西湖凹陷平北地区断层发育,圈闭以复杂断块为主,断裂与油气藏关系密切,断层的发育期次、开启与封闭、组合样式,直接影响到油气的运移、聚集和富集程度。平北地区发育了全盛型、早盛型和中盛型3种类型断层,断层的活动时期、断层两盘的岩性配置以及泥岩涂抹等是影响断层封闭性的主要因素。平湖组早盛型断层封闭性最好,平湖组—花港组全盛型断层封闭性相对较差。不同断层组合圈闭的油气富集程度具有明显差别,顺倾向断层组合圈闭油气富集程度最高,反倾向断层组合圈闭油气富集程度相对较低,顺倾向与反倾向断层组合圈闭油气富集程度居于中等,根据以上认识优选目标钻探效果良好。

In the Pingbei area of the Xihu Sag in the East China Sea, faults are well-developed, and traps are mainly complex blocks. The generation stage, open/close and combination style of faults directly affect the migra-tion, accumulation and enrichment of oil and gas. The faults in the study area can be classified into 3 types:peak-flourishing, early-flourishing and mid-flourishing. The active period of faults, the lithologic configuration at both sides of the faults and shale smear are the key elements influencing fault sealing. The faults of early-flourish-ing type in the Pinghu Formation boast the best sealing while those of the peak-flourishing type in the Pinghu-Huagang Formations are relatively worse. There are obvious differences in the degree of hydrocarbon accumulation between various combinations of faults. The combinations of cis-dipping faults show the highest degree of hydro-carbon accumulation;the combinations of anti-dipping faults show the lower degree of hydrocarbon accumul

在前陆冲断带天然气成藏的诸多控制因素中，断裂的发育决定着圈闭的形成、油气的运移聚集以及盖层的封闭性，以断层发育为核心的断源储盖的空间组合样式决定了油气的输导能力、圈闭的封闭性和充满度，从而最终控制了天然气的成藏。根据库车坳陷前陆冲断带不同地区的构造特点、生储盖组合关系以及成藏主控因素的不同，解剖已知油气藏的成藏特征，构建了库车坳陷前陆冲断带断源储盖组合样式，并阐述了4种不同断源储盖组合对天然气成藏的控制作用。其中，克深型断源储盖组合为最佳，向下既沟通侏罗系气源，向上又未断开库姆格列姆膏盐岩盖层，既是天然气运聚的良好通道，又未破坏盖层的封闭性，从而造成天然气的连片分布。克拉苏型由于断层不仅断开了巴什基奇克储层，而且还断开了膏盐岩盖层，因此圈闭的侧向封堵性是其成藏的关键。大宛齐型是盐上成藏，穿盐断层的输导以及盐上圈闭的有效性是其成藏的关键。依其克里克型则是自生自储，其成藏的关键是上倾控圈断层是否封闭以及断层两盘的岩性对接关系。

Fault development plays a vital role in all the factors controlling gas accumulation in foreland thrust belt, which determines the migration and accumulation of oil and gas, the formation of trap, and the sealing capacity of caprocks. Therefore, the combinations of fault-source-reservoir-cap, of which fault development is the core, determine the channel capacity of oil and gas, the sealing features and the fullness degree of traps, and ultimately control the accumulation of gas. According to the structure characteristics, the association of source-reservoir-cap, the main controlling factors of accumulation and the analysis of the known hydrocarbon reservoirs in different regions of the foreland thrust belt in Kuqa Depression, the combinations of fault-source-reservoir-cap were founded and the control of different combinations on gas accumulation was elaborated in this paper. The combination of fault-source-reservoir-cap in Keshen is the most optimal, which is connected with Jurassic ga

阿姆河右岸区块是阿姆河盆地重要的油气富集区,构造多期次性,断裂复杂多类型。通过研究表明,研究区基底地层以正断裂发育为主,明显控制地层沉积厚度。盐下断裂演变为逆断层,并伴生大量圈闭。盐上地层以走滑断裂为主,既发育有正花状又有负花状构造样式,平面上既有左旋走滑,又有右旋走滑断裂。阿姆河右岸油气成藏模式主要有沿断层成藏模式和同层成藏模式,基于此提出了沿凹陷、顺断层找圈闭的勘探思路。

The right bank of the Amu Darya block is an important oil and gasenrichment area of the Amu Darya basin, tectonic tracture complicatedmultiphase, multi type. Through the study,the study area basement stratato faults, are obviously controlled by the sedimentary thickness. Saltfracture evolution as a reverse fault, accompanied by a large number of traps. Salt formation with strike slip fault,not only developing normalflower makeup and negative flower shaped structure style, plane bothsinistral and dextral strike slip fault. The right bank of the Amu Darya oil and gas reservoir forming model mainly along the fault reservoir modeland the same layer accumulation model, based on this proposed along the exploration thinking, find traps along fault depression.

为了明确迈陈凹陷东部构造特征与油气成藏的关系,利用地震、钻井等资料对新生代断裂几何学特征、活动性进行了分析。结果表明,研究区经历了断陷、断坳过渡、坳陷等演化过程,受到多期次构造运动的影响,分层差异变形,发育了上、下两套断裂体系,分别为早期张性断裂和晚期张扭性断裂,这些断裂既具有新生性,也具有对早期断裂的继承性、改造性,因此构成了丰富多样的组合样式。不同断裂类型及组合对油气成藏的控制作用也存在差异,边界断层控制了该区的基本构造格架及烃源岩的形成分布;断裂组合的多样性使得圈闭类型多样;早期消亡的断裂可起到良好的遮挡作用,继承性活动断裂或向下断至源岩层的晚期断裂可起到油气向浅层圈闭运移的通道作用。

In order to clearly make out the relation between tectonic characteristics of eastern Maichen Sag and hydro-carbon accumulation,the data of seism,drilling,etc.were used to analyze Cenozoic fault geometry feature and activity.And the result indicates that the Maichen sag has experienced evolution processes of rifting stage,rifting and sagging stage and sagging stage.By the influences of multistage tectonic movements,the sag had characteristics of differential delaminating deformation and developed two sets of fault systems which are early extension faults and late tensional shear faults,respec-tively.These faults have both new ones and,inherited and reconstruction ones from early stage fractures.As a result,these faults contributed to a variety of combination styles.Different fault types and combinations have different controls on hydro-carbon accumulation.Boundary faults controlled basic tectonic framework and source rocks distribution.The diversity of fault combination resulted in var

巴西陆上Solimoes盆地属克拉通盆地,其沉积组合和油气成藏非常特殊。文中重点研究盆地的形成演化及构造特征、沉积地层特征、石油地质特征,分析盆地成藏特征及成藏模式,确定成藏主控因素。盆地经历了多期构造运动,古生代经历了多次沉降,中生代抬升,新生代以挠曲沉降为主,构造样式以先正后逆的反转构造为特点。沉积地层以古生界为主,岩性组合复杂,包含了碎屑岩、碳酸盐岩、蒸发岩、冰碛岩及火山岩等多种岩石类型,层系之间均为不整合接触。主要烃源岩为上泥盆统页岩,总有机碳含量高,热演化程度高;主要储层为石炭系Jurua组砂岩;主要盖层为石炭系-二叠系蒸发岩,封盖能力强,生储盖配置好。盆地内构造圈闭发育,以背斜、断背斜为主。盆地成藏模式特殊,尽管烃源岩埋深较浅,却在火山岩侵入的烘烤作用下快速成熟并进入高成熟演化阶段——生气阶段;风成砂具有良好的储集性能,储层孔隙由于埋藏深度小而保留,不整合面和复活的基底断裂是油气运移的良好通道。断层相关的构造圈闭控制油气的聚集。

Onshore Solimoes Basin in Brazil is an intra-cratonic basin , being very special in its depositional succession and its hydrocarbon accumulation mechanisms .This paper focuses on summarization of the formation and evolution of the basin ,its structure and depositional characteristics and its key petroleum geologic features ,as well as analysis of hydrocar-bon accumulation mechanism and the main controlling factor for accumulations .The basin has experienced multiple tec-tonic movements,including multiple subsidence during the Paleozoic ,a shear stress dominated Mesozoic age ,and flexure subsidence in Cenozoic .The deformation style features in change from early normal faulting to later inversion and thrust-ing.The deposits in the basin are mainly of Paleozoic age ,and are complicated in lithologic assemblages ,consisting of si-liciclastics,carbonates,evaporites,glacial deposits,igneous,etc.All the sequences are in unconformable contacts .The ma-jor source rock is the Upper Devonian sha