With the main objective of reducing working times of rig equipments and this way costs for operator companies an insertable Progress Cavity Pump (PCP) has been developed. This pump is designed to be anchored in the top (by cups) and with a 2 7/8?? anchor in the bottom section.
This kind of pumps can be installed in wells where beam pumped systems were installed before, and vice versa, avoiding the production string pulling. So if a change from a beam pumped system to PCP system is required, utilizing this new design, the rig activity would be limited to: pulling rod string, changing the pump and installing the string again. If a fast mounting rig is used to realize the replacement, the working time could be shorter.
Other advantage of insertable PCP is that the production flow rates has been increased, obtaining a several range of applications.
This paper presents a short technical description of and some tests of insertable PC Pumps in different wells of Guadales and Lomas Del Cuy oilfields (Area Guadal - Las Heras - Repsol YPF). Theses pumps were tried at different depths, stresses, hydraulic powers and other well conditions in order to demonstrate the same performance of traditional PC Pumps.
An economical analysis exhibits the convenience and some qualitative benefits of installing insertable PC Pumps in a certain range of wells, depending on their flow rates, especially when a beam pumped system will be replaced for a PC Pumped system. Besides it provides a future projection of insertable PC Pumps installations in the mentioned oilfields.
EL GUADAL oilfield is located in Santa Cruz north Argentina area. Its well production is poor so we are forced to make continous analysis in order to reduce costs.
Nowadays, the extraction costs are high so the possibility of changing the elevation system without moving the tubing was analysed. This would allow a lower cost by intervention and a more optimised production due to more well servicings throughout the year.
This document deals with the main economic and technical aspects of the change of the elevation system from mechanic pumping into progressive pumping which decreases the well maneuvre costs in EL Guadal oilfield, Las Heras-Santa Cruz-Argentina.
The introduction of a Flush By equipment would also be helpful because it does not require tubing movement.