Abstract：Some low-positional fans in marine basins and large-scale of continental basins are often relative to oil/gas accumulation. In view of unclear feature of low-positional geologic bodies in sequence-stratigraphic framework of minor faulted lake basin,the authors introduced the conception of special low-positional geologic bodies in a process of studying minor faulted lake basin and found some special low-positional geologic bodies in sequence-stratigraphic framework on the basis of studying typical minor faulted lake basin-sequence-strati-graphic framework of Miyang sag. These special low-positional geologic bodies have distinct fea- ture: the seismic reflections are characteristics of downlap structure in both direction;the self potential logging traces are box- or bell-shaped characteristics; the resistance logging traces are character of fingers; there is significant difference between the mean-square-root amplitude volume and surrounding amplitudes; the impedance by logging-constrained inversion is significantly greater than surrounding data volume. These geophysical characters not only verify reliability special low-positional geologic bodies being looked for,but also are means and tools looking for special low-positional geologic bodies.
蒋恕, 王华. 小型断陷湖盆特殊低位地质体地球物理特征研究——以泌阳凹陷为例[J]. 石油地球物理勘探, 2005, 40(5): 565-568,584.
Jiang Shu, Wang Hua . Geophysical feature of special low-positional geo logic bodies in minor faulted lake basin: case of Miyang sag. OGP, 2005, 40(5): 565-568,584.
