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AssigneeTong Oil Tools Co., Ltd.
InventorsZhihua Zhou, Yuanhong Li, Jun Liu
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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 the 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 an 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.
A high-energy gas fracture apparatus for through-tubing operation, comprising a blast head, a fracturing bullet connected with the blast head and an electric detonator provided in the blast head, the fracturing bullet having a central pipe sleeved by a fracture charge column outside and containing an explosive fuse sleeved by a tubular igniting charge column inside.
Dependencies are inferred from the claim text.