胜坨地区下降盘沙四上亚段沉积储层特征研究  

Researches of depositional and reservoir feature in E_2s_(41) downthrown side of the Shengtuo area

作　　者：杨丽娟[1] 乔俊[1] 王天福[1] 黄晖[1] 

机构地区：[1]中国石化胜利油田地质科学研究院,山东东营257015

出　　处：《油气藏评价与开发》2015年第2期7-10,共4页Petroleum Reservoir Evaluation and Development

摘　　要：综合运用铸体薄片、扫描电镜、粒度、测井、岩心等资料,对胜坨地区下降盘沙四上亚段沉积储层特征进行了分析。结果表明,胜坨地区下降盘沙四上亚段包括含砾砂岩、砾状砂岩、粗砂岩等岩石类型,以含砾砂岩、砾状砂岩最为发育。粒度概率曲线包括宽缓上拱式、低斜两段式,岩心观察可见重荷构造、块状层理、冲刷面、平行层理等沉积构造,反应重力流兼具牵引流的沉积环境。岩心分析表明该区砂砾岩体具有较低的成分成熟度和结构成熟度,孔隙类型以次生孔隙为主,孔隙结构以中孔中细喉型为主。By analyzing manifold datum, including thin section analysis, scanning electron microscopy analysis, grain size analysis, log interpretation and core observation, the depositional feature and reservoir feature of E2S41 downthrown side of the Shengtuo area in Dongying depression were studied. The results shows that the reservoir there includes pebbly sandstone, psephitic sandstone, thick sandstone and so on. The probability cumulative grain size curves mainly include uphill arched pattern and bi-segment pat？tern. Sedimentary structures mainly include load structure, blocky bedding, scour surface and parallel bedding, etc, which reflects that the depositional environment has both gravity flowing deipsots and deep-water traction deposits. The study on core observation shows that the resevior has the composition and structure of low maturity card, which is medium porosity and low permeability reser？voir. The pore types mainly are secondary porosity.

关 键 词：胜坨地区 下降盘 沙四上 沉积特征 储层特征 E2S41 

分 类 号：TE122.2[石油与天然气工程—油气勘探]