Paper: Selection of Equipment for Multiple Completion Rod Pumping Wells

There have been many papers presented and many discussions about producing multiple completion wells. In fact, two papers were presented last year at the 5th Annual Short Course. We do not intend to cover the entire field of pumping multiple completion wells but must, of necessity, review some of the past history and accomplishments in this field. Dually completed wells first came into being during the early 1940s for two reasons: 1) shortage of steel (tubular goods) 2) Increased demand and price of oil. Dual completions of that day served their purpose and they also disclosed many complex problems to their operators. At that time, there were no specialized tools and practices for dual completions. The early tools were modifications of accepted tools and practices for standard single completions. Cementing techniques, while acceptable for single completions, were found to be unsatisfactory for duals as they allowed the producing pays to commingle. Imperfect packer seals were another common cause of failure.