Abstract

Inefficient production of wells with multiple open formations to one wellbore is usually caused by liquid loading, liquid blockage between formations, interference, and crossflow. There are numerous ways that have been tried to flow all the formations efficiently but usually, at the end, the techniques used either give more opportunity to one formation (e.g.: new recompletions) and give up on other formation/s production (e.g.: older, more depleted formations, lowest formation in the wellbore). After long study, testing, and analysis of results we have developed the “Natural Gas Lift” method that can effectively produce all zones with a single string of tubing, keep all selected zones isolated, able to use existing artificial lift equipment like plungers/surfactants through the whole string of tubing to assist in deliquification, and at the same time produce all the formations in the wellbore more efficiently and economically.

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