Results 51 to 60 of about 34,203 (251)

Downhole logging as a paeoceanographic tool on ocean drilling program leg 138: Interface between high-resolution stratigraphy and regional syntheses [PDF]

, 1992
On Ocean Drilling Program (ODP) Leg 138, standard shipboard procedures were modified to allow for the real-time monitoring of several laboratory core-scanning systems that provide centimeter-scale measurements of saturated bulk density, magnetic ...
Bloomer, Stephen F., Dadey, Kathleen A., Hagelberg, T. K., Lyle, Mitchell, Mayer, Larry A., Pisias, Nicklas G., Shipboard Scientific Party   +6 more
core   +6 more sources

Design and Initial Performance of the Askaryan Radio Array Prototype EeV Neutrino Detector at the South Pole

, 2011
We report on studies of the viability and sensitivity of the Askaryan Radio Array (ARA), a new initiative to develop a Teraton-scale ultra-high energy neutrino detector in deep, radio-transparent ice near Amundsen-Scott station at the South Pole.
Allison, P., Auffenberg, J., Bard, R., Beatty, J. J., Besson, D. Z., Boeser, S., Chen, C., Chen, P., Connolly, A., Davies, J., DuVernois, M., Fox, B., Gorham, P. W., Grashorn, E. W., Hanson, K., Haugen, J., Helbing, K., Hill, B., Hoffman, K. D., Huang, M., Huang, M. H. A., Ishihara, A., Karle, A., Kennedy, D., Landsman, H., Laundrie, A., Liu, T. C., Macchiarulo, L., Mase, K., Meures, T., Meyhandan, R., Miki, C., Morse, R., Newcomb, M., Nichol, R. J., Ratzlaff, K., Richman, M., Ritter, L., Rotter, B., Sandstrom, P., Seckel, D., Touart, J., Varner, G. S., Wang, M. -Z., Weaver, C., Wendorff, A., Yoshida, S., Young, R.   +47 more
core   +1 more source

Reservoir-scale transdimensional fracture network inversion [PDF]

, 2019
The Waiwera aquifer hosts a structurally complex geothermal groundwater system, where a localized thermal anomaly feeds the thermal reservoir. The temperature anomaly is formed by the mixing of waters from three different sources: fresh cold groundwater,
Kühn, Michael, Reich, Sebastian, Somogyvári, Márk   +2 more
core   +1 more source

Strain‐based modeling and analysis for rock blasting and geomechanics applications

Deep Underground Science and Engineering, EarlyView.
This paper introduces a novel strain‐based modeling approach for blasting and geomechanical applications, using measurable variables like particle velocity, strain, and displacement. By bypassing complex constitutive relations, strain‐based models capture critical blasting trends and full‐blast design parameters with minimal calibration.
Ruilin Yang
wiley   +1 more source

Research on borehole stability of shale based on seepage-stress-damage coupling model

Fracture and Structural Integrity, 2013
In oil drilling, one of the most complicated problems is borehole stability of shale. Based on the theory of continuum damage mechanics, a modified Mohr-Coulomb failure criterion according to plastic damage evolution and the seepage-stress coupling is ...
Xiaofeng Ran, Yuezhi Wang, Shanpo Jia
doaj  

Position characteristics of horizontal-directional long boreholes in overlying strata and drainage mechanism of pressure-relief gas in longwall mining

Meitan xuebao, 2023
The pressure-relief gas drainage in longwall mining goaf is an important part of the simultaneous extraction of coal and gas in the green mining technology system. The horizontal-directional long boreholes arranged in overlying strata for pressure-relief
Mingjie GUO, Wenbing GUO, Gaobo ZHAO, Ruifu YUAN, Yusheng WANG, Erhu BAI   +5 more
doaj   +1 more source

Subgrade geology beneath railways in Manchester [PDF]

, 2005
It is not sufficient to identify fine-grained soils, only, as locations for potential subgrade problems as could be done using a traditional 2D geological map.
Freeborough, K., Gunn, D.A., Kessler, H., Lelliott, M., Nelder, L.M., Reeves, H.J.   +5 more
core  

Applied scientific and systemic problems of the related ore-dressing plants interaction in the event of decommissioning the massif that separates their quarries [PDF]

, 2020
Purpose. Determining the possible and substantiating expedient alternate design and engineering decisions regarding the stage of spacial union of the adjacent quarries belonging to various owners by mining the rock pillar between the No. 3 quarry of PJSC
Azarian, Volodymyr, Lutsenko, Serhii, Skachkov, Andrii, Titov, Danylo, Zaiarskyi, Ruslan, Zhukov, Serhii   +5 more
core   +1 more source

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

Deep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

Wellbore Stability of a Deep-Water Shallow Hydrate Reservoir Based on Strain Softening Characteristics

Geofluids, 2020
Deep-sea hydrate has great commercial exploitation value as a new type of energy, due to huge reserves, wide distribution, cleanliness, and lack of pollution.
Wenrong Feng, Danqiong Li, Guorong Wang, Yujia Song   +3 more
doaj   +1 more source