摘要
砂岩地层裂缝的产生主要是岩石的脆性成分较多、岩石颗粒及孔隙率较小、岩性较为致密所致。本文详细描述了裂缝性砂岩常规测井响应特征,并结合油田实际,提出了微球形聚焦电阻率变化、深侧向与微球形聚焦电阻率差值等砂岩裂缝的常规测井资料加强显示方法和依据常规测并资料进行BP神经网络裂缝综合识别方法。实际资料处理表明,综合利用这些方法可明显改善砂岩裂缝的有效识别。
The emergence of fractures in sandstone mainly resulted from more rigid component in sandstone, small rock grain and porosity and more dense lithology. The paper described in detail the response of regular logging data to fractured sandstone , presented enhancing displaying methods for regular logging data such as micro-spherical focusing impedance variation and deep lateral and micro-spherical focusing impedance difference and integrated identifying fracture by BP neural networks for regular logging data. The practical data processing showed that integrative use of these methods can greatly improve the identification of fractures in sandstone.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2003年第4期425-430,共6页
Oil Geophysical Prospecting
