测井资料在海上油气田出砂预测中的应用  

Application of Logging Data in Predicting Sand Production in Offshore Oilfields

作　　者：李凯军[1] 乔悦东[1] 田洪[1] 

机构地区：[1]中海油田服务股份有限公司油田技术事业部,北京101149

出　　处：《江汉石油学院学报》2004年第4期85-87,共3页Journal of Jianghan Petroleum Institute

摘　　要：在砂泥岩地层油气井的测试开采过程中 ,往往由于地层过于疏松 ,或测试压差大于地层所能承受的压差 ,而导致地层出砂严重 ,防砂管被砂充填、堵死 ,甚至测试层段被沉砂掩埋。为了准确确定出砂层位 ,定量计算各油气层不出砂的最大安全生产压差 ,运用阵列声波、密度等测井资料 ,根据比奥特(Biot)多孔弹性理论及莫尔库仑破裂准则 ,计算了井眼周围及射孔孔眼周围的地应力分布 ,导出了其发生剪切破裂的条件及相应的最大安全生产压差计算公式 。In the process of prediction and production of oil and gas wells in sand-shale stone strata, often because formation is too loose or tested pressure differential is higher than the one that formation can support, serious sand production is caused, thus the sand control liner is packed and blocked by sand or even the test formation is buried by settled sand. In order to accurately determine the horizon of sand production, the maximum and safety of non-sand production pressure differential is quantitatively calculated, based on Biot porous elastic theory and Mohr-Coulomb's criterion of fracture, the logging data of array sonic logging and density logging are used to calculate the in-situ stress distribution around wellbore and perforation, the conditions inducing shear fracture and the calculating formulae for related maximum and safety production pressure differential are derived, which are successfully used for sand production prediction in offshore oilfields.

关 键 词：声波测井 出砂预测 最大安全生产压差 海上油气田 

分 类 号：P631.84[天文地球—地质矿产勘探]