坳陷湖盆三角洲沉积砂体结构类型及特征--以鄂尔多斯盆地上三叠统延长组为例  

Sandbody structure types and characteristics of delta deposition in Depression lake basin--Taking Yanchang Formation of Upper Triassic in Ordos Basin as an example

作　　者：李元昊 李建雄 王高虎 吴大全 Li YuanHao;Li Jianxiong;Wang Gaohu;Wu Daquan(School of Earth Sciences and Engineering,Xi'an shiyou University,Shanxi Xi'an 710065;The fourth Oil Production Plant of PetroChina Changqing Oilfield Company,Ningxia Yinchuan 718500)

机构地区：[1]西安石油大学地球科学与工程学院,陕西西安710065 [2]中国石油长庆油田分公司第四采油厂,宁夏银川718500

出　　处：《石化技术》2021年第4期124-126,共3页Petrochemical Industry Technology

基　　金：国家科技重大专项(编号:2016ZX05050006);西安石油大学科研创新团队建设计划(编号:2013KYCXTD03)联系资助。

摘　　要：根据砂地比及砂体垂向接触关系,将砂体结构划分为四种类型,即连续叠加型、间隔叠加型、单层型和薄互层型,每类又细分为2~3个亚类。从三角洲平原、三角洲前缘到前三角洲,砂体结构由连续叠加型、间隔叠加型、单层型过渡到多期互层型;其结构类型受沉积物供给与可容纳空间共同制约。According to the ratio of sand and the vertical contact relationship of sand bodies,the sandbody structure was divided into four types,they are continuous superposition type,interval superposition type,single layer type and thin interbed type.Each type was subdivided into 2-3 subclasses.From Delta plain,delta front to prodelta,sandbody structure transits from continuous superposition type,interval superposition type,single layer type to multi-stage interlayer type.Sandbody structure type was constrained by sediment supply and accommodation space.

关 键 词：砂体结构 三角洲沉积 储层非均质性 鄂尔多斯盆地 延长组 

分 类 号：P618.13[天文地球—矿床学]