The enigma of oil and gas field growth
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Abstract
Growth in estimates of recovery in discovered fields is an important source of annual additions to United States proved reserves. This paper examines historical field growth and presents estimates of future additions to proved reserves from fields discovered before 1992. Field-level data permitted the sample to be partitioned on the basis of recent field growth patterns into outlier and common field sets, and analyzed separately. The outlier field set accounted for less than 15% of resources, yet grew proportionately six times as much as the common fields. Because the outlier field set contained large old heavy-oil fields and old low-permeability gas fields, its future growth is expected to be particularly sensitive to prices. A lower bound of a range of estimates of futu e growth was calculated by applying monotone growth functions computed from the common field set to all fields. Higher growth estimates were obtained by extrapolating growth of the common field set and assuming the outlier fields would maintain the same share of total growth that occurred from 1978 through 1991. By 2020, the two estimates for additions to reserves from pre-1992 fields are 23 and 32 billion bbl of oil in oil fields and 142 and 195 tcf of gas in gas fields.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The enigma of oil and gas field growth |
| Series title | American Association of Petroleum Geologists Bulletin |
| DOI | 10.1306/BDFF9096-1718-11D7-8645000102C1865D |
| Volume | 78 |
| Issue | 3 |
| Year Published | 1994 |
| Language | English |
| Publisher | American Association of Petroleum Geologists |
| Description | 12 p. |
| First page | 321 |
| Last page | 332 |
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