化工学报2011，Vol.62Issue(2)：458-468,11.
单井热吞吐开采南海神狐海域天然气水合物数值模拟
Numerical simulation for gas production from hydrate accumulated in Shenhu Area, South China Sea, using huff and puff method
摘要
Abstract
In this work, the gas production potential from hydrates at the SH7 drilling site of the Shenhu Area by means of the huff and puff method using a single horizontal well was estimated. 3 dimensional numerical model was established based on currently available data from site measurements. The hydrate accumulations in Shenhu Area are similar to Class 3 deposits (involving only a HBL) , and the overburden and underburden layers are assumed to be permeable. The simulation results indicate that the hydrate dissociated zone expands around the well, and the hydrate formation occurs during the injection stage of the huff and puff process. Reasonable injection and production rates should be adopted to avoid the over pressurization and depressurization during each huff and puff cycle. Thermal stimulation is shown to have an effect over a limited range around the well. The gas production rate and gas to water production ratio in the Class 3 hydrate deposit at site SH7 in Shenhu Area in this work is not suitable for commercial production.关键词
天然气水合物/单井热吞吐/水平井/神狐海域Key words
natural gas hydrate/huff and puff method/horizontal well/Shenhu Area分类
能源科技引用本文复制引用
李刚,李小森..单井热吞吐开采南海神狐海域天然气水合物数值模拟[J].化工学报,2011,62(2):458-468,11.基金项目
国家自然科学基金项目(20773133,51004089,51076155) （20773133,51004089,51076155）
中科院知识创新重要方向项目(KGCX2-YW-3X6) （KGCX2-YW-3X6）
广东省科技计划项目(2009B050600006). （2009B050600006）
