jdowns

formate brine cesium formate hpht formate brines gas wells lejog land's end to john o'groats penzance land's end hiking walk long-term production gas reserves recoverable reserves oil production gas production condensate hpht wells potassium formate hpht gas deep wells safety drilling deep gas cesium kick control hse reservoir drilling offshore well control completion fluid formation damage phosphate brine reservoir sandstone permeability