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牛庄洼陷岩性油藏成藏机理及运聚模式
发表时间：2010-08-31 浏览量：1654 下载量：770
| 全部作者： | 王勇 |
| 作者单位： | 中国石化胜利油田有限公司地质科学研究院 |
| 摘 要： | 在对东营凹陷牛庄洼陷岩性体油藏油气分布及油源特征分析的基础上，从该区压力演化角度出发，应用隐蔽输导体系理论，分析了该区岩性油藏的成藏过程。结果表明：岩性体油藏多数为他源性多期幕式置换成藏。在区域性地层超压释放过程中，高压岩性体中地层水与早期充注的油气首先通过隐蔽输导体系向外部岩性体排出，在外部破裂岩性体中聚集成藏，高压岩性体在释放高压流体的同时，岩性体本身进行了卸压，由于岩性体物性远好于周围泥、页岩，卸压往往较泥、页岩彻底，加上该区高压主要形成于泥、页岩烃源岩中，在下次超压释放前某一段时间，岩性体内部压力相对周围泥、页岩较低，加上此时高压破裂产生的断层和微裂缝还有部分尚未完全闭合，有利于油气聚集成藏。 |
| 关 键 词： | 石油、天然气能；岩性体；压力演化；隐蔽输导体系；幕式置换成藏；油气聚集 |
| Title： | Formation Mechanism and Accumulation Model of Lithilogical Pertroleum Reservoir in Niuzhuang Subsag |
| Author： | WANG Yong |
| Organization： | Institute of Geological Sciences, Sinopec Shengli Oilfield Co. Ltd. |
| Abstract： | Based on the hydrocarbon occurrence and source rock analysis of lithologic body reservoir in Niuzhuang subsag of Dongying, this paper directs the formation of oil and gas reservoir of Es3, by using the law of subtle passage system starting with pressure evolution perspective. The result shows that sand lens reservoir are mainly allochthonic, multistage, episodic and replaced migration and accumulation. In the process of regional overpressure releasing, the stratum water and early�filled hydrocarbon in high pressure sand lens discharge firstly through the migration pathway and simultaneously the sand lens get the pressure relieved. Because the permeability of sand is far better than the surrounding mudstone and shale’s, its pressure relief is more completed. Along with the facts that high pressure mainly generates in mudstone and shale, the pressure of sand lens is lower than its surroundings before the next releasing. Therefore, the sand lens are favorable for hydrocarbon accumulation. |
| Key words： | oil and natural gas energy; lithologic body; pressure evolution; subtle passage system; episodic replacement; hydrocarbon accumulation |
| 发表期数： | 2010年8月第16期 |
| 引用格式： | 王勇. 牛庄洼陷岩性油藏成藏机理及运聚模式[J]. 中国科技论文在线精品论文，2010，3（16）：1661-1667. |
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