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CASE HISTORY
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ESP System with Gravel Pack Tool Replaced
Rod Lift and Increased Run Life 270%
Location: Bakersfield, California
2000
Results
Production (BPD)
1,619
Well
Runlife (Days)
production improved 1,589 B/D
with integrated production solution
1500
1,349
Run
life improved from 365 days to
1,349 days, eliminated down time
and deferred production
1000

Reduced workover expenditures due
to rod pump replacement
500
365
Challenges
Production
was inhibited by
drawdown limitations of rod lift
that only produced 30 B/D
30
0
Before well conversion and workover
After well conversion and workover
Graph 1. Well production increment before and after workover and ALS conversion.
An operator in Bakersfield, California, had
a field with an unconsolidated sandstone
formation. The reservoir had very low pressure
and was drilled overbalanced. Sand was
produced with the production fluid, which was
problematic for the rod lift system. Therefore,
the operator approached Baker Hughes
seeking a solution to handle sand and
increase production. The rod lift system in this
well was producing less than 30 B/D along
with 509 Mcf/D gas. This rod lift system lasted
365 days before failure due to low production
caused by the presence of sand.
Baker Hughes installed an electrical
submersible pumping (ESP) system featuring a
PMSSD P12 pump, a GM™ Performance Series
vortex gas separator and an Electrospeed
Advantage™ variable speed drive. The pump
was designed to draw down the well with a
production rate of 1,000 BFPD.
The Integrated Solutions team from
Baker Hughes worked together to develop a
system solution for this operator. Stimulation
was required for a 4-ft. section. The well was
subjected to a one-hour mud acid stimulation.
After the stimulation was completed, a gravel
pack tool was set at a depth of 3,251 ft.
The well produced more fluid with the ESP
system solution than the rod lift method.
Production increased from 30 B/D to
1,619 B/D and run life increased from
365 days to 1,349 days.
Well stimulation and the addition of the
gravel pack tool increased well productivity
and removed solids and dirt buildup that
previously decreased wellbore pressure and
hydrocarbon flow.
Tight
open perforation interval
needed to be stimulated
Unconsolidated
sandstone reservoir
Baker Hughes solution
Integrated
Solutions team worked
together to provide a system
solution for the operator
Performed
due diligence prior to the
workover job

Installed a 400P12 PMSSD pump
along with GM Performance Series
vortex gas separator and Electrospeed
Advantage variable speed drive to
replace the rod lift system
Used
well stimulation and gravel pack
tool to handle unconsolidated sand
CASE HISTORY
Figure 1. The status of the well was monitored. Well identity and some information has been removed due to
customer privilege.
GM and Electrospeed Advantage are trademarks of Baker Hughes Incorporated.
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