摘要
通过综合运用流体包裹体、储层烃类荧光特征及盆地埋藏史和热演化史等资料分析，认为华庆地区长8油藏存在两期油气运移、充注和成藏过程：第一期是在晚侏罗世油气发生运移和充注，形成了发黄（褐）色荧光的储层沥青（低成熟油），但未成藏；第二期是早白垩世晚期，油气大规模运移、充注和成藏储层演化史揭示，压实作用是华庆地区储层变致密的最主要因素，铁方解石、伊利石和绿泥石等成岩矿物亦是影响储层性能的重要因素，储层沥青是影响储层性能的另一非沉积、成岩作用的重要因素、，通过对控制储层性能的多因素与石油运移、充注和成藏的时序关系综合分析，袁明华庆地区长8油层组储层演化与石油成藏的关系为储层先致密后成藏的特征。综合研究成果表明．华庆地区应加强储层砂岩中云母等软组分，铁方解石和伊利石及储层沥青的低含量区与绿泥石膜舍量高值区带勘探、
Through data analysis by comprehensive application of fluid inclusion, hydrocarbon fluorescent characteristics of reservoirs, history of the basin＇s burying and heat evolution history, etc., Chang8 oil reservoir in Hua-Qing region is considered to have two-phase oil-gas migration, filling and accumulation-into-reservoir processes： the first phase, oil-gas migration and filling occurred in fate Jurassic, and formed reservoir bitumen （low mature oil） giving yellow （hrown） fluoresce, but did not form reservoir; the second phase, large-scale oil-gas migration, filling and accumulation into reservoir occun＇ed in the late period of Early Cretaceous. The reservoir evolution history reveals that compaction is the most principal factor raaking the reservoir tight in Hua-Qing area. Ferreous calcite, illite, chlorite and other diagenetic minerals are also important factors impacting the performance of reservoir strata. The reservoir bitumen is another important non-sedimentary or -diagenetic factor influencing the performance of reservoir strata. The comprehensive analysis of multiple factors that control the reservoir performances and of the time series relation among petroleum migration, filling and accumulation into reservoir imticates the relationship between Chang8 oil reservoir group evolution and the formation of petroleum reservoir in Hua-Qing region is the feature of being firstly tight then forming reservoir. Comprehensive research achievements indicate that exploration should be strengthened in areas with low contents of mica and other soft components and ferreous calcite, illite in the reservoir sandstone, and areas with low content of reservoir bitumen, and high content of chlorite membrane in Hua-Qing region.
关键词
华庆地区
长8油层组
成藏期次
储层演化史
储层沥青
Hua-Qing area
Chang8 oil group
stage of reservoir formation
reservoir evolution history
reservoir bitumen
作者简介
冯胜斌（1973-）：中国地质大学（北京）地球科学与资源学院毕业，硕士，现在长庆油田分公司从事油藏评价生产研究。通讯地址：陕西省西安市未央区长庆兴隆园邮编：710018 E-mail：fsb_cq@petrochina．com．cn
