Another discussion on starting pressure gradient

Starting pressure gradient does not truly exist, which is a wrong phenomenon in experiment. Through the analysis of some mistakes caused by starting pressure gradient, this paper proved that the starting pressure gradient does not exist. With starting pressure gradient, pressure can increase automatically without any liquid injection; there will be no unique equilibrium pressure in reservoir, but a pressure distribution with a pressure gradient; reservoir pressure can not return to initial value even after a long time; reservoir pressure distribution will evolve a singularity point mathematically; migration of oil and gas can not make progress and accumulation of oil and gas can not take place at all; static liquid will have the ability to suffer from shear stress. All the phenomena above do not agree with the practice of oil and gas development, and also do not comply with the principle of science. Without starting pressure gradient, the science of petroleum will be self-consistent.