Enhancement of gas production from methane hydrate reservoirs by the combination of hydraulic fracturing and depressurization method

Yongchang Feng, Lin Chen, Anna Suzuki, Takuma Kogawa, Junnosuke Okajima, Atsuki Komiya, Shigenao Maruyama

研究成果: Article査読

60 被引用数 (Scopus)

抄録

The combination of hydraulic fracturing and depressurization method has been proposed to enhance gas production efficiency from methane hydrate (MH) reservoirs. To evaluate the efficacy of this method, we construct a fractured MH reservoir model and investigate by means of numerical simulation the gas production behaviors under two different temperature conditions. The simulation results indicate that the combination of hydraulic fracturing and depressurization method is more efficient for gas production than the single depressurization method. For the high-temperature reservoir, the hydrate dissociation and gas production during the early depressurization stage can be significantly enhanced after fracturing, and the effect of increasing the size and permeability of the fractured zone on gas production rate is more remarkable in the early depressurization stage than in the late depressurization stage. For the low-temperature reservoir, while the improvement in hydrate dissociation and gas production by fracturing is dramatic during the entire depressurization period, the increment in total gas production is very low in absolute terms. In addition, gas production from low-temperature reservoir is very sensitive to initial temperature, and increasing the reservoir temperature can enhance the benefits of fracturing.

本文言語English
ページ(範囲)194-204
ページ数11
ジャーナルEnergy Conversion and Management
184
DOI
出版ステータスPublished - 2019 3 15

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 原子力エネルギーおよび原子力工学
  • 燃料技術
  • エネルギー工学および電力技術

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