To define the distribution rule of laumintite and its relations to production capacity, and to guide the favorable reservoir forcast, by the comprehensive analysis of slice, clay, oil test, and the stratum distribution, this paper suggests that the cement of P3w in zhongguai region is mainly laumontite, whose content is positive correlated to corrosion pore content and oil production. The existence of laumontite could persist nearly 3%~8% more porosity. The distribution of laumontite is controlled by sedimentary facies and the distance to alkalinity water source in P2w, (Laumontite is developed transversely in places near lake level and fan-delta front facies, and developed vertically in overlapped main-stream sandbodies. The areas east to JL2—J205, which are filled with underwater distributary stream sandbod-ies, are the favorable reservoir position with the developed laumontite. This area is near to acid-source depression and is communicated vertically by faults. The favorable oil and gas shown in initial exploration suggest the tremendous exploration potential of this area. )%为明确中拐地区上乌尔禾组浊沸石胶结物展布规律及其与产能的关系,指导中拐地区优质储层预测,分析铸体薄片、黏土矿物、试油结果及区域地层展布.结果表明:中拐地区上乌尔禾组储层以浊沸石胶结为主,且与溶孔含量及产能呈正相关,存在可多保留3％～8％的孔隙度.浊沸石分布受控于砂体沉积微相类型、距P2ω碱性水介质源距离,平面上主要发育在湖岸线附近及水下扇三角洲前缘相带,垂向上主要分布于叠置的主河道砂体内.JL2 —J205一线以东的水下分流河道区带浊沸石较发育,靠近酸源凹陷有通源断裂沟通,为浊沸石溶孔优质储层发育区,钻探油气显示良好,勘探潜力巨大.
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