This paper presents the results of the implementation of several remedial actions to reduce the sucker rod pumped well failure frequency, during the 2006-2008 period in La Concepcion field, Western Venezuela. Before 2006, the presence of a pulling rig to put wells back into production was a constant.

Wells failed continuously caused by rod wear, sand production, paraffin deposition and also subsurface pump valves wear, resulting in a failure frequency of 0.810 failure/well-yr.

Sucker rod pumped wells have been produced from the shallow Eocene reservoir since 1924. The current average production rate is 30 BFPD per well and a low productivity index (around 0.09 BFPD/psi).

Continuous rod system was implemented to reduce failures related to rod wear. Other actions were artificial lift method change to plunger lift and chemical treatment improvement to control paraffin deposition. Furthermore, custom-made changes in pump materials components and accessories were necessary to control the consequences of sand production.

At the end, these changes have enabled Petrowayuu to reduce the Eocene reservoir wells failure rate from 0.810 failure/well-year to 0.361 failure/well-year, which represents a 55% failure reduction and savings of more than 1,700,000 USD/yr.

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