دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The packer is connected at the suitable part of casing string and trapped in the well to adjust for payzone. There are two non-return valves and a pilot valve. Open the pilot valve when reach to the certain pump pressure in cementing. The cement slurry en

external casing packer.

n: the rubber tools of hydraulically operated packoff colsed on the casing and connected in the place where the layer should be packed off


a rubber bladder over a section of casing that is inflated, usually with cement, to give an annular seal in open hole sections. Frequently used with liners and set at intervals along the open hole.

n: refer to external casing packer.

abbr: initial circulating pressure;used in drilling reports.

inflatable casing packer.