National Oilwell Varco 2015 Annual Report Download - page 32
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Table of Contents
Well completion 1. The activities and methods of preparing a well for the production of oil and gas or for other
purposes, such as injection; the method by which one or more flow paths for hydrocarbons are
established between the reservoir and the surface. 2. The system of tubulars, packers, and other
tools installed beneath the wellhead in the production casing; that is, the tool assembly that
provides the hydrocarbon flow path or paths.
Wellhead The termination point of a wellbore at surface level or subsea, often incorporating various valves
and control instruments.
Well stimulation Any of several operations used to increase the production of a well, such as acidizing or
fracturing.
Well workover The performance of one or more of a variety of remedial operations on a producing oil well to try
to increase production. Examples of workover jobs are deepening, plugging back, pulling and
resetting liners, and squeeze cementing.
Wellbore A borehole; the hole drilled by the bit. A wellbore may have casing in it or it may be open
(uncased); or part of it may be cased, and part of it may be open. Also called a borehole or hole.
Wireline A slender, rodlike or threadlike piece of metal usually small in diameter, that is used for lowering
special tools (such as logging sondes, perforating guns, and so forth) into the well. Also called
slick line.
None.
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