摘要
油田开发生产过程都会引起储层伤害,因此,油层保护已成为提高油气产量和采收率的关键。正理庄油田沙四段油藏属于典型的滨浅湖相的滩坝砂岩沉积,其储层类型较为特殊,对储层物性影响较大的主要是碎屑岩中的粘土矿物。研究了储层中各种类型粘土矿物的含量与变化规律,确定了粘土矿物的成因及其微观特征对储层物性的影响。通过分析研究区粘土矿物的地质影响因素,结合油藏的成藏过程,确定了油藏的基本特征以及粘土矿物与油气之间的关系,正理庄油田樊131区块滩坝砂储层伤害的主要因素是速敏,其次是水敏,而酸敏程度较低。
Almost all measures implemented in the production will cause formation damage in the development process. Therefore, the reservoir protection is the key for enhancing oil recovery and oil production rate. The deposition of the oil reservoirs of Es4 in Zhenglizhuang Oilfield is the typical shoal-bar sandstones with shore lake facies. The reservoir type is special and the main damaging factor on reservoir physical property is the clay mineral in clastic rocks. The content and variation rule of each type of the clay minerals in the reservoir are researched. Origin of the clay minerals and the influence of their microscopic features on physical property are determined. Based on the analysis of oil reservoir forming course and geologic influencing factors of the clay minerals in the studied area, the relation among basic features of oil reservoir, clay mineral and oil-gas is also determined. The main factor causes formation damage is velocity sensitivity, secondly the water sensitivity, and the acid sensitivity is minimal.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2007年第5期12-15,共4页
Petroleum Geology and Recovery Efficiency
基金
国家自然科学基金项目"柴达木盆地西部叠层石纹层的成因与地球化学研究"(40503003)的部分研究成果
关键词
碎屑岩
粘土矿物
储层敏感性
储层伤害
沙四段
正理庄油田
Es4,clastic rock,clay mineral,formation sensitivity, formation damage, Zhenglizhuang Oilfield
