Results 11 to 20 of about 3,836,809 (259)

Investigation of Stress Sensitivity of Shale Nanopores via a Nuclear Magnetic Resonance Method

Energies, 2022
Nuclear magnetic resonance (NMR) is widely used to characterize the pore structure of rock. The nanoscale pores and fractures are well developed in a shale gas reservoir.
Mingjun Chen, Zhehan Lai, Yili Kang, Sidong Fang, Hua Liu, Weihong Wang, Jikun Shen, Zhiqiang Chen   +7 more
doaj   +1 more source

Permeability Evolution of Bituminous Coal and Its Dynamic Control, a Case Study from the Southeastern Ordos Basin, China

Energies, 2023
Coalbed methane (CBM) reservoirs’ permeability is the result of dynamic variations influenced by tectonics, hydrology and the CBM production process. Taking samples from the southeastern Ordos Basin, China, the permeability evolution of bituminous coal ...
Yongkai Qiu, Dingjun Chang, Fengrui Sun, Abulaitijiang Abuduerxiti, Yidong Cai   +4 more
doaj   +1 more source

Research on prediction methods of formation pore pressure based on machine learning

Energy Science & Engineering, 2022
Formation pressure is the most fundamental data in oil and gas drilling and production; it has an important position in the entire cycle of oil and gas extraction.
Honglin Huang, Jun Li, Hongwei Yang, Biao Wang, Reyu Gao, Ming Luo, Wentuo Li, Geng Zhang, Liu Liu   +8 more
doaj   +1 more source

Gauge Invariant Effective Stress-Energy Tensors for Gravitational Waves [PDF]

, 1996
It is shown that if a generalized definition of gauge invariance is used, gauge invariant effective stress-energy tensors for gravitational waves and other gravitational perturbations can be defined in a much larger variety of circumstances than has ...
D. R. Brill, G. A. Burnett, J. H. Taylor, M. Efroimsky, Paul R. Anderson, R. A. Isaacson   +5 more
core   +3 more sources

Effective stress-energy tensors, self-force, and broken symmetry [PDF]

, 2009
Deriving the motion of a compact mass or charge can be complicated by the presence of large self-fields. Simplifications are known to arise when these fields are split into two parts in the so-called Detweiler-Whiting decomposition.
Abraham I Harte, Abraham M, Brewin L, Dixon W G, Harte A I, Harte A I, Harte A I, Harte A I, Hatzinikitas A, Lorentz H A, Nester J M, Poisson E, Wald R M   +12 more
core   +1 more source

Laboratory Study of Effective Stress Coefficient for Saturated Claystone

Applied Sciences, 2023
Claystone is potentially the main rock formation for the deep geological disposal of high-level radioactive nuclear waste. A major factor that affects the deformation of the host medium is effective stress.
Fanfan Li, Weizhong Chen, Zhigang Wu, Hongdan Yu, Ming Li, Zhifeng Zhang, Fusheng Zha   +6 more
doaj   +1 more source

Field investigation of deformation characteristics and stress mobilisation of a soil slope [PDF]

, 2015
Stress mobilisation and deformation of a slope are important for engineers to carry out reliable design of retaining systems. However, most case histories reported mainly on the response of pore-water pressure (PWP), whereas knowledge about the stress ...
AK Leung, AK Leung, AK Leung, Anthony Kwan Leung, BSI, Charles Wang Wai Ng, CWW Ng, CWW Ng, CWW Ng, CWW Ng, CWW Ng, I Meilani, IJA Brackley, JA Smethurst, JD Coleman, K Sassa, MT Genuchten Van, N Khalili, SMO, T Sakaki, TT Lim, WA Take, YK Kim   +22 more
core   +3 more sources

Experimental Analysis of Effective Stress Sensitivity of 3# Coal Seam Permeability in Xinjing Mine

Meikuang Anquan, 2020
The KDZS-II type coal body gas instantaneous desorption and seepage characteristic tester was used to analyze the effective stress sensitivity of 3# coal seam in Xinjing Mine under the gas pressure conditions of 0.31 MPa and 0.61 MPa.
XIE Yuhua, ZHAO Kun, LIU Jianbao, ZHANG Jianfeng, YANG Changyong
doaj   +1 more source

The effect of stress and magnetostriction on the anisotropy of CoNi/Pt multilayers [PDF]

, 1996
An attempt is made to correlate the effective magnetic anisotropy of sputtered CoNi/Pt multilayers to the average stress in the thin film.
Bijker, M.D., Drent, W.P. van, Lodder, J.C.   +2 more
core   +2 more sources

Preliminary Validation of a Novel Method for the Assessment of Effective Stress State in Partially Saturated Soils by Cone Penetration Tests

Geosciences, 2018
A proper assessment of the soil effective stress state is crucial in many cases to identify a potential geological/geotechnical hazard as shallow landslides or failure of levees that may have a significant impact on human activities and development. This
Diego Lo Presti, Stefano Stacul, Claudia Meisina, Massimiliano Bordoni, Marco Bittelli   +4 more
doaj   +1 more source