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用P T封隔器测试高压低渗透层易发生渗漏 ,取不到完整的地层资料。经对P T封隔器进行井下受力分析 ,找出了封隔器发生渗漏的原因 ;给出了确定发生渗漏时最高关井压力的计算公式并验证了其正确性 ;提出了解决P T封隔器渗漏问题的相关措施。
With P T packer test high pressure and low permeability layer prone to leakage, can not get the complete formation information. After analyzing the downhole force of PT packer to find out the cause of the packer leakage, the formula to calculate the maximum shut-in pressure in case of seepage is given and the correctness is verified. Related measures of packer leakage.