Experimental research into the effect of some operation factors and rock properties on the rate of penetration [PDF]
, 2020 Purpose. The purpose of this research is to investigate the effect of weight on bit (WOB), rotary speed (RPM), and some rock properties on the rate of penetration (ROP). Methods.
Ali, Mahrous A.M. +4 more
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Rate of Penetration Optimization using Moving Horizon Estimation [PDF]
Modeling, Identification and Control, 2016 Increase of drilling safety and reduction of drilling operation costs, especially improvement of drilling efficiency, are two important considerations in the oil and gas industry. The rate of penetration (ROP, alternatively called as drilling speed) is
Dan Sui, Bernt Sigve Aadnøy
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Theoretical Lidar Point Density for Topographic Mapping in the Largest Scales [PDF]
, 2010 When ordering LiDAR data, LiDAR point density per surface unit is important information with decisive influence on the price of the LiDAR survey. The paper first deals with the theoretical calculation of the minimum LiDAR point density, necessary for the
Crosilla, Fabio +2 more
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DEVELOPMENT OF OIL WELL MONITORING AND CONTROL SYSTEM
Academy Journal of Science and Engineering, 2022 Kick is an unplanned and undesirable influx of formation fluid into the borehole which if not curtailed, may develop into a blowout. It may arise if the formation fluid flows into the wellbore in an unplanned fa shion when the drilling mud hydrostatic ...
E. J. Atajeromavwo +3 more
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Measurements of Penetration and Detoxification of PS II Herbicides in Whole Leaves by a Fluorometric Method [PDF]
, 1984 The effect of herbicides that inhibit the photosynthetic electron transport at the photosystem II acceptor side has been analyzed in whole plants by using a fluorometric method.
Gräber, Peter +3 more
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Evaluating the maximum rate of penetration for drilling borehole in soft coal seam
Energy Science & Engineering, 2020 Most coal seams in China are characterized by high‐gas pressure and high‐gas content, which seriously threaten the safety of coal mines. Gas extraction is an effective measure for preventing gas disasters. However, the drilling process in soft coal seams
Shuo Yang +4 more
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Progesterone significantly enhances the mobility of boar spermatozoa [PDF]
, 2013 Progesterone released from the cumulus cells of the oocyte causes a number of physiological responses in human sperm cells including hyperactivation, acrosome reaction and chemotaxis. We employed a validated sperm mobility assay, which involves measuring
Adya, Ashok K. +6 more
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On the prediction for the rate of penetration of TBM.
Journal of the Japan Society of Engineering Geology, 1985 In accordance with the increase of the demmands for small diameter waterways, TBM has been watched with keenest interest recently. However, the standard for the objective judgement on the TBM feasibility has not been established as yet. The rate of penetration of TBM plays an important role as to her feasibility as the machine-operating rate as well ...
Satoshi MITANI +2 more
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Influence of corrosion rate on rust penetration in concrete
Shenzhen Daxue xuebao. Ligong ban, 2023 Rust penetration in pore structure of concrete cover happens after the reinforcement corrosion, which impedes the cracking development. To improve the accuracy of deducing the corrosion level of reinforcement from the crack width, reinforcements are ...
HONG Shuxian +3 more
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Well-seismic joint data-driven resistivity-based prediction of 3D spatial rate of penetration
Frontiers in Earth ScienceAccurate rate of penetration (ROP) prediction is important for optimizing drilling parameters, selecting drilling tools, improving drilling efficiency, and reducing operation cost.
Yangfei Yu +8 more
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