摘要：The hydrocarbon migration and accumulation of the Suqiao deep buried-hill zone, in the Jizhong Sub basin, the Bohai Bay Basin, eastern China, was investigated from the perspective of paleo-fluid evidence by using fluid inclusions, quantitative fluorescence techniques (QGF), total scanning fluorescence method (TSF) and organic geochemical analysis. Results show that the current condensate oil-gas reservoirs in the study area once were paleo-oil reservoirs. In addition, the reservoirs have experienced at least two stages of hydrocarbon charge from different sources and/or maturities. During the deposition of the Oligocene Dongying Formation (Ed), the deep Ordovician reservoirs were first charged by mature oils sourced from the lacustrine shale source rocks in the fourth member of Shahejie and Kongdian Formations (Es-4+Ek), and then adjusted at the end of Ed period subsequently by virtue of the tectonic movement. Since the deposition of the Neogene Minghuazhen Formation (Nm), the reservoirs were mainly charged by the gas that consisted of moderate to high-maturity condensate and wet gas sourced from the Es-4+Ek lacustrine shale source rocks and mature coal-derived gas sourced from the Carboniferous-Permian (C-P) coal-bearing source rocks. Meanwhile, the early charged oil was subjected to gas flushing and deasphalting by the late intrusion of gas. The widely distributed hydrocarbon inclusions, the higher QGF Index, and FOl (the frequency of oil inclusions) values in both gas-oil and water zone, are indicative of early oil charge. In addition, combined with the homogenization temperatures of the fluid inclusions (<160 degrees C) and the existence of solid-bitumen bearing inclusions, significant loss of the n-alkanes with low carbon numbers, enrichments of heavier components in crude oils, and the precipitation of asphaltene in the residual pores suggest that gas flushing may have played an important role in the reservoir formation. (C) 2017 Elsevier Ltd. All rights reserved.

关键字：Fluid inclusions Quantitative grain fluorescence Total scanning fluorescence Hydrocarbon migration and accumulation Suqiao buried-hill zone Bohai Bay Basin

ISSN号：0264-8172

卷、期、页：卷: 86 页: 512-525

发表日期：2017-09-01

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：MARINE AND PETROLEUM GEOLOGY

参与作者：鲁雪松,王元杰,焦亚先

通讯作者：刘念,沈芳宇,冯乾乾,冯乾乾

第一作者：邱楠生,常健

论文类型：期刊论文

论文概要：刘念,邱楠生,常健,沈芳宇,冯乾乾,鲁雪松,王元杰,焦亚先,冯乾乾，Hydrocarbon migration and accumulation of the Suqiao buried-hill zone in Wen'an Slope, Jizhong Subbasin, Bohai Bay Basin, China，MARINE AND PETROLEUM GEOLOGY，2017，卷: 86 页: 512-525

论文题目：Hydrocarbon migration and accumulation of the Suqiao buried-hill zone in Wen'an Slope, Jizhong Subbasin, Bohai Bay Basin, China