THE RELATIONSHIP BETWEEN FAULTS AND HYDROCARBON ACCMULATION IN SHANGHE AREA OF JIYANG DEPRESSION
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摘要: 利用断层落差法、生长指数法和泥岩涂抹SGR法分析了商河油田断层活动性和封闭性特征,并结合油气分布分析了断层与油气运聚之间的关系。研究结果表明,商河油田1号、2号、3号及6号断层在馆陶期持续活动,是油气向中浅部沙一段等储集层运移的有利垂向通道;同时,具有良好侧向封堵条件的断层容易使油气聚集成藏,认为SGR=0.75是断层侧向封闭的临界条件。Abstract: Using the methods of fault throw, growth index and SGR,the characteristics of fault activity and sealing capability are analyzed. And the migrating direction of hydrocarbon under the affect of faults in the Shanghe Oilfield are studied with hydrocarbon distrubution. The results indicate that three major sectional faults are favorable for the vertical migration of hydrocarbon due to their continuous movement in the Guantao depositional period. Those faults with good lateral sealing capacity can help accumulation of hydrocarbon if the SGR number reaches 0.75.
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Key words:
- Shanghe Oilfield /
- fault activity /
- fault sealing /
- hydrocarbon accumulation
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