摘要
测井资料中的声波时差可反映岩石的抗压强度 ,声波时差越小 ,岩石抗压强度越高。在室内对辽河和冀东油田的砂岩标准岩样进行了抗压强度实验 ,建立了各种围压下岩心抗压强度与声波时差的回归关系。结果表明 ,无论是在常压还是在围压下 ,砂岩强度与声波时差均呈负指数关系。利用该关系式建立了出砂判别模式和井壁稳定性分析模式 ,在实践中取得了较高的符合率。
The relation between sandstone strength and interval transit time in well log information is distinct. The experiments on sandstone strength of core examples from Liaohe and Jidong oilfields are carried out. The regressive relation formula between interval transit time and sandstone strength is established under confining pressure,testing compression strength of sandstone. The relation formula is used to develop the sand production test model and wall stability analytical model. Application shows that calculated result has a high consistence with the practical result.
出处
《石油大学学报（自然科学版）》
CSCD
北大核心
2001年第4期37-38,共2页
Journal of the University of Petroleum,China(Edition of Natural Science)
