白狼城地区长2储层四性关系及有效厚度下限研究

为提高目的层段油藏测井解释和有利区域预测的精度,利用砂岩薄片、铸体薄片和扫描电镜等技术手段并结合测井资料对白狼城地区长2储层的"四性"关系进行研究,认为长2储层属于典型的中孔低渗油层:储层岩性主要为中-细粒长石砂岩,成分和结构成熟度均中等;储集空间以粒间孔和溶蚀孔为主;岩性、物性的差异控制了储层油藏的富集程度,并确定了...

Study on Chang 2 reservoir four property relations and effective thickness lower limit in Bailangcheng area

In order to enhance the target interval oil de posit well logging interpretation and the advantageous region forecast precision, using technological means of sandstone thin slice, body of casting thin slice and scanning electron microscope, combined with the log information to study Chang 2 reservoirs four property relations in Bailangcheng area, we thought that the Chang 2 reservoirs is typical mid dle pore low permeable oil layer. The reservoir lithological characteristics are moderate-fine grain arkosic sandstone,the ingredient and the structure maturity is medium. Reservoir space is mainly intergranular hole and corrosion hole;The lithological character, the physical property differencecontrolled the oil reservoir accumulation degree, and has determined the reservoir natural lower limit standard: The porosity is 8%, the penetration coefficient is 0.43×10-3 μm2,the electrical lower limit electronic resistivity is 13 Ω· m,interval transit-time is 231 μs/m.