Extensive data are reported to show the correlation between bottom hole pH and tubing life under various production conditions. Data are given to show the following relationships: tubing life to calculated bottom hole pH for flowing gas lift sweet oil wells; tubing life to calculated bottom hole pH for gas lift sweet oil wells; produced iron and bottom hole pH for flowing, gas lift and pumping sweet oil wells, and tubing life and produced iron in gas lift sweet oil wells. Total and average water production also are indicated for certain wells. 8.4.3

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