The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform
W U Nengyou - One of the best experts on this subject based on the ideXlab platform.
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effect of Nonhydrocarbon Gas on thickness of hydrate stability zone under deep water in qiongdongnan basin
Journal of Tropical Oceanography, 2012Co-Authors: W U NengyouAbstract:Natural Gas hydrate is a hot spot of study at present,which may play a very important role in energy,environment and disasters.According to actual geological conditions in the Qiongdongnan Basin,the influence of Nonhydrocarbon Gas to the thickness of hydrate stability zone(HSZ) is numerically studied for component Gases at various depths,combined with the salinity of ocean waters and geothermal gradient in the deep-water area within the basin.The results show that the thickness of HSZ in the Qiongdongnan Basin increases with water depth,and that CO2 in mixed Gas of CH4+ CO2 alters the hydrate stability.The effect of CO2 is not only related to CO2 content but also to water depth.The thickness of HSZ increases at a shallow depth and then falls as CO2 content increases for water depth less than or equal to 1.3 km.When water depth is more than or equal to 1.55 km,input of CO2 decreases the HSZ thickness,and the influence enhances as the CO2 content grows.The results also indicate that N2 in mixed Gas of CH4+N2decreases the thickness of the HSZ.A 1% increase of N2 in the mixture can lead to 4m reduction in the thickness of the HSZ.
Xiao Hu - One of the best experts on this subject based on the ideXlab platform.
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The molecular and carbon isotopic constrains on origin and storage of Longmaxi Formation shale Gas in Changning area, Sichuan Basin, China
Interpretation, 2015Co-Authors: Qingyan Tang, Mingjie Zhang, Zhe Song, Zhongping Li, Xiao HuAbstract:ABSTRACTWe have developed a vacuum-crushing method for the extraction of Gases stored in shale for the determination of Gas yield, chemical composition, and carbon isotopic composition by online Gas-chromatography and mass spectrometry. Analysis of the evacuation and parallel experiments showed low standard deviation and good reproducibility. This approach significantly improved the detection limits for trace-Gas analysis in shale and measured multiple Nonhydrocarbon Gas components in a single run. We analyzed the chemical and carbon isotopic compositions of the Gases released by one-step vacuum crushing from nineteen samples of organic-rich Longmaxi Formation (Fm.) shale in Changning outcrop, Sichuan Basin, China, and we studied the main controls on Gas chemistry of retained Gas in the Longmaxi Shale. The results showed that the crushed Gas is high in N2 and CO2 but low in CH4. The crushed Gas has obviously lower C1/CO2 ratios than the Gas produced from the Longmaxi Fm. after hydraulic fracturing; it was...
Qingyan Tang - One of the best experts on this subject based on the ideXlab platform.
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The molecular and carbon isotopic constrains on origin and storage of Longmaxi Formation shale Gas in Changning area, Sichuan Basin, China
Interpretation, 2015Co-Authors: Qingyan Tang, Mingjie Zhang, Zhe Song, Zhongping Li, Xiao HuAbstract:ABSTRACTWe have developed a vacuum-crushing method for the extraction of Gases stored in shale for the determination of Gas yield, chemical composition, and carbon isotopic composition by online Gas-chromatography and mass spectrometry. Analysis of the evacuation and parallel experiments showed low standard deviation and good reproducibility. This approach significantly improved the detection limits for trace-Gas analysis in shale and measured multiple Nonhydrocarbon Gas components in a single run. We analyzed the chemical and carbon isotopic compositions of the Gases released by one-step vacuum crushing from nineteen samples of organic-rich Longmaxi Formation (Fm.) shale in Changning outcrop, Sichuan Basin, China, and we studied the main controls on Gas chemistry of retained Gas in the Longmaxi Shale. The results showed that the crushed Gas is high in N2 and CO2 but low in CH4. The crushed Gas has obviously lower C1/CO2 ratios than the Gas produced from the Longmaxi Fm. after hydraulic fracturing; it was...
Abdulrazzag Y. Zekri - One of the best experts on this subject based on the ideXlab platform.
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Optimum Non Hydrocarbon Gas Injection Development Process and Ultimate Recovery Maximization
SPE EAGE Reservoir Characterization and Simulation Conference, 2009Co-Authors: Abdulla Abdul-fattah Abed, Abdulrazzag Y. ZekriAbstract:A multi layered heterogeneous oil reservoir was selected for this study. The integrated reservoir characterization model and the pertinent transformed reservoir simulation history matched model were quality assured and quality checked. The development scheme was identified and selected where the pattern and completion of the wells were defined to fit the heterogeneity of the reservoir characterization model. Lateral and maximum block contact holes were investigated. The development processes studied were mainly hydrogen sulphide, carbon dioxide, nitrogen and rich hydrocarbon Gas. The Water Alternating Gas/ Simultaneous Water Alternating Gas (WAG / SWAG) processes were also assured. In addition to the main Gas and WAG/SWAG processes, many miscible and immiscible EOR processes were also investigated though the results are not presented but may be referred to. Field development options based on the development and processes schemes as well as reservoir management and long-term business plans including phases of implementation were identified and assured. The development option that maximizes the ultimate recovery factor was evaluated and selected. The main objective of this work was to define the development process that could give a maximum ultimate recovery factor of more than 70 %. This could increase the total technical reserves by 30 % over the reserves based on classical water flooding reserves. It may be said that the life of the field could be extended to be almost doubled. The best technically development process that gives a maximum ultimate recovery factor of more than 70 % was the H2S-WAG development process. The enriched-WAG development scheme can be designed to give an equivalent ultimate recovery factor by enriching the Gas. The N2-WAG development process gives a relatively poor recovery factor. This is the lowest of all the Nonhydrocarbon Gas Injection (NHGI-WAG) development processes investigated.
Zhe Song - One of the best experts on this subject based on the ideXlab platform.
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The molecular and carbon isotopic constrains on origin and storage of Longmaxi Formation shale Gas in Changning area, Sichuan Basin, China
Interpretation, 2015Co-Authors: Qingyan Tang, Mingjie Zhang, Zhe Song, Zhongping Li, Xiao HuAbstract:ABSTRACTWe have developed a vacuum-crushing method for the extraction of Gases stored in shale for the determination of Gas yield, chemical composition, and carbon isotopic composition by online Gas-chromatography and mass spectrometry. Analysis of the evacuation and parallel experiments showed low standard deviation and good reproducibility. This approach significantly improved the detection limits for trace-Gas analysis in shale and measured multiple Nonhydrocarbon Gas components in a single run. We analyzed the chemical and carbon isotopic compositions of the Gases released by one-step vacuum crushing from nineteen samples of organic-rich Longmaxi Formation (Fm.) shale in Changning outcrop, Sichuan Basin, China, and we studied the main controls on Gas chemistry of retained Gas in the Longmaxi Shale. The results showed that the crushed Gas is high in N2 and CO2 but low in CH4. The crushed Gas has obviously lower C1/CO2 ratios than the Gas produced from the Longmaxi Fm. after hydraulic fracturing; it was...