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- Permian bioclastic limestone and bioherm are the most favorable reservoirs. 二叠系生屑灰岩和生物礁为最有利的储层。
- The bioclastic shoal and ooid shoal are common in geological history. 滩一般包容了坝、脊、洲、丘等沉积体。
- The Dawan Formation built up of alternating bioclastic limestone and shale belongs to the inner shelf subfacies. 大湾组的生物碎屑灰岩与页岩互层属于内陆棚亚相。
- Calcarenite silicon-wackestone of the upper and lower silicon members deposit f rom contour current s and occur on the lower of the carbonate slope. 等深流沉积物形成了上、下硅质层段的砂屑硅质粒泥灰岩 ,主要分布于斜坡下部。
- The major rock type of the reservoir is grainstone,in which the oolitic spariteand bioclastic limestone are the best reservoir rocks. 该储层的岩石类型主要为粒屑灰岩,以其中的亮晶鲕粒灰岩和生物清灰岩为最佳储集岩;
- The results indicate that the tempestite in the area has lots of rock types including clastic rocks, bioclastic limestones and volcaniclastic rocks. 结果表明,该凹陷风暴沉积岩石类型丰富,包括各类碎屑岩、生物灰岩和火山碎屑岩。
- There are rich bivalve and brachiopodous fossils within the bioclastic limestone and calcareous mudstone in the Buqu Formation in age from Bathonian. 布曲组中的生物碎屑灰岩和钙质泥岩层中产大量的双壳类和腕足类化石,时代为中侏罗世巴通期。
- The sedimentary facies of Carboniferous Bioclastic Limestone Member is mainly classified into shore and carbonate platform facies in Tarim basin. 塔里木盆地石炭系生屑灰岩段的主要沉积相类型划分为滨岸相和碳酸盐台地相两大类。
- The middle fan sand in Es3, the bioclastic beach bar at the bottom of Esl, the river sand in Ed formed very best reservoir. 东营组为前扇三角洲亚相过渡到扇三角洲前缘亚相到扇三角洲平原亚相再到辫状河沉积的递进模式。
- The shoal (or bank) and shoal facies are important types of carbonate deposits.The bioclastic shoal and ooid shoal are common in geological history. 摘要滩或滩相是碳酸盐沈积中的重要类型,常见的有生物碎屑滩和鲕粒滩。
- The genesis of mud mound (also called as micrite mound), which is mainly composed of lime mud, only a few bioclast, has still not been resolved. 摘要微晶丘主要由灰泥组成,仅见少量生物碎屑,其成因尚无圆满解释。
- So, the bioclastic banks and the biological psammiticpsephitic banks should be important targets for petroleum exploration in this area. 台地边缘以西为开阔台地和台内洼地沉积。塔中1号坡折带向东进入斜坡和盆地相区。
- Those of grain banks in shallow lake mainly include ooid limestones with spar or micrite, bioclastic limestones, intraclastic limestones and grain lime-stones. 浅湖颗粒滩有亮晶或泥微晶的鲕粒灰岩、生屑灰岩和内碎屑灰岩,其次为含陆屑颗粒灰岩;
- The reefs, the bioclastic banks and the biological psammitic-psephitic banks that are associated in form of supper and lower backreefs are hard to form favorable reservoir facies. 礁和与之呈伴生的生屑滩、生物砂砾屑滩为本区优质的储集岩相,而礁后单独发育的中低能砂屑滩则不易形成优质的储集层。
- Grainstones are the main part of the section, among which the oolites, intraclast limestones and most bioclast limestones are cemented by sparry calcite. 颗粒灰岩在剖面中占绝大多数,其中,鲕粒灰岩、内碎屑灰岩和多数生物碎屑灰岩均为亮晶方解石胶结。
- Massive bioclastic limestone from the middle of the sequence was believed to be formed under the aerobic conditions, supporting by both ecological and geochemical features. 块状灰岩的生物特征和地球化学特征均指示常氧沉积环境;
- The dominant lithologies of the middle part are microcrystalline bioclastic limstone intcrbedded with coarse-grained dolomitic and calcareous quartzose sandstone. 以富含腕足化石为特色,还可见珊瑚、 、非 有孔虫、介形虫、三叶虫、苔藓虫、腹足类等生物化石。
- Vertically, these dolostones are associated with oil shale, mudstone, bioclastic limestone and volcanic rocks, and interpreted as the secondary replacement products. 且白云岩在深湖、半深湖、浅湖、滩坝环境均有发育,垂向上与油页岩、泥岩、生物灰岩及火山岩共生。
- On the basis of a large number of core data and petrophysical information,the interpretation chart for deriving permeability of bioclastic limestone is made. 岩石白云化中等的地层是寻找有效产层的主要区域。根据大量的岩心分析数据和岩石物理研究资料,建立了生物碎屑灰岩渗透串解释图版。
- The results show that the main rock types in Yingshan formation are micritics, calcarenite and dolomite, of which, micritics and calcarenite have the best development and the widest distribution. 研究区内鹰山组主要岩石类型为泥晶灰岩、砂屑灰岩和白云岩,其中泥晶灰岩、砂屑灰岩发育最好,分布最广;