sheet sand meaning in Chinese
层状砂层
厚度均匀的砂岩层
平伏砂层
平伏沙层
砂席
上覆砂层
席状砂层
Examples
- Non - flattening delta front sheet sand - evidence from outcrops and subsurface
来自露头和地下的证据 - Abstract : in loess hilly - gully region covered by sheet sand , soil water erosion process is different from typical loess hilly - gully region because of worse natural environment and loose land surface material
文摘:在片沙覆盖的黄土丘陵区，由于恶劣的自然环境及松散的地表组成物质，土壤的水蚀过程明显地不同于典型的黄土丘陵区。 - According to the abundance well logging , mud logging and core analysis data , gaotaizi reservoir has been classified into four sand group with the principle of cycle comparison and classified control . based on the detailed study of lithologic character , sedimentary structure , paleontologic fossils , depositional sequence , rock association and logging data , the microfacies of the studied area are divided into such seven types : subaqueous distributary channel microfacies ; river mouth bar microfacies ; subaqueous interdistributary channel microfacies ; subaqueous crevasse channel microfacies ; subaqueous natural barrier microfacies ; distal bar microfacies ; delta front sheet sand microfacies . the characteristic of each sedimentary microfacies are described detailedly
通过研究大量测井、录井资料和岩芯资料，依据“旋回对比，分级控制”的原则，把研究区高台子油层划分为g 、 g 、 g 、 g四个砂层组。通过对研究区岩性、沉积构造、古生物、沉积序列、岩石组合及测井曲线特征进行研究的基础上，认为研究区高台子油层属于三角洲前缘亚相沉积，并将研究区沉积微相划分为：水下分流河道、河口坝、水下分流河道间、水下决口扇、水下天然堤、远砂坝、席状砂等七种微相类型。 - The development of sedimentary environment of yanchang formation be analyzed and discussed further . based on the analyses of all kinds of sedimentary deposit . under the direction of the theory and methods of sequence stratigraphy , 4 type i sequence boundary could be recognized in the study area , according to the marked bed including plane of deflation , scour , the plane of lithological salutation , structural transformation , down cutting channel sheet sand and so on . type i sequence consists of low stand systems tract , transgressive systems tract and high stand systems tract
本文采用当代层序地层学理论和方法，利用风化剥蚀、冲刷面、岩性岩相突变、结构转换面、构造机制转换面等层序界面的识别标志，将研究区延长组划分为四个层序，其层序界面都为型层序界面，具有三元体系域结构特征，由低水位体系域、水进体系域和高水位体系域三个部分组成。 - Using sedimentary facies analytical and formation inverse technique , the depositional characteristics and distribution of dujiatai formation of this area were described , disclosing that delta front facies and prodelta facies were mainly developed in dujiatai formation . material source are mainly from southern and northeast of the working area . sand types are mainly of delta front subwater distributaries channel sand body , river mouth bar and sheet sand body with large degree of planar variation
2 .采用沉积相分析及储层反演预测技术，对新齐14井区杜家台油层储层沉积特征及展布特征进行了详细描述，揭示出本区主要目的层杜家台油层属t -扇二角洲沉积，发育扇三角洲前缘亚相及前扇三角洲亚相，物源主要来自于工区南部及东北部，发育的砂体类型土要为扇三角洲前缘水下分流河道砂体、河口坝砂体及席状砂砂体。