Perform a HEWD operation through interbedded formations
PEMEX wanted to drill a 12 ¼-in hole while simultaneously enlarging it to 14 1/2 in for an offshore exploratory well. The section, from 4,028-m to 5,516-m MD [13,215-ft to 18,097-ft MD], was made up of interbedded sand, salt, and shale formations with an unconfined compressive strength (UCS) between 3,000 and 12,000 psi [20.7 and 82.7 MPa].
At approximately 4,800-m [15,744-ft] MD, PEMEX would decide whether to continue drilling or run the contingency 11 7/8-in liner. If PEMEX decided to continue drilling, it would require a reamer with the ability to activate multiple times. This would eliminate the extra trip required to replace the BHA.
Use the Rhino XC reamer and an AxeBlade bit for a single-run operation
By using the IDEAS integrated dynamic design and analysis platform, PEMEX was able to achieve optimized drilling BHA dynamics and determine bit, reamer, RSS, and measurement tool compatibility.