Device used to store potential energy and convert it to kinetic energy when the  power jar fires. An accelerator is what generates the impact force by accelerating the toolstring stem.

A permanent or retrievable downhole tool set typically on wireline to isolate a section of the well.

Short toolstring that can contain all the standard toolstring items such as rope socket , accelerator, stem,power jar, spang jar etc. Mainly suitable for wells with 4 1/2" or larger tubulars

String of tubulars and other compoents through which the hydrocarbons are produced to surface.

Means of connecting tools with differing connections together to form a complete string.

Gathering of data generally from deep within the wellbore.

Removal of unwanted debris/deposits from the wellbore.

Wells who's trajectory or angle is not truelly vertical. Generally deviation is not highly significant for wireline intervention until it excedes 50 degree from the vertical.

The use of wireline toolstring to impart a downward shock load on tool or object within the wellbore. Downward becomrs less effective as the well deviation increases.

Cable with electric conduit used to lower equipment into well bore.

Distinct profile on the uppermost section of a tool used for running or recovery of equipment within well bore

Equipment used in the recovery of stuck tools or objects from the well bore.

Equipment used in the management of hydrocarbon flow within the completion string.

The rotational position of perforating gun charges

High pressure / High Temperature wells. Generally used for wells with temperatures exceding 350F and wellhead pressures of 10k psi or greater

Device used to isolate a section of the completion string or well bore.

Applying a shock load impact through manipulation of toolstring components.

A tool that can be included within a toolstring to provide some articulation to allow tools to travel freely pasted kinks or bends within the wellbore

Detecting a leak path from within the completion producing bore to annulus

A tool set by purely mechanical manipulation of toolstring.

A completion string with minimal restrictions. Generally the only restriction being through the sub-surface safety valve.

National Pipe Thread

Plugs that are not designed to be recovered from the wellbore. These can as a rule be milled out if required.

Device to form a pressure retaining barrier within wellbore.

Series of tools to provide a downhole barrier.

Pull Out of Hole - anagram used to shorten offshore reporting.

Parts used to re-dress a tool after use.

Tools that utilise rollers to enhance intervention in deviated wells.

Uppermost tool of the toolstring. Used to make the wire / cable connection to the toolstring.

Sealing Integrity Management

Single strand of wire used to lower tools into wellbore.

The initially step in drilling a well.

Devices used to isolate leaks within the tubing string or isolate producing zones but still provide a flow path through the straddle bore.

Component of a toolstring that allows free rotational movement.

String or series of tools connected together for the purposes of lowering into a wellbore.

Stem filled with heavy tungsten carbide. Used to provide extra weight to a toolstring whilst minimising overall length. Generally not suitable for heavy jarring.

Impact force that is applied in an upward direction.

Gaining access to the wellbore to conduct remedial work.

Removal of debris/solids from a wellbore. Often conducted prior to running the completion in a newly drilled well.

a fluted roller centraliser sub, designed by Peak to assist in the conveyance of a wireline toolstring into high angle, deviated wells.

Generally implies a multistrand cable used for well intervention.

Isolation of a specific area or section of the producing section of the well bore.

Three dimensional eg. 3D animation