Rockcliff Energy wants to reduce well days through faster ROP and considers the bit a primary factor. Indeed, Rockcliff set past drilling performance records with previous drillbit technologies from SLB but continues to help drive design improvements specific to impact-prone formation characteristics of the Haynesville Shale, comprising interbedded limestone, anhydrite, shale, and sandstone.
SLB recommended implementing in-bit data acquisition using Synapse performance insights and optimization service in a baseline bit design. Data is leveraged within the IDEAS integrated dynamic design and analysis platform to build virtual formations and, subsequently, a fit-for-basin bit design. Using learnings captured with Synapse service and close customer engagement, a bit design was derived combining Stinger conical diamond elements and Strata concave diamond cutting elements. Both the Stinger and Strata elements would enable the bit to endure and better fail the higher unconfined compressive strength (UCS) areas of the formation, and Strata elements would also provide higher ROP in the medium-strength zones. Additionally, significant hydraulic modifications were made to increase shallow-hole ROP.
Based on the data acquired by Synapse service, the bit designed specifically for the Rockcliff Energy application drilled 69% faster compared with the closest offset (within 2 miles), drilling 6,734 ft at 114 ft/h. A third-party bit used in the offset drilled less footage at an ROP of only 68 ft/h. Synapse service saved Rockcliff nearly 40 h of drilling time, setting a new ROP record. This performance gain demonstrated there was no longer a lag in shallow-hole ROP and also validated that there was a 55% reduction in vibrations compared with the baseline design.
