The use of equations known in filtering theory to determine parameters of fluid motion through filters of various designs used in the oil industry to clean up the products from mechanical impurities is described. Analytical studies and calculations have been carried out to determine the speed of fluid motion in filters of frame-bar, ringed, perforating types, as well as through the packing of gravel filters. The selection of new boundary conditions simplifies the solution of the resulting differential equations; and the increase in the calculated parameters by 5-10% (Hou method) eliminates the probability of error. Thus, the obtained values of the filtering parameters allow to correctly choose the size and geometry of the filter elements.

The main mechanism of oil displacement is characterized by gradual vertical movement of oil-water contact with insulation of watering out intervals in production wells. Different compositions on the basis of hydrochloric acid are traditionally used as working fluids to increase the formation pressure. The use of mud acid representing the mix of hydrochloric and fluoric acids gives the maximum effect.

The processes of formation inorganic salts in the bottomhole formation zone contribute to the deterioration of its filtration-capacity properties and significantly reduce the productivity of oil producing wells. Analysis of the studies made it possible to identify the main indicators on which the decrease in the permeability of rocks due to salt deposition during water-flooding mainly depends. The paper proposes a thermodynamic model developed to predict the processes of salt deposition in the bottomhole zone of oil producing wells.

Статья посвящена проблеме нефтеотдачи мезозойских залежей нефти месторождений Грозненского нефтяного района, которые подразделяются на две основные группы. К первой группе относятся верхнемеловые залежи, которые имеют трещиновато-кавернозный коллектор и представлены известняками. Ко второй группе относятся нижнемеловые (аптские) залежи, имеющие трещиновато-пористые коллекторы и представлены песчаниками и алевролитами. Приведены сведения по коэффициенту извлечения нефти (КИН) по ряду месторождений Грозненского нефтяного района. Даны рекомендации по размещению эксплуатационных скважин с целью эффективного их использования. The article is devoted to the problem of oil recovery of the Mesozoic oil deposits of the fields of the Grozny oil region, which are subdivided into two main groups. The first group includes the Upper Cretaceous deposits, which have a fractured-cavernous reservoir and are represented by limestones. The second group includes the Lower Cretaceous (Aptian) deposits with fractured-porous reservoirs and are represented by sandstones and siltstones. The information on the oil recovery factor (ORF) for a number of fields in the Grozny oil region is presented. Recommendations are given for the placement of production wells in order to effectively use them.

Наряду с совершенствованием эксплуатации скважин и повышением продуктивности за счет работ по воздействию на призабойную зону пласта, одним из главных вопросов является повышение нефтеотдачи пласта. Актуальность этих вопросов не вызывает сомнения применительно к месторождениям Северного Кавказа. Особенные геологическиеусловия присущие продуктивным пластам Чеченской республики (большая глубина залегания, высокая температура и давление, неоднородность коллекторских свойств и т.д.) затрудняют или полностью исключают возможность применения известных методов физико-химического воздействия на пласты с целью интенсификации отборов нефти и повышения нефтеотдачи. На нефтегазодобывающих объектах ЧР применялись основные физико-химические, тепловые и гидродинамические методы повышения нефтеотдачи пластов Along with improving the operation of wells and increasing productivity due to the work on the impact on the bottomhole formation zone, one of the main issues is the increase in oil recovery. The relevance of these issues does not raise doubts in relation to the fields of the North Caucasus. The special geological conditions inherent in the productive formations of the Chechen Republic (large depth, high temperature and pressure, heterogeneity of reservoir properties, etc.) make it difficult or completely exclude the possibility of using known methods of physicochemical treatment of formations in order to intensify oil production and increase oil recovery. The main physical, chemical, thermal and hydrodynamic methods of enhanced oil recovery were used at oil and gas production facilities in the Chechen Republic