Title:
A HIGH-ENERGY GAS FRACTURE TOOL FOR THROUGH-TUBING OPERATION
Document Type and Number:
WIPO Patent Application WO/2006/045248
Kind Code:
A1
Abstract:
The present invention discloses a high-energy gas fracture tool for through-tubing operation. The tool includes a blast head and a fracturing bullet connecting with blast head. An electric detonator is provided in the blast head, and the fracturing bullet has a central pipe, which is sleeved by a fracture, charge column and in which there is a explosive fuse sleeved by tubular igniting charge column. The present invention increases effectively charge amount per unit due to using no-shell bared fracture charge column, can attain combustion gas peak pressure quickly and increases energy utilization factor during fracturing because of utilizing blasting energy of explosive fuse and combustion energy of igniting charge. The present invention has better application effect, reliable and safe working. Moreover, the present invention may be used for fracturing or plug removal without tubing.
Inventors:
ZHOU ZHIHUA (CN)
LI YUANHONG (CN)
LIU JUN (CN)
LI YUANHONG (CN)
LIU JUN (CN)
Application Number:
PCT/CN2005/001772
Publication Date:
May 04, 2006
Filing Date:
October 27, 2005
Export Citation:
Assignee:
XI AN TONGYUAN PETROTECH CO LT (CN)
ZHOU ZHIHUA (CN)
LI YUANHONG (CN)
LIU JUN (CN)
ZHOU ZHIHUA (CN)
LI YUANHONG (CN)
LIU JUN (CN)
International Classes:
E21B31/00; E21B43/263; (IPC1-7): E21B43/263
Domestic Patent References:
| WO1997008427A1 | 1997-03-06 |
Foreign References:
| RU2197612C2 | 2003-01-27 | |||
| US4329925A | 1982-05-18 | |||
| CN2170371Y | 1994-06-29 | |||
| CN2208098Y | 1995-09-20 | |||
| CN2464936Y | 2001-12-12 | |||
| CN2560755Y | 2003-07-16 |
Attorney, Agent or Firm:
Unitalen, Attorneys Law AT. (Scitech Place No. 22, Jian Guo Men Wai Avenu, Chao Yang District Beijing 4, CN)
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