American Oil and Gas Reporter - August 2016 - 48
SpecialReport: Horizontal & Innovative Drilling
FIGURE 6A
Drilling KPIs for Curve and Lateral Sections
(Pad 1 versus Average Offset Pad 2 Wells)
16,000
350
14,000
300
250
10,000
200
8,000
150
6,000
ROP (ft/hr)
Footage Drilled
12,000
100
4,000
50
2,000
0
0
Avg Pad 2 - NW Well 1D ST1
Well 1E
Footage Curve
Well 1F
Well 1A
Well 1B
Footage Lateral
ROP Curve
Wells Southeast Direction
Well 1C
Well 1J
Well 1l
ROP Lateral
Wells Norhtwest Direction
FIGURE 6B
Drilling and Reservoir Navigation KPIs
(Pad 1 versus Average Offset Pad 2 Wells)
16,000
120
100
12,000
80
10,000
8,000
60
1 Mile = 5,280 ft
6,000
40
% in Target Zone
Footage Drilled & Feet/d
14,000
4,000
20
2,000
0
0
Avg Pad 2 - NW
Well 1D ST1
Well 1E
Total Footage
Well 1F
Well 1A
Feet/day (Drilling)
Wells Southeast Direction
ownership and add to the team's motivation and commitment. Establishing the best
combination of drilling parameters with
steering commands using real-time mon-
Well 1B
Well 1C
Well 1J
Well 1l
In Target Zone
Wells Norhtwest Direction
itoring drove the successful results on Pad
1 wells.
Because this was a new drilling area for
CONSOL Energy, a conservative ap-
proach was taken in developing the drilling
parameter road map (weight on bit, rpm,
flow rate, etc.). Incremental adjustments
were made after each dull bit analysis
along with overall performance metrics
(drilling dynamics, ROP, in-target percentage, etc.). While drilling the curve sections,
an increase in bit rpm combined with proper steer force resulted in higher BURs and
ROP. Near-bit inclination was used to project ahead and quickly determine BURs.
Among the benefits of HBRSS technology, three capabilities were crucial to horizontal drilling: distinguishing the gamma
ray readings above and below the tool,
holding a specific target inclination, and
obtaining additional tool-specific data
for azimuth control.
The Marcellus Shale has distinct gamma ray readings throughout the formation,
and the large contrast facilitates easier lateral navigation. Once landed, the HBRSS
system was set to automatically steer to a
desired target inclination. The command
was downlinked through small mud flow
variations and decoded by the downhole
tool, which then applied the right amount
of force to hold angle, minimizing wellbore tortuosity. This automated downhole
system is essential in geosteering Marcellus wells, where the sweet spot often is a
narrow window influenced by quick bed
dip changes.
Another important factor was reducing
connection times. The rig crew was motivated to drill the equivalent of one mile in
24 hours. Survey time was optimized us-
CONSOL Commences Production On PIT Project
PITTSBURGH, PA.-On July 18, officials from Allegheny County, the Allegheny County Airport Authority
(ACAA), and CONSOL Energy announced first natural gas production
from the first pad drilled and completed
on the grounds of the Pittsburgh International Airport.
All six horizontal wells on Pad 2-the
first of six planned pads with up to 45
wells at PIT-were turned online and
flowing produced gas into the MarkWest
midstream infrastructure system that
was constructed for the project, according to the officials.
Allegheny County Executive Rich
Fitzgerald said commencing production
at PIT marked a critical "next phase" of
the gas exploration, development and production partnership expected to continue
48 THE AMERICAN OIL & GAS REPORTER
through 2018, and bring hundreds of millions of dollars in economic development
activity to the region.
"We were thrilled to have the opportunity to explore this public/private partnership two years ago following an extensive public process. Today, we are celebrating the benefits of it as we see our airport benefitting from reduced costs and
increased service," Fitzgerald stated.
"Our region, as a whole, will continue to
benefit with the start of production."
Christina Cassotis, ACAA chief executive officer, said ACAA received a $46
million upfront payment as part of the
deal and will receive 18 percent royalties
on the produced gas, providing a critical
non-aviation revenue stream to help reduce fees to airlines.
"Since the initial lease was signed and
the upfront payment received, we have reduced fees to airlines to their lowest rates
in eight years," Cassotis reported. "Innovative partnerships like this with a local,
world-class company like CONSOL are
key in helping attract air service."
CONSOL Energy was awarded the
lease right to 9,200 acres at PIT in February 2013, noted Tim Dugan, the company's chief operating officer. "We are
very proud to have been selected to develop this flagship project," Dugan said.
"CONSOL takes our responsibility in
terms of safety and protecting the environment very seriously. These are the core
values that we live by each and every day,
and these are the values which will continue to guide us as we move forward with
this important project."
❒
American Oil and Gas Reporter - August 2016
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American Oil and Gas Reporter - August 2016 - Cover2
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American Oil and Gas Reporter - August 2016 - Contents
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