A cable composed of steel wires twisted around a central core of fiber or steel wire to create a rope of great strength and considerable flexibility.
Wire rope is used as drilling line (in rotary and cable-tool rigs), coring line, servicing line, winch line, and so on.
It is often called cable or wireline; however, wireline is a single, slender metal rod, usually very flexible.
Compare wireline.
A formation fluid sampling device, actually run on conductor line rather than wireline, that also logs flow and shut-in pressure in rock near the borehole.
A spring mechanism holds a pad firmly against the sidewall while a piston creates a vacuum in a test chamber.
Formation fluids enter the tes5t chamber through a valve in the pad.
A recorder logs the rate at which the test chamber is filled.
Fluids may also be drawn to fill a sampling chamber.
Wireline formation tests may be done any number of times during one tip in the hole, so they are very useful in formation testing.
A small-diameter metal line used in wireline operations.
Also called slick line.
Compare conductor line.
A machine used for pulling or hoisting that does so by winding a cable around a spool.
A wheel-shaped wrench that is attached to the sucker rod string at the surface and is manually turned to unscrew the string to allow it to be pulled from the well.
Anything liable to cause death or serious injury of a workman.
A special-purpose packer placed in the casing to permit a sidetrack operation.
The equipment installed at the surface of the wellbore.
A wellhead includes such equipment as the casinghead and tubing head.
Adj: pertaining to the wellhead (e.g., wellhead pressure).
See differential sticking.
A drilling mud in which the continuous phase is water.
In water-gas muds, any additives are dispersed in the water.
Compare oil-base mud.
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.
An instrument near the driller’s position on a drilling rig that shows both the weight of the drill stem that is hanging from the hook (hook load)
A well drilled to (1) obtain a water supply to support drilling or plant operations, or (2) obtain a water supply to be used in connection with an improved recovery program.
Gas that carries a lot of liquids with it.
See invert-emulsion mud, water loss, fluid loss.