Stay Connected  Portable VSDs, load cells aid rod pumping at
Duri  A pilot project on a portable variable-speed-drive and
load cell for obtaining counterbalance effect (CBE) data in the
Duri steamflood improved the sucker-rod pumping efficiency from
wells that had low lift efficiency caused by incomplete pump
fill.The Duri steamflood on the Island of Sumatra in Indonesia
is the largest in the world and currently produces about 200,000
bo/d.In the field, incomplete or low pump fill is the most
common operational problem experienced especially on ramp-down
wells. The low fill results from having a pump capacity that
exceeds the formation’s ability to flow fluid into the well or
from having excessive gas or steam at the pump intake.1Excess
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