Key words: supercritical state, layer fluid, watered pay zone, organic saltpeter, optimization of oil lift
An analysis of conditions necessary for the transition of the hydrocarbons + water system into the supercritical (SC) state is carried out and a thermochemical method of heating the productive layer in the vicinity of oil well that ensures such transition is developed. In this state the system maintains its homogeneity, non-delaminating and utterly fluid character. New binary compositions (BC) — nitrates of organic amines and initiators of their decomposition — able to transfer the hydrocarbons + water system into the SC state are suggested and studied. This transition can be reached at the expense of high intra-layer pressure and high exothermicity of the BC decomposition. Economic efficiency of oil production on watered oil fields based on the developed approach is evaluated.
doi:10.1134/S199079311108001X