Exxon 2014 Annual Report Download - page 21

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Bakken: Liquids Growth Engine
In the Bakken, net production increased 38 percent in
2014, due to a record 144 wells brought to sales, improved
well productivity, and accelerated pad development in
our core acreage. Production has increased sixfold since
our 2008 entry into the play. We were operating 16 rigs
at year end, up 45 percent from the prior year. Natural
gas sales are also growing, while gas flaring is being
reduced with additional industry infrastructure and field
modifications.
Our operating efficiency is improving in the Bakken.
We continually adjust our drilling and completion
practices to reduce costs, and have experienced a
34-percent decline in per-well drilling days since 2011.
The ExxonMobil proprietary XFrac completion technology,
now piloted in more than 20 wells, will potentially enable
further cost reductions as it significantly reduces the
number of plugs between fracture stimulation stages
deep in the well.
Ardmore/Marietta: Entering the Development Phase
In southern Oklahoma, net production from our Ardmore/Marietta liquids-rich plays increased 30 percent in 2014,
attributable mainly to higher activity as we brought 89 wells to sales. Ten operated rigs were utilized across our leasehold
of more than 225,000 net acres.
In the Ardmore area, focus has turned to developing the core Woodford Shale acreage and optimizing spacing while we
continue to delineate the overlying Caney Shale. Similar to our other unconventional plays, we are capturing substantial
operating efficiencies in the Ardmore as drilling days per well have decreased by 46 percent since 2009 to roughly 33 days.
In the Marietta area, which features a higher proportion of oil production, we commenced delineation of our leasehold in
2014 by bringing 12 wells
to sales.
Following the success of
field trials in Fayetteville,
ExxonMobil’s Drilling Advisory
System tool was deployed
to support operations in the
Ardmore Basin in 2014.
It seamlessly integrates with
existing drilling rig systems to
promote consistent application
of ExxonMobil’s Fast Drill
process, with cost savings
derived from improved drilling
efficiency and performance.
Production from the Bakken increased almost 40 percent in
2014 through a record 144 wells to sales.
CO2 injection from the Means
Compressor Station is used to
enhance oil recovery in the
Permian Basin.
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