Gas Lift in Multiple Completed Wells

This paper presents a history of intermittent gas lift production practices in multiple completed wells in the TXL Field in Ector County, Texas, and the South Andrews Field in Andrews County, Texas. These two fields contain most of Shell Oil Company's gas lift installations in the Permian Basin. Attention is given to individual installation designs in an attempt to evaluate their merit or demerit for particular well conditions. The purpose of this paper is to show the approach to multiple gas lift operation in these two areas progressively over an approximate ten-year span with particular emphasis given to improvements based on experience with an evaluation of prior installations.