التفاصيل البيبلوغرافية
| العنوان: |
渤海湾盆地济阳坳陷埕岛—桩西潜山油气特征与来源. (Chinese) |
| العنوان البديل: |
Characteristics and source of oils and gases in Chengdao-Zhuangxi buried-hill, Jiyang Depression, Bohai Bay Basin. (English) |
| المؤلفون: |
郭志扬, 刘 华, 程 斌, 杨贵丽, 徐昊清, 张芷晴 |
| المصدر: |
Natural Gas Geoscience; Oct2020, Vol. 31 Issue 10, p1437-1452, 16p |
| مصطلحات موضوعية: |
PETROLEUM industry, KEROGEN, PETROLEUM, AQUATIC organisms, RESERVOIRS, SHALE oils, HYDROCARBON analysis |
| الملخص (بالإنجليزية): |
To reveal the formation process of buried-hill reservoirs in Jiyang Depression of Bohai Bay Basin, the hydrocarbon source and charging mode were analyzed based on the physical properties and geochemical charac⁃ teristics of oil and gas samples in Chengdao-Zhuangxi buried-hill belt. The oils in study area are from lake facies source rock with aquatic organisms, and the gas is oil-associated gas from sapropelic kerogen. Under the influence of multi-source supply, physical properties and geochemical characteristics of oils and gas show significant difference between structural belts but no obvious difference between layers. The 4-methyl sterane is not developed in the oils of Chengbei 11 buried-hill, reflecting that the oils and gases are from Es3 source rock of Chengbei Sag and charge along Chengbei fault. The oil maturity is relatively low in Chengbei 20 buried-hill with variable content of gammacerane, reflecting the mixed source of Es1 and Es3 in Shanan Sag and accumulate laterally by unconformity. The oil maturity is high in Chengbei 30 buried-hill and Zhuanghai buried-hill, which are from Es3 source rock of Huanghekou Sag and charge along Chengbei 30 fault and hydrocarbon supply window. The oils and gases of Zhuangxi buried-hill are from Es3 source rock of Gubei Subsag and charge through hydrocarbon supply window. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
潜山油气藏具有多种油气来源和充注成藏方式。为揭示渤海湾盆地济阳坳陷潜山油气藏的 形成过程，以油气物性、地球化学特征为基础，分析了埕岛—桩西潜山带的油气来源及充注方式。 结果表明：研究区原油来自低等生物为主的湖相烃源岩，天然气为腐泥型干酪根在热解生烃过程 中产生的原油伴生气；受多源供烃的影响，油气物性和地球化学特征在不同层系之间无明显差异， 但在不同构造带间差异显著。埕北 11 潜山原油中 4⁃甲基甾烷不发育，是埕北凹陷沙三段烃源岩生 成的油气沿埕北断层垂向注入而形成；埕北 20 潜山的原油成熟度相对较低、伽马蜡烷含量高低不 等，为来自沙南凹陷沙一段和沙三段的混源油，通过不整合侧向充注而聚集；埕北 30 潜山和桩海潜 山的原油成熟度高，是黄河口凹陷沙三段烃源岩生成的油气沿埕北 30 断层和供烃窗口充注而形 成；桩西潜山的油气来自孤北洼陷沙三段，经桩南断层从供烃窗口充注进入潜山。 [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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