دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a very small string, usually run along the outside of the tubing and banded to the tubing. Commonly used for hydraulic control of safety valves and sliding sleeves. May also transmit bottom hole gauge data.

n: see sliding sleeve.

a profile design (less common than F, S, and X). The F allows circulation with the annulus. Used in place of a sliding sleeve, but does present a restriction.

n: a metal sleeve that shuts off tubing-to-annulus flow if a packers sliding sleeve fails. See also sliding sleeve.

opening or closing a sliding sleeve.

n: a completion device that can be operated to provide a flow path between the production conduit and the annulus. Sliding sleeves incorporate a system of ports that can be opened or closed by a sliding component that is generally controlled and operated by

n: a 1. special device placed in a string of tubing that can be operated by a wireline tool to open or close orifices to permit circulation between the tubing and the annulus. It may also be used to open or shut off production from various intervals in a well. Also called circulation sleeve, slidingsleeve nipple. 2. a device in a packer that prevents fluid from flowing from the tubing into the annulus.

a downhole piece of equipment in a tubing string that allows flow from annulus to tubing. Usually opened and closed by wireline.

n: see sliding sleeve.

abbr: sand or sandstone;used in drilling reports.

sliding sleeve.