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File:Production-problems fig4.png Examples of mechanical failure.(950 × 679 (23 KB)) - 17:29, 14 January 2014File:Drill-stem-testing fig8.png Bottom packer failure. Blanked off gauge below bottom packer on a straddle test. When the bottom(755 × 573 (6 KB)) - 22:25, 14 January 2014