黄国恒, 苏正, 夏枚生, 邬黛黛. 天然气水合物开采井孔出砂问题研究[J]. 海洋地质与第四纪地质, 2017, 37(5): 174-183. DOI: 10.16562/j.cnki.0256-1492.2017.05.018
引用本文: 黄国恒, 苏正, 夏枚生, 邬黛黛. 天然气水合物开采井孔出砂问题研究[J]. 海洋地质与第四纪地质, 2017, 37(5): 174-183. DOI: 10.16562/j.cnki.0256-1492.2017.05.018
HUANG Guoheng, SU Zheng, XIA Meisheng, WU Daidai. STUDY ON SAND PRODUCTION IN A NATURAL GAS HYDRATE PRODUCTION WELL[J]. Marine Geology & Quaternary Geology, 2017, 37(5): 174-183. DOI: 10.16562/j.cnki.0256-1492.2017.05.018
Citation: HUANG Guoheng, SU Zheng, XIA Meisheng, WU Daidai. STUDY ON SAND PRODUCTION IN A NATURAL GAS HYDRATE PRODUCTION WELL[J]. Marine Geology & Quaternary Geology, 2017, 37(5): 174-183. DOI: 10.16562/j.cnki.0256-1492.2017.05.018

天然气水合物开采井孔出砂问题研究

STUDY ON SAND PRODUCTION IN A NATURAL GAS HYDRATE PRODUCTION WELL

  • 摘要: 天然气水合物是一种重要的非常规能源,但水合物开采出砂问题成为制约其走向商业化开发的关键因素。南海北部陆坡是我国天然气水合物的重要赋存区,其水合物主要以分散状弱胶结方式赋存,研究其出砂问题显得极为迫切。研究表明储层出砂的根本原因是储层介质强度降低,而水合物储层介质强度受到水合物胶结模式、水合物饱和度、孔隙流体压力、流速及生产压差等影响。本文在对比分析天然气水合物储层出砂与常规油气藏出砂特征的基础上,总结了弱胶结疏松砂岩油藏出砂研究方法,为天然气水合物储层开采井孔出砂的研究提供思路和参考。

     

    Abstract: Natural gas hydrate has been proved significant as a kind of unconventional energy source. However, the sand production from gas hydrate-bearing deposits has remained a nightmare to the commercial development of the resource. The northern slope of the South China Sea is an important natural gas hydrate area in China. The natural gas hydrate there is distributed mainly in a scattered pattern by weakly cemented deposits and it really is urgent to study the mechanism of sand production for sustainable development of the resource. The fundamental reason of sand production is the decrease in the strength of reservoir medium, which is cemented by hydrate, and effected by the factors of hydrate saturation, pore fluid pressure, flow rate, production pressure and so on. Based on the comparison of sand production from the natural gas hydrate reservoir to the conventional oil and gas reservoir, this paper summarizes the up-to-date research results of sand production in weakly cemented sandstone reservoirs, and taking it as a reference we studied the sand production in natural gas hydrate reservoirs.

     

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