Title:
HYDRAULIC FRACTURING METHOD AND HYDRAULIC FRACTURING SYSTEM FOR GAS HYDRATE LAYERS
Document Type and Number:
WIPO Patent Application WO/2018/008535
Kind Code:
A1
Abstract:
The purpose of the invention is to provide a hydraulic fracturing method and a hydraulic fracturing system for gas hydrate layers that can form a crack in the gas hydrate layer using a hydraulic fluid that does not contain additives and that can maintain good permeability in the gas hydrate layer without injecting proppant. Provided is a hydraulic fracturing method for gas hydrate layers wherein a pipe 3 that extends to a prescribed depth t at which a crack is to be formed in a gas hydrate layer G2 and though which a pressurized fluid flows is constructed in the ground, and a crack C is formed at the prescribed depth by injecting, at the prescribed depth in the gas hydrate layer G2, the pressurized fluid for which the pressurized fluid pressure P (MPa) has been adjusted to a range of (2.9 + P0) (MPa) ≤ P (MPa) < P1 (MPa) where P0 (MPa) is the minimum stress at the prescribed depth and P1 (MPa) is the internal pressure resistance of the pipe 3.
Inventors:
KONNO YOSHIHIRO (JP)
JIN YUSUKE (JP)
NAGAO JIRO (JP)
UCHIUMI TAKASHI (JP)
SHINJO KAZUNORI (JP)
JIN YUSUKE (JP)
NAGAO JIRO (JP)
UCHIUMI TAKASHI (JP)
SHINJO KAZUNORI (JP)
Application Number:
PCT/JP2017/024072
Publication Date:
January 11, 2018
Filing Date:
June 30, 2017
Export Citation:
Assignee:
AIST (JP)
International Classes:
E21B43/26
Foreign References:
| JP2016108867A | 2016-06-20 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
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