汤原断陷煤成油初步研究

PRIMARY STUDY OF COAL FORMED OIL IN TANGYUAN FAULTED BASIN

从有机地化和石油地质２方面初步探讨了汤原断陷下第三系的煤成油问题。通过对有机碳、生烃潜量、总烃、氯仿沥青“Ａ”及其组分分析、元素分析、热解色谱、干酪根镜下鉴定、同位素等地化资料的分析研究，认为汤原断陷下第三系在地史时期曾发生过煤成油的过程。以地震资料和１口井的地质地化资料为基础，应用盆地模拟技术，在纵横２个方向上区划了可能形成煤成油的层段和范围。通过对面原断陷有利地质条件分析，以及将其和吉普斯兰盆地对比，认为汤原断陷具备煤成油生成、运移、聚集和保存的地质条件。

Abstract The problem of the coal-formed oil in the Tangyuan Faulted Basin in two aspects of geochemistry and petrofeum geology was probed. It has been pointed out that coal-formedoil has generated,migrated in the Eogene Paleogene of Tangyuan Faulted Basin throughanalysing those data such as organic carbon content,kerogen vitrinite reflectance,isotopicanalysis,total hytrocarbon content,chloroform asphalt content″A″and its components,el-ements,pyrolysis chromatography. Based on the data of seismic reflectance profile and thedata of a drilling well,basin modelling technics were applied to identify the strata and theircovered area in which oil might have formed. It has been made sure that coal-formed oil inthe Tangyuan Faulted Basin could be migrated ,accumulated and preserved through,aftercomparing the geological condition of Tangyuan Faulted Basin with that of Gppsland Basin.SUBJECT TERMS:Tangyuan Faulted Basin,coal formed oil,basin model,migrate,kero-gen