Upstream Online: Taking cover

With electrical submersible pump (ESP) systems failing more often than operators liked in unconventional wells, much research and development has aimed to make ESPs that last longer. That requires addressing the basic fact that the pumps are deployed in conditions that are constantly evolving. “Unconventional wells are dynamic. They change. They can change daily,” as Nathan Holland, product line director for artificial lift at Baker Hughes, puts it. Challenges range from installing ESPs in highly deviated wells without damaging them, to dealing with a steep production decline, to coping with gas slugs and the changing production mix that might call for several different ESP systems over the course of a year for a single well. Click the link below to read the full article.



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