GEOPHYSICAL CHARACTERS AND ORIGIN OF THE THERMAL FLUIDS IN CHANGNAN BLOCK OF MUD DIAPIR ZONE IN YINGGEHAI BASIN
莺歌海盆地泥底辟带昌南区热流体活动的地球物理特征及成因

There are extraordinary active thermal fluids in the mud diapir zone of central depression in Yinggehai basin. Great achievements have been attained presently on the shallow natural gas exploration in mud diapir zone on the base of the regularity of gas migration and accumulation controlled by the upward-intrusion of thermal fluid. So far the most GIP is discovered in the shallow exploration area. Changnan Block is one of the areas where are most active upward-intrusion of thermal fluids in the middle-south of the mud diapir zone. It has typical characters in seismic sections. In this article, the geophysical characters and unique origin causes of the thermal fluids action are revealed by studing on the profile and the plane characters of the mud diapir-thermal fluid seismic smear zone geophysically.