Abstract
Completion string is a critical component of the well production system and it must be efficiently designed, installed and maintained. Each production system for artificially pumped wells, have different requirements. Downhole pumps are a common means of boosting the productivity of a well by lowering the buttonmhole pressure. Rather than lowering pressure gradient in the tubing to reduce the bottomhole pressure as in gas lift.
Two types of pumps are used: positive-displacement pumps, which include sucker rod pumps and dynamic displacement pumps, which include electrical submersible pumps. With the improvement in the sucker rod pumping system capabilities in producing tough conditions wells (deep, sandy, gassy, deviated and horizontal wells), selecting the right completion components became extremely necessary to extend run life and reduce operating costs for this type of artificially lifted well.
In a standard rod pumping completion, the tubing and the pump seating nipple are the essential parts in the completion string. But for moderate and deeper wells, a tubing anchor catcher (TAC) became the third important part for successful artificial lift well operations. In case of tough well, selections of the right subsurface completion components are necessary to extend the life and reduce operating costs of the well hardware. Each case may require especial design and running tools selection.
Searching in different literatures showed that there is no adequate information about beam pumping wells completions. This paper addresses the analysis of the current well completions conditions and associated problems and then it will present practical completion solutions for normal and difficult well conditions. This paper will also present case studies from different countries.
