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Production forecasting glossary: Difference between revisions

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This glossary was creatged through discussions among members of the SPE Production Forecasting Global Integrated Workshop Series. Some definitions were not contested at all, others generated fierce discussions.  
This glossary was created through discussions among members of the SPE Production Forecasting Global Integrated Workshop Series. Some definitions were not contested at all, others generated fierce discussions.  


==A==
==A==
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See also: IPSC and ABNR
See also: IPSC and ABNR
'''ABNR'''
Available But Not Required, that part of the IPSC that is available for production but not produced because of low off-take demand. ABNR typically occurs in Demand Driven Production Systems.
==C==
'''Choke Model'''
A model visualising and quantifying a series of restrictions or chokes that represent the areas of production loss, i.e. Reservoir potential (as measured by well tests), that is not, or cannot be, delivered at custody transfer point. These are simplified for management reporting as Reservoir, Wells, Plant, and Export chokes.
'''Constraint'''
A production or injection constraint is a factor limiting production or injection capacity. This can be a physical constraint induced by existing or planned equipment capacity (e.g. compressor capacity) or an operational  constraint induced by commercial, political, social, economic, regulatory, permitting, government, or environmental guidelines (e.g. flare limits, max allowable reservoir voidage, contractual production limits, etc.).
'''Controllable variable'''
A variable that can be influenced by staff through improved working procedures, for example down-time. See also: non-controllable variable.
'''CTP'''
Custody Transfer Point, the point at which the forecast volumes are quantified.
Note: this may be different from the volumes produced from the reservoir and wells, as it takes into account “own use”, flare/vent volumes and potential losses in the production system.
==D==
'''DCQ'''
Daily Contracted Quantity. Can be absolute or derived from the ACQ.





Revision as of 09:41, 21 May 2014

This glossary was created through discussions among members of the SPE Production Forecasting Global Integrated Workshop Series. Some definitions were not contested at all, others generated fierce discussions.

A

ACQ

Annual Contractual Quantity. The contract quantity is the contractually agreed volumes and limits: predefined (annual) volume of natural gas on contract level.

Availability

A factor applied to forecasts to take into account the fact that a Production System will not always operate at 100% of its capacity.

See also: IPSC and ABNR

ABNR

Available But Not Required, that part of the IPSC that is available for production but not produced because of low off-take demand. ABNR typically occurs in Demand Driven Production Systems.

C

Choke Model

A model visualising and quantifying a series of restrictions or chokes that represent the areas of production loss, i.e. Reservoir potential (as measured by well tests), that is not, or cannot be, delivered at custody transfer point. These are simplified for management reporting as Reservoir, Wells, Plant, and Export chokes.

Constraint

A production or injection constraint is a factor limiting production or injection capacity. This can be a physical constraint induced by existing or planned equipment capacity (e.g. compressor capacity) or an operational constraint induced by commercial, political, social, economic, regulatory, permitting, government, or environmental guidelines (e.g. flare limits, max allowable reservoir voidage, contractual production limits, etc.).

Controllable variable

A variable that can be influenced by staff through improved working procedures, for example down-time. See also: non-controllable variable.

CTP

Custody Transfer Point, the point at which the forecast volumes are quantified. Note: this may be different from the volumes produced from the reservoir and wells, as it takes into account “own use”, flare/vent volumes and potential losses in the production system.

D

DCQ

Daily Contracted Quantity. Can be absolute or derived from the ACQ.




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