دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see drill stem test.

n: two packers separated by a spacer of variable length. A straddle packer may be used to isolate sections of open hole to be treated or tested or to isolate certain areas of perforated casing from the rest of the perforated section.

n: A kind of equipment used to packoff layer,which include two packer.

a twin sealing element device with a perforated nipple in between. It is used to selectively inject fluids into a part of the zone.