【作者】 宋章强；

【导师】 王兴志； 张帆；

【作者基本信息】 西南石油学院 ， 地球探测与信息技术， 2005， 硕士

【摘要】 本文以沉积学、地层学、古生物学、储层地质学以及成岩作用等国内外相关研究成果为理论指导,以野外剖面和钻测井资料为研究对象,采用传统野外、室内和现代测试手段相结合的研究方法,利用地震和测井资料处理结果,并结合区域地质资料和前人研究成果,通过对洋渡溪构造及邻区三叠系——侏罗系岩石、沉积相(沉积环境)及对储层的影响等方面的研究后认为:1、区内各组段地层在岩性等方面有着较为明显的差异,在各井之间可追踪对比。2、研究区内三叠系——侏罗系主要有碳酸盐岩、膏盐岩和碎屑岩三大类组成,间夹含有少量煤层,火山岩极少,其中晶粒白云岩和粉～细砂岩为主要的储集岩,主要分布在嘉陵江组嘉二段、嘉四段和沙溪庙组、凉高山组,储层类型分别为裂缝～孔隙型和孔隙型为主。3、区内研究层段沉积相可划分为碳酸盐岩台地、盆地、滨岸平原、湖成三角洲和湖泊5个相及若干各个亚相和微相,其中台地边缘滩亚相、台内点滩亚相和蒸发台地亚相中的云坪微相以及湖泊相中的滨浅湖亚相、三角洲前缘亚相、滨岸平原相中的河道亚相是有利于储层形成与演化相带,集中分布于飞仙关组的飞三段中上部、嘉陵江组的嘉二段和嘉四段局部以及须家河组、凉高山组和沙溪庙组的局部。4、区内研究层段储层除受到沉积作用控制外,还受到成岩作用的影响,如压实压溶作用、胶结作用、云化作用和溶解作用,前两者属于破坏性成岩作用,后两者属于建设性成岩作用。5、储层按岩性分为晶粒白云岩型储层、颗粒灰岩型储层和砂岩型储层三大类,晶粒白云岩型储层在嘉陵江组嘉二~2段最为发育,主要由粉晶白云岩组成,颗粒灰岩型储层在飞仙关组飞三段种较为常见,主要由鲕粒灰岩构成,砂岩型储层在凉高山组和沙溪庙组中常见,岩性以中～细粒石英砂岩和长石砂岩为主,岩屑砂岩较少。6、在纵向上,川东洋渡溪及邻区有多套储层发育,其中三叠系嘉陵江组嘉二~2段为最为区内有利的储层发育段,其次是沙溪庙组、凉高山组和须家河组,其他层段储层不太发育。从横向上看,嘉陵江组嘉二~2段有一定的连续性,分布范围广,是区内勘探的首要目标;沙溪庙组和凉高山组砂岩,平面上分布面积广,厚度大,是区内浅层勘探的有利目标;须家河组砂体厚度巨大,在区域上储集性能良好,是区内有利挖潜目标。更多还原

【Abstract】 Under the guidance of related theories and research result at home or abroad, such as sedimentology, stratigraphy, paleontology, reservoir geology and diagenesis...etc. , with the open country profile and drill or well logging data as research object, adopt the traditional open country, indoor test the research that means combine together with modern method, make use of the seism and the well logging data processing results, and combine the areal geology data and the research result of the past, after studied the rock, sedimentary facies(sedimentary environment) and the influence to reservoir of Triassic System and Jurassic System in Yangduxi Fabric and the vicinage, the conclusion is as follows: 1. Each formation inside the area has the more obvious difference in the rock etc., tracking and stratigraphic correlation can be done between each well. 2. Triassic System and Jurassic System mainly has the carbonate rock、 the cream salt rock and clastic rock three major type inside the area, clips to imply a little amount coal seam, the volcanic rock is very few, among them, crystalline dolomite and siltstone or packsand is main reservoir rock, mainly distributing in the second and The fourth Jialingjiang Formation, Shaximiao Formation、 Lianggaoshan Formation, the reservoir type are lords for the fracture - pore type and the pore types respectively. 3. For the formation inside research area, sedimentary facies can divide to carbonate platform、 basin、 onshore plain, lacustrine delta and lake five facieses, and some subfacies or microfacies also; among them , platform margin subfacies、 min bank inside platform, the dolomite-plateaux microfacies within evaporate platform subfacies, shallow and shore subfacies in lake facies, deltaic front subfacies and river channel subfacies of the onshore plain facies are advantageous to the reservoir formation, the concentration distributes to medium and top part in the third Feixianguan Formation, some parts of the second and forth Jialingjiang Formationd and some parts of Xujiahe, Lianggaoshan, Shaximiao Formation. 4.The reservoir inside the area research Formation is controlled by sedimentation, still under the influence of the diagenesis in addition, such as press and solid pressolution, cementation, dolomitizationand dissolutions, front both belong to the destructiveness constructive diagenesis, empress both belong to the constructive diagenesis. 5. The reservoir can be divided into crystalline dolomite reservon\ the grainstone reservoir and sandstone reservoir three major types basis on rock; crystalline dolomite reservoir often can be found in the second Jialingjiang Formation, mainly be constitute by the crystalline dolomite; grainstone reservoir can be found in the third Feixianguan Formation more familiar, mainly be constitute by the oolite limestone; sandstone reservoir is familiar in Lianggaoshan formation and Shaximiao formations, the rock mainly be constitute by medium - tiny particle quartzose sandstone and arkose, the lithic sandstone is less. 6. In the Lengthways, there are several reservoirs in Yangduxi and theVicinage in Eastern Sichuan. Among them, the second Jialingjiang formation in the Triassic System is the best the beneficial reservoir, the next is Shaximiao formation, Lianggaoshan formation and Xujiahe formation. Reservoir does not really develop in other formation. From horizontal, the second Jialingjiang formation have certain continuity and distribute the scope wide, is an initial exploration target in area; sandstone in Shaximiao and Lianggaoshan formation are beneficial exploration target in the shallow inside the area by the reason of the wide and thick sandstone formation; thick sand body in the Xujiahe formation is a better reservoir in wide area, can be look at the alive exploration target in the area.更多还原