North Slope Co.

Northwest Arctic Co.

140°W

140°W

142°W

142°W

144°W

144°W

146°W

146°W

148°W

148°W

150°W

150°W

152°W

152°W

154°W

154°W

156°W

156°W

158°W

158°W

160°W

160°W

162°W

162°W164°W166°W

72°N

71°N

70°N

70°N

69°N

69°N

68°N

AK

Index Map

The mapped oil and gas field boundary outlines were created by the Reserves and Production Division, Office of Oil and Gas, Energy Information Administration pursuant to studies required by Section 604 of the Energy Policy and Conservation Act Amendments of 2000 (P.L. 106-469). The boundaries are not informed by subsurface structural information. The data and methods used in their creationare detailed in a report, "Scientific Inventory of Onshore FederalLands' Oil and Gas Resources and Reserves and the Extent and Nature of Restrictions to Their Development", prepared by the USDepartments of Interior, Agriculture and Energy.Well data (bottom-hole locations) is from State of AK Oil & Gas Conservation Commission.Map created August 2005; projection is UTM-7, NAD-27.Authors: Sam Limerick (1), Lucy Luo (1), Gary Long (2), David Morehouse (2), Jack Perrin (1), Steve Jackson (1)and Robert King (2)(1) Z, Inc., (2) Energy Information Administration

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WALAKPA

BARROW

BARROW

BARROW

BARROW

156°20'0"W

156°20'0"W

156°30'0"W

156°30'0"W

156°40'0"W

156°40'0"W

156°50'0"W

156°50'0"W

157°0'0"W

157°0'0"W157°10'0"W157°20'0"W

156°10'0"W

71°20'0"N

71°15'0"N

71°15'0"N

71°10'0"N

71°10'0"N

71°5'0"N

North Alaska NPRA & ANWR 1002 AreasOil and Gas Fields By 2001 Gas Reserve Class

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COLVILLE RIVER

COLVILLE RIVER

150°50'0"W

150°50'0"W

150°55'0"W

150°55'0"W

151°0'0"W

151°0'0"W

151°5'0"W

151°5'0"W

151°10'0"W

151°10'0"W

151°15'0"W

151°15'0"W

151°20'0"W

151°20'0"W

151°25'0"W

151°25'0"W

151°30'0"W

151°30'0"W151°35'0"W

150°45'0"W

70°25'0"N

70°25'0"N

70°20'0"N

70°20'0"N

70°15'0"N

142°0'W

142°0'W

142°40'W

142°40'W

143°20'W

143°20'W

144°0'W

144°0'W

144°40'W

144°40'W

145°20'W

145°20'W

146°0'W

146°0'W146°40'W70°20'N

70°0'N

70°0'N

69°40'N

69°40'N

NPRAColville River Area

ANWR 1002 Area(No 2001 Reserves)

North Slope Regional

NPRABarrow Area

NPRAANWR

NPRA

Gas Reserve Class1,000.1 to 10,000 MMCF

10,000.1 to 100,000 MMCF

> 100,000 MMCF

Portions of Fields Outside of Study AreaWells

! OIL! GAS£, INJECTOR

Study Area Outlines

NPRA

0 2 41 3Miles

0 4 82 6Miles

0 10 205 15Miles

0 50 10025 75Miles

ANWR

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Total Total TotalNumber Liquid Gas BOE

of Reserves Reserves ReservesBasin Fields (Mbbl) (MMcf) (Mbbl)

N. Alaska NPRA 3 349,563 234,654 388,672N. Alaska ANWR -1002 0 0 0 0

U.S. EnergyInformationAdministration