INJECTION OF LIQUID CARBON DIOXIDE INTO A BED PARTIALLY SATURATED WITH METHANE HYDRATE

2016 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Methane Hydrate ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide ◽  
Partially Saturated

The theory of injection of liquid carbon dioxide in formation, saturated system “hydrate of methane–methane” in the mode of formation of the intermediate melt zone

2016 ◽  
Vol 11 (2) ◽  
pp. 171-180 ◽  
Author(s):  
V.Sh. Shagapov ◽  
M.K. Khasanov ◽  
R.S. Bayramgulova
Keyword(s):  
Carbon Dioxide ◽  
Methane Hydrate ◽  
Liquid Carbon ◽  
Initial State ◽  
Liquid Carbon Dioxide ◽  
Infinite Layer ◽  
Partially Saturated ◽  
Melted Zone ◽  
Hydrate Saturation ◽  
Decomposition Of Methane

The scheme and the corresponding theoretical model of process of methane replacement by liquid carbon dioxide at his injection in a gas hydrate layer are offered. The flat one-dimensional automodel solution corresponding to injection of carbon dioxide in semi-infinite layer through flat border is constructed. It is fixed that such solution can contain three characteristic zones in general case: the far zone, where there is a methane filtration in the porous medium which is partially saturated by methane hydrate in the absence of phase transitions; the melted zone of products of decomposition of methane hydrate (water and methane) can be formed in the intermediate zone (this zone is formed because of heating owing to injection of warm carbon dioxide); the near zone where there is a filtration of liquid carbon dioxide in the layer which is partially saturated by hydrate of carbon dioxide. The analysis of influence of parameters of layer, his initial state (temperature, pressure and hydrate saturation) and the parameters of the injected dioxide of carbon on the various modes of filtration is conducted.

The replacement of methane hydrate in the reservoir by injection into the liquid carbon dioxide

2017 ◽  
Vol 12 (2) ◽  
pp. 206-213 ◽  
Author(s):  
O.F. Shepelkevich
Keyword(s):  
Carbon Dioxide ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide ◽  
Free Gas ◽  
Methane Gas ◽  
Hydrate Reservoir ◽  
Piston Displacement ◽  
Hydrate Saturation

The paper deals with the process of injecting liquid carbon dioxide into a hydrate reservoir. It is shown that the process of methane replacement in a hydrate reservoir by injecting liquid carbon dioxide into it can consist of the following steps: piston displacement of free gas from the pores; replacement of methane with liquid carbon dioxide, its dissolution and leaching from the formation; completion of hydrate formation and leaching of the remaining methane gas from the hydrate reservoir. We have presented the distributions of pressure, density, hydrate saturation and temperature at different times.

Permeability enhancement and porosity change of coal by liquid carbon dioxide phase change fracturing

2021 ◽  
Vol 287 ◽  
pp. 106106
Author(s):  
Xianfeng Liu ◽  
Baisheng Nie ◽  
Kunyong Guo ◽  
Chengpeng Zhang ◽  
Zepeng Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Phase Change ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide ◽  
Porosity Change ◽  
Permeability Enhancement

Ultrasonic velocity in liquid carbon dioxide

Physica ◽  
1973 ◽  
Vol 63 (1) ◽  
pp. 154-162 ◽  
Author(s):  
W. Pecceu ◽  
W. Van Dael
Keyword(s):  
Carbon Dioxide ◽  
Ultrasonic Velocity ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide

scholarly journals Submarine venting of liquid carbon dioxide on a Mariana Arc volcano

2006 ◽  
Vol 7 (8) ◽  
pp. n/a-n/a ◽  
Author(s):  
John Lupton ◽  
David Butterfield ◽  
Marvin Lilley ◽  
Leigh Evans ◽  
Ko-ichi Nakamura ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide ◽  
Mariana Arc ◽  
Arc Volcano

Complex Formation of Semifluorinated γ-Cyclodextrin and Surfactants in Liquid Carbon Dioxide

2006 ◽  
Vol 45 (10) ◽  
pp. 3434-3437 ◽  
Author(s):  
Ha Soo Hwang ◽  
Min Young Lee ◽  
Yeon Tae Jeong ◽  
Seong-Soo Hong ◽  
Yeong-Soon Gal ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Complex Formation ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide

scholarly journals Liquid Carbon Dioxide Use in the Extraction of Extra Virgin Olive Oil From Olive Paste

2014 ◽  
Vol 3 (4) ◽  
pp. 119 ◽  
Author(s):  
Raffaele Romano ◽  
Nadia Manzo ◽  
Immacolata Montefusco ◽  
Annalisa Romano ◽  
Antonello Santini
Keyword(s):  
Carbon Dioxide ◽  
Fatty Acids ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Liquid Carbon ◽  
Liquid Carbon Dioxide ◽  
A Value ◽  
Olive Mill Waste Water

<p>In this study the use of liquid carbon dioxide, CO<sub>2</sub>, for extraction of oil from olive paste (<em>Peranzana cultivar</em>)<strong> </strong>were examined and extracted oil was compared with oils obtained by centrifugation, pressure and use of chemical solvent.</p> <p>It is well known that the use of CO<sub>2</sub> has many advantages: miscibility with a wide range of molecules, food safety, non-flammability, absence of residues in the extract, possibility of total solvent recovery and no production of olive mill waste water that are highly polluting for the environment and require expansive disposal.</p> <p>Samples were subjected to the following analyses: determination of Free Fatty Acids (FFA), Peroxides Value (PV), Spectrophotometric Indices, Fatty Acids Composition (FA), determination of biophenols content and determination of Volatile Organic Compounds (VOCs). All samples showed FFA, PV and ?K values within the limits established by law for extra-virgin olive oil. The use of CO<sub>2</sub> did not catalyze hydrolysis, oxidation and condensation of double bonds. Centrifuged oils and oils extracted with carbon dioxide presented the lowest PV and FFA values. Extraction with liquid carbon dioxide contributed to an increasing of phenolic content with a value of 270.5 mg/kg, a value twice that of the oils extracted with centrifugation (135.3 mg/kg) or pressure methods (173.2 mg/kg). Oil extracted with liquid carbon dioxide showed the greatest amount of t-2-octenal and t-2-heptenal, giving herbaceous and pungent notes. Moreover the presence of aromatic compounds such as limonene, generally absent in olive oils, was only detected in the sample extracted with liquid carbon dioxide.</p>

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