摘要
安塞油田坪北区属于低渗透砂岩油藏.通过野外露头观察,岩心描述、古地磁测定、岩石力学实验,微地震波监测,三维水力裂缝模拟和地应力分析方法对储层的天然裂缝几何形状、裂缝性质、裂缝发育程度和分布规律,以及人工裂缝的控制和监测等研究表明,其储层天然裂缝主要有4组,其方位角分别为43.5°、320°、90.4°、2.5°,主要集中在43.5°和320°.而人工裂缝主要方位角为北东70°～80°.生产动态特性主要表现为储层具有双重孔隙介质特征.钻在裂缝发育带的调整井,获得良好开发效果.
Pingbei Area of Ansai Oilfield belongs to low permeability sandstone reservoir. Field outcrop observation,core description,palaeo-geomagnetic determine,rock mechanics experiment,micro-seismic wave inspection,three dimensional hydraulic fracture simulation,and crustal stress analysis methods have been used to investigate the natural fracture geometry,fracture property,fracture development degree and distribution laws,and study the control and inspection of hydraulic fractures. The results have shown that these reservoir natural fractures are mainly included four groups,their orientation angles are 43.532090.4and 2.5respectively,and mainly centralized in 43.5and 320;while the main orientation angles of hydraulic fracture are in NE7080;the production behaviors are mainly shown that the reservoir possesses dual porosity medium characteristics. Some adjustment wells,which were drilling in fracture development belts,have gained good effects.
出处
《江汉石油职工大学学报》
2005年第4期6-7,共2页
Journal of Jianghan Petroleum University of Staff and Workers
关键词
安塞油田坪北区
裂缝描述
开发特征
低渗透砂岩储层
<Keyword>Pingbei Area of Ansai Oilfield
fracture description
development characteristics
low-permeability sandstone reservoirs
