Customize short BHA with dual reamers and sonic configuration while
acquiring high-quality data
Pemex and Schlumberger collaborated to develop a compact BHA
configuration with the SonicScope 825 multipole sonic-while-drilling service in
combination with a dual-reamer design. The SonicScope 825 service would be
placed closer to the bit, which would detect drilling hazards sooner.
Additionally, the shorter BHA would allow Pemex to drill a short pilot hole and
place casing at the needed depth.
Satisfy demanding drilling needs and detect potential hazards
The innovative BHA configuration—a compact design with two reamers
and the SonicScope 825 service—saved Pemex two days of rig time by
eliminating the need for additional logging and reaming. The quality log data
provided by SonicScope 825 service was used to successfully drill the well and
set the casing at the correct depth. The sonic data was used for real-time
geomechanics and monitoring of the wells. As high-quality, real-time data was
acquired, the holes were underreamed to deliver a hole size suitable for
running the casing designed in the well program. The technology provided by
Schlumberger helped Pemex drill the wells in an area with high-risk,
unconsolidated formations in the shallow sections, along with increasing pore
pressure and complex geology in the deeper sections.
