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Hydrogen from Depleted/Depleting Hydrocarbon Reservoirs: A Reservoir Engineering Perspective

open access: yesApplied Sciences
In today’s industry, H2 is mostly produced from fossil fuels such as natural gas (NG), oil, and coal through various processes. However, all these processes produce both carbon dioxide (CO2) as well as H2, making them questionable in terms of climate ...
Hakan Alkan   +5 more
doaj   +1 more source

Predictive modelling of the impact of silica nanoparticles on fluid loss of water based drilling mud [PDF]

open access: yes, 2018
Research into the use of nanoparticles for drilling mud formulation is gaining momentum but a key challenge involves predicting the effect of nanoparticles on the properties of the modified mud.
Afolabi, Richard Oyekunle   +2 more
core   +1 more source

Evaluation and Field Application of a Rheology Modifier for Non-aqueous Based Drilling Fluids

open access: yesZuanjingye yu wanjingye
A rheology modifier for non-aqueous based drilling fluids was prepared in this work. Based on the drilling fluid systems of China Oilfield Services Co., LTD., the influence of dosage, aging temperature and aging time on rheology and electrical stability ...
Liangliang REN   +5 more
doaj   +1 more source

Super-amphiphobic, strong self-cleaning and high-efficiency water-based drilling fluids

open access: yesPetroleum Exploration and Development, 2020
Based on the amphiphobic theory on underground rock surface, a super-amphiphobic agent is developed and evaluated which can form nano-micro papilla structure on rock, filter cake and metal surface, reduce surface free energy, prevent collapse, protect ...
Guancheng JIANG   +4 more
doaj   +1 more source

Invasion Analysis of Oil-Based Drilling Fluid Based on NMR Experiment

open access: yesCejing jishu, 2023
In order to clarify the intrusion characteristics of deep and ultra-deep oil-based drilling fluids in the southern margin of Junggar basin and its influence on nuclear magnetic resonance (NMR) logging, NMR experiments are conducted to analyze the ...
LIN Jingqi   +5 more
doaj   +1 more source

Preliminary test on modified clays for seawater resistant drilling fluids [PDF]

open access: yes, 2015
The quality of a drilling fluid declines in salt water conditions. An engineered clay (HYPER clay) was developed for geosynthetic clay liners with enhanced resistance to aggressive conditions.
Bezuijen, Adam   +3 more
core  

Modelling of deep wells thermal modes [PDF]

open access: yes, 2019
Purpose. Investigation of various heat-exchange conditions influence of the tower liquid on the deep wells thermal conditions. Methods. Methods of heat-exchange processes mathematical modeling are used.
Blyuss, B   +4 more
core   +1 more source

Effect of Foot Orthoses on Midfoot Pain and the Volume of Bone Marrow Lesions in the Midfoot: A Randomized Mechanism of Action Study

open access: yesArthritis Care &Research, EarlyView.
Objective Foot orthoses are thought to improve pain by potentially modifying internal mechanical forces. To test this, we explored whether foot orthoses can modify patterns of bone marrow lesions (BMLs) in people with midfoot pain. Methods Forty‐two people were recruited with midfoot pain, and magnetic resonance imaging–confirmed midfoot BMLs ...
Jill Halstead   +4 more
wiley   +1 more source

Low Thermal Conductivity Cement Slurry for Geothermal Well Cementing

open access: yesZuanjingye yu wanjingye
In geothermal energy development, the heat loss of cement sheath plays a key role in affecting heat extraction efficiency. In this study, using class G cement as the base slurry, and hollow glass microspheres and modified palygorskite fiber as composite ...
Donghong DANG   +5 more
doaj   +1 more source

How to recognise a kick : A cognitive task analysis of drillers’ situation awareness during well operations [PDF]

open access: yes, 2016
Acknowledgements This article is based on a doctoral research project of the first author which was sponsored by an international drilling rig operator.
Cleland, J., Flin, R., Roberts, R.
core   +2 more sources

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