大庆石油地质与开发2017，Vol.36Issue(4)：147-152,6.DOI:10.19597/J.ISSN.1000-3754.201610054
鄂尔多斯盆地镇北地区延长组长7致密油储层特征及其综合评价
CHARACTERISTICS AND COMPREHENSIVE EVALUATION OF CHANG-7 TIGHT OIL RESERVOIRS IN ZHENBEI YANCHANG FORMATION OF ORDOS BASIN
摘要
Abstract
In order to define the characteristics of Chang-7 Formation tight oil reservoirs,the comprehensive evaluation of the reservoirs were carried out.Firstly,with the help of the core observation,thin section identification,core analysis,etc.,the following conclusions were drawn:the reservoir attribute parameters such as physical properties,oiliness and brittle abilities and so on possess the following characteristics:wider distribution frequency band and faster change.Secondly,based on the cluster analyzing method,7 relatively independent parameters are selected to classify and evaluate the reservoirs and determine the grading criteria of the corresponding parameters.On the basis of the above,the grey system theory was applied to quantify the weight coefficients of each evaluating parameter and calculate the comprehensive evaluation factors of the reservoirs,and furthermore the quantitative evaluation was performed for Chang-721 tight oil reservoirs in Well Block Xi233 of Zhenbei area.The achievements show that Type Ⅱ and Ⅲ reservoirs are dominant in the block,the distribution areas of the both are about 56％,Type Ⅰ and Ⅱ reservoirs are mainly distributed in the underwater distributary channels of the delta front,and Type Ⅲ and Ⅳ reservoirs are generally distributed in the wings of the channel sandbodies.关键词
鄂尔多斯盆地/镇北地区/储层特征/灰色系统/储层综合评价/长7致密油Key words
Ordos Basin/Zhenbei area/reservoir characteristic/grey system/reservoir comprehensive evaluation/Chang-7 tight oil分类
能源科技引用本文复制引用
孙兵,刘立峰,丁江辉..鄂尔多斯盆地镇北地区延长组长7致密油储层特征及其综合评价[J].大庆石油地质与开发,2017,36(4):147-152,6.基金项目
国家科技重大专项“致密油开发目标评价优选”(2016ZX05046003-001-002). （2016ZX05046003-001-002）
