Production of Deep Dually Completed Wells with Tandem Rod Pumps

Production of dually completed oil wells by various methods of artificial lift has presented ever increasing problems for the past several years. Realizing the conditions to be met and approaching them through correct design of equipment is of primary importance. The most prominent of the problems are well depths, application of surface and subsurface equipment, casing sizes and clearances in the case of parallel tubing strings. This paper deals with these and other eventualities as approached from a standpoint of tandem rod pumping.