根据对国内外致密油气聚集成藏特征的分析，提出致密大油气田存在3种成藏模式，即连续型（深盆气型）、准连续型和不连续型（常规圈闭型）。与连续型油气藏相似，准连续型油气聚集也表现为：油气分布面积较大，无明确边界，也无边底水；源、储邻近，广覆式分布；油气运移主要为非浮力驱动，运移动力主要为异常压力、扩散作用力和毛细管压力，浮力作用受限；运移的方式主要为非达西流，以涌流和扩散流为主。所不同的是：准连续型油气聚集由多个彼此相邻的中小型油气藏组成，油气呈准连续分布；油、气、水分布比较复杂，无显著油、气、水倒置；油气充注以大面积弥漫式垂向排驱为主，初次运移直接成藏或短距离二次运移成藏；储层先致密后成藏或边致密边成藏，且非均质性较强；圈闭对油气聚集成藏具有一定控制作用。研究认为，以深盆气或盆地中心气为代表的连续型油气藏与典型的不连续型常规圈闭油气藏，分别代表了复杂地质环境中致密油气藏形成序列中的两种端元类型，二者之间应存在不同的过渡类型。准连续型油气藏就是这样一种过渡类型的致密油气聚集，并且可能是致密储层中大油气田形成的主要方式。事实上，典型的连续型油气聚集应是那些形成于烃源岩内的油气聚集（如页岩气和煤层气），典型的不连续型油气聚集则是那些形成于烃源岩外近源-远源的常规储层中、受常规圈闭严格控制并且具有边底水的油气聚集；而形成于烃源岩外并且近源的致密油气藏则主要为准连续型油气聚集，其次为非典型的不连续型（常规圈闭型）油气聚集，而像盆地中心气或深盆气那样的连续型聚集则较为少见。

Three patterns of hydrocarbon accumulation in large tight oil /gas fields are proposed ,namely ,continuous accu-mulation (or basin-centered gas type or deep-basin gas type),quasi-continuous accumulation,and discontinuous (con-ventional trap type ) accumulation .Like the continuous accumulation ,the quasi-continuous accumulation also features in large area,without clear boundaries and water lags ,reservoir being adjacent to source rocks and pervasive distribution .In addition,non-buoyancy-driven hydrocarbon migration is dominant .The major driving forcers of migration are overpres-sure,diffusion and capillary pressure ,while buoyancy is limited .The migration is largely in the form of non-Darcy surge flow and diffusion flow .However , the quasi-continuous accumulation is different from the continuous accumulation in many aspects.The quasi-continuous accumulation commonly consists of many adjacent medium to small oil /gas reservoirs and the hydrocarbons are in quasi-continuous distributi

勘探实践证实,车镇凹陷存在油气"倒灌"运移成藏现象。物理模拟实验也证实,油气运移过程中,存在以断裂为运移通道和以骨架砂体为运移通道的两种油气"倒灌"类型。以断裂为运移通道的油气"倒灌",断裂是油气"倒灌"的重要通道,而分子置换是油气"倒灌"的形成机制,其所形成的油气藏规模较小;以骨架砂体为运移通道的油气"倒灌",压力差是控制油气向下运移的重要动力,油气"倒灌"所需的最大压力取决于与其相关的砂体物性,可形成规模可观的油气藏。油气"倒灌"的物理模拟为含油气盆地扩大深层油气勘探提供了理论支持。

The exploration practice proves that the phenomenon of the oil and gas backflow exists in Chezheng Depression, the physical simulation experiments of the oil and gas accumulation confirmed that there are two types of oil and gas intrusion in hydrocarbon migration process,i.e. fracture as migration channel and the sand body framework as migration channel,the former is the important channel of the oil and gas backflow,however molecular replacement is the formation mechanism,and the oil and gas pool is of small size. the latter in sand body framework for migration of oil and gas intrusion,is that pressure difference controlling petroleum downward migration is an important driving force. The desired maximum pressure depends on the related physical property of sandbody,and it can form large-scale oil and gas reservoirs. The research provides theoretical support for the expansion of deep oil and gas exploration in petroliferous basin.

在火山岩油气藏勘探上，一直以裂缝性思想为指导，将火山岩油气藏类比裂缝油气藏进行研究。油气藏储层裂缝形态呈多样性，裂缝的形成受多种因素控制，其物理属性复杂，表现出很强的各向异性。在砂岩、泥质岩和碳酸岩甚至火成岩中均可能存在裂缝性储集层。裂缝多为后期生成，不象其它油气藏具有相应的沉积环境特征。所以裂缝性油气藏比常规油气藏更难于勘探。本文着重强调叠后地震资料的预测流程和解释方案，利用叠后地震资料来预测泰国中部Wichian Buri组火山岩储层裂缝，并取得了良好的检测效果。

Volcanic rock reservoir exploration has always been guided by the fractured thoughts. Fractures morphology of reservoir showed diversity. The formation of the fracture were controlled by many factors and showed strong anisotropy. In sandstone, argillaceous sandstone and carbonate rock even in igneous rock reservoir are possible to find fractured reservoir. Facture were always paulopost, unlike other reservoir has the characteristics of the corresponding sedimentary environment. Fractured reservoirs are more dififcult to explore than conventional reservoirs. In this paper, the authors emphasis on the forecast flow and explain plan of post-stack seismic data, using post-stack seismic data to predict fractured reservoir, and achieved good test results.

探讨隐蔽油气藏在层序格架内的展布规律及预测方法。在层序地层学理论指导下，综合运用钻井、测井以及地震资料，对渤海秦南凹陷东南斜坡区古近系东营组层序地层特征进行了精细研究，把东营组划分为3个Ⅲ级层序：东三、东二和东一层序，并建立东三层序的沉积模型，总结了隐蔽油气藏成藏模式。研究结果表明：在东三层序晚期水体下降，物源供给充足，储层十分发育并且分布范围广，与东二层序稳定分布的泥岩相配合可形成大规模的地层油气藏；早期水体逐渐上升，可形成超覆尖灭岩性油气藏。东二层序厚层泥岩之下，受湖平面变化控制的砂体展布特征和油气输导条件是隐蔽油气藏的成藏主控因素。秦南凹陷隐蔽油气藏勘探潜力巨大。

This paper discusses the distribution laws and prediction methods of the subtle oil and gas reservoir in a sequence framework.Guided by the sequence stratigraphic theories,this paper studies the sequence stratigraphy features of Paleogene Dongying Formation in the southeast slope of the Qinnan depression in Bohai Bay in detail by using well drilling,logging and seismic data.Dongying Formation is divided into 3 third-order sequences,that is Sequence Dong 3 ,Sequence Dong 2 andSequence Dong 1 .The depositional model of Sequence Dong 3 is constructed and the petroleum accumulation model of the subtle oil and gas reservoir is concluded.The research results show that in the late period of Sequence Dong 3 reservoir well developed and widely distributed with water level falling and the abundant material supplying, which can form a large-scale formation reservoir combined with the stable distribution of mudstone in Sequence Dong 2 .In the early stage,the water gradually rises and an

通过采集泌阳凹陷王集-新庄地区岩心样品，对其中包裹体进行盐度特征分析、镜下观察及均一温度测定；结果表明王集-新庄地区包裹体分为两期，与盆地埋藏史和热史研究划分的早、晚两个成藏期相对应。结合生排烃史综合分析，该区油气分两期成藏，早期油气成藏期主要发生在核一段末期～廖庄组沉积期，为小规模油气成藏，该期主要生成低熟油；晚期油气成藏期主要发生在廖庄末抬升期，为大规模油气成藏，是形成现今油田的主要成藏期。利用油气包裹体进行油气成藏研究，必须和宿主矿物的矿物岩石学分析及其他成藏期次分析方法结合使用，才能使分析结果更加客观可信。

Panzhihua vanadic titanomagnetite deposit is confined to Hercynian layered gabbro rock bodies which may be divided into 6 petrofacies zones and 4 ore-bearing horizons based on rock association, mineral assemblage, texture and structure as well as mineralization. The mineralization was controlled by structure, lithology and wall rock. The studied area may be divided into SE and NW magnetic anomalous belts which are composed of 9 magnetic anomalies and 2 prospect areas.