There are 5 depositional systems in the region . they are : panhe and jishan delta systems coming from chengning heave near the northwest border of the region , shuangfen delta located in southwest part of the region coming from luxi dome , qudi fan - delta located in the southeast of the studying area and the sub - fan near fault or fan - delta of the southern part of the region 确定了沙三段沉积时期发育的五种沉积体系类型,即来自凹陷西北边界埕宁凸起的盘河三角洲体系和基山三角洲体系、来自鲁西隆起、分布在凹陷西南部的双丰三角洲体系、东南部的曲堤(扇)三角洲体系,南部的近岸水下扇/扇三角洲体系。
Complex subtle trap further falls into structural lithology , structural unconformity and lithology unconformity reservoirs . so far , the main theories to study subtle trap include early seismic stratigraphy and late sequence stratigraphy , between them sequence stratigraphy is most effective , its stand tract concepts for different depositional systems is of important significance 目前,世界上研究隐蔽油气藏的理论主要有早期的地震地层学理论及新兴的层序地层学理论,其中层序地层学理论最为引人注目,且是寻找隐蔽油气藏的最好的方法,其不同水位期对不同沉积体的寻找具有指导意义。
Under the guidance of theories of sedimentology , petroleum geology and sequence stratigraphy , and through the comprehensive analysis of outcropsrock , cores , well logs and testing outcomes of rock gas , this paper studies the depositional systems of neopaleozoic and the character of aeration zone in tabamiao area of ordos basin . the result indicates that the object layers are divided into two depositional systems , the barrier seacoast depositional systems are recognized on upper carboniferous taiyuan phase with tidal flat , lagoon and barrier bar sedimentary deposit 本文根据沉积学、石油地质学和层序地层学理论,综合利用地表露头、钻井岩芯、测井曲线资料和试气成果资料,对鄂尔多斯盆地塔巴庙区块晚古生代沉积体系及含气层特征进行了研究。结果表明,研究区内目的层段可以划分为2个沉积体系: ( 1 )上石炭统太原期为有障壁海岸沉积体系,发育潮坪?泻湖?障壁砂坝沉积。
There are 5 depositional systems in the region . they are panne and jishan delta systems coming from chengning heave near the northwest border of the region , shuangfeng delta located in southwest part of the region coming from luxi dome , qudi fan - delta located in the southeast of the studying area and the sub - fan near fault or fan - delta of the southern part of the region . based on the study of sedimentary facies and depositional systems , 11 lithological traps are predicted 在等时地层格架内对沙三段各中期基准面旋回内的沉积相和沉积体系进行了详细研究,确定了沙三段沉积时期发育的五种沉积体系类型,即来自凹陷西北边界埕宁凸起的盘河三角洲体系和基山三角洲体系、来自鲁西隆起、分布在凹陷西南部的双丰三角洲体系、东南部的曲堤(扇)三角洲体系,南部的近岸水下扇/扇三角洲体系。
From macro to micro and from qualitative to quantitative evaluation , this paper , applicating the theory and technological method of sequence stratigraphy , seismic stratigraphy - , reservoir sedimentology , combining with multispecialty and mutisubject theory that used geology , log , seismic , mathematics and earth physics and basing on synthetic application of regional geology , core , log , seismic and petrophysical property data , has studied the inner structure and characteristic of sequence , system tract and depositional system . combining with high resolution seismic data and log data , this paper makes a profound analysis of the space pattern and reservoir predictability of depositional system on oil and gas pools of honghaoersute sag 本文采取从宏观到微观,从定性到定量的研究思路,应用层序地层学、地震地层学、储层沉积学的理论和技术方法,结合区域地质、岩芯、测井、地震、物性资料,采用多专业、多学科理论和方法相结合。阐明层序、体系域和沉积体系的内部构成及其特征,与高分辨地震资料和测井资料的处理技术相结合,深入解剖洪浩尔舒特凹陷油气藏成藏组合的沉积体系空间配置、储层预测,在等时地层框架内对含油层段( k _ 1ba组、 k _ 1bt ~ 1及k _ 1bt ~ 2段)进行精细解剖,有目的地寻找以地层、岩性圈闭为主的隐蔽油气藏。
Directed by new theories and approaches of sedimentology , diagenesis and reservoir evaluation , focused on marine clastic reservoir of donghe sandstone member , in tarim basin , strata and depositional system of donghe sandstone member are classified ; typical depositional facies types , depositional model and horizontal distribution have been studied through depositional facies analysis of 17 single wells , combined with seismic data . major diagenetic events , stages and " four history " collaboration have been systematically analysesed , furthermore , the relation between reservoir diagenesis and porosity evolution has been built ; thorough studies on reservoir lithology , physical property and pore structure , reservoir development related to depositional envoironment , diagenesis and tectonic has been discussed ; reservoir has been evaluated and predicted by five influential parameters drawn from the results of the study on depositional facies , diagenesis and reservoir characteristic . in the end , favourable reservoir body distribution has been pointed out 本论文以沉积学、沉积岩石学、沉积成岩作用与储层地质学、储层评价技术的新理论新方法为指导,以塔里木盆地巴楚组东河砂岩段海相碎屑岩储层为主要研究对象,通过17口典型井的单井地层沉积相分析和成岩作用分析,结合地震资料,对东河砂岩段地层和沉积体系进行了详细划分,研究了东河砂岩段分布区的典型沉积相类型、沉积模式及其平面展布特征;系统分析了东河砂岩段碎屑岩储层的主要成岩事件、成岩期次及其四史配置关系,指出了储层成岩与孔隙演化的关系;深入研究了东河砂岩段碎屑岩储层的岩石学特征、物性分布、孔隙结构等特征,着重讨论研究了沉积环境、成岩作用和构造作用对储层发育的影响;运用“权重”评价法结合地层沉积相、成岩演化和储层特征研究的结果,选取了五个对储层发育有重要影响的参数对储层进行了整体的评价和预测,指出了塔里木盆地东河砂岩段储层有利储集体的分布状况。
2 . the new idea about classification of oil and gas accumulation unit for exploration have been put forward , which holds the sound basis for the perpendicular and plane position and prediction of carbonate reservoir in feixianguan guan group . 3 . the depositional systems of feixianguanguan group in taphrogenic consist of carbonate platform facies ( include oolitic bar , oolitic beach , lagoon , flats ) , margin shelf and trough . there are five development staged in taphrogenic trough 3 、指出裂陷槽中飞仙关组沉积体系在平面上由碳酸盐岩台地相(包括滩坝相、鲕滩相、泻湖相、潮坪相) 、陆棚相、裂陷槽相组成,裂陷槽经历了发生期、发展期、稳定期、过渡期及衰亡期五大发展演化阶段,每一阶段各发育不同的沉积相,且以一种沉积相为主。
According to the regional geology and the character of the lithofacies and well - logging facies , 4 kinds of sedimentary facies and 3 kinds of depositional system : marine system , delta system and fluvial system have been identified . the sedimentary facies of taiyuan formation is marine faceis , up to sanxi formation , the sedimentary facies is delta facies , the xiashihezi formation hel and he2 member are braided river facies , he3 member is meandering river facies . the mains types of sandstone of taiyuan formation are lithic quartzarenite and quartzarenite ; the mainly types of sandstone of sanxi formation and xiashihezi formation is litharenite 通过对20余口井2000多米岩心的观察和对40几口井的测井数据解释、对比,在研究区目的层段识别出了12种基本岩相和9种测井相类型,在区域沉积背景和单井相划分的基础上,根据岩相和测井相组合特征,在太原组?下石盒子组划分出4种沉积相和若干沉积微相,并进一步划分为3类沉积体系:滨浅海沉积体系、三角洲沉积体系和河流沉积体系。
Through using microfacies analysis and heavy mineral , the source direction is determined . through logging facies and sand body contour , the depositional system is determined . through using wave - classification , stratimagic facies analysis , the reservoir distribution is predicted in the unknown fields 相分析方法技术解决了储层的类型及其宏观展布问题,在本文中,系统运用了沉积微相研究方法、轻重矿物等确定物源方向、运用测井相、砂体厚度图等方法确定宏观沉积体系,运用波形分类、 stratimagic相分析技术预测未知区储层的宏观展布。
Based on well logs , three - dimension seismic profiles , cores and other basic data , author recognized the sequence horizons of high - scale by the changes of a / s ratio , and established high - resolution chronostratigraphic framework using multi - term base - level cycles of high - resolution sequence stratigraphy , combining sequence theory with sedimentology . the depositional system characters and distribution were outlined and the prospective areas for stratigraphic traps were defined : jishan and jiangjiadian 本文是以钻井、地震资料、岩心和各种分析化验资料为基础,以多级次基准面旋回为参照面的高分辨率层序地层学理论与研究方法将层序地层分析技术与沉积学原理紧密结合起来,运用a / s比值的变化趋势可以识别高级次层序界面,建立高分辨率层序地层对比格架。