Numerical and Experimental Investigation of CO2 Hydrates on Injectivity Decline

The increasing levels of carbon dioxide (CO2) emissions in the atmosphere are significantly contributing to climate change. One approach to mitigate this issue is through Carbon Capture and Storage (CCS) techniques, which involve storing CO2 emissions underground. Depleted reservoirs are a potential option for subsurface CO2 storage. However, a...

The formation times of the Galilean moons: A numerical simulation of short-lived radionuclide heating in circumplanetary planetesimals formed by the streaming instability

Context: The Galilean moons are expected to have formed in a circumplanetary disk (CPD) and exhibit a characteristic compositional gradient: an increasing ice mass fraction with increasing distance from Jupiter. Ice released from hydrated silicates formed inside planetesimals might be the cause of this compositional gradient. One of the...

Dielectric spectroscopy for hydration monitoring, from application to portable sensors

Due to the earth’s population growth and the increased living age of a person, more and more people could deal with medical problems. Early detection of health related problems in both healthy and people with medical problems, will catch problems early and prevent the need for more costly procedures. One of these medical problems is concerning...

Predictive Modelling of Hydrate Formation and Dissociation

Natural gas hydrates are often considered as a hazard in hydrocarbon production and pipeline transport, but are also recognized as a potential energy resource. Naturally occurring hydrate deposits exist under suitable conditions of low temperature and high pressure, typically in shallow marine sediments and in and below the permafrost, and may...

Near wellbore effects induced by CO₂ injection and the influence on injectivity in depleted gas reservoirs

Sequestration of carbon dioxide (CO₂) in depleted gas reservoirs is an attractive choice, especially in The Netherlands, to reduce CO₂ emissions into the atmosphere. Injection of CO₂ in the subsurface geological formations can distort local thermal, chemical and geomechanical equilibria. As such, it results in...

Air-conditioning with TBAB clathrate hydrate slurry as secondary loop refrigerant

The demand of energy increases steadily due to the growing global population and the increasing living standard of emerging markets. The increasing energy demand and reduction of greenhouse gasses require a significant increase of renewable energy sources and energy efficiency of buildings. Also, the increasing degree of renewable energy sources...

Determination of the CO2 gas consumption rate due to dissolution and hydrate formation in porous media

For a long time gas hydrates were considered to be a hindrance for the natural gas and oil industry. However, since natural gas hydrates deposits were discovered in 1967 the conception of natural gas hydrates as an important energy resource is well accepted. Latest estimations indicate that the amount of natural gas stored in hydrate form is...

CO2 hydrate formation in coil heat exchangers: An experimental and theoretical study

Production of CO2 hydrates for direct cooling of meat. A model is developed to describe hydrate formation (including a thermodynamic model and flash model). An experimental set-up is developed to produce hydrates.

Separation of a CO2+CH4 gas mixture by gas hydrate formation: An experimental study

The purpose of this study is to gather information about the gas hydrate formation when an equimolar gas mixture of CO2 and CH4 is injected on top of a liquid aqueous phase at 275.85 K and various pressures ranging between 2.5 and 6.0 MPa . With these experiments it can be determined if there is preferred gas hydrate formation with CO2 or CH4....

Natural Gas Production and CO2 Sequestration in a Class 2 Hydrate Accumulation: A Numerical Simulation Study

Large amounts of natural gas hydrates have been found in sub-oceanic deposits and beneath permafrost regions. It has the potential to become a major hydrocarbon resource in the near future. Research is needed to evaluate the production possibilities of this new resource. CH4 hydrate dissociation and production is an endothermic process and a...

Methane Production from Gas-Hydrate Using Depressurization Method

Gas hydrates are significant resource of natural gas existing both on-shore buried under the permafrost and off-shore buried under oceanic and deep lake sediments. Earlier studies have demonstrated that large volumes of gas can be produced from gas hydrate accumulations by means of depressurization-induced dissociation using vertical wells. In...

Economic Analysis of a Marine Gas Hydrate Operation from the sea floor and its sediments: The case of hydrate bearing sediments in the Atwater Valley

Natural gas is an important energy source. Recently the world-wide consumption is rapidly increasing due to the growing demand caused by industrial growth and also by shifting to cleaner energy source driven environmental concerns. To satisfy demand also in the future, it is necessary to look for alternatives sources of supply of energy. An...