东濮凹陷及其周缘地区上古生界煤系沉积有机相及煤成烃潜力

东濮凹陷上古生界具有优越的煤成烃物质基础，油气生成潜力取决于沉积有机相。通过对东濮凹陷及其周缘地区煤系沉积有机相的类型和分布特征的研究，结合烃源岩生烃热模拟实验，探讨了东濮凹陷上古生界煤成烃的潜力。研究表明：东濮凹陷上古生界沉积有机相可划分为6种类型，镜质腐殖有机相是研究区主要的有机相类型，太原组下部和太原组上部–山西组下部还发育少量的含腐泥腐殖有机相和壳质腐殖有机相等富氢有机相类型，山西组上部较发育惰质腐殖有机相，东濮凹陷北部发育富氢有机相，特别是庆古2井区和毛4、毛8井区有机相类型好，而南部则发育镜质腐殖有机相和惰质腐殖有机相。不同有机相成烃潜力存在明显差异，镜质腐殖有机相的生油气潜力可与我国典型的煤成油气盆地相媲美，而富氢有机相的生烃潜力更高。但由于东濮凹陷上古生界热演化程度的差异，各个区块油气生成可能存在较大差异，毛4井区成熟度低，油气产率低；庆古2井区R_max在1.0%左右，处于液态烃类生成高峰期，煤成油产率较高，文古1井区处于成熟–高熟区，有较高的煤成气产率，但仍未达煤成气产率的高峰；南部马古5井处于高过成熟，具有较高的煤成气潜力，但由于南部遭受岩浆作用的影响，其煤成气潜力需要评估岩浆作用影响的程度。

Sedimentary organic facies and hydrocarbon-forming potential of coal in Upper Paleozoic coal measures in Dongpu depression and its peripheral areas

Dongpu depression in the Upper Paleozoic has a superior material basis for hydrocarbon generation, and the potential of oil and gas generation depends on the sedimentary organic facies. Based on the research of coal and its periphery sedimentary organic facies types and distribution characteristics of Dongpu depression, thermal simulation experiment of hydrocarbon source rocks, coal formed hydrocarbon potential of the Upper Paleozoic in Dongpu were discussed. Research shows that the Upper Paleozoic sedimentary organic facies in Dongpu depression can be divided into 6 types, vitrinite humic organic facies is the main research field of organic facies, Taiyuan Formation and lower part of Shanxi Formation have also developed a small containing sapropelic humic organic and chitin humic organic facies and the upper part of Shanxi Formation has a relatively inert organic humic facies, while hydrogen-rich organic facies develops in the northern part of Dongpu depression. In particular, wells Qinggu 2, Mao 4 and Mao 8 have good organic types, while vitreous humus organic facies and inert atmosphere humic organic facies develop the southern part. There are obvious differences in hydrocarbon generation potential between different organic facies. The potential of vitrinite humic organic facies is comparable to that of typical coal -derived oil and gas basins in China, while the hydrogen-riched organic facies has higher hydrocarbon generation potential. Because of differences of the degree of thermal evolution in Dongpu depression, various blocks have differences in oil and gas generation, samples of well Mao 4 have low maturity and low oil and gas production; well Qinggu 2 had Rmax around 1%, was at the liquid hydrocarbon generation peak, had higher coal-derived oil yield, well Wengu 1 was in the mature and high mature area, had higher coal-derived gas yield, but did not yet reach the peak of coal gas yield; southern well Magu 5 was at high mature, had high coal gas potential, because the south suffered magmatism, for the assessment of its coal gas potential it is necessary to take the degree of influence of magma into account.