Maracaibo Lake wells are currently producing approximately 800 mstbd of crude oil from some 7000 wells. 90% of these well are in gas lift and approximately 760 wells are being lifted intermittently. Natural reservoir decline will increase the number of wells that will require intermittent lift at an estimated rate of 150 wells per year.

Continuous research and modeling efforts have been performed over the last thirty years to understand the dominant physical characteristics and develop mechanistic computational tools for the design of the various existing intermittent lift schemes (conventional, plunger assisted, chamber lift). The present paper will review relevent published work regarding intermittent lift and describe key modeling considerations for each scheme.

Furthermore, we will focus on proper selection of intermittent lift scheme as a function productivity index, reservoir pressure, wellbore equipment and completion and other inportant well parameters.

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