Results 261 to 270 of about 267,136 (314)

Phenomena Affecting Drilling Rates at Depth

Transactions of the AIME, 1959
Published 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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Penetration Rate Prediction Models for Core Drilling

Mining, Metallurgy & Exploration, 2020
Boreholes are used for many purposes in mining operations, petroleum engineering, and construction works. Numerous factors affect the performance of drilling equipment. Researchers continue to work on the variable drilling parameters that can be adjusted in order to reach more efficient drilling operations. Penetration rate is an essential indicator in
Niyazi Bilim, Emre Karakaya
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Drilling into fracking spill rates

C&EN Global Enterprise, 2017
Spills associated with unconventional oil and gas production processes, which include hydraulic fracturing, or fracking, numbered in the thousands between 2005 and 2014, according to a recent report. Lauren A. Patterson of Duke University and her colleagues analyzed spill data from more than 30,000 unconventional oil and gas wells in Colorado, New ...
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Optimization of Drilling Fluid Flow Rates – A Study of the Drilling Fluid Flow rates and Annular Pressure in Horizontal Directional Drilling

2023
Trenchless technologies have experienced the fast development and dramatic change in the past three decades. Derived from oil and gas industry, Horizontal Directional Drilling (HDD) is considered as one of the most rapidly expanded trenchless technologies and widely used in infrastructure construction and pipeline installation, minimizing the social ...
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Hydraulic Optimization of Foam Drilling For Maximum Drilling Rate in Vertical Wells

SPE Drilling & Completion, 2005
SummaryA 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, 1988
Abstract 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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High Data-Rate Drilling Telemetry System

Journal of Petroleum Technology, 1979
An electric telemetry system composed of modified drillpipe, an internal cable to span the bottomhole assembly, and a downhole instrument was used to drill a well to 5,100 ft (1550 m). System design, handling, performance, and downhole measurements are detailed. The system is compared with other systems. Introduction -
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MWD Failure Rates Due to Drilling Dynamics

IADC/SPE Drilling Conference and Exhibition, 2010
Abstract Rig downtime due to MWD tool failure is expensive, particularly on offshore rigs with extremely high operating costs. There are different reasons for tool failures, one being the high vibration loads on MWD tools under extreme drilling conditions.
Hanno Reckmann, Pushkar Jogi, Franck Kpetehoto, Sridharan Chandrasekaran, John Macpherson   +4 more
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Laboratory Drilling Rate and Filtration Studies of Clay And Polymer Drilling Fluids

Journal of Petroleum Technology, 1967
ABSTRACT 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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Drilling rate model for Louisiana formations

Journal of Petroleum Science and Engineering, 1989
Abstract Substantial reducing in rotary-drilling operations cost could lead to possible economic recovery of smaller reservoirs. The use of an accurate drilling rate model which will increase the penetration rate and reduce the number of trips is therefore becoming increasingly important.
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