This article is a synopsis of paper SPE 46220, "Increasing Heavy-Oil Production Utilizing Dual-String New Technology," by B.L. Evans, SPE, B.L. Evans & Assocs. Inc., and G.M. Muth, SPE, Muth Pump LLC,originally presented at the 1998 SPE Western Regional Meeting, Bakersfield, California 10-13 May.

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