Integrated Dielectric and NMR Measurements in a Solution Workflow to Meet Fluid Typing Challenges in Clastic Reservoirs Drilled Using Synthetic Oil-Based Mud: A Case Study from the Malay Basin

2014 ◽  
Author(s):  
Ko Ko Kyi ◽  
Nur Athirah Dahlan ◽  
John Andrew Quirein ◽  
Ehab Nejm ◽  
Dipanka Behari Roy ◽  
...  
Keyword(s):  
Synthetic Oil ◽  
Clastic Reservoirs

Integrated sedimentological and petrophysical characterization for clastic reservoirs: A case study from New Zealand

2021 ◽  
Vol 88 ◽  
pp. 103797
Author(s):  
Ahmed A. Radwan ◽  
Bassem S. Nabawy ◽  
Ahmed Abdelmaksoud ◽  
Aref Lashin
Keyword(s):  
New Zealand ◽  
Clastic Reservoirs

scholarly journals Electrochemical assessment of pigment-binding-pigment interactions in oil paint deterioration: a case study on indigo and Prussian blue

2020 ◽  
Author(s):  
Antonio Doménech-Carbó ◽  
María Teresa Doménech-Carbó ◽  
Laura Osete-Cortina ◽  
Margherita Donnici ◽  
Nuria Guasch-Ferré ◽  
...  
Keyword(s):  
Prussian Blue ◽  
Uv Radiation ◽  
Paint Film ◽  
Solar Light ◽  
Radical Scavenger ◽  
Binding Media ◽  
Synthetic Oil

Abstract The degradation of synthetic oil paint film specimens containing indigo and Prussian blue pigments and pictorial samples from the Sant Francesc de Paula painting from the museum of Cardedeu (Catalonia, Spain) has been studied by voltammetry of immobilized particles. This technique, combined with SEM-EDX, ATR-FTIR and CG-MS techniques permits to propose a dual scheme for the degradation of the pigments when submitted to natural, UV and UV solar light aging. Under ‘ordinary’ conditions, Prussian blue acts as a radical scavenger moderating the production of ROS produced in the binding media by the action of UV radiation, resulting in the formation of Berlin green and indigo adducts with radicals. In the case of localized areas of the Sant Francesc de Paula paint, strong degradation occurs where Prussian blue acts as a promoter of the indigo oxidation to isatin, thus resulting in a considerable chromatic shift.

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