The test will be affected by complex nature of downhole and testing instruments.
测试要受井下情况的复杂性和测试仪器的影响。
It will cost more, take long time and less effective by use of testing on site to develop and study downhole tool.
采用现场试验的方法研究井下工具费用高、时间长、效果差。
During the completion well testing period of the vertical well section of Ku 1, we tested 2 times and the downhole packer was all imbedded, result in very serious downhole accident.
库1井直井段在完井测试期间， 2次测试井下封隔器均被埋死，造成非常严重的井下事故。
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