external gas injection

external gas injection

[ek¦stərn·əl ′gas in‚jek·shən]
(petroleum engineering)
Pressure-maintenance gas injection with wells located in the structurally higher positions of the reservoir, usually in the primary or secondary gas cap. Also known as crestal injection; gas-cap injection.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Separate distinct gas pins are used for internal and external gas injection, but both are located on the core side of the mold.
Meanwhile, news in external gas injection comes from Caropreso Associates, a Chester, Mass., consulting firm, which is now offering a gas counterpressure control module.
External gas injection is finally getting molders' attention as a means to improve part surface quality.
Three external gas injection techniques are being promoted by five firms in the U.S.: the Airmould Contour process from Battenfeld of America; external gas molding technology developed by Asahi Kasei Corp.
These concerns have opened the door to external gas injection. Besides solving surface-quality problems, which may also eliminate downstream painting, external gas techniques can yield a variety of process benefits.
External gas injection typically requires a pressure sensor in the mold or in the gas-delivery lines, as well as a gas generator and control technology.