Results 11 to 20 of about 922,670 (302)
Gels, 2023 In this study, the reservoir drill-in fluid (RDF) was modified and optimized to improve the rheological properties and reduce the filtration properties of the drilling fluid used for drilling the oil-bearing zone horizontally.
Neamat Jameel, Jagar A. Ali
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Role of Air in Granular Jet Formation [PDF]
, 2007 A steel ball impacting on a bed of very loose, fine sand results in a surprisingly vigorous jet which shoots up from the surface of the sand [D. Lohse et al., Phys. Rev. Lett. 93, 198003 (2004)].
Bergmann, Raymond +4 more
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Root growth and soil nitrogen depletion by onion, lettuce, early cabbage and carrot [PDF]
, 2001 Experiments examining root growth, the utilization of N and the effect of green manures were carried out on four vegetable crops. Large differences were observed both in rooting depth penetration rates, and in final rooting depth and distribution.
Thorup-Kristensen, K.
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Study on Drill String Stick-slip Vibration Pattern Under Bit-Rock Interaction
Shiyou jixie, 2023 Stick-slip vibration leads to high-frequency shear stress on drill string and premature fatigue of drill string.Therefor,the torsional vibration model of drill string system considering bit-rock interaction was built by coupling the bit-rock interaction ...
Xing Xuesong +4 more
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Rates of penetration of fixing fluids [PDF]
American Journal of Anatomy, 1960 No Abstract.
openaire +3 more sources
Prediction of penetration Rate and cost with Artificial Neural Network for Alhafaya Oil Field
Iraqi Journal of Chemical and Petroleum Engineering, 2018 Prediction of penetration rate (ROP) is important process in optimization of drilling due to its crucial role in lowering drilling operation costs. This process has complex nature due to too many interrelated factors that affected the rate of penetration,
Kadhim Hmood Mnati, Hassan Abdul Hadi
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Data Knowledge Dual-Driven Rate of Penetration Prediction Method for Horizontal Wells
Applied Sciences, 2023 The prediction and optimization of the rate of penetration (ROP) for horizontal wells are more complicated than for vertical wells, but most of the current ROP prediction studies are for vertical wells, which cannot be adapted to the complex drilling ...
Xiuwen Zhao, Hu Yin, Qian Li
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Energies, 2023 Prediction of the rate of penetration (ROP) is integral to drilling optimization. Many scholars have established intelligent prediction models of the ROP.
Jianxin Ding +7 more
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Penetration Rates of Formaldehyde [PDF]
Microscopy Today, 2002 Abstract Formaldehyde is one of the most rapidly penetrating fixatives used. Unfortunately, it is one of the slowest to fix tissue. This paradox was finally explained by Burnett in 1982. An fine description of the properties of formaldehyde may be found in John Kiernan's book.
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Rudarsko-geološko-naftni Zbornik, 2021 Rock drilling is the process of penetrating and crushing rocks, which is characterized by the low rate of penetration (ROP) and drilling rate because of the amount of cuttings that remain in the drilling environment and the thermal stresses generated at ...
Shahrokh Khosravimanesh +3 more
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