Results 21 to 30 of about 508,546 (355)

Classification of microscopic pore-throats and the grading evaluation on shale oil reservoirs

open access: yesPetroleum Exploration and Development, 2018
: On the basis of the characterization of microscopic pore-throats in shale oil reservoirs by high-pressure mercury intrusion technique, a grading evaluation standard of shale oil reservoirs and a lower limit for reservoir formation were established ...
Shuangfang LU   +7 more
doaj   +1 more source

A novel approach of tight oil reservoirs stimulation based on fracture controlling optimization and design

open access: yesPetroleum Exploration and Development, 2020
: To deal with the stress interference caused by simultaneous propagation of multiple fractures and the wettability reversal and physical property changes of the reservoir caused by fracturing fluid getting in during large-volume fracturing of tight oil ...
Qun LEI   +7 more
doaj   +1 more source

Upper Paleozoic total petroleum system and geological model of natural gas enrichment in Ordos Basin, NW China

open access: yesPetroleum Exploration and Development, 2023
Based on the analysis of Upper Paleozoic source rocks, source-reservoir-caprock assemblage, and gas accumulation characteristics in the Ordos Basin, the gas accumulation geological model of total petroleum system is determined.
Fujie JIANG   +10 more
doaj   +1 more source

Bondi flow from a slowly rotating hot atmosphere [PDF]

open access: yes, 2011
A supermassive black hole in the nucleus of an elliptical galaxy at the centre of a cool-core group or cluster of galaxies is immersed in hot gas. Bondi accretion should occur at a rate determined by the properties of the gas at the Bondi radius and the ...
Abramowicz   +67 more
core   +3 more sources

Reservoir and development characteristics of the Da'anzhai tight oil in Sichuan Basin, SW China

open access: yesPetroleum Research, 2019
The oil in the Jurassic Da'anzhai reservoirs in the Sichuan Basin is unconventional tight oil, which accumulated in or near source rocks, and did not experience extensive migration in a large-scale long distance. The first submember, second submember and
Yongjun Wang   +4 more
doaj   +1 more source

Mapping the Two-Component Atomic Fermi Gas to the Nuclear Shell-Model [PDF]

open access: yes, 2014
The physics of a two-component cold fermi gas is now frequently addressed in laboratories. Usually this is done for large samples of tens to hundreds of thousands of particles.
A. Bohr   +79 more
core   +2 more sources

Morphological and petrophysical evaluation of tight gas resources and energy production in Pakistan

open access: yesMehran University Research Journal of Engineering and Technology, 2022
Tight gas is a highly potential source of energy that can meet the energy deficit in Pakistan. The production of gas from conventional gas reserves are continuously declining in a massive manner and increasing demand of hydrocarbons as an energy source ...
Aftab Ahmed Mahesar   +3 more
doaj   +1 more source

Achievements and future work of oil and gas production engineering of CNPC

open access: yesPetroleum Exploration and Development, 2019
This paper summarizes the latest achievements and technological progress in oil and gas production engineering of China National Petroleum Corporation (CNPC) and discusses the main four challenges faced: developing low quality resource at low oil price ...
Qun LEI   +6 more
doaj   +1 more source

Development status and prospect of tight sandstone gas in China

open access: yesNatural Gas Industry B, 2022
As one of the important types of unconventional gas, tight gas is widely distributed in various major petroliferous basins in the world. The breakthrough of reservoir reconstruction technology and the reduction of development cost promote the scale and ...
Ailin Jia   +5 more
doaj   +1 more source

Understanding chemical evolution in resolved galaxies -- I The local star fraction-metallicity relation [PDF]

open access: yes, 2015
This work studies the relation between gas-phase oxygen abundance and stellar-to-gas fraction in nearby galaxies. We first derive the theoretical prediction, and argue that this relation is fundamental, in the sense that it must be verified regardless of
Ascasibar, Y.   +5 more
core   +2 more sources

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