E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/117 (2006.01)
Patent
CA 2600094
A perforating gun assembly (110) for creating communication paths for fluid between a formation (114) and a cased wellbore (116) includes a housing, a detonator and a detonating cord (136).The perforating gun assembly (110) includes one or more substantially axially oriented collections of shaped charges (122, 124, 126) each of which is operably associated with the detonating cord (136). A perforation (152, 154) is formed in the formation (114) as a result of the interaction of jets (141, 142) formed upon the detonation of at least two shaped charges (122, 126) that create a weakened region (148) in the formation (114) followed by the detonation of at least one shaped charge (124) that forms a jet (150) that penetrated through the weakened region (148).
L'invention concerne un ensemble perforateur (110) conçu pour créer des chemins de communication pour fluide entre une formation (114) et un puits tubé (116), qui comporte un boîtier, un détonateur et un cordeau détonant (136). L'ensemble perforateur (110) comporte une ou plusieurs collections de charges creuses (122, 124, 126) dirigées sensiblement selon l'axe, chacune étant fonctionnellement associée au cordeau détonant (136). Une perforation (152, 154) est créée dans la formation (114) à la suite de l'interaction de jets (141, 142) formés suite à la détonation d'au moins deux charges creuses (122, 126) qui créent une zone affaiblie (148) dans la formation (114) suivie par la détonation d'au moins une charge creuse (124) qui produit un jet (150) traversant la zone affaiblie (148).
Barker James M.
Macniven Duncan A.
Rogers Michael C.
Delphian Technologies Limited
Halliburton Energy Service Inc.
Shapiro Cohen
Well Ballistics Limited
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