摘要
W油藏Z1油组为高孔低渗低阻油藏,低阻油层的地质成因复杂多样。依据Z1油组储层发育特征,研究了储层粘土矿物的类型、颗粒的分布形式和泥质含量,以及上述粘土矿物特征对Z1油组低阻的影响。研究发现,Z1油组低阻层段的粘土类型以伊蒙混层为主,其相对含量高;粘土颗粒较均匀地成薄膜状、絮状分布;平均泥质含量高。粘土矿物组构产生的附加导电性和高泥质含量是影响Z1油组低电阻率的重要因素之一。
The reservoir of Z1 oil group in W Oilfield has low resistance,high-porosity and low permeability.The geological formation of low resistivity reservoir has many reasons.In view of the developing features of Z oil group,the clay minerals types,clay particles distribution,clay content and the influence of them on the low-resistivity are studied.It can be found that the clay types in low resistivity layer segment of Z1 oil group is mainly the mixed layer of illite and montomorillonite and the content is relatively high.The clay particles are evenly distributed in a thin film and in flocculating form with high average clay content.Additional conductivity caused by clay minerals and high clay content are the main factors affecting the low resistivity of Z1 oil group.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第5期70-74,共5页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中海油国家重大科技专项(2008ZX05030-002)
四川省重点学科“矿产普查与勘探”建设项目(SZD0414)
关键词
低电阻率油层
粘土矿物
附加导电性
泥质含量
低阻成因
low-resistivity reservoir
clay minerals
additional conductivity
clay content
genesis of low resistivity
