов в выбранных скважинах и отбор пластовой жидкости из добывающих скважин с контролем процесса отбора этой жидкости с посл1. A method of increasing the productivity of production wells at a late stage in the development of oil fields, including the cyclic injection of displacing agents into injection wells and the selection of formation fluid through production wells, the impact on the productive intervals of these wells in the formation by sequentially supplying pulses of elastic energy to the formation, characterized in that they preliminarily estimate the distribution density of the residual stocks of raw materials with the construction of maps of the zonal distribution of the density of the remainder the exact reserves and the choice of injection wells that meet the condition of the maximum zonal distribution of the residual reserves of raw materials and the assessment of the degree of rock monolithization, for example, by the method of cross-hole scanning - seismotomography, then they provide elastic energy pulses to the formation in the focal wells until a positive reaction occurs in the producing wells, for example, in the form of an increase in their productivity, and at the same time they evaluate the formation of secondary fracture by the dynamics of data behavior seismic tomography, then repeat the assessment of the distribution density of the residual reserves of raw materials with the construction of maps of the zonal distribution of the density of residual reserves and the choice of the following injection wells that meet the condition for the maximum zonal distribution of the residual reserves of raw materials and an assessment of the degree of monolithization of the rock near them and the subsequent cyclic injection of displacing agents in the selected wells and selection of formation fluid from production wells with control of the process of selection of this fluid from the last

Claims

1. A method of increasing the productivity of production wells at a late stage in the development of oil fields, including the cyclic injection of displacing agents into injection wells and the selection of formation fluid through production wells, the impact on the productive intervals of these wells in the formation by sequentially supplying pulses of elastic energy to the formation, characterized in that they preliminarily estimate the distribution density of the residual stocks of raw materials with the construction of maps of the zonal distribution of the density of the remainder the exact reserves and the choice of injection wells that meet the condition of the maximum zonal distribution of the residual reserves of raw materials and the assessment of the degree of rock monolithization, for example, by the method of cross-hole scanning - seismotomography, then they provide elastic energy pulses to the formation in the focal wells until a positive reaction occurs in the producing wells, for example, in the form of an increase in their productivity, and at the same time they evaluate the formation of secondary fracture by the dynamics of data behavior seismic tomography, then repeat the assessment of the distribution density of the residual reserves of raw materials with the construction of maps of the zonal distribution of the density of residual reserves and the choice of the following injection wells that meet the condition for the maximum zonal distribution of the residual reserves of raw materials and an assessment of the degree of monolithization of the rock near them and the subsequent cyclic injection of displacing agents in the selected wells and selection of formation fluid from production wells with control of the process of selection of this fluid from the last the impact of elastic energy pulses on the formation in focal wells, and focal wells are selected in places and along a contour that encompasses zones of flexures, periclines, or other sharp changes in the steepness of fall of productive formations.

2. A method of increasing the productivity of producing wells at a late stage in the development of oil fields according to claim 1, characterized in that the cyclic injection of water is carried out until the productivity of the producing wells decreases below the minimum level determined by the profitability indicator and the moment of stabilization at the maximum level of seismic tomography data.

3. A method of increasing the productivity of producing wells at a late stage in the development of oil fields according to claim 1, characterized in that the reprocessing of the formation by pulses of elastic energy in the focal wells is carried out provided that the minimum level of seismic tomography data is achieved.