Title:
GAS HYDRATE DRILLING AND COLLECTING METHOD AND ITS DEVICE
Document Type and Number:
Japanese Patent JP3479699
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a gas hydrate drilling and collecting method and its device directly drilling a gas hydrate layer, efficiently collecting gas while controlling gas decomposition within a drilling area, and capable of filling a void after collecting gas.
SOLUTION: The gas hydrate drilling and collecting method and its device are characterized by that high speed jet fluid 3 is jetted from a drilling pipe 30 fit into a layer bed including gas hydrate such as methane hydrate or having danger of a geological hazard due to the gas hydrate to cut and break the layer bed to form gas containing mixed fluid 4, the gas containing mixed fluid 4 is collected to the ground, and an amount (a gas hydrate layer bed void) equivalent to broken bedrock volume reduced by gas hydrate decomposition is filled with constituent of the high speed jet fluid 3.
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Inventors:
Matsuo Katsuya
Sousuke Kurosaka
Yanagi Mori Yutaka
Asano Shun Taro
Junji Shinoda
Sousuke Kurosaka
Yanagi Mori Yutaka
Asano Shun Taro
Junji Shinoda
Application Number:
JP2002010757A
Publication Date:
December 15, 2003
Filing Date:
January 18, 2002
Export Citation:
Assignee:
Tobishima Construction Co., Ltd.
Fuji Research Institute Co., Ltd.
Fuji Research Institute Co., Ltd.
International Classes:
E21B43/16; E21B43/29; E21B43/295; E21B43/00; E21C50/00; (IPC1-7): E21B43/00; E21C50/00
Domestic Patent References:
| JP200061293A | ||||
| JP2000154528A | ||||
| JP200140649A | ||||
| JP2001172960A | ||||
| JP200054365A | ||||
| JP2001303544A | ||||
| JP11172247A | ||||
| JP2001234167A |
Attorney, Agent or Firm:
Kyosei International Patent Office