METHOD OF PROGNOSTICATION OF CONDENSATE CONTENT IN FORMATION GAS AND ITS CUMULATIVE RECOVERY FOR POOLS WITH HIGH CONTENT OF CONDENSATE

摘要

FIELD: oil and gas producing industry. SUBSTANCE: method includes sampling of separation gas and wet condensate; experimental determination of formation losses of condensate by investigation of phase behavior of formation gas sample on laboratory plants and prognostication of condensate change in formation gas by calculation. Investigations are carried out for determination of dependence of formation pressure on withdrawal of dry gas content of gas components in degassed condensate found in laboratory plant in composition of precipitating wet condensate. The entire period of deposit development is divided into period of operation beginning from initial formation pressure to pressure of beginning of condensation and into period of operation beginning from pressure of beginning of condensation to pressure of 0.101 MPa with change of condensate content in formation gas. The second period is divided into stages. Volumes of dry gas at the end of each stage are determined by formula. EFFECT: higher accuracy of prognostication of condensate content on formation gas. 2 cl, 2 dwg, 1 tbl