Results 231 to 240 of about 279,186 (291)

An assessment of stress and production rate of sucker rod heat pipes in oil well pumping system

Deep Underground Science and Engineering, EarlyView.
The sucker rod pumping system is the preferred oil extraction technique. The concept about equipping the hollow vacuum space in solid sucker rods with heat pipe has been scrutinized in terms of stress and oil production evaluation. Abstract The implementation of the heat pipe concept in sucker rods for oil pumping systems negates the requirement for an
R. S. Anand, Ang Li, Wenbo Huang, Juanwen Chen, Qingshan Ma, Fangming Jiang   +5 more
wiley   +1 more source

Publisher Correction: Diversities of chromite mineralization induced by chemo-thermal evolution of the mantle during subduction initiation. [PDF]

Nat Commun
Zhang PF, Zhou MF, Robinson PT, Malpas J, Yumul GP, Wang CY, Li J.   +6 more
europepmc   +1 more source

Real‐time lithology identification while drilling based on drill cuttings image analysis with ensemble learning

Deep Underground Science and Engineering, EarlyView.
A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Xueqiu He, Liang Zhao   +7 more
wiley   +1 more source

Trench sediment heterogeneity controls accretion mechanisms in subduction zone. [PDF]

Sci Rep
Sanità E, Di Rosa M, Della Porta G, Catanzariti R, Pandolfi L, Marroni M.   +5 more
europepmc   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Impact of pH and salinity fluctuations on oxidation of Fe(II) by nitrate-reducing microorganisms enriched from the reduced tidal sediment of an extreme acidic river (Río Tinto, Spain). [PDF]

FEMS Microbiol Ecol
Bottaro M, Abramov S, Amils R, Straub D, Kühnel S, Mollenkopf M, Kleindienst S, Obst M, Kappler A.   +8 more
europepmc   +1 more source

(Table 1) Geochemistry of ODP Hole 130-807C carbonates across the K/T boundary

, 1993
Richard M. Corfield, William V. Sliter, Isabella Premoli Silvá, J. A. Tarduno, Roman A. Schmitt, Yungang Liu, Sherwood W Wise, Shaozhi Mao, Julie E. Cartlidge, Wolfgang Berger   +9 more
openalex   +1 more source

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

Application of machine learning in forensic geochemistry using presalt oil samples from the Santos basin. [PDF]

Sci Rep
Silva GMA, de Miranda FP, Guzzo JVP, Bastos WL, Rocha Y, de Souza IVAF, Matias IO, Torres SB, de Araujo Ponte FF.   +8 more
europepmc   +1 more source

Petrography, biomarker composition, mineralogy, inorganic geochemistry and paleodepositional environment of coals from La Ballesta mine, Peñarroya Basin, Spain

, 2017
E. Lorenzo, Ángeles G. Borrego, G. Márquez, Felipe González, Carlos Pérez   +4 more
openalex   +1 more source