含灰质低孔低渗储层微裂缝测井识别技术研究

研究区域内储层埋藏深、压实强烈,属于典型的低孔低渗储层。岩心观察表明储层发育微裂缝,改善了储层的渗流条件,因此研究区域内裂缝识别是储层评价的关键因素。文中根据研究区域内常规测井电性响应特征与微裂缝发育程度之间的响应关系,建立了利用常规测井资料识别裂缝和半定量计算裂缝密度的方法,应用表明在研究区域内该方法具有较好的应用效果。

Micro-fracture Logging Recognition Technique Used in Limy and Low Permeability Reservoirs

In the studied area, the reservoirs, which buried deeply with strong compactness, belong to typical low porosity and low permeability reservoirs. Core observation shows that micro-fracture are developed, by which its percolation condition is improved. The fracture recognition in the studied area is the key factor for reservoir evaluation. Based on relations between electric response characters of conventional logging and extent of fracture growth, methods are established for fracture recognition and semi-quantization of fracture density. Application shows that the method is effective in the studied area.