Casing-conveyed perforating guns fired in Canada

Marathon Canada Ltd. has recently used casing-conveyed perforating guns to complete a gas well, Well 14-1-28-18, in the Drumheller field of central Alberta.The novel completion program, in mid-August, involved running 3½-in. casing with externally attached perforating guns, isolation devices, pressure gauges, and remote signaling systems in a 71/8-in. borehole. Click here to enlarge imageRadioactive tags were used to align the perforating guns, at various intervals, to a total depth of 2,543 ft. After the casing was cemented, four separate intervals were perforated at six shots/ft, individually fracture-stimulated with a low-polymer fracturing fluid, isolated with a flapper, and flo...

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