METHOD OF DEVELOPMENT OF COMPLEX DEPOSITS WITH LOW RESERVOIR PRESSURE AND TEMPERATURE

摘要

FIELD: oil and gas industry.;SUBSTANCE: invention relates to oil industry and can be used in development of wells of oil deposits in conditions of low formation pressures (close to pressure of oil saturation with oil), as well as low reservoir temperatures. Substance of the invention consists in fact that perforation of walls of the well is performed and call of inflow from the formation, differing by the fact that preliminary by properties of deep oil samples there determined is critical temperature of transition of asphaltenes, resins and paraffins dissolved in oil into crystalline state. In case of influx to the well with the help of pressure gage thermometer the value of temperature of oil flowing from productive interlayers and bottom pressure are controlled. For each group of collector permeability maximum permissible depression is calculated, and inflow from productive formation is called for by least depression, at which oil flowing from productive interlayer has critical temperature.;EFFECT: use of the proposed method enables to clean the productive stratum without precipitation and paraffin crystallization, which is ultimately reflected in the increase in the well flow rate.;1 cl, 2 tbl, 2 dwg