Results 11 to 20 of about 165,800 (306)

The chromian marbles of Kittilä, Finnish Lapland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1978
The volcano-sedimentary rock association at Kittilä is characterized in many places by the presence of green-colored fuchsite-bearing ferroan dolomite-quartz rocks, locally called chromian marbles.
Y. Pekkala, K. Puustinen
doaj   +1 more source

The leakoff in acid fracturing kinetics control mechanism

open access: yesEnergy Reports, 2022
To study the compacted carbonate leakoff mechanism during acid fracturing process, we introduced a new characterization method. Realized acid reaction violently with carbonate reservoirs, concentration within the natural crack, larger pores or natural ...
Yuxia Wang, Qinghua Shang, Heng Wang
doaj   +1 more source

Geological and geochemical characteristics and genesis of carbonate rocks in a certain area [PDF]

open access: yesE3S Web of Conferences, 2022
Carbonate rock is a general term for the rock composed of carbonate minerals, which is mainly composed of carbonate sediments, with calcite (limestone) and dolomite (dolomite) as the main forms.
Zhang Tong
doaj   +1 more source

X-ray Micro CT Based Characterization of Pore-Throat Network for Marine Carbonates from South China Sea

open access: yesApplied Sciences, 2022
The pore-throat network of rock exerts a vital influence on the permeability and mechanical properties of the rock. Resorting to X-ray micro-CT scanning, the present work investigates the pore-throat structure of marine biogenic carbonate samples from ...
Haifeng Liu, Chenghao Ma, Changqi Zhu
doaj   +1 more source

Effects of atmospheric CO2 consumption on rock weathering in the Pearl River basin, China [PDF]

open access: yesE3S Web of Conferences, 2019
Atmospheric CO2 is absorbed and dissolved in water via karst processes not only in carbonate rock areas, but in all rock areas of the earth. The chemical and isotopic analysis results, particularly of strontium, for water samples collected from eleven ...
Qin Xiaoqun   +4 more
doaj   +1 more source

Reservoir characteristics and forming conditions for the Middle Triassic Leikoupo Formation in the western Sichuan Basin, China

open access: yesJournal of Natural Gas Geoscience, 2019
In the past few years, petroleum exploration in the Leikoupo Formation in the western Sichuan Basin of China has obtained fruitful achievements, but composite research on the carbonate rock reservoir and its control factors are lagging behind, which ...
Han Tian   +4 more
doaj   +1 more source

Time-Dependent Physicochemical Changes of Carbonate Surfaces from SmartWater (Diluted Seawater) Flooding Processes for Improved Oil Recovery. [PDF]

open access: yes, 2018
Over the past few decades, field- and laboratory-scale studies have shown enhancements in oil recovery when reservoirs, which contain high-salinity formation water (FW), are waterflooded with modified-salinity salt water (widely referred to as the low ...
Alotaibi, Mohammed B   +12 more
core   +3 more sources

Long-time evolution of sequestered CO$_2$ in porous media [PDF]

open access: yes, 2014
CO$_2$ sequestration in subsurface reservoirs is important for limiting atmospheric CO$_2$ concentrations. However, a complete physical picture able to predict the structure developing within the porous medium is lacking.
Cohen, Yossi, Rothman, Daniel H.
core   +2 more sources

Effects of rock tablet lithology difference on estimation of rock dissolution rate and carbon flux

open access: yesCarsologica Sinica, 2022
Under the control of subtropical humid monsoon climate, karstification is very strong in the karst area of southern China. At the same time, a lot of researches indicate that the carbon sink formed by karstification in southern China may be an important ...
Xiaoqin ZHANG   +5 more
doaj   +1 more source

Comparison of γ-ray spectrometry and ICP-MS methods for measuring radioactive heat-producing elements of rocks: a case study on borehole samples from the Sichuan Basin, China [PDF]

open access: yes, 2017
We compared the consistency of γ-ray spectrometry and inductively coupled plasma mass spectrometry by analyzing measurement results of the radioactive heat-producing elements U, Th, and K from borehole samples.
Hu, Shengbiao   +3 more
core   +1 more source

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