Permian Basin 2018

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PERMIAN BASIN: TECHNOLOGY 46 | October 2018 | enhanced stabilization, greater durability and improve azimuthal control to track straight to stay on target in lateral and tangent sections. "As the number of reservoir targets that require a horizontal or deviated wellbore to maximize reserve recovery continue to expand, it is even more important than ever for the drillbit to stay in zone," said Afton Noel, PDC product man- ager, drillbits for BHGE. "A new gauge pad fea- ture enables the Dynamus drillbit to spend less time sliding in tangents and laterals. This results in performance gains and better hole quality. The Dynamus extended-life bit also features a high-torque shank to withstand the demands of high-torque motors. An optimized blade layout, coupled with new cutter geometry, minimizes load fluctuations, which leads to a more durable cutting structure that doesn't compromise performance." BHGE configured an anti-walk gauge for conven- tional motors to improve tracking and reduce slide time, resulting in an increase in the overall section ROP. This benefits operators by reducing drilling time, optimizing wellbore quality, and allowing for greater flexibility in bottomhole assembly design. Slides can account for up to 45% of the drilling time, but only 10% to 15% of the distance drilled, according to BHGE. The bit's anti-walk gauge pad includes a stripe to limit the depth of cut against the borehole wall for reliable tracking, and it fea- tures a relief on the gauge pad to allow for planned build-up rates when required. As of mid-August, BHGE completed multiple anti-walk gauge tests in different areas in North America. One of the runs in the Permian resulted in the new Dynamus anti- walk bit increasing the ROP by 40%, which reduced the time to drill a lateral by three days compared to the competition's average drill times. "The Dynamus platform is built on a combina- tion of revelations in drilling technology: StayTrue, StayCool 2.0 and the newest addition, AntiWalk i technology," Noel said. "Dynamus AntiWalk i bit technology came as a direct result of listening to customers talk about leaving performance on the table due to difficul- ties with tracking and excessive slides while drilling horizontals. This revelation was developed specifi- cally to address these inefficiencies and provide a one-of-a-kind solution to track straight and stay on target." Beyond bits, BHGE also is looking at new facets of completion technologies and has most recently introduced a new formula for its SPECTRE disinte- grating frack plug, aimed at delivering predictable, reliable performance at lower temperatures like those in the Permian Basin. The company's disin- tegrating materials technology has been evolving for almost a decade. The new formula expands the SPECTRE plug's function—including maintaining pressure integrity and disintegrating at predictable rates—to temperatures as low as 100 F. "No other 'disintegrating' plug on the market can reliably perform in these conditions," said Gabe Casanova, product line manager, wireline conveyed completions for BHGE. "In addition, most so-called disintegrating plugs contain cast iron or ceramic components, so they don't truly disintegrate." BHGE views the primary benefit of the reformu- lated SPECTRE plug as its dissolvability. It does not have to be milled out, which saves time and thus money. The SPECTRE plug has been applied in just about every major basin in North America and, with the new BHGE-developed low-tempera- ture version, it is now being run in the Permian. Coiled tubing units can be hard to come by and costly, making the benefits of the SPECTRE plug The Dynamus extended-life drillbit enables the user to reduce trips while protecting sensitive bottomhole assembly components and hole quality by mitigating lateral vibrations. (Image courtesy of Baker Hughes, a GE company)

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