摘要
鄂尔多斯盆地姬塬油田铁边城地区三叠系延长组长4+5、长6区块属于典型的陆源碎屑沉积的低渗—特低渗透致密砂岩储层,受后期强烈的成岩作用改造,是盆地内建产重要地区之一。通过岩心观察、扫描电镜观察、砂岩薄片鉴定、高压压汞分析,以及核磁共振测试等多种技术手段,还结合钻井、测井、录井、试油试采及储层特征等资料,在通过与全区横向对比的基础上,综合分析了该区块低阻油层的特征及影响因素。
Triassic Yanchang Chang4+5 and Chang 6 blocks in Tiebiancheng area of Jiyuan oilfield, Ordos Basin belong to typical low-permeability ultra-low-permeability tight sandstone reservoirs deposited by terrigenous clasts. They are transformed by strong diagenesis in the later stage. They are one of the important areas for internal production in the basin. This study comprehensively analyzes the characteristics and influencing factors of low resistivity reservoir in this block on the basis of horizontal comparison with the whole area through various technical means such as core observation, scanning electron microscope observation, sandstone thin section identification, high-pressure mercury injection analysis and nuclear magnetic resonance test, as well as drilling, logging, oil test and production test and reservoir characteristics.
作者
兰书琪
麻宇杰
赵军辉
赵振兴
狄晓磊
徐占军
Lan Shuqi;Ma Yujie;Zhao Junhui;Zhao Zhenxing;Di Xiaolei;Xu Zhanjun(State Key Laboratory of Continental Dynamics/Department of Geology,Northwest University,Xi an 710069,China;No.8 Oil Production Plant,PetroChina Changqing Oilfield Company,CNPC,Xi an 710021,China)
出处
《云南化工》
CAS
2022年第3期87-91,137,共6页
Yunnan Chemical Technology
关键词
铁边城地区
长6
致密砂岩
低阻油层
Tiebiancheng area
Chang 6
tight sandstone
low resistivity reservoir
