Schlumberger

Industry Article: Efficient Perforation of High-Pressure Deepwater Wells

JPT article on perforating high-pressure deepwater wells
Publication: Journal of Petroleum Technology
Publication Date: 05/01/2012

Thousands of perforating jobs are conducted successfully worldwide each month. However, for a small number of jobs, typically high-pressure deepwater wells, gun shock is a real and significant risk. The Cascade and Chinook projects presented the two largest deepwater high-pressure perforation jobs to date in the Gulf of Mexico. Petrobras partnered with the Schlumberger team to conduct successful perforation runs on Cascade and Chinook. Perforating all intervals with long gun strings and then frac packing multiple zones in a single trip saves substantial rig time compared with performing conventional stacked frac-packed completions requiring multiple trips per perforated zone.




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