Paper: EXTENSION OF TYPICAL CASING PLUNGER TECHNOLOGY TO 5 INCH CASING WITH NONUNIFORM CASING WEIGHT STRINGS IN TEXAS AND OKLAHOMA PANHANDLE GAS WELLS

Recent developments of casing plunger technology have provided reliable tools that successfully remove well-bore fluids and reduce liquid loading in marginal or stripper gas wells producing in 4 _ inch casing strings of nonuniform casing weight. These advances are the result of better selections of elastomeric compounds suitable for variations in the casing inside diameter that occur with non-uniform casing weight strings in deeper wells. Significant advances in the mechanical design permit more efficient sealing of the elastomeric sealing cups with the
casing inside diameter variations encountered in non-uniform strings. The specific difficulty presented by 5 _ inch casing is the much larger variations in casing inside diameter that exist in common casing weights used in deeper wells. The status of field tests and current results will be presented as part of the ongoing development of casing plungers in broader applications