Results 21 to 30 of about 34,203 (251)

Porous materials in building energy technologies—a review of the applications, modelling and experiments [PDF]

open access: yes, 2018
Improving energy efficiency in buildings is central to achieving the goals set by Paris agreement in 2015, as it reduces the energy consumption and consequently the emission of greenhouse gases without jeopardising human comfort.
Esfahani, Javad Abolfazli   +2 more
core   +1 more source

Present-day stress orientations and tectonic provinces of the NW Borneo collisional margin [PDF]

open access: yes, 2010
Extent: 15p.Borehole failure observed on image and dipmeter logs from 55 petroleum wells across the NW Borneo collisional margin were used to determine maximum horizontal stress (σH) orientations; combined with seismic and outcrop data, they define seven
Agostinelli   +73 more
core   +2 more sources

Characteristics of Stress-Displacement-Fracture Multi-Field Evolution around Gas Extraction Borehole

open access: yesEnergies, 2023
To ensure the effectiveness of the gas extraction borehole, it is necessary to investigate the stress-displacement-fracture evolution of the coal around the borehole.
Xiaoyan Sun   +4 more
doaj   +1 more source

From source to sink in central Gondwana: Exhumation of the Precambrian basement rocks of Tanzania and sediment accumulation in the adjacent Congo basin [PDF]

open access: yes, 2016
Apatite fission track (AFT) and (U-Th)/He (AHe) thermochronometry data are reported and used to unravel the exhumation history of crystalline basement rocks from the elevated (>1000 m above sea level) but low-relief Tanzanian Craton.
Brown, Roderick   +5 more
core   +1 more source

Analysis of borehole stability in gas drilling using a thermal elastoplastic coupling model

open access: yesEnergy Science & Engineering, 2021
Gas drilling causes lower pressure in the borehole and the Joule‐Thomson effect to occur at the bit nozzle, resulting in a temperature distribution in the borehole different from that in the original formation.
Zhongxi Zhu   +3 more
doaj   +1 more source

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+3 more sources

Stability Characteristics of Horizontal Wells in the Exploitation of Hydrate-Bearing Clayey-Silt Sediments

open access: yesJournal of Marine Science and Engineering, 2022
The mechanical properties of hydrate-bearing strata in clayey-silt sediments are significantly different from those of either conventional reservoirs or hydrate-bearing sandy sediments, which poses great challenges for wellbore stability analyses.
Xiaofeng Sun   +4 more
doaj   +1 more source

Technological complex for production, transportation and storage of gas from the offshore gas and gas hydrates fields [PDF]

open access: yes, 2016
Purpose. Substantiation and development of schematics acceptable for the existing technological methods of natural gas production and transportation from the offshore fields of gas or gas hydrates.
Pedchenko, L, Pedchenko, М
core   +2 more sources

Swelling Pressure of Double-Expansive Material and Its Active Support Effect for Coal Seam Gas Drainage Borehole

open access: yesAdvances in Materials Science and Engineering, 2018
To improve coal seam gas drainage performance, we developed a double-expansive (DE) material to seal the borehole. The swelling process of this material includes an initial swelling stage and a secondary swelling stage.
Zhiming Wang, Yuning Sun
doaj   +1 more source

Borehole enlargement rate as a measure of borehole instability in hydrate reservoir and its relationship with drilling mud density

open access: yesJournal of Petroleum Exploration and Production Technology, 2021
Borehole collapse will pose a threat to the safety of equipment and personnel during drilling operation. In this paper, a finite element multi-field coupling model for investigating borehole collapse in hydrate reservoir was developed.
Qingchao Li   +5 more
doaj   +1 more source

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