Patent ID: 7748448
Filing Date: 2010-07-06
Classification: E21B

Abstract:
1. An oil and gas well production unit for the retrieval of oil and gas from a diminishing production field, comprising: a well casing within said production field attached to a lubricator assembly; an electromagnetic or audible signal generating plunger arranged for reciprocable travel within a tubing in said casing, said lubricator being arranged to assist in the production of oil and gas removal from said oil and gas well production unit; a plunger examination port arranged within said lubricator assembly to permit determination of the amount of wear of said plunger without having to remove said plunger from said lubricator assembly, said plunger examination port comprises an optically transmissive window to permit visual inspection of a plunger received thereadjacent, and a sensor arranged with the assembly, to receive the audible and/or electromagnetic signals from the signal generating plunger.