QRod™, a Practical Beam Pumping Design Program

James W. Jennings

Presented at the 1994 Southwestern Petroleum Short Course.

The QRod paper describes a user-friendly software program used for the design and predicted performance of Sucker Rod Beam Pumping Installations. QRod’s objective is to help the designer implement state of the art beam pumping design technology without getting buried with details. The program uses a rapid solution method to the damped wave equation to predict the surface dynamometer loads and polished rod position; the effect of changing a parameter such as tubing anchor, stroke length, stroke rate, and pump diameter can be immediately evaluated. The output of the program includes pump size, rod string, surface unit size, and motor size for an input depth and production rate. The size of the pumping unit required is determined from correlations for the motion of conventional, Mark, Reverse Mark or air balanced units. Tapered rod strings (API taper) and Fiberglass/Steel combination strings are allowed. The QRod software can be downloaded free of charge from the Echometer Software web page.

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