源断盖时间匹配有效性的研究方法及其应用  

Research method and its application to effectiveness of time matching of source-fault-caprock

作　　者：付广[1] 梁木桂 邹倩[2] 牟大伟 李乔乔 FU Guang;LIANG Mugui;ZOU Qian;MU Dawei;LI Qiaoqiao(School of Earth Sciences in Northeast Petroleum University,Daqing 163318,China;Research Institute of Petroleum Exploration&Development,PetroChina,Beijing 100083,China;Xingang Company in Xinjiang Oilfield,PetroChina,Karamay 834000,China;No.1 Oil Production Plant,Daqing Oilfield Company Limited,Daqing 163001,China)

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中国石油勘探开发研究院,北京100083 [3]中国石油新疆油田分公司新港公司,新疆克拉玛依834000 [4]大庆油田有限责任公司第一采油厂,黑龙江大庆163001

出　　处：《中国石油大学学报（自然科学版）》2020年第1期25-33,共9页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(41872157)。

摘　　要：为了研究含油气盆地下生上储式生储盖组合油气分布规律,在源断盖时间匹配有效性及其影响因素研究的基础上,通过确定源断配置输导油气时期与断盖配置封油气能力形成时期,将二者叠合建立一套源断盖时间匹配有效性的研究方法,并将其应用于渤海湾盆地南堡凹陷东二段储层的源断盖时间匹配有效性的研究中。结果表明:南堡凹陷东二段储层封闭型和不封闭型断盖配置封气能力形成时期分别为明化镇组下段沉积早期和明化镇组上段沉积早期,均晚于源断配置在东一段沉积时期的输导天然气时期,不利于天然气聚集成藏;而封闭型断盖配置封气能力形成时期为明化镇组下段沉积早期,早于源断配置在明化镇组-第四系沉积时期的输导天然气时期,有利于天然气聚集成藏;不封闭型断盖配置封气能力形成时期为明化镇组上段沉积早期,与源断配置在明化镇组-第四系沉积时期的输导天然气时期同期,较有利于天然气聚集成藏,源断盖时间匹配有效性相对较好;这与目前南堡凹陷东二段储层中大量天然气分布相吻合,表明该方法用于研究源断盖时间匹配有效性是可行的。In order to study the oil-gas distribution patterns in lower generation-upper accumulation source rock-reservoir-cap rocks in oil-gas bearing basins, a set of research methods for the effectiveness of time matching of source-fault-caprock were established. The methods were derived based on influence factors and the effectiveness of time matching of source-fault-caprock, and by determining the transporting hydrocarbon period of source-fault configuration and the period of sealing ability of oil and gas formed of fault-caprock configuration. The new methods were then used to research study the effectiveness of time matching of source-fault-caprock of the reservoir in the 2nd member of Dongying Formation in Nanpu Depression of Bohai Bay basin. The results show that the period of sealing ability of gas formed of closed type fault-caprock configuration of the reservoir in the 2nd member of Dongying Formation in Nanpu Depression is the early deposition of lower member of Minghuazhen Formation and that for the unclosed type is the early deposition of upper member of Minghuazhen Formation. They are both later older than the transporting gas period of source-fault configuration during the deposition of the 1st member of Dongying Formation, which is unfavorable for gas accumulation. The period of sealing ability of gas formed of closed type fault-caprock configuration is the early deposition of lower member of Minghuazhen Formation. It is soon earlier than the transporting gas period of source-fault configuration during from the deposition of Minghuazhen Formation to Quaternary, which is favorable for gas accumulation. The period of sealing ability of gas formed of unclosed type fault-caprock configuration is the early deposition of upper member of Minghuazhen Formation. It is the corresponding period with the transporting gas period of source-fault configuration during from the deposition of Minghuazhen Formation to Quaternary, which is also favorable for gas accumulation, and the effectiveness of time matching of source-

关 键 词：源断盖 时间匹配 有效性 研究方法 

分 类 号：TE122[石油与天然气工程—油气勘探]