辽东湾锦州25-1 南潜山变质岩储层四性特征研究

根据岩心、常规测井和分析化验等资料，运用岩石学、储层地质学、测井地质学等理论和方法，对辽东湾锦州25-1 南地区潜山变质岩储层岩性、物性、含油性、电性特征及其相互关系进行了研究。该区岩性以片麻岩类和碎裂岩类为主，局部出现变质花岗岩，在平面上呈条带状分布。变质花岗岩和碎裂岩含油性较好，片麻岩较差。物性分析表明，研究区储集层物性整体相对较好，但非均质性强。在常规双侧向测井曲线上，变质岩有利储层正差异明显；在孔隙度测井曲线中，声波时差测井和中子测井值高，密度测井值低。锦州25-1 南地区潜山变质岩有利储层厚度在西部较薄，东部较厚。系统研究锦州25-1 南地区潜山变质岩的四性特征，对指导该区油气勘探有重要意义。

Four properties characteristics of JZ25-1S buried hill metamorphic reservoir in Liaodong Bay

According to the analysis of core, conventional log and formation micro-resistivity scan, the four properties （lithologic characteristic, physical property, oiliness and electrical property） characteristics and the relationships among them of JZ25-1S buried hill metamorphic reservoir in Liaodong Bay are studied based on the theory and method of lithology, reservoir geology and well-logging geology. The lithology of JZ25-1S ribbons with dominated gneiss and cataclasite and partly metamorphosed granite. Cataclasite and metamorphosed granite have good oil-bearing probability, while gneiss is poor. The laboratory test reveals that reservoir properties of JZ25-1S buried hill are relatively good, but still very heterogeneous. The favorable reservoirs are characterized by obvious positive separation in dual lateral log, high in acoustic log and neutron log and low in density log. The thickness of the favorable metamorphic reservoirs in JZ25-1S buried hill is thin in the west and thick in the east. This comprehensively study of the four properties characteristics of JZ25-1S buried hill metamorphic reservoir is favorable for exploration activity in this area.