HP/HT Client Brochure - Halliburton

HIGH PRESSURE/HIGH TEMPERATURE (HP/HT)
Diesel-Based Fluid Successful in Deep, High-Pressure Wells
with Hard Formations Project
Location: West Texas
Challenge
Maximum mud weights in the 17.2 ppg range and hard
Pennsylvanian era formations in a West Texas field made
drilling slow and challenging. The highly pressured
Atoka formation and lower pressured zones including the
Strawn and Morrow were drilled within the same interval.
Mud weight was critical and equivalent circulating
density (ECD) control was a primary concern. Tripping
operations required spotting pills and staging in and out
of the hole.
Halliburton Solution
Halliburton personnel recommended drilling with the
clay-free, diesel-based INTEGRADE® system because of
its ability to help maintain a stable wellbore. Drilling with
INTEGRADE fluid can also help increase penetration
rates and optimize ECD control.
Cuttings Loading
Economic Value Created
The operator agreed to try the INTEGRADE system and
the well was displaced with a 16.4 ppg INTEGRADE
fluid at 12,753 feet (3,887 m) after drilling out from
intermediate casing. The production interval was drilled
to 17,650 feet (5,380 m). There were no unforeseen events
and casing was set with no problem.
ROP
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
17000
18000
Operator Aramco Well: Location: Gulf Prepared by: Baroid DFG Center
Accolade
Well #1
Rig: Iron 55
Flow Rate = 200 gal/min
Cuttings Load %
Transport
Average V. ft/min Hole Angle ECD lb/gal
Mud Weight = 16.3 lb/gal
Eff avg %
R-1 s@ 60 ft/hr-80 rpm
2.75
w/o Cut
19.75 in
2.44
w/ Cut
925.0 (925.0) ft
16.336/16.485 lb/gal
12.375 in
2.34
3952.0 (3952.0) ft
16.391/16.527 lb/gal
2.18
10.711 in
5500.0 (5500.0) ft
16.415/16.548 lb/gal
8.575 in
11221.0 (11221.0) ft
16.614/16.739 lb/gal
2.06
8.5 in
2.63
12516.0 (12514.0) ft
16.637/16.761 lb/gal
9.5 in
2.54
17660.0 (17315.0) ft
2.37
16.635/16.763 lb/gal
18110.0
5 10 15 20 25 0 50 100 0 52 104 30 60 90 16.30 16.80 17.30
ECD
2.471% Cutting Total
ROP = 60 ft/hr
2.337% Cutting Eff
Cutting Dia. = 0.35 in
5 x 4.276 x 16617.6 ft
5 x 3 x 600 ft
6.25 x 2.75 x 442.4 ft
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