Ss. Hao et al., CHARACTERISTICS OF DYNAMIC EQUILIBRIUM FOR NATURAL-GAS MIGRATION AND ACCUMULATION OF THE GAS-FIELD IN THE CENTER OF THE ORDOS BASIN, SCIENCE IN CHINA SERIES D-EARTH SCIENCES, 40(1), 1997, pp. 11-15
The gas field in the center of Ordos Basin has been conventionally con
sidered as a large gas pool with thin reservoirs. However, lots of phe
nomena contrary to this concept occur in the exploration and productio
n process. It is proposed that the gas field is composed of many small
lithological gas pools, sourced from and reservoired in the same Ordo
vician formation which is an underpressured fluid compartment. A dynam
ic equilibrium moldel of natural gas migration and accumulation has be
en developed to illustrate the formation mechanism of these gas pools.