Results 211 to 220 of about 36,919 (267)
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Laboratory Drilling Rate and Filtration Studies of Clay And Polymer Drilling Fluids
Journal of Petroleum Technology, 1967ABSTRACT Recent efforts to design drilling fluids for increased drilling rates have confirmed some laboratory results of other investigators, but have also produced additional data that should be considered. These data were obtained under controlled test conditions using a microbit drilling machine.
Charles P. Lawhon, Jay P. Simpson
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A New Robust Drilling Rate Model
Offshore Technology Conference Brasil, 2019Abstract Drilling rate remains a major challenge when it comes to planning and drilling workover and development wells. The main mission of a drilling engineer is to design a well optimizing time, cost, economics and safety. Analysis of previously drilled wells operations' records is required to perform optimization techniques to reduce ...
Mohammed Murif Al-Rubaii +3 more
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Phenomena Affecting Drilling Rates at Depth
Transactions of the AIME, 1959Published in Petroleum Transactions, AIME, Volume 216, 1959, pages 232–239. Abstract Rock downhole is known to be less drillable than when brought to the surface. This must be ascribed mainly to the presence under downhole conditions of a pressure differential across already made chips, which hinders ...
A.J. Garnier, N.H. van Lingen
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Maximising Drilling Rates with Real-Time Data-Driven Drilling Parameters Optimisation
International Petroleum Technology Conference, 2023Abstract The hardness and high abrasiveness of shale formations pose great challenges for improving drilling performance with deeper and more complex unconventional gas-reservoir formations explored and developed in the Sichuan Basin of China.
Meng Cui +4 more
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Feed rate control in robotic bone drilling process
Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 2020The bone drilling process is characterised by various parameters, the most important of which are the feed rate (mm/s) and the drill speed (rpm). They highly reflect the final effects and results of the drilling process, such as mechanical and thermal damages of bone tissue and hole quality.
Tony Boiadjiev +4 more
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Hydraulic Optimization of Foam Drilling For Maximum Drilling Rate in Vertical Wells
SPE Drilling & Completion, 2005SummaryA transient-mechanistic model of cuttings transport with foam has been recently developed and solved numerically. In this study, the new model has been used to revisit the classical theory of hydraulic optimization (i.e.,maximum bit-hydraulic-horsepower/jet-impact-force criteria).A new methodology has been suggested to determine the optimum gas-/
E. Kuru, O. M. Okunsebor, Y. Li
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Drilling rate of rotary percussion drill bits and rock characteristics
Journal of Terramechanics, 1988Abstract Fourteen kinds of rock specimen and rock mass were tested to find the main rock mass characteristics affecting the drilling rate of a bit in rotary percussion by 2 hand-type electric and air hammer drills. It was found that the drilling rate of the bit, V (cm/min), consuming constant rotary percussion power of 1050 W could be expressed as ...
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Optimization of Rates of Penetration in Deepwater Drilling: Identifying the Limits
SPE Annual Technical Conference and Exhibition, 2001Abstract Deepwater drilling in the U.S. Gulf of Mexico [GOM] is usually characterized by very narrow pore pressure / formation fracture gradient [PP / FG] windows. In GOM deepwater drilling, firm control over Equivalent Circulating Density [ECD] is required to help ensure these fracture gradients are not exceeded to reduce lost ...
T. Hemphill, B. Murphy, K. Mix
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Effects of laser drilling on rate of penetration for oil and gas wells drilling
PICALO 2010: 4th Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication, 2010Need for bring a new method of drilling oil and gas wells is necessary. drilling industry was developed, since the rotary drilling superseded cable tools drilling. One of the great parameters that effect on drilling process is ROP. The term ROP contracted, Rate Of Penetration. This paper describes result of research about laser systems in drilling rock
Mahdi Bakhtbidar, Mohsen Ghorbankhani
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Receding Horizon Control of Rate of Penetration in Rotary Drills
2019 IEEE Canadian Conference of Electrical and Computer Engineering (CCECE), 2019Blast hole drilling process is a major part of open-pit mining extraction operation. The process involves dealing with different characteristics of rocks, and complex interaction of the drill with unknown terrain. As a Figure of process productivity, rate of penetration (RoP) is the most important variable of the process which indicates how fast the ...
Jalal Habibi, Ferri Hassani
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