摘要
通过铸体薄片、X线衍射、扫描电镜、常规压汞和室内敏感性实验等分析测试手段,对英旺油田长8砂岩储层的物性、微观孔隙结构及储层敏感性等特征进行详细研究。结果表明:该区长8砂岩储层属于低孔、超低渗储层,孔隙以粒间溶孔、剩余粒间孔和粒内溶孔为主,属小孔、微喉道类型,孔喉分选性一般,连通性差;长8储层敏感性以弱伤害程度为主,具有弱—无速敏、弱酸敏、弱碱敏、中等偏弱的盐敏和水敏等特点。该研究为英旺油田下一步的油气开采提供了理论依据。
The physical property, microscopic pore structure and sensitivity haraeteristies of Chang 8 samlslone reserwir in Yingwang Oilfiehl of Ordos Basin was delailedlv studied based on the casting thin sections. X-ray diffraction, SEM. conventional tlg injetion and indoor sensitivity test techniques. The results show that Chang 8 samlstone reservoir belongs to low porosity and ultra- low Iermeahility reservoir in Yingwang Oilfiehl. The pore types mainly include iotergranular dissolved pore, residual intergranular pore and intragranalar dissolved pore. Small pore aml micro throat are the main pore throal characteristics, whith have general sorting aml poor communication. Chang 8 reservoir possesses such characteristics as weak-no velot,ity sensitivity, weak acid sensitivity, weak alkali sensitivity, low-medium salinity sensibility and water sensitivity. The study provides a theoretical basis for further oil and gas recovery in Yingwang Oilfield.
出处
《断块油气田》
CAS
2014年第2期161-164,共4页
Fault-Block Oil & Gas Field
基金
国家重点基础研究发展计划(973计划)项目"盆地系统内外地质动力相互作用与多种能源矿产形成的耦合关系"(2003CB214601)
关键词
敏感性
物性
微观孔隙结构
长8砂岩储层
英旺油田
sensitivity
physical property
mirero-pore structure
Chang 8 sandstone reservoir
Yingwang Oilfieht
