塔河地区碳酸盐岩裂缝型储层的测井评价技术

Well-logging evaluate technology for fractured carbonate reservoirs in Tahe area

(1.中国石油化工股份有限公司石油勘探开发研究院,北京100083;2.中国石油大学(北京),北京102249)

Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 100083,China

在对塔河地区奥陶系各类裂缝在常规测井曲线和成像测井曲线上的不同响应特征及响应机理分析的基础上,综合利用岩心、阵列声波记录中斯通利波的能量衰减、成像测井图像和双侧向电阻率识别裂缝发育段,并利用声波时差和补偿中子交会分析方法判别裂缝型储层中的流体类型,经塔河地区实际井资料验证,该方法能够有效识别裂缝型储层中的油气层,在塔河地区取得了较好的应用效果。

Based on the analysis of response characteristics and mechanisms of all fractures on conventional log and imaging log in Tahe area,the fractures were recognized by comprehensively using core data,energy attenuation of Stoneley wave,imaging log and dual laterolog resistivity. Furthermore,AC-CNL cross-plot method was applied to discriminate the fluid type in the fractured reservoir. The application on actual data in Tahe area shows that the method can effectively recognize oil & gas layers in fractured reservoirs,good results have been achieved in the area.