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PRODUCING (ACTIVE) WELLS

‘Producing (Active) Wells’ are defined as those that have been drilled into a reservoir and are used to produce oil and/or gas from that reservoir including wells that are used for injection of fluids.

Producing Wells (Oil)

‘Producing Wells (Oil)’ include all active wells that have been drilled into an oil or oil and gas reservoir and are used to produce oil (and any associated gas) from that reservoir. They include wells that are used for injection of fluids.

Producing Wells (Gas)  

‘Producing Wells (Gas)’ include all active wells that have been drilled into a gas reservoir that has no associated liquids (including condensates stable at the surface). The wells are used to produce only gas and include wells that are used for injection of fluids.

DRILLED WELLS TYPE

‘Drilled Wells’ are defined as those drilled by drilling rigs with intent to locate and exploit oil and gas resources, allocated to the year of spud, except for pre-spudded development wells, allocated to the year of return to the hole.

Sidetracks, drilled from existing well bores, are defined as drilled wells if the original well has seen its rig stand down and the intent is to acquire new data and production. A type category is given to a drilled well when it is planned as follows:

Exploratory Wells  

‘Exploratory Wells’ are defined as the sum of exploration and appraisal wells.

Exploration Wells

‘Exploration Wells’ are defined as those drilled where a field is suspected (a prospect), to determine the presence of hydrocarbons and collect data to assess the merit of a prospect.

Appraisal Wells

‘Appraisal Wells’ are defined as those drilled during appraisal of a prospect that has been drilled by a successful exploration well.

Development Wells  

‘Development Wells’ are defined as all those drilled to produce a field once volumes have been proven by exploratory wells, including producers and injectors.

Surface-Completed Wells (offshore only)

On fixed platforms the valve set (Christmas Tree) can be above sea level (dry); such a well is defined as a ‘Surface-Completed Well’.

Subsea-Completed Wells (offshore only)

On most floating platforms the Christmas Tree is located on the sea floor (wet) and a riser runs to the production platform; such a well is defined as ‘Subsea-Completed Well’.


There are 4 drilled well types, quantified and forecast by Globalshift, split onshore, and offshore by water depth with active wells also recorded

Wells

Vertical axis in chart corresponds to number of wells spudded in year including stand-alone sidetracks.

Wells in chart include those drilled in exploratory and development categories in onshore environments but excluding CBM.

Full breakdowns are available in datafiles.

DRILLED WELLS LOCATION

Drilled Wells (Onshore)

Drilled Wells (Onshore)’ are defined as those that are not defined as ‘Drilled Wells (Offshore)’. They include wells drilled from shallow water barges in lakes and swamps and wells drilled from onshore sites to tap offshore accumulations.

Drilled Wells (Offshore, split by water depth))

‘Drilled Wells (Offshore)’ are defined as those that are drilled with rigs in marine environments, including land rigs, such as platform rigs, erected on platforms and artificial islands. The location of the wellhead defines the water depth. ‘Very shallow waters’ have a seabed location beneath marine water depths down to 100m, ‘medium shallow waters’ from 100 to 500m, ‘medium deep waters’ from 500 to 1000m, ‘very deep waters’ from 1000 to 2000m, and ‘ultra deep waters’ from greater than 2000m.

Vertical axis in chart corresponds to number of wells spudded in year including stand-alone sidetracks.

Wells in chart include those drilled in exploratory and development categories in offshore environments at selected water depths.

Full breakdowns are available in datafiles.

Low-Cost Spreadsheets

Datafiles

Buy Excel files - histories and forecasts of production and wells split into any category for all countries and regions

Review files

Oils

Gases

Wells

Reserves

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