4 of 4 codes

Code Means Normalised Valid
1 Flowed Flowing under its own pressure. Flowed always
2 Lifted On artificial lift. Lifted always
3 Pumped On a pump. Pumped always
4 Jetted Jetted. Jetted always

Where this mapping came from: OilGasDataProcessing process_completions.processW2, inline prodMethod map (W-2 field 6)