D Technology
Consistent
directional control
D
Technology™ enhances steering performance so wear
and tear on the BHA is reduced significantly. By
balancing the bit’s face and lateral aggressiveness,
these PDCs overcome the ever-increasing complexity of
directional applications and tougher performance
objectives. In motor steerable, rotary steerable, and
vertical drilling applications, the D Technology total
system solution delivers
- consistent
directional control
- increased ROP
- superior hole
quality
-
improved tool life.
ROP increases 127%
Offshore Angola, a 12 1/4 in. HCD408Z drilled a tangent
section while holding inclination at 58.5 deg and
azimuth at 303 deg. This D Technology bit drilled a
total of 799 m just under 27 hr, exceeding all
directional and ROP objectives. On-bottom ROP of 30 m/hr
compared with the offset interval of 13.2 m/hr.
ROP increases 44%
The Red Willow field,
British Columbia, was perceived to be drillable only
with roller cone bits because of the harsh interbedded
siltstone, sandstone, shale, and some chert
conglomerate. Ordinary PDCs generated too much
reactive torque and vibration. An 8 3/4 in. HCD506Z and
HCD506ZX replaced roller cone bits in three directional
runs. D Technology average ROP
increased 44% to 13 m/hr from 9 m/hr. Cost-per-meter
decreased 27% to $188/m from $259/m.
Improved toolface control; better build rates
Patented
EZSteer™
depth-of-cut-control technology optimizes toolface control
on motor steerable systems and reduces torsional
vibration on rotary steerable systems, enhancing system
performance.
LGC™ length, geometry, and cutter
technology delivers predictable and consistent build
rates without compromising hole quality.
Additional Information
SPE 95546—A Fundamental Model for Prediction of
Hole Curvature and Build Rates With Steerable Bottomhole
Assemblies
SPE 102307—Performance Step Change in Kuwait: Drilling
Deep-Directional 16-in. Hole Build Section Saves Operator 13 Days
Rig Time
SPE 104388—Successful PDC/RSS Vibration Management Using
Innovative Depth-of-Cut Control Technology: Panna Field, Offshore
India
SPE 104623—Application of Novel Technology Improves Drilling
Performance In Multilateral Field Development Offshore West
India—Reducing Risk and Increasing Production
SPE 79796—New PDC Design Process Solves Challenging Directional
Application in Abu Dhabi Onshore Fields
SPE 84448—A Model for Borehole Oscillations |
