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Innovating While Drilling

A bit of history: Overcoming early setbacks, PDC bits now drill 90%-plus of worldwide footage

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Editor’s note: This is an excerpted version of an article that appears in a new Drill Bits e-book that will be available through the IADC bookstore and e-bookstore later this year. Since the invention of the carbide-supported polycrystalline diamond cutter (PDC) by General Electric in 1971, this technology has impacted nearly all material removal industries. This article will trace the history and significant milestones of PDC technologies in the oil and gas well drilling industry since their introduction. This article will focus on advances in synthetic diamond cutters, bit design and other factors that have significantly increased drill bit performance and drilling efficiency to a point where PDC bits have taken over most applications once dominated by the venerable rolling cone bit, introduced by the Hughes Tool Co (HTC) in 1909. Over the years, the key bit company customers have insisted on pushing the technology and performance envelope, not allowing the PDC cutter to become a commodity item. As a result, PDC cutters, inserts, wear parts and bearings for oil and gas drilling products are, arguably, the largest segment of the super-abrasives industry. This technology is playing a significant role in changing how and where oil and gas wells are drilled

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JIP to investigate capabilities of flow meter technology for phase contaminated oil flows

DNV GL’s Multiphase Flow Laboratory allows equipment manufacturers and oil and gas companies to test, validate and calibrate multiphase technologies, such as separators and flow meters.

DNV GL has initiated a Joint Industry Project (JIP), now open for industry partners, E&P companies and manufacturers to join, to assess the capability and feasibility of Coriolis and ultrasonic flow meters. Coriolis and ultrasonic flow meters are widely accepted for application in single-phase oil flows by the oil industry. However, there is little validation or independent test results to support the claim that they produce accurate allocation measurement results, according to DNV. Inaccurate results related to the oil flow can present both operational and financial risks by negatively influencing decision-making and understanding of operational efficiency. The JIP will provide testing guidelines, a performance assessment and correction algorithms as a foundation for using Coriolis and ultrasonic flow meters for phase ...

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