Development and Analysis of Mathematical Plunger Lift Models of the Low-Permeability Sulige Gas Field

The Sulige is a low-permeability tight gas sandstone field whose natural production has gradually declined with continuous development. primary reason was that most of the wells in flew below their critical rates and liquids started to accumulate wellbore at different levels, which resulted reduction due pressure decrease back increase on produced gas. An artificial lift required remove from those wells. With advantages such as simple installation operation, low cost high liquid-carrying capacity, plunger been proven effective Gas Field. In this paper, firstly, series mathematical models were developed investigate displacement velocity uplink downside phases, fluid leakage phase, characteristics tubing casing build-up phases. Then, taking well X1 X2 Su 59 area an example, established applied estimate its pressure, moving speed, during lift. Hence, cycle operated by maximum rate optimized. This study provides theoretical basis for optimal design parameters improvement production.