南堡5号构造带沙河街组火山岩储层特征及气藏勘探潜力分析

发布时间：2018-03-01 08:25

本文关键词： 火山构造火山岩单体火山岩气藏沙河街组南堡凹陷　出处：《东北石油大学学报》2017年02期 　论文类型：期刊论文

【摘要】：南堡凹陷5号构造带火山岩广泛发育,是油气富集的有利区域。利用地震识别、测井分析、岩心观察等技术,以及薄片分析、稀土元素与微量元素分析等方法,研究南堡5号构造带沙河街组火山岩的岩性、物性及分布规律。结果表明:火山岩发育受东、西两个火山构造控制,发育面积较大,西部火山构造以"丘状"酸性火山岩为主,东部火山构造以"层状"基性火山岩为主;火山岩储层主要发育原生的熔岩气孔、火山碎屑岩的粒间孔、次生的斑晶溶蚀孔、基质溶蚀孔、构造裂缝及晶间微裂缝等6种储集空间类型;储集物性主要表现为中—低孔、低渗储层。南堡5号构造带火山岩单体叠合面积大,与沙河街组三段、一段优质烃源岩直接接触,成藏条件十分有利。
[Abstract]:Volcanic rocks are widely developed in No.5 structural belt in Nanpu Sag, which is a favorable area for oil and gas enrichment. By means of seismic identification, log analysis, core observation and other methods, such as thin slice analysis, rare earth element and trace element analysis, etc., The lithology, physical properties and distribution of volcanic rocks of Shahejie formation in No.5 structural belt of Nanpu are studied. The results show that the development of volcanic rocks is controlled by two volcanic structures in the east and west. The volcanic structure in the eastern part is mainly composed of "layered" basic volcanic rocks, where primary lava pores, intergranular pores of pyroclastic rocks, secondary porphyry dissolution pores, matrix dissolution pores are mainly developed. There are six types of reservoir space, such as structural fractures and intergranular microfractures, the reservoir physical properties are mainly medium-low porosity and low permeability reservoirs. The volcanic rocks in Nanpu No. 5 structural belt have a large superposition area and are in direct contact with the third member of Shahejie formation and the primary high-quality source rocks. The conditions for reservoir formation are very favorable.
【作者单位】：中国石油冀东油田分公司勘探开发研究院;
【基金】：国家科技重大专项(2011ZX05006-006)
【分类号】：P618.13

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