Keg River Oil and Gas, Assessment Unit 52430102
0
50
100
150
200
250
300
1920 1930 1940 1950 1960 1970 1980 1990 2000
DRILLING-COMPLETION YEAR
CU
M. N
EW
-FIE
LD
WIL
DC
AT
WE
LL
S (
No
.)
Keg River Oil and Gas, Assessment Unit 52430102
0
5
10
15
20
25
30
35
1921
1924
1927
1930
1933
1936
1939
1942
1945
1948
1951
1954
1957
1960
1963
1966
1969
1972
1975
1978
1981
1984
1987
1990
1993
DRILLING-COMPLETION YEAR
NE
W-F
IEL
D W
ILD
CA
T W
EL
LS
(N
o.)
Keg River Oil and Gas, Assessment Unit 52430102
0
1
10
100
1,000
0 10 20 30 40 50 60 70
OIL-POOL RANK BY SIZE
KN
OW
N O
IL-P
OO
L S
IZE
(M
MB
O)
First third of pools discovered
Second third of pools discovered
Third third of pools discovered
Keg River-Keg River Oil, Assessment Unit 52430102
0
20
40
60
80
100
120
0.5
to <
11
to <
22
to <
44
to <
88
to <
1616
to <
3232
to <
6464
to <
128
128
to <
256
256
to <
512
512
to <
1,02
4
1,02
4 to
<2,
048
2,04
8 to
<4,
096
4,09
6 to
<8,
192
8,19
2 to
<16
,384
16,3
84 to
<32
,768
32,7
68 to
<65
,536
65,5
36 to
<13
1,07
2
131,
072
to <
262,
144
>=26
2,14
4KNOWN OIL-POOL SIZE (MMBO)
NU
MB
ER
OF
PO
OL
S
Third third ofpoolsdiscovered
Second thirdof poolsdiscovered
First third ofpoolsdiscovered
Keg River Oil and Gas, Assessment Unit 52430102
0
50
100
150
200
250
0.5
to <
1
1 to
<2
2 to
<4
4 to
<8
8 to
<16
16 to
<32
32 to
<64
64 to
<12
8
128
to <
256
256
to <
512
512
to <
1,02
4
1,02
4 to
<2,
048
2,04
8 to
<4,
096
4,09
6 to
<8,
192
8,19
2 to
<16
,384
16,3
84 to
<32
,768
32,7
68 to
<65
,536
65,5
36 to
<13
1,07
2
131,
072
to <
262,
144
>=26
2,14
4
KNOWN OIL-POOL SIZE (MMBO)
VO
LU
ME
OF
OIL
(M
MB
O)
Keg River Oil and Gas, Assessment Unit 52430102
0
1
10
100
1,000
1920 1930 1940 1950 1960 1970 1980 1990 2000
POOL-DISCOVERY YEAR
KN
OW
N O
IL-P
OO
L S
IZE
(M
MB
O)
Keg River Oil and Gas, Assessment Unit 52430102
0
1
10
100
1,000
0 50 100 150 200 250 300
CUM. NEW-FIELD WILDCAT WELLS (No.)
KN
OW
N O
IL-P
OO
L S
IZE
(M
MB
O)
Keg River Oil and Gas, Assessment Unit 52430102
0
100
200
300
400
500
600
700
800
900
1,000
1920 1930 1940 1950 1960 1970 1980 1990 2000
POOL-DISCOVERY YEAR
CU
M. K
NO
WN
OIL
VO
LU
ME
(M
MB
O)
Keg River Oil and Gas, Assessment Unit 52430102
0
100
200
300
400
500
600
700
800
900
1,000
0 50 100 150 200 250 300
CUM. NEW-FIELD WILDCAT WELLS (No.)
CU
M. K
NO
WN
OIL
VO
LU
ME
(M
MB
O)
Keg River Oil and Gas, Assessment Unit 52430102
0
50
100
150
200
250
1920 1930 1940 1950 1960 1970 1980 1990 2000
POOL-DISCOVERY YEAR
CU
M. O
IL P
OO
LS
(N
o.)
Keg River Oil and Gas, Assessment Unit 52430102
0
50
100
150
200
250
0 50 100 150 200 250 300
CUM. NEW-FIELD WILDCAT WELLS (No.)
CU
M. O
IL P
OO
LS
(N
o.)
Keg River Oil and Gas, Assessment Unit 52430102
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
1920 1930 1940 1950 1960 1970 1980 1990 2000
POOL-DISCOVERY YEAR
OIL
-PO
OL
DE
PT
H (
m)
Keg River Oil and Gas, Assessment Unit 52430102
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
0 50 100 150 200 250 300
CUM. NEW-FIELD WILDCAT WELLS (No.)
OIL
-PO
OL
DE
PT
H (
m)
Keg River Oil and Gas, Assessment Unit 52430102
0
20
40
60
80
100
120
140
0 to <10 10 to<20
20 to<30
30 to<40
40 to<50
50 to<60
60 to<70
70 to<80
80 to<90
90 to<100
>=100
API GRAVITY (DEGREES)
OIL
PO
OL
S (
No
.)
Keg River Oil and Gas, Assessment Unit 52430102
1
10
100
1,000
0 5 10 15 20
GAS-POOL RANK BY SIZE
KN
OW
N G
AS
-PO
OL
SIZ
E (
BC
FG
)
First third of pools discovered
Second third of pools discovered
Third third of pools discovered
Keg River Oil and Gas, Assessment Unit 52430102
0
5
10
15
20
25
30
35
3 to
<6
6 to
<12
12 to
<24
24 to
<48
48 to
<96
96 to
<19
2
192
to <
384
384
to <
768
768
to <
1,53
6
1,53
6 to
<3,
072
3,07
2 to
<6,
144
6,14
4 to
<12
,288
12,2
88 to
<24
,576
24,5
76 to
<49
,152
49,1
52 to
<98
,304
98,3
04 to
<19
6,60
8
196,
608
to <
393,
216
393,
216
to <
786,
432
786,
432
to <
1,57
2,86
4
>=1,
572,
864
KNOWN GAS-POOL SIZE (BCFG)
GA
S P
OO
LS
(N
o.)
Third third ofpoolsdiscovered
Second thirdof poolsdiscovered
First third ofpoolsdiscovered
Keg River Oil and Gas, Assessment Unit 52430102
0
100
200
300
400
500
600
700
800
3 to
<6
6 to
<12
12 to
<24
24 to
<48
48 to
<96
96 to
<19
2
192
to <
384
384
to <
768
768
to <
1,53
6
1,53
6 to
<3,
072
3,07
2 to
<6,
144
6,14
4 to
<12
,288
12,2
88 to
<24
,576
24,5
76 to
<49
,152
49,1
52 to
<98
,304
98,3
04 to
<19
6,60
8
196,
608
to <
393,
216
393,
216
to <
786,
432
786,
432
to <
1,57
2,86
4
>=1,
572,
864
KNOWN GAS-POOL SIZE (BCFG)
VO
LU
ME
OF
GA
S (
BC
FG
)
Keg River Oil and Gas, Assessment Unit 52430102
1
10
100
1,000
1920 1930 1940 1950 1960 1970 1980 1990 2000
POOL-DISCOVERY YEAR
KN
OW
N G
AS
-PO
OL
SIZ
E (
BC
FG
)
Keg River Oil and Gas, Assessment Unit 52430102
1
10
100
1,000
0 50 100 150 200 250 300
CUM. NEW-FIELD WILDCAT WELLS (No.)
KN
OW
N G
AS
-PO
OL
SIZ
E (
BC
FG
)
Keg River Oil and Gas, Assessment Unit 52430102
0
200
400
600
800
1,000
1,200
1,400
1920 1930 1940 1950 1960 1970 1980 1990 2000
POOL-DISCOVERY YEAR
CU
M. K
NO
WN
GA
S V
OL
UM
E (
BC
FG
)
Keg River Oil and Gas, Assessment Unit 52430102
0
200
400
600
800
1,000
1,200
1,400
0 50 100 150 200 250 300
CUM. NEW-FIELD WILDCAT WELLS (No.)
CU
M. K
NO
WN
GA
S V
OL
UM
E (
BC
FG
)
Keg River Oil and Gas, Assessment Unit 52430102
0
10
20
30
40
50
60
1920 1930 1940 1950 1960 1970 1980 1990 2000
POOL-DISCOVERY YEAR
CU
M. G
AS
PO
OL
S (
No
.)
Keg River Oil and Gas, Assessment Unit 52430102
0
10
20
30
40
50
60
0 50 100 150 200 250 300
CUM. NEW-FIELD WILDCAT WELLS (No.)
CU
M. G
AS
PO
OL
S (
No
.)
Keg River Oil and Gas, Assessment Unit 52430102
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
1920 1930 1940 1950 1960 1970 1980 1990 2000
POOL-DISCOVERY YEAR
GA
S-P
OO
L D
EP
TH
(m
)
Keg River Oil and Gas, Assessment Unit 52430102
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
0 50 100 150 200 250 300
CUM. NEW-FIELD WILDCAT WELLS (No.)
GA
S-P
OO
L D
EP
TH
(m
)
Keg River Oil and Gas, Assessment Unit 52430102
0
20
40
60
80
100
120
140
0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000
POOL DEPTH (m)
LIQ
UID
S/G
AS
, GA
S P
OO
LS
(B
L/M
MC
FG
)
Keg River Oil and Gas, Assessment Unit 52430102Volumes of Discovered Petroleum
[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. MMBNGL, million barrels of natural gas liquids. Pools containing less than 0.5 MMBO inoil pools or 3 BCFG in gas pools were not considered in the assessment. Pools were classified as oil or gas by the USGS. Pools without reported
discovery dates were not included. NA means not applicable and is shown for volumes where only one pool is present and for grown volumes. Growthfunctions were not applied to pool sizes. Calculated values may not be equal to the sums of the component values because numbers have been
independently rounded.]
Known (Discovered) Volumes Grown (Discovered) VolumesPool Type Number Number
of Pools Oil (MMBO) Gas (BCFG) NGL (MMBNGL) of Pools Oil (MMBO) Gas (BCFG) NGL (MMBNGL)
Oil Pools 198 914 0 40 NA NA NA NAGas Pools 56 0 1,219 53 NA NA NA NA
Pools <0.5 MMBOE 459 97 42 7 NA NA NA NA
All Pools 713 1,011 1,262 100 NA NA NA NA
Page 1
Keg River Oil and Gas, Assessment Unit 52430102Discovery-History Sequence
[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. Fields containing less than 0.5 MMBO in oil pools or 3 BCFG in gas poolswere not considered in the assessment. Pools were classified as oil or gas by the USGS. The first half or third shows year of first pool
discovery as well as end of period. NA means not applicable and is shown where fewer than four fields are present. Growth functions werenot applied to pool sizes and no tables showing the discovery-history sequence for grown volumes were made.]
Discovery-History Sequence - Known (Discovered) VolumesPoolType Year Number of Total Mean Median
(End of Period) Pools Volume Size Size
Oil Pools Known Sizes (MMBO)First third 1965-1968 66 648 10 2Second third 1970 66 77 1 1Third third 1993 66 189 3 1
All Oil Pools 198 914 5 1Gas Pools Known Sizes (BCFG)
First third 1954-1969 19 140 7 6Second third 1983 19 544 29 5Third third 1994 18 536 30 8
All Gas Pools 56 1,219 22 6
Page 2