The trend for SAGD in Canada is towards low pressure steam injection. The primary reasons for this trend are both economical and operational in that low pressure translates to lower operating costs and improved recoveries.1 Low pressure SAGD also requires an artificial lift system (ALS) in order to achieve desired production rates.
This paper will discuss a unique ALS that was specifically developed for the lifting challenges associated with low pressure SAGD - the Hydraulic Gas Pump (HGP). This rodless technology utilizes high pressure gas to positively displace production fluid. At the time of the writing of this abstract, the HGP had passed rigorous lab testing and surpassed all performance expectations in a test well. Furthermore, it is currently being field-tested in a SAGD well in Canada. The paper concludes with the actual HGP field-test performance results from that well.