Home > Terms > English, UK (UE) > Lifting sub

Lifting sub

A short drillstring component that is temporarily connected to the top of a tool assembly that is to be lifted vertically, such as when running or retrieving a tool string. The external profile on the upper section of the lifting sub is similar to that of the completion tubing, enabling the rig elevators to lift the assembled tool string safely.

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Related terms

lifting sub
Oil & gas; Oilfield

A short drillstring component that is temporarily connected to the top of a tool assembly that is to be lifted vertically, such as when running or retrieving a tool string. The ...

lifting sub
Oil & gas; Drilling

a threaded device placed in the end of tubulars, such as drill collars to aid in lifting; also called hoisting plug.

lifting sub
Oil & gas; Oilfield

The short pipe section that screws into the top of the tubing hanger and is then latched onto by the elevators to manipulate the tubing string.

sub
Oil & gas; Drilling

Any small component of the drillstring, such as a short drill collar or a thread crossover.

sub
Energy; Natural gas

A short piece of pipe used to connect parts of the drilling string that could not otherwise be connected due to differences in thread size or design.

sub
Law; Legal services; General law

Under, below, secondary, a smaller part.

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An annual payment made by an oil company to a State in order to retain rights in a particular concession.

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Undeveloped oil and/or gas reserves which best engineering judgement indicates might eventually be recoverable from undrilled or untested structures.

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A geological survey method in which measurements of the variations in the surface gravitational field are used to determine the nature of the underlying rocks.

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