دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

tubes with a diameter slightly larger than the braded wireline or slick line that are used in the “stuffing box” on a wireline intervention to isolate the well pressure and fluid from the atmosphere. They work in combination with oil or wireline grease in

in a well work sense, usually a non-rig well entry using wireline or CT intervention where the well head remains attached. Rigs may be used. Compare to workover.

n: an entry of water, gas, oil, or other formation fluid into the wellbore during drilling. It occurs because the pressure exerted by the column of drilling fluid is not great enough to overcome the pressure exerted by the fluids in the formation drilled. If prompt action is not taken to control the kick. or kill the well, a blowout may occur. See blowout.

n/v: an entry of formation fluids (oil,gas or water) into the wellbore,caused by the formation pressure exceeding the pressure exerted by the mud column.

an unwanted flow of fluids from a formation into the wellbore. Can happen during drilling, completions or interventions.

the valve at the top of the tree, above the flow cross or flow Tee. The lubricator for interventions may be attached above this valve or the valve may be removed to fit a larger lubricator.

a operating philosophy and sometimes a requirement that calls for having two barriers to flow from a well. Most appropriate for active drilling, workover or intervention. May not be appropriate for all production wells but is appropriate for wells with a