دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a special tube installed in a string of tubing, having matching wireline tool with locking pawls. It is used to hold a regulator, choke, or safety valve;to anchor a pump;or to permit installation of gas lift valves. Also called a landing nipple.

a machined profile in a heavy wall short tubing section that allows a plug to be set and the seal on the plug to effectively isolate the well.

n: a special class of saltwater muds in which sea water is used as the fluid phase.

n: see playa.

abbr: section;used in drilling reports.

n: 1. d1e fundamental unit of time in the metric system. 2. in some countries, the crew member who relieves the toolpusber, or rig manager, and is second in command. secondary cementing n: any cementing operation after the primary cementing operation. Secondary cementing includes a plug-back job, in which a plug of cement is positioned at a specific point in the well and allowed to set. Wells are plugged to shut off bottom water or to reduce the depth of the well for other reasons.

n: The thrust bearing located at the hard faced shoulder of the pilot pin.

control panel n: see remote control panel.

n: Alll of the cementing work after primary cementing.


an inexact term. Any cementing after the primary cement job. Rarely used.

n: The formation pressure control by well control technology,equipment and the fluid column pressure of drilling fluid.

n: that part of an orifice meter installation that contains the recording elements, including the gauge lines, orifice meter chart, flow recorder, clock, static spring, etc.