Abstract:

Temperature field,pressure field,energy field and stress field are the main contents in the study of fluid dynamic field.The present temperature field is determined by observed temperature in well drilling and the value of geothermal heat flow;palaeo-temperature field is principally determined by the uniform temperature of inclusions.The methods for studying pressure field are mainly acoustic log,observed formation pressure and seismic interval velocity.The first two methods are usually used in drilled areas,the last one is particularly used in undrilled areas.The energy field study should be stressed on the restoration of Palaeo-fluid potential in 3-D hydrocarbon source rock masses and fluid passage systems.In general,the places with higher stress usually have higher pressure.As for particular region,it is of the first importance to divide vertical compaction pressure belt of single well ,then divide pressure system,and finally make forword modeling so as to probe pressure forming mechanism.Underground fluid fields are connected and coupled with each other,one must consider the fluid dynamic fields as a whole.

Key words: oil gas pool forming, dynamics, dynamic field, study