Gas well equipment

Claim 1

In a purge pipeline for a natural gas productive formation containing natural gas and incidental water both pressurized in a well wherein a casing encloses said pipeline and said pipeline communicates with said pressurized water in said natural gas productive formation and said casing communicates with said natural gas productive formation and contains natural gas under pressure from said formation, the improvement which includes said purge pipeline having in the wall thereof at each of a plurality of locations spaced apart from one another longitudinally of said pipeline a pair of first and second localized wall portions opposing one another across the interior of said pipeline, said localized wall portions being relatively erosion resistant as compared with adjacent regions of said pipeline, and said first localized wall portions having apertures therein directed into the interior of said pipeline laterally of said pipeline toward said second localized wall portions in said pairs for natural gas supplied under pressure from a water-containing natural gas productive formation and entering said apertures from outside said pipeline to produce jets impinging upon said second localized wall portions within said pipeline and have the gas delivered in said jets promote flow of water through said pipeline from said natural gas productive formation.