perforations
McGraw-Hill Science & Technology Dictionary:
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perforations
(′pər·fə′rā·shənz)
(graphic arts) Small rectangular sprocket holes along the edge of film.
(petroleum engineering) Downwell holes made in well tubing, usually by shot-and-explosive or shaped-charge techniques; used for oil or gas production from desired horizons, or for injection of acidizing or fracturing fluids into the formation at predetermined depths.
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McGraw-Hill Science & Technology Dictionary
McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
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