Results 51 to 60 of about 1,580,125 (292)

Preparation, physical-chemical characterisation and cytocompatibility of calcium carbonate cements [PDF]

, 2006
The feasibility of calcium carbonate cements involving the recrystallisation of metastable calcium carbonate varieties has been demonstrated. Calcium carbonate cement compositions presented in this paper can be prepared straightforwardly by simply mixing
Bareille, Reine, Combes, Christèle, Miao, Baoji, Rey, Christian   +3 more
core   +1 more source

Parallel Numerical Simulation of 3D Anisotropic Elastic Wave Equations with Sparse Matrix Based on Compact Staggered Finite Difference

Algorithms
Numerical simulation of elastic waves in anisotropic media is a fundamental technique for seismic exploration and the characterization of subsurface geological structures.
Lin Jiang, Huan Wen, Ming Wang, Changjian Zhang, Yong Wang   +4 more
doaj   +1 more source

Constraining hydrocarbon migration and accumulation by two-dimensional numerical simulation: Ordovician carbonate reservoirs of the Daniudi Area, Ordos Basin

Energy Exploration & Exploitation, 2023
The various types of reservoir space in carbonate reservoirs make the process of hydrocarbon migration and accumulation very complex. How to quantitatively characterize the characteristics of hydrocarbon migration and accumulation in carbonate reservoirs
Jingdong Liu, Shaohua Wang, Haijian Jiang, Zhongliang Ma, Xuqing Fang   +4 more
doaj   +1 more source

Facies analysis and sequence-stratigraphic control on reservoir architecture: Example from mixed carbonate/siliciclastic sediments of Raha Formation, Gulf of Suez, Egypt

Marine and Petroleum Geology, 2021
Mixed carbonate-siliciclastic systems are complex, and their development can sometimes be difficult to understand, given the various responses to each sub-environment to specific forcing, such as variation in sediment supply, climatic conditions, or ...
A. Shehata, A. Kassem, H. Brooks, V. Zuchuat, Ahmed E. Radwan   +4 more
semanticscholar   +1 more source

Optimization of Reservoir Waterflooding [PDF]

, 2014
Waterflooding is a common type of oil recovery techniques where water is pumped into the reservoir for increased productivity. Reservoir states change with time, as such, different injection and production settings will be required to lead the process
Grema, Alhaji Shehu
core   +6 more sources

Halophilic Archaea Mediate the Formation of Proto-Dolomite in Solutions With Various Sulfate Concentrations and Salinities

Frontiers in Microbiology, 2019
In the past several decades, sulfate concentration and salinity have been considered to be the two essential hydrochemical factors in the formation of dolomite, yet arguments against this hypothesis have existed simultaneously.
Xuan Qiu, Yancheng Yao, Hongmei Wang, Anjiang Shen, Jie Zhang   +4 more
doaj   +1 more source

Evaluation of opening of fractures in the Logovskoye carbonate reservoir, Perm Krai, Russia

Petroleum Research, 2020
The development of naturally fractured carbonate reservoirs is extremely challenging. Such reservoirs have a dual pore structure consisting of low-permeable matrix with large pore volume and high-permeable fractures constituting main paths for fluid flow.
Dmitry Martyushev, A. Yurikov
semanticscholar   +1 more source

Seismic expression of miocene carbonate platform and reservoir characterization through geophysical approach: application in central Luconia, offshore Malaysia

Journal of Petroleum Exploration and Production, 2021
A substantial proportion of proven oil and gas reserves of the world is contained in the carbonate reservoir. It is estimated that about 60% of the world’s oil and 40% of gas reserves are confined in carbonate reservoirs.
Y. Bashir, M. Faisal, A. Biswas, A. Babasafari, S. Ali, Q. Imran, N. Siddiqui, M. Ehsan   +7 more
semanticscholar   +1 more source

Epigenetic reprogramming of lineage switching in cancer

FEBS Letters, EarlyView.
Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı, Burcu Akman, Ezgi Bağırsakçı, Nese Atabey, Serap Erkek‐Ozhan   +4 more
wiley   +1 more source

Identification and characterization of microfractures in carbonate samples

Petroleum Exploration and Development, 2022
Based on the rock typing method of pore geometry and structure (PGS), rock samples from carbonate reservoir A and carbonate reservoir B were classified using data of routine and special core analysis and thin section images, and microfractures in the ...
Pudji PERMADI, Taufan MARHAENDRAJANA, Sesilia NANDYA, Kharisma IDEA   +3 more
doaj   +1 more source