摘要
在以前工作的基础上,对套管损坏区浸水域的形状和大小提出一种估算方法。同时根据地应力情况,对穿过浸水域的套管所承受的岩层位移性载荷进行了分析,以该区套管损坏历史和岩层位移性载荷发展的对应关系为依据,结合开发计划,预测未来一段时期内该区可能发生套管损坏的井数。实际使用效果表明,以这种理论和油田大量开发动态资料为基础所建立起来的预测方法,具有良好的准确性,对防止套管损坏工作有重要作用。
A rough esti mation for dimensions of water in vaded region in soft shaleformation is proposed by analysing the performance history of concerned oilfield.Accordingto variation of rock stress at water in vaded region, the relative displacement of top surfaceand the below surface of rock formation can be determined approximatelly。ThiS relativedisplacement is just the rock displacement load to the damaged casings。A prediction mehtodfor casing damage wells is developed on the basis of investigation on the relation betweencasing damage and rock displacement.The method is used for several casing damage rcgions。The prodiction results are in good agreement with practiceal situation。
出处
《石油大学学报(自然科学版)》
CSCD
1994年第1期50-55,共6页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
注水
油田注水
套管
损坏
ater injection:Oilfield development:Casing damage:Informationstress :Prediction