The Second Annual Meeting of Chinese Petroleum Society recieved more than 100 papers concerning petroleum geochemistry and selected 13 papers from these to read out at the special conferece about oil generation.References tocon stitution of source materials

methods and criteria of classification of or-ganic matter types

evolutionary mechanims and model of organic matter

andits thermo-reactive kinetics

biological markers(such as porphyrin

perylene

sterane and terpane et al.)oil and gas source rock correlation

evaluationindex of source rock and quantitative evaluation of oil generated

time-temper-ature index

the application of laser-pyrolysis gas chromatograph and othernew techniques and methods to the study of petroleum genesis are made.In comparasion with the First Annual Meeting

these results

both in their tech-nical level and their research depth and width

have obviously increased.Inthe field of organic geochemistry

Chinese geochemists have brought forth somenew ideas and begun doing their own contributions anew.The distinction bet-ween our research level and that of the world has been reduced.However

there are still some weak links and some new items which remainto be developed

we still have a long way to go in laberatorial techniques.For exampl

carbonate rock is widespread in China

but its amount of organicmatter is lower

maturation level is higher

and regional structures are morecomplex.Therefor

it is one of pressing items how to evaluate its hydrocar-bon potential and predict its favorable exploration targets.Other items

such as quantitative evaluation of source rock

composition and structuremodel of kerogen

analytical techniques

biological markers and simulatingtests have yet to be stutied deeply.