Comparison of the approaches to assessing the compressibility of the pore space

Integral and differential approaches to determining the volumetric compression of rocks caused by changes in stress state are considered. Changes volume pore space analyzed with an increase its all-round compression. Estimation compressibility coefficients reservoirs due development fields is urgent problem, since spread values factors reduces adequacy estimates physical properties subsidence earth's surface developed underground gas storages. This parameter key assessing geodynamic consequences long-term hydrocarbon deposits operation storage facilities. Approaches assessment differ use cumulative (integral) or local (differential) porosity a change effective pressure. It shown that coefficient pores calculated integral approach significantly exceeds value approach, which accumulative nature more accurately determines coefficient, it takes into account detail features