发明名称 |
A STRUCTURE FOR GUNPOWDER CHARGE IN MULTI-FRAC COMPOSITE PERFORATING DEVICES |
摘要 |
<p>This invention provides a structure for gunpowder charge in multistage composite perforation devices that is easy to assemble and transport while the charge volume of gunpowder is increased. In one embodiment of the present invention, an triplet outer gunpowder box is attached onto the outer wall of the charge frame and comprises one middle gunpowder box charged with gunpowder of certain burning rate, and two side-hung gunpowder boxes charged with gunpowder of another burning rate. The two side-hung gunpowder boxes are separately located on the two sides of the middle gunpowder box and are connected with the middle gunpowder box as a unit. The middle gunpowder box is located at a position corresponding to the perforating charge, and has an inner groove for orienting the perforating charge and a through hole through which the jet flow passes.</p> |
申请公布号 |
CA2859640(A1) |
申请公布日期 |
2013.09.06 |
申请号 |
CA20122859640 |
申请日期 |
2012.12.14 |
申请人 |
TONG PETROTECH INC;TONG OIL TOOLS CO., LTD |
发明人 |
ZHANG, GUOAN;CHENG, JIANLONG;SUN, XIANHONG |
分类号 |
E21B43/116 |
主分类号 |
E21B43/116 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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