Link to USGS home page.
Open-File Report 2005–1355
  About USGS /  Science Topics /  Maps, Products & Publications /  Education / FAQ

Global Significance of Reserve Growth

By D.L. Gautier, T.R. Klett, and B.S. Pierce

thumbnail of slide 14 in presentation

The presentation titled “Global Significance of Reserve Growth” in the form of graphic displays to accompany a commentary provides a general overview of the magnitude and significance of reserve growth in petroleum-bearing areas around the world. Reserve growth is defined as the increase in successive estimates of recoverable crude oil, natural gas, and natural gas liquids and condensates in discovered fields. Reserves grow for a variety of reasons including advances in drilling/production technology, advances in exploration technology (such as 3-D and 4-D seismic), and advances in our geologic and engineering understanding of the petroleum reservoirs. Analysis of recent exploration and production data shows that, worldwide, petroleum (both crude oil and natural gas) volumes added to reserves by reserve growth are greater than the volumes of new-field discoveries.

Version 1.0

Posted October 2005

Part or all of this report is presented in Portable Document Format. The latest version of Adobe Acrobat Reader or similar software is required to view it. If you wish to download the latest version of Acrobat Reader free of charge, click here.


For viewing and printing upon download.

For on-line viewing.
(This version of the report is accessible as defined in Section 508 of the Rehabilitation Act of 1973, Amendments of 1998.)

USA.gov logo  Take Pride in America button