espirito santo shelf, assessment unit 60340101 · espirito santo shelf, assessment unit 60340101 0...

Espirito Santo Shelf, Assessment Unit 60340101

0

20

40

60

80

100

120

140

160

180

200

1960 1965 1970 1975 1980 1985 1990 1995 2000

DRILLING-COMPLETION YEAR

CU

M. N

EW

-FIE

LD

WIL

DC

AT

WE

LL

S (

No

.)


0

2

4

6

8

10

12

14

16

18

20

1968

1970

1972

1974

1976

1978

1980

1982

1984

1986

1988

1990

1992

1994


NE

W-F

IEL

D W

ILD

CA

T W

EL

LS

(N

o.)


1

10

100

0 1 2 3 4 5 6

OIL-FIELD RANK BY SIZE

KN

OW

N O

IL-F

IEL

D S

IZE

(M

MB

O)

First third of fields discovered

Second third of fields discovered

Third third of fields discovered


0

1

2

3

4

5

6

7

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-FIELD SIZE (MMBO)

OIL

FIE

LD

S (

No

.)

Third third offieldsdiscovered

Second thirdof fieldsdiscovered

First third offieldsdiscovered


0

5

10

15

20

25

30

35

40

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-FIELD SIZE (MMBO)

VO

LU

ME

OF

OIL

(M

MB

O)


1

10

100

1960 1965 1970 1975 1980 1985 1990 1995 2000

FIELD-DISCOVERY YEAR

KN

OW

N O

IL-F

IEL

D S

IZE

(M

MB

O)


1

10

100

0 20 40 60 80 100 120 140 160 180 200

CUM. NEW-FIELD WILDCAT WELLS (No.)

KN

OW

N O

IL-F

IEL

D S

IZE

(M

MB

O)


0

20

40

60

80

100

120

140

160

180

200

1960 1965 1970 1975 1980 1985 1990 1995 2000


CU

M. K

NO

WN

OIL

VO

LU

ME

(M

MB

O)


0

20

40

60

80

100

120

140

160

180

200

0 20 40 60 80 100 120 140 160 180 200


CU

M. K

NO

WN

OIL

VO

LU

ME

(M

MB

O)


0

2

4

6

8

10

12

14

16

18

1960 1965 1970 1975 1980 1985 1990 1995 2000


CU

M. O

IL F

IEL

DS

(N

o.)


0

2

4

6

8

10

12

14

16

18

0 20 40 60 80 100 120 140 160 180 200


CU

M. O

IL F

IEL

DS

(N

o.)


0

500

1,000

1,500

2,000

2,500

3,000

1960 1965 1970 1975 1980 1985 1990 1995 2000


RE

SE

RV

OIR

DE

PT

H, O

IL F

IEL

DS

(m

)


0

500

1,000

1,500

2,000

2,500

3,000

0 20 40 60 80 100 120 140 160 180 200


RE

SE

RV

OIR

DE

PT

H, O

IL F

IEL

DS

(m

)


0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

0 500 1,000 1,500 2,000 2,500 3,000

MEAN RESERVOIR DEPTH (m)

GA

S/O

IL, O

IL F

IEL

DS

(C

FG

/BO

)


0

1

2

3

4

5

6

7

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)

RE

SE

RV

OIR

S IN

OIL

FIE

LD

S (

No

.)


0

20

40

60

80

100

120

140

160

180

200

1960 1965 1970 1975 1980 1985 1990 1995 2000


CU

M. N

EW

-FIE

LD

WIL

DC

AT

WE

LL

S (

No

.)


0

2

4

6

8

10

12

14

16

18

20

1968

1970

1972

1974

1976

1978

1980

1982

1984

1986

1988

1990

1992

1994


NE

W-F

IEL

D W

ILD

CA

T W

EL

LS

(N

o.)


1

10

100

0 1 2 3 4 5 6 7 8

OIL-FIELD RANK BY SIZE

GR

OW

N O

IL-F

IEL

D S

IZE

(M

MB

O)

First third of fields discovered

Second third of fields discovered

Third third of fields discovered


0

1

2

3

4

5

6

7

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

GROWN OIL-FIELD SIZE (MMBO)

OIL

FIE

LD

S (

No

.)

Third third offieldsdiscovered

Second thirdof fieldsdiscovered

First third offieldsdiscovered


0

10

20

30

40

50

60

70

80

90

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

GROWN OIL-FIELD SIZE (MMBO)

VO

LU

ME

OF

OIL

(M

MB

O)


1

10

100

1960 1965 1970 1975 1980 1985 1990 1995 2000


GR

OW

N O

IL-F

IEL

D S

IZE

(M

MB

O)


1

10

100

0 20 40 60 80 100 120 140 160 180 200


GR

OW

N O

IL-F

IEL

D S

IZE

(M

MB

O)


0

20

40

60

80

100

120

140

160

180

200

1960 1965 1970 1975 1980 1985 1990 1995 2000


CU

M. G

RO

WN

OIL

VO

LU

ME

(M

MB

O)


0

20

40

60

80

100

120

140

160

180

200

0 20 40 60 80 100 120 140 160 180 200


CU

M. G

RO

WN

OIL

VO

LU

ME

(M

MB

O)


0

5

10

15

20

25

1960 1965 1970 1975 1980 1985 1990 1995 2000


CU

M. O

IL F

IEL

DS

(N

o.)


0

5

10

15

20

25

0 20 40 60 80 100 120 140 160 180 200


CU

M. O

IL F

IEL

DS

(N

o.)


0

500

1,000

1,500

2,000

2,500

3,000

1960 1965 1970 1975 1980 1985 1990 1995 2000


RE

SE

RV

OIR

DE

PT

H, O

IL F

IEL

DS

(m

)


0

500

1,000

1,500

2,000

2,500

3,000

0 20 40 60 80 100 120 140 160 180 200


RE

SE

RV

OIR

DE

PT

H, O

IL F

IEL

DS

(m

)


0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

0 500 1,000 1,500 2,000 2,500 3,000

MEAN RESERVOIR DEPTH (m)

GA

S/O

IL, O

IL F

IEL

DS

(C

FG

/BO

)


0

1

2

3

4

5

6

7

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)

RE

SE

RV

OIR

S IN

OIL

FIE

LD

S (

No

.)

Espirito Santo Shelf, Assessment Unit 60340101Volumes of Discovered Petroleum

[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. MMBNGL, million barrels of natural gas liquids. Fields containing less than 1 MMBO in oilfields or 6 BCFG in gas fields were not considered in the assessment. Fields were classified as oil or gas by the USGS. Fields without reported discoverydates were not included. NA means not applicable and is shown for volumes where only one field is present. Calculated values may not be equal to the

sums of the component values because numbers have been independently rounded.]

Known (Discovered) Volumes Grown (Discovered) VolumesField Type Number Number

of Fields Oil (MMBO) Gas (BCFG) NGL (MMBNGL) of Fields Oil (MMBO) Gas (BCFG) NGL (MMBNGL)

Oil Fields 17 124 148 0 21 184 221 0Gas Fields 1 NA NA NA 1 NA NA NA

Fields <1 MMBOE 27 6 4 0 23 6 5 0

All Fields 45 130 172 0 45 190 255 0

Page 1

Espirito Santo Shelf, Assessment Unit 60340101Discovery-History Sequence

[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. Fields containing less than 1 MMBO in oil fields or 6 BCFG in gas fields werenot considered in the assessment. Fields were classified as oil or gas by the USGS. The first half or third shows year of first field discovery

as well as end of period. NA means not applicable and is shown where fewer than four fields are present.]

Discovery-History Sequence - Known (Discovered) VolumesFieldType Year Number of Total Mean Median

(End of Period) Fields Volume Size Size

Oil Fields Known Sizes (MMBO)First third 1969-1977 6 36 6 5Second third 1981 6 78 13 8Third third 1994 5 11 2 2

All Oil Fields 17 124 7 3Gas Fields Known Sizes (BCFG)

First third NA NA NA NA NASecond third NA NA NA NA NAThird third NA NA NA NA NA

All Gas Fields NA NA NA NA

Page 2

Espirito Santo Shelf, Assessment Unit 60340101Discovery-History Sequence

[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. Fields containing less than 1 MMBO in oil fields or 6 BCFG in gas fields werenot considered in the assessment. Fields were classified as oil or gas by the USGS. The first half or third shows year of first field discovery

as well as end of period. NA means not applicable and is shown where fewer than four fields are present.]

Discovery-History Sequence - Grown (Discovered) VolumesFieldType Year Number of Total Mean Median

(End of Period) Fields Volume Size Size

Oil Fields Grown Sizes (MMBO)First third 1969-1977 7 78 11 9Second third 1982 7 82 12 2Third third 1994 7 25 4 1

All Oil Fields 21 184 9 3Gas Fields Grown Sizes (BCFG)

First third NA NA NA NA NASecond third NA NA NA NA NAThird third NA NA NA NA NA

All Gas Fields NA NA NA NA

Page 3

espirito santo shelf, assessment unit 60340101 · espirito santo shelf, assessment unit 60340101 0...

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