地质与资源2017，Vol.26Issue(6)：577-582,595,7.
鄂尔多斯盆地坪北地区延长组长8、长9油层沉积特征研究
STUDY ON THE SEDIMENTARY CHARACTERISTICS OF THE OIL-BEARING LAYERS C-8 AND C-9 OF YANCHANG FORMATION IN PINGBEI AREA, ORDOS BASIN
董丽红 1李欣伟 1杜彦军 1时晓章 1马浪1
作者信息
- 1. 陕西延长石油(集团)研究院,陕西西安710065
- 折叠
摘要
Abstract
Good oil and gas shows are discovered in the exploration of oil-bearing layers C-8 and C-9 in Yanchang Formation,Pingbei area.Combining the data of well logging,geological logging,drill core and chemical analysis,a comprehensive study is conducted on the petrological,paleontological and geophysical characteristics of C-8 and C-9.The results show that the lacustrine-delta depositional systems,mainly delta front facies and shore-shallow lacustrine or prodelta sedimentary facies,are developed in the Pingbei area during the sedimentary period of C-8 and C-9,which can be subdivided into underwater distributary channel,underwater distributary interchannel,distant sandbar,shoreshallow lacustrine mudstone and prodelta mudstone microfacies.Among the facies above,the sand body of underwater distributary channel is relatively developed,serving as the main oil-gas accumulation place.关键词
鄂尔多斯盆地/坪北地区/延长组/水下分流河道/致密砂岩Key words
Ordos Basin/Pingbei area/Yanchang Formation/underwater distributary channel/tight sandstone分类
天文与地球科学引用本文复制引用
董丽红,李欣伟,杜彦军,时晓章,马浪..鄂尔多斯盆地坪北地区延长组长8、长9油层沉积特征研究[J].地质与资源,2017,26(6):577-582,595,7.
