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Innovating While Drilling®

Drill bit adapts depth-of-cut control to mitigate stick-slip, enhance ROP

Mitigating vibrations during drilling remains a challenge for many fixed polycrystalline-diamond-compact (PDC) bits, particularly as drillers attempt to drill longer sections in a single bit run. Vibration arising from torsional stick-slip and impact loading in interbedded formation and transition can cause premature damage to a drill bit and other components in the bottomhole assembly (BHA) – ultimately hindering drilling performance....

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NOV develops 140-ksi, sour gas-resistant coiled tubing

National Oilwell Varco (NOV) recently developed 140-ksi specified minimum yield strength (SMYS) coiled tubing, or CT140. Because the target market for high-strength tubing is high-pressure well intervention and completions, sour gas compatibility testing was performed. The testing program verified that while using chemical inhibitors, the tubing/inhibitor system was not susceptible to sulfide stress cracking. In this video from the 2017 SPE/ICoTA Coiled Tubing and Well Intervention Conference in Houston on 21 March, Kevin Elliot, NOV Product Engineering Manager, discusses the development process that was undertaken, as well as the resulting mechanical properties and fatigue life of CT140. For more information about this project, please see SPE 184806, “Development and Compatibility Testing of Coiled Tubing With 140-ksi Specified Minimum Yield Strength.”

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New control software aims to optimize water treatment processes

Water Planet has deployed its new IntelliFlux control software at California’s first merchant facility designed to treat oil and gas produced water for beneficial reuse. Operated by Sweetwater Tech Resources (STR), this regional water treatment facility gives local oil and gas producers a reliable, economic and sustainable option for converting billions of gallons of produced water annually into clean water streams available for beneficial reuse. It is located in Wasco, a town centrally located around multiple active oil fields surrounding Bakersfield. Because the wastewater can be treated for reuse, oil producers have a cost-competitive option to trucking it to third-party disposal wells. The project is expected to yield significant environmental benefits by reducing the amount of water disposed, as well ...

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New drill bit adjusts to downhole conditions for smoother, faster drilling

Baker Hughes’ newly released TerrAdapt adaptive drill bit is expected to deliver dramatic improvements in drilling economics by using automation to mitigate downhole dysfunctions that cause inefficient drilling and costly tool failures. With the industry’s first self-adjusting depth-of-cut (DOC) control elements, the TerrAdapt bit automatically changes its aggressiveness based on the formation through which it is drilling to mitigate vibrations, stick-slip and impact loading...

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