华北C-P不同体系域煤和煤系泥岩对比研究

Affected by sedimentary environments and level changes, coal seams and coal-measures mudstone formed in different systems tracts have deferent types of organic, compositions, characters and hydrocarbon potential, therefore they have direct influence on the generation of hydrocarbon..According to research, for the C-P coal seam and coal-measures mudstone in china, coal and coal-measures mudstone formed in the Transgression systems tracts (represented by the coal seams and coal-measures mudstone, of the Taiyuan formation) have a better potential for generating hydrocarbon. This is because coals formed in this environment contain more fluorescent vitrinites content, the fluorescent vitrinites were formed in more reduced environments. Coal measures mud-stone contain more mineral pitch matrix A (formed mainly by low grade aquatic living beings). .Generally, coal seams and coal-measures mudstone (represented by the Shanxi formation coal and coal-measures mudstone) formed in high stand systems tracts have relatively poor hydrocarbon potential. This is due to the shallow and low reducibility water in swamp. In this systems tracts, the fluorescent vitrinite content in mudstone is relatively low and mineral pitch matrix is mainly Type "B "(which is mainly composed of plant clastics), but coal seams and coal-measures mudstone, formed in sedimentary environments that is dominated by rheophilous bog, usually contain abundant liptinites and liptidetrinites, which have strengen types of organic and hydrocarbon potential of the coal seams and coal-measures mudstone , sometimes even better than those in transgressive systems tracts. .On the whole, organic types and hydrocarbon potential of coal seams and coal-measures mudstone in low stand systems tracts are always poor..

利用层序地层学、煤岩学、有机岩石学、孢粉学、有机地球化学、油气地质学等学科的基本原理和方法，通过对华北C-P不同体系域的煤和煤系泥岩进行综合对比研究，了解其中好烃囱倚纬商跫翱刂埔蛩兀⒚合档夭阒泻锰囱倚纬煞植嫉牟阈虻夭隳Ｐ图澳芄挥糜谟推试雌兰酆椭傅伎碧娇⑿吕砺鄣幕驹砗头椒ā