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- Yanchang Formation sandstone 延长组砂岩
- The Upper Triassic Yanchang Formation in the Fuxian area is totally a very low porosity and permeability sandstone reservoir. 研究表明,陕北富县延长组总体为特低孔渗砂岩储层。
- The main types of sandstone pore for Yanchang formation are remainder intergranular pore, solutional void in feldspar, solutional void in detrtu... 其中剩余粒间孔占比例最大,其次为成熟早期成岩自生矿物溶蚀而形成的次生孔隙。
- The main conclusions are as follows: 1.The sandstones of Yanchang Formation in the south of Ordos basin mainly composed of lithic feldspathic sandstone and feldspathic sandstone. 主要取得以下成果和认识:1.;延长组砂岩储层主要为细粒的岩屑质长石砂岩和长石砂岩;总体上成份成熟度较低、结构成熟度中等。
- Dark mudstones and the turbidites of deep lake facies were discovered recently in the Member 1 of Yanchang Formation,Upper Triassic in Ordos Basin. 鄂尔多斯盆地三叠系延长组长1段发育一套深湖相浊积岩及数层暗色泥岩。
- The core of Yanchang Formation Chang-7 high quality source rock (oil shale) is black,hard,light,and it looks slip-shape after demorphism. 鄂尔多斯盆地延长组长7优质烃源岩(油页岩)井下岩芯外观呈黑色、质硬、手感较轻,露头风化后呈纸片状。
- Dark mudstones and the turbidites of deep lake facies were discovered recently in the Member 1 of Yanchang Formation, Upper Triassic in Ordos Basin. 摘要鄂尔多斯盆地三叠系延长组长1段发育一套深湖相浊积岩及数层暗色泥岩。
- The main parent rock of the early Yanchang Formation is complex metamorphic rock of Archean and metavolcanic rock-sedimentary rock system. 延长组早期沉积的母岩主要为太古宙的复杂变质岩系及下元古界的变火山-沉积岩系。
- The results show that the Interval 6 of Yanchang Formation is composed of lithic feldspathic sandstones, feldspathic lithic sandstones and feldspathic sandstones. 研究结果表明长6油层组浊积岩的岩石类型为长石岩屑砂岩、岩屑长石砂岩和长石砂岩；
- Several kinds of biomarker of the source rocks in the Member 1 of Yanchang Formation, Upper Triassic in Shaanbei area have been detected by GC and GC/MS. 本文研究了陕北地区三叠系延长组长1段烃源岩的生物标志化合物特征及其有机质母源类型和有机质成熟度。
- Rare earth elements(REE) and trace elements were used to analyse source rock and source direction of Yanchang Formation of the Upper Triassic in Ordos Basin. 利用稀土元素和微量元素,分析鄂尔多斯盆地中部上三叠统延长组母岩类型和物源方向。
- The Hujianshan Area is dominated by fluvial and lacustrine-fluviolacustrine delta sediments in Yanchang Formation,which locates in the south extensional of delta system of Anbian. 胡尖山地区延长组主要以河流、湖泊一河湖三角洲沉积为主,属于安边三角洲体系向南部延伸部分。
- There is good oil and gas exploration potentiality in the low permeability chang 4+5 reservoir on Yanchang Formation in Jiyuan Area(abbreviate chang 4+5,), Ordos Basin. 鄂尔多斯盆地姬塬油田延长组长4+5油层组（简称长4+5）低渗储层具有良好的油气勘探潜力。
- YANG Xiao-ping,QIU Yi-nan.Formation process and distribution of laumontite in Yanchang Formation (Upper Triassic)of Ordos Basin[J].Acta Sedimentologica Sinica,2002,20(4):628-632. [2]杨晓萍;裘怿楠.;鄂尔多斯盆地上三叠统延长组浊沸石的形成机理、分布规律与油气关系[J]
- Aim To discuss the characteristic of high-resolution sequence stratigraphy of member 6 of Yanchang Formation,Upper Triassic in Yujiawan area,Zichang,Ordos Basin. 目的探讨鄂尔多斯盆地子长地区上三叠统延长组长6段基准面旋回层序的识别方法、结构特征、变化规律及成因机理。
- Saturated hydrocarbon fractions of free oil, sealing oil and bound oil, which are extracted from six oil sands of Yanchang Formation in Xifeng oilfield of northwestern Ordos Basin, Northwest China, have been analyzed by GC/MSD(6890N/5973N) in order. 摘要对鄂尔多斯盆地西峰油田三叠系延长组六个油砂样品中游离烃、封闭烃、束缚烃的饱和烃馏分进行了GC-MS分析。
- The short-term base-level cyclic sequences in the third oil reservoirs of the Yanchang Formation in the Huachi Oil Field, Ordos Basin are examined on the basis of well logs and high-resolution sequence stratigraphy. 摘要本文运用高分辨率层序地层学的基准面旋回原理，以钻井、测井资料的综合研究为基础，对华池油田长3油层组进行短期基准面旋回层序分析，将其划分为向上“变深”非对称型、向上“变浅”非对称型与对称型3种基本层序类型和更多的亚类型。
- Abstract： Yanchang Formation Chang-6 reservoir is uppermost oil layer of Mesozoic Erathem in Ordos basin, proving up oil geology reserves and base oil yield occupy more 70 percent. 摘 要： 延长组长6油层是鄂尔多斯盆地中生界最主要的含油层段，探明石油地质储量和原油产量占70%25以上。
- Boshan,which is near by the Bohai Bay Basin, is the area with good preserved upper Shihezi Formation sandstones outcrops. 博山地区是渤海湾盆地邻区上石盒子组露头保存比较完整的地区。
- Characteristics and Origin of Fractures in the Extra Low-Permeability Sandstone Reservoirs of the Upper Triassic Yanchang Formation in the Ordos Basin 鄂尔多斯盆地上三叠统延长组特低渗透砂岩储层裂缝特征及成因
