Results 31 to 40 of about 30,400 (205)

Pore Structure Differentiation between Deltaic and Epicontinental Tight Sandstones of the Upper Paleozoic in the Eastern Linxing Area, Ordos Basin, China

open access: yesGeofluids, 2021
Research on tight gas reservoirs in the eastern margin of the Ordos Basin, China, has recently become a hot spot. This paper mainly studies the reservoir characteristics of tight sandstone in the north-central area close to the provenance in eastern ...
Jimei Deng   +6 more
doaj   +1 more source

Micro-scale pore-throat distributions in tight sandstone reservoirs and its constrain to movable fluid

open access: yesShiyou shiyan dizhi, 2021
To understand the constrains of multi-scale microscopic pore-throat distributions to the movable fluid in tight sandstone reservoirs, high-pressure mercury injection and nuclear magnetic resonance (NMR) were employed to obtain the distribution ...
Hongli ZHONG   +4 more
doaj   +1 more source

Formation condition of deep gas reservoirs in tight sandstones in Kuqa Foreland Basin

open access: yesPetroleum Research, 2018
Due to the high expense of deep oil and gas exploration, prediction of gas-bearing properties before drilling is crucial for deep gas reservoir of tight sandstone. Deep tight sandstone gas fields in Kuqa Foreland Basin are characterized by high abundance,
Xuesong Lu   +6 more
doaj   +1 more source

Influence of Microcracks on Stress Sensitivity in Tight Sandstone [PDF]

open access: yesLithosphere, 2021
Abstract Stress sensitivity occurs throughout the reservoir development process, especially in the study of low permeability tight reservoir, considering the influence of stress sensitivity is particularly important. When studying stress sensitivity, the current main experimental methods are variable confining pressure and variable fluid
Zhenkai Wu   +8 more
openaire   +1 more source

Two-scale analysis of a tight gas sandstone

open access: yesPhysical Review E, 2016
Tight gas sandstones are low porosity media, with a very small permeability (i.e., below 1 mD). Their porosity is below 10%, and it is mainly composed of fine noncemented microcracks, which are present between neighboring quartz grains. While empirical models of permeability are available, their predictions, which do not compare well with macroscopic ...
Song, Yang   +6 more
openaire   +3 more sources

Relating pore fabric geometry to acoustic and permeability anisotropy in Crab Orchard Sandstone: A laboratory study using magnetic ferrofluid [PDF]

open access: yes, 2003
Pore fabric anisotropy is a common feature of many sedimentary rocks. In this paper we report results from a comparative study on the anisotropy of a porous sandstone (Crab Orchard) using anisotropy of magnetic susceptibility (AMS), acoustic wave ...
Benson, PM, Meredith, PG, Platzman, ES
core   +1 more source

Analysis of pore throat characteristics of tight sandstone reservoirs

open access: yesOpen Geosciences, 2020
The characterization of pore throat structure in tight reservoirs is the basis for the effective development of tight oil. In order to effectively characterize the pore -throat structure of tight sandstone in E Basin, China, this study used high-pressure
Zhao Xinli   +4 more
doaj   +1 more source

Formation mechanism of tight sandstone gas in areas of low hydrocarbon generation intensity: A case study of the Upper Paleozoic in north Tianhuan depression in Ordos Basin, NW China

open access: yesPetroleum Exploration and Development, 2018
The Upper Paleozoic in the north part of Tianhuan depression in the Ordos Basin, NW China has lower hydrocarbon generation intensity and complex gas-water relationship, the main factors controlling the formation of tight sandstone gas and the ...
Fudong ZHANG   +10 more
doaj   +1 more source

Impacts of Mixed-Wettability on Brine Drainage and Supercritical CO2 Storage Efficiency in a 2.5-D Heterogeneous Micromodel [PDF]

open access: yes, 2020
Geological carbon storage (GCS) involves unstable drainage processes, the formation of patterns in a morphologically unstable interface between two fluids in a porous medium during drainage.
Chang, C   +4 more
core   +5 more sources

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