异常高压低渗透地层测试技术的改进

针对异常高压低渗透地层在测试关井恢复过程中出现关井压力外泄的情况，对测试管柱进行了改进，即在P—T封隔器上方组装一个水力锚，水力锚上方组配一个裸眼旁通阀，封隔器和水力锚之间加1—2根油管，并适当增大关井时的加压负荷，较好的解决了关井压力外泄问题，提高了测试一次成功率。

The Development of Well Test Technology for Abnormal High Pressure and Low Permeability Zone

To the actual problems of the leakage of pressure during the build up period for the test of for abnormal high pressure and low permeability zone, the paper makes a progress in the design of testing strings, which is equipped with hydraulic anchore up the P-T packer in the testing strings and combined a bore-hole by-pass valve up the hydraulic anchore and put one or two tubes between the packer and anchors, so as to solve the problem of pressure percolation during the build up period and raise the successful rate at one time.