Published May 2012
Pressure of gas-condensate mixture compression beginning and the method of its defining
V.M.FataliyevThe results of experimental investigations of phase transformations mechanism in gas-condensate fields in exploitation depletion regime taking into account the porosity, residual water saturation, layer temperature and condensate density are presented. Carried out investigations allowed evaluate the influence of porous medium properties and saturated fluids on process more accurately. On the basis of this are formulated new views on compression beginning pressure parameter and developing of new kind of method of its definition which lies in that in the beginning of created combined system the pressure increases for 30-40% more of compression beginning pressure value, which is specified in the bomb. Further the pressure decreases with intervals in which the quantity of extracted product allows conducting corresponding physical-chemical investigations and defining condensate content of selected product. According to the first sign of condensate content decreasing in comparison with its initial value is specified the corresponding pressure value which is accepted as the pressure of gas-condensate system compression beginning. As shows the comparison of compression beginning pressure values, defined in the bomb and porous medium, they differ significantly. In connection with this we suggest to specify the compression beginning pressure on layer model that is close to actual conditions of particular deposit.
