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Innovating While Drilling

Liner system designed to provide effective isolation in high-risk, high-cost HPHT wells


Well environments with increasing pressures, temperatures and depths are becoming the norm in hydrocarbon recovery. These complex and harsh-environment reservoirs drive the need for high-performance completion systems with more durability and reliability than conventional equipment. Innovative technology is paving the way for the industry to delve further into these challenging and risky frontiers, in which the cost of failure is enormous. Liner systems provide a variety of benefits to enhance wellbore economics and efficiency. Installing a liner can reduce casing and cementing costs and minimize rig time. Liners enable the drilling of deep wells with smaller, more efficient rigs, and they facilitate efficient casing of open-hole sections below previously installed casing. Liner systems also ensure zonal isolation while reciprocating during well conditioning and while rotating during cementing operations. Additionally, they provide annular barriers relative to long casing strings that tie back to the surface.

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


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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