Reservior prediction is very important in the exploration stage by the major type of lithologic-structural and lithologic reservior at Yaoyingtai area.It is a problem of geophysical exploration in the area that is the thin reservoir,high sand ratio and small velocity difference between sand and mud.It is the bottleneck of subtle oil and gas reservoirs exploration to some extent.Denglouku formation and Quan 1section is the oboject of study in text.According the analysis the character of the reserivor,several inversion method are tried.The logging constrained wave impedance inversion method has low resolution,and it can not meet the need of production.The geological regularity,seismic and logging information are taken into account in the stochastic inversion method,and it make a breakthrough in the seismic band width limit.It has high resolution and the sand is easy to be describied in the result of inversion.

According to the comprehensive research of source rock burial history,geothermal history,organic matter maturity history,hydrocarbon generation rate evolution and cumulative hydrocarbon generation amount in the Dongling slope belt of Changling fault depression,it is considered that the source rock of K1h1 had two massive hydrocarbon generation and expulsion effects,which happened at the sedimentary end of K1h and during the basin depression stage.The first hydrocarbon generation and expulsion stage resulted in many self-generated and self-stored lithologic and stratigraphic oil reservoirs of K1h,while the second hydrocarbon generation and expulsion stage resulted in many structural and structural-lithological oil and gas reservoirs of K1h and its overlying fault-depression formations.The hydrocarbon accumulation process of the two expulsion stages can by concluded to the subtle oil reservoirs accumulation model of the fault-depression period and the structural oil and gas reservoirs accumulation model of the depression period,the next exploration direction can thus be pointed out according to the accumulation models.

在全面剖析长岭断陷东部查干花地区早白垩世火山岩分布规律的基础上,对查干花地区火山岩的成藏机理进行了深入研究,总结了查干花地区火山岩气藏的成藏模式。查干花地区的主要烃源岩来源于次凹内部的沙河子组,查干花地区火山岩主要沿达尔罕、达北、查东3条断裂呈带状展布,保证了火山岩带具有充足的气源条件。油气运移的输导体系是由断层、裂缝和不整合面的三维空间组合,研究区的三大断裂带、多期发育的裂缝和不整合面对天然气的运移作用至关重要。储集空间是决定储层是否有效地关键因素,查干花地区火山岩储层储集空间由多种原生、次生孔隙、裂缝组成,有效地改善了火山岩的储层物性,是查干花地区形成各类火山岩圈闭和气藏的保证。查干花地区发育3种类型火山岩气藏,即构造-岩性气藏、岩性-构造气藏和岩性气藏。

Manghan fault depression is situated in southwestern uplifted area of Songliao basin,being reconstruction basin.Without sufficient understanding of its tectonic evolution,the analysis about its petroleum geological condition can not meet the requirements of petroleum exploration.With balanced section method,study of tectonic evolution of Manghan fault depression has been conducted, and the tectonic character in different period has been understood.In addition,the tectonic framework has been made clear in the study area,and the influence of the tectonic evolution on hydrocarbon source rock,reservoir,trapping and the major control factors for HC accumulation have been pointed out.

Yaoyingtai Oilfield is a big scale hydrocarbon region in the south of Songliao Basin discovered in recent years.According to analysis of hydrocarbon accumulation conditions in Qingshankou formation in Yaoyingtai region,major control factors of the formation of oil reservoirs includes source rocks,reservoir and migration.The oil reservoirs are mainly located around Qian’an sag which is the hydrocarbon generating center,and the accumulation and distribution of oil reservoirs is controlled by source rocks.Faults are not only the pathways for hydrocarbon migration,but also control the distribution of different types of oil reservoirs,and the distribution of sand body and reservoir physical properties are controlled by sediment microfacies.The main target for exploration of next step is the region near the hydrocarbon generating centers,faulted zone and sand body development zone.

茫汉断陷的构造特征复杂,构造格局及构造演化过程不清,制约了该区石油地质条件研究的深入。在该区地震资料解释的基础上,对茫汉断陷的主干断裂及构造格局进行了分析,利用平衡剖面技术对茫汉断陷的构造演化过程进行研究,结果表明茫汉断陷内断裂发育,其中茫汉断裂和德胜断裂是控盆断裂,乌拉斯台西断裂包格特断裂控带断裂;茫汉断陷具有"两洼夹一隆"的构造格局,北部次凹具有西断东剥的箕状断陷构造特征,而南部次凹具有东断西超的半地堑构造特征;茫汉断陷的构造演化过程经历了裂陷期(义县组沉积时期)、断陷期(九佛堂组-沙海组沉积时期)、断坳过渡期(阜新组沉积时期)和坳陷期(泉头组沉积时期-至今)4个演化期次。

从火山岩岩性、岩相特征、储集空间类型等方面研究了腰英台地区火山岩储层特征,分析了火山岩储层物性的影响因素.研究表明:区内火山岩储层主要为流纹岩与凝灰岩,岩相主要为溢流相和爆发相,孔隙类型主要为孔缝组合,储集空间为气孔、溶蚀孔、裂缝等;储层物性影响因素主要有火山岩的岩性、相带、埋深以及构造作用.