| Author's Name: ZHAO Heng, LIU Wenhui, LI Yanjie, LIU Quanyou, ZHOU Bing, LUO Houyong, WANG Jie, LU Longfei, MENG Qingqiang, WU Xiaoqi |
| Gypsum/salt-bearing strata series have been proved to be a very important hydrocarbon source in marine basins according to oil-gas exploration and geological-geochemical analysis, and the marine gypsum/salt beds with high maturity and low TOC in China can also act as a good source rock. The marine gypsum/salt strata have several hydrocarbon-generation substances, extremely active organic-inorganic interactions, and special physical-chemical conditions. These factors act synergistically in affecting the source of hydrocarbon, thermal evolution process of organic matter, component, stable isotopic composition and yield of the product. Therefore, the study of hydrocarbon generation of gypsum/salt-bearing source bed has important practical and theoretical significance to China’s source-reservoir matching in marine gypsum/salt strata, hydrocarbon-generation mechanism and the evaluation of hydrocarbon source rock. Moreover, because of the particularity in hydrocarbon source and the mineral composition of the marine gypsum/salt strata, traditional evaluation indexes of hydrocarbon source rocks such as TOC, Chloroform asphalt “A”, S1+S2, et al, are hardly suitable for marine source rock. So the dynamic evaluation of source rock evolution and hydrocarbon potential should be more objective and reliable by using total hydrocarbon-generation carbon method. |
