Dezhou Jingmei Petroleum Machinery Co. Ltd.
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1. The standpipe pressure gauge indicator shows a sudden increase
2. The standpipe pressure gauge indicator increases; however, it is not the normal pressure drop that grows with the drilling depth
3. The pressure gauge indicator decreases slowly
4. There is not footage
For specific solutions, please refer to the “PDM drill failure analysis and troubleshooting table”.
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