关键词: 海相地层, 石油地质, 地震勘探, 非地震勘探, 综合勘探, 勘探程序, 华南地区

Abstract: Great successes of exploration and research have been achieved in the petroleum exploration in the marine deposited regions in southern China in the past 40 years.A great number of surface hydrocarbon, bitumen showings and many ancient oil & gas reservoirs of different ages as well as Jiannan and Chishui fields have been discovered.Shichuan Basin has become an important natural gas provinces.Petroleum resource evaluation shows that there are nearly 8000×10⁶ equivalent oil tons of total resource extent in the marine strata in Southern China except Sichuan Basin. The wide-spreading marine strata are the potential petroliferous areas in China.Researches have proved that the primary hydrocarbon-generating conditions are excellent and there are several suits of source-reservoir-caprock assemblages in the marine sequences in Southern China.Owing to the intensive tectonic movements during the late geological time,the preservation of hydrocarbon is the critical condition for the petroleum accumulation in southern China. At present, the largest obstacle to exploration breakout is that the available exploration technologies and methods have been unable to solve the existing problems in exploration in Southern China.It is suggested that the following work is necessarily to conduct:(1)take further steps to tackle the key problems in technologies and methods in seismic, non-seismic and chemical explorations; (2) develop the comprehensive exploration and comprehensive evaluation technology; (3) take up reasonable exploration procedure; (4) pay attention to and develop the technology and methods of natural gas exploration;and (5) full carry out the second development for the past information data. Generally speaking,it should be gradually formed that the research of tectonic evaluation must be stressed along with the studies of sedimentology and sequence stratigraphy based on the exposure,well and seismic data. Evaluation and seeking of favourable exploration targets may be carried out by means of dynamic numerical simulation of marine residual basins in Southern China.

Key words: marine strata, petroleum geology, seismic prospecting, non-seismic exploration, integrated exploration, exploration procedure, southern China