MODELING OF THE PROCESSES ASSOCIATED WITH THE OIL EXTRACTION SYSTEM THROUGH DEPTH PUMPING

Aims: A method for predicting the behavior of the crude oil extraction system by deep pumping is presented. Predicting the behavior of the rod pumping system requires solutions obtained through differential equations to which a whole set of boundary conditions is applied. For pumping rod assemblies, the vibrating string equation and boundary conditions describing initial rod assembly pressure and velocity, polished rod motion, and pump operating conditions are used. Methodology: The classical pumping system is described by a fairly flexible mathematical model based on numerically solved differential equations. Surface dynamogram and bottom (pump) dynamogram plus intermediate dynamograms can be determined for a wide range of bottom and surface conditions. This technique that will be presented allows the simulation of vast operating conditions, and the data obtained through these methods are useful in the design and use of rod pumping systems.