Results 1 to 10 of about 114,740 (266)

Formation water evaporation induced salt precipitation and its effect on gas production in high temperature natural gas reservoirs

open access: yesPetroleum Exploration and Development, 2016
To study the pattern of formation water evaporation and salt precipitation, based on the oil-gas-water three phase thermodynamic equilibrium, the principle of salt dissolution/precipitation, and results of formation water evaporation and salt ...
Shaoran Ren, Bo Ren, Guodong Cui
exaly   +3 more sources

Characteristic temperatures of saline soil during freezing

open access: yesYantu gongcheng xuebao, 2021
The characteristic temperatures appearing in freezing process of saline soil include the freezing temperature and the supercooling temperature. The former is the point at which chemical potentials of ice and liquid achieve equilibrium, and the latter is ...
YING Sai 1, 2, ZHOU Feng-xi 1, WEN Tao 2, CAO Ya-peng 3
doaj   +1 more source

Direct Visualization of Nanoscale Salt Precipitation and Dissolution Dynamics during CO2 Injection

open access: yesEnergies, 2022
CO2 injection to enhance shale oil recovery provides a win-win solution to meet the global fuel shortage and realize ultimate carbon neutrality. When shale reservoirs contain high salinity water, CO2 injection can result in salt precipitation to block ...
Xinling Hu   +10 more
doaj   +1 more source

Numerical simulation of CO2 sequestration in sandstone aquifers with feedback effect of salt precipitation: A case study of Ordos Basin

open access: yes地质科技通报, 2022
Salt precipitation is an important issue for CO2 sequestration in deep aquifers.At present, most numerical simulations ignore the feedback effect of the changes in the porosity and permeability caused by the salt precipitation on fluid flow.In this paper,
Zhihao Gao, Ruirui Zhao, Jianmei Cheng
doaj   +1 more source

Precipitation of Inorganic Salts in Mitochondrial Matrix [PDF]

open access: yesMembranes, 2020
In the mitochondrial matrix, there are insoluble, osmotically inactive complexes that maintain a constant pH and calcium concentration. In the present paper, we examine the properties of insoluble calcium and magnesium salts, such as phosphates, carbonates and polyphosphates, which might play this role.
Jerzy J. Jasielec   +3 more
openaire   +3 more sources

Some characteristics of protein precipitation by salts [PDF]

open access: yesBiotechnology and Bioengineering, 1992
AbstractThe solubilities of lysozyme, α‐chymotrypsin and bovine serum albumin (BSA) were studied in aqueous electrolyte solution as a function of ionic strength, pH, the chemical nature of salt, and initial protein concentration. Compositions were measured for both the supernatant phase and the precipitate phase at 25°C.
Shih, Y.C.   +2 more
openaire   +3 more sources

Investigation of salt precipitation dynamic in porous media by X-ray and Neutron dual-modality imaging

open access: yesScience and Technology for Energy Transition, 2023
In this work, a new dual modality monitoring technique is presented to demonstrate its interest to investigate the salt precipitation dynamics induced by gas flow-through drying. It consists of imaging simultaneously a core flood using both Neutron and X-
Mascle Matthieu   +6 more
doaj   +1 more source

Experimental Study of Evaporation Flux, Salt Precipitation, and Surface Temperature on Homogeneous and Heterogeneous Porous Media

open access: yesAdvances in Civil Engineering, 2022
Salt precipitation in porous media is widespread, which has garnered great research attention. However, the mechanisms governing the salt precipitation, water flux, and surface temperature changes in homogeneous and heterogeneous porous media remain ...
Xinhu Li, Min Guo
doaj   +1 more source

Effects of evolving salt precipitation on the evaporation and temperature of sandy soil with a fixed groundwater table

open access: yesVadose Zone Journal, 2021
The effects of salt precipitation on water and heat transport in soil have garnered considerable attention. However, salt precipitation growth on the soil surface and its influence on soil evaporation and temperature under a fixed groundwater table are ...
Xinhu Li, Fengzhi Shi
doaj   +1 more source

Prediction of barium sulfate precipitation in dynamic tube blocking tests and its inhibition for waterflooding application using response surface methodology

open access: yesJournal of Petroleum Exploration and Production Technology, 2023
Scale precipitation is one of the major problems in the petroleum industry during waterflooding. The possibility of salt formation and precipitation should be monitored and analyzed under dynamic conditions to improve production performance.
Azizollah Khormali, Soroush Ahmadi
doaj   +1 more source

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