The Style Distribution and Hydrocarbon Accumulation of Inverted Structures in Zhu-3Depression
The Style Distribution and Hydrocarbon Accumulation of Inverted Structures in Zhu-3Depression
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发表时间：
2014
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通讯作者：
Li-hua Hu
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作者：
Li-hua Hu
在渐新世以来的右旋扭张应力作用下，珠3坳陷发育了两个反转构造，通过对全区覆盖的高质量三维地震资料的精细解释，采用构造解释方法，结合应力场演化和构造演化分析，分析了两个反转构造的发育和展布规律在珠三坳陷西部断块和南部断块中，将反转构造划分为两种类型五个亚类，结合反转构造带的钻井成果，分析了两个反转构造对油气成藏的意义，研究表明，两个反转构造对油气成藏既有建设性作用，也有破坏性作用，第一反转构造对油气成藏有利，第二反转构造对油气成藏有利，第三反转构造对油气成藏有利第二反转构造有利于原生气藏的形成，也有利于次生油气藏的形成。
Two inverted structures were developed in Zhu-3Depression under the dextral transtensional stress from Oligocene.Through fine interpretation of full-area coverage high quality 3Dseismic data,the dynamical genesis,structural styles,and distribution of the two inverted structures were analyzed by adopting structural interpretation method and based on stress field evolution and tectonic evolution analysis.The study results showed that two inverted structural zones were developed in the western and southern fault blocks of Zhu-3Depression.The inverted structures were divided into two types and five subclasses.In combination with the result of well drilled in the inverted structural zones,the significance of the two inverted structures to the hydrocarbon accumulation was analyzed.Study shows that the two inverted structures both have constructive and destructive effects on hydrocarbon accumulation.The first inverted structure is favorable for primary oil reservoir accumulation,while the second inverted structure is favorable for primary gas reservoir accumulation,and also favorable for secondary oil and gas reservoir accumulation.