Journal
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
Volume 27, Issue -, Pages 306-320Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2015.08.071
Keywords
Hydrate dissociation; Depressurization; Warm brine; Horizontal well; Pearl River Mouth Basin; South China Sea
Categories
Funding
- National Science Fund for Distinguished Young Scholars of China [51225603]
- National Natural Science Foundation of China [51376183, 51406210, 51476174]
- Chinese Academy of Sciences [KGZD-EW-301-2]
- International SAMP
- T Cooperation Program of China [2015DFA61790]
Ask authors/readers for more resources
In 2013, gas hydrate accumulations were confirmed in the Dongsha Area of the South China Sea by the scientific drilling expedition GMGS2. The drilling sites of GMGS2-01, -04, -05, -07, -08, -09, -11, -12, and -16 were verified with the existence of hydrate bearing layer. The gas production behavior was evaluated at GMGS2-16 by numerical simulation in this work. The scenarios of single depressurization with single horizontal well and dual horizontal wells and the depressurization in conjunction with warm brine stimulation with dual horizontal wells were carried out in this work. Simulation results indicated that gas production rate for the single depressurization with dual horizontal wells was higher than that for the single horizontal well. In addition, the gas production performance was more favorable when using the depressurization in conjunction with brine stimulation. The average gas production rate with such scenario can obtain the same order of magnitude with the minimum production level of the commercial viability of the hydrate exploitation in the Gulf of Mexico. Furthermore, the sensitivity analysis indicates that gas production rate increases with-the increase of injection temperature. However, the energy loss increases with the rise of injection temperature. Increasing the injection salinity or the injection rate can increase the gas production rate as well. However, the energy ratio is the highest for the case with the middle-higher injection rate. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available