E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/119 (2006.01)
Patent
CA 2539244
The invention relates to a perforation gun comprising an external gun barrel (1) in the interior of which perforators (10) are located which can be ignited via a fuse (11) extending through the gun barrel (1) and which, after ignition, pierce the gun barrel (1) with perforation holes (13), whereby means are provided which automatically close the perforation holes (13). According to an embodiment of the invention, the means for automatically closing the perforation holes comprise cartridges including a swellable two-component foam. Said cartridges are located inside the gun barrel (1) and can be broken up by the ignited fuse (11), thereby allowing foam to escape from the cartridges, allowing it to swell and obliterate the perforation holes (13). If the means for automatically closing the perforation holes (13) comprise a sliding tube (4) that can be displaced after perforation by an adjusting device by at least the diameter of the perforation hole (13), the sliding tube (4) is located coaxially between the perforators (10) and the gun barrel (1).
L'invention concerne un canon de perforation comprenant un tuyau de canon extérieur (1) à l'intérieur duquel sont disposés des perforateurs (10) qui peuvent être allumés par un cordeau détonant (11) s'étendant dans le tuyau de canon (1) et qui, une fois l'allumage effectué, percent le tuyau de canon (1) par des trous de perforation (13), des moyens étant prévus pour obturer automatiquement ces trous de perforation (13). Dans un mode de réalisation de cette invention, lesdits moyens d'obturation automatique comprennent des cartouches contenant une mousse gonflable à deux composants. En outre, ces cartouches sont disposées dans le tuyau de canon (1) et peuvent être ouvertes par le cordeau détonant (11) allumé, ce qui permet à la mousse de sortir des cartouches, de gonfler et de boucher les trous de perforation (13). Lorsque les moyens d'obturation automatique des trous de perforation (13) comprennent un tuyau coulissant (4) qui peut être déplacé, après la perforation, au moyen d'un dispositif de déplacement, d'une distance correspondant au moins au diamètre du trou de perforation (13), ledit tuyau coulissant (4) est disposé de manière coaxiale entre les perforateurs (10) et le tuyau de canon (1).
Krauthaeuser Wilfried
Rospek Rolf
Veehmayer Malte
Dynaenergetics Gmbh & Co. Kg
Robic
LandOfFree
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