Next Article in Journal
Multi-Saliency Aggregation-Based Approach for Insulator Flashover Fault Detection Using Aerial Images
Previous Article in Journal
Device Performance Improvement of Recycling Double-Pass Cross-Corrugated Solar Air Collectors
Article

Influence of Reservoir Stimulation on Marine Gas Hydrate Conversion Efficiency in Different Accumulation Conditions

by 1,2,3,4, 1,2,3,4,*, 1,2,3,4,*, 1,2,3,4, 1,2,3,4, 1,2,3,4, 1,2,3,4 and 1,2,3,4
1
Engineering College, Jilin University, Changchun 130026, China
2
State Key Laboratory of Superhard Materials, Changchun 130012, China
3
Key Laboratory of Drilling and Exploitation Technology in Complex Conditions, Ministry of Land and Resources, Changchun 130026, China
4
National Geophysical Exploration Equipment Engineering Research Center, Jilin University, Changchun 130026, China
*
Authors to whom correspondence should be addressed.
Energies 2018, 11(2), 339; https://doi.org/10.3390/en11020339
Received: 10 December 2017 / Revised: 19 January 2018 / Accepted: 24 January 2018 / Published: 2 February 2018
(This article belongs to the Section Energy Fundamentals and Conversion)
In this paper, we used a method of combining reservoir stimulation technique (RST) with depressurization to investigate the conversion efficiency of marine natural gas hydrate (NGH) reservoirs in the Shenhu area, on the northern slope of the South China Sea, which differ in intrinsic permeability and initial NGH saturation conditions. We also analyzed the influence of the variable-stimulation effect on marine NGH conversion efficiency in different accumulation conditions, providing a reference scheme for improving the NGH conversion efficiency in the Shenhu area. In this work, we performed calculations for the variations in CH4 production rate and cumulative volume of CH4 in different initial NGH saturation, intrinsic permeability, and stimulation effect conditions. Variance analysis and range analysis methods were used to analyze the significance of these key factors and their interaction. Furthermore, we investigated the sensitivity of stimulation effect on NGH conversion efficiency. The simulation results showed that the stimulation effect has a significant influence on NGH conversion efficiency, and the influence of interaction between these three factors was not obvious. Possibly most importantly, we clarified that the sparsely fractured networks (N = 3) had a better effect for higher NGH conversion efficiency under higher saturation conditions. For lower permeability cases, the influence between sparsely (N = 3) and densely (N = 5) fractured networks were similar. View Full-Text
Keywords: natural gas hydrate; reservoir stimulation technique; variance analysis; conversion efficiency; sensitivity analysis; numerical simulation natural gas hydrate; reservoir stimulation technique; variance analysis; conversion efficiency; sensitivity analysis; numerical simulation
Show Figures

Figure 1

MDPI and ACS Style

Yang, L.; Chen, C.; Jia, R.; Sun, Y.; Guo, W.; Pan, D.; Li, X.; Chen, Y. Influence of Reservoir Stimulation on Marine Gas Hydrate Conversion Efficiency in Different Accumulation Conditions. Energies 2018, 11, 339. https://doi.org/10.3390/en11020339

AMA Style

Yang L, Chen C, Jia R, Sun Y, Guo W, Pan D, Li X, Chen Y. Influence of Reservoir Stimulation on Marine Gas Hydrate Conversion Efficiency in Different Accumulation Conditions. Energies. 2018; 11(2):339. https://doi.org/10.3390/en11020339

Chicago/Turabian Style

Yang, Lin, Chen Chen, Rui Jia, Youhong Sun, Wei Guo, Dongbin Pan, Xitong Li, and Yong Chen. 2018. "Influence of Reservoir Stimulation on Marine Gas Hydrate Conversion Efficiency in Different Accumulation Conditions" Energies 11, no. 2: 339. https://doi.org/10.3390/en11020339

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop