USGS Open-File Report 03-039

Table 1. Probability distribution of volumetric parameters for oil or gas in the Brookian Topset Play.

Attribute	Units	LTP*	F₅₀	F₀₅	Max
Net Reservoir Thickness	feet	25	50	75	200
Area of Closure	1000 acres	3	5	10	20
Trap Fill	percent	40	50	75	100
Porosity	percent	15	18	19	21
Porosity-Water Saturation Product	percent					6
Hydrocarbon Pore Volume	percent	9	12	13	15

		Min	F₅₀	F₀₅	Max
Trap Depth	1000 feet	1	5	9	10
Number of Prospects	number	25	50	75	100
Total Play Area	million acres					18.3

*LTP is lower truncation point for input distribution (see Scheunemeyer, this volume).

Table 2. Probability of occurrence for play and prospect in the Brookian Topset Play.

Play Attributes
Charge (C)	1.0
Trap (T)	1.0
Timing (F)	1.0
Play Probability (CxTxF)		1.00

Prospect Attributes
Charge (c)	0.6
Trap (t)	0.2
Timing (f)	1.0
Prospect Probability (CxTxF)		0.12

Play Probability x Prospect Probability		0.12

Fraction of Accumulations That Are Oil	0.9

Parameter	Units	Value
Oil Recovery Factor	percent	35
Non-Associated Gas Recovery Factor	percent	65
Oil Gravity	API degrees	37
Sulfur Content of Oil	weight percent	0.3
Gas-Oil Ratio at Median Depth	cubic feet per barrel	613

Table 4. Estimates of undiscovered, technically recoverable hydrocarbons in the Brookian Topset Play in NPRA. All values are rounded to the nearest whole number.

	Mean	Standard Deviation	F₉₅	F₅₀	F₀₅
Oil (mmbo)	239	125	61	223	465

Non-associated Gas (bcf)	192	253	0	0	679

Table 5. Probability distribution of volumetric parameters for oil (or gas) in Brookian Clinoform North Play.

Attribute	Units	LTP*	F₅₀	F₀₅	Max
Net Reservoir Thickness	feet	25	60	100	200
Area of Closure	1000 acres	3	5	15	30
Trap Fill	percent	80	100	100	100
Porosity	percent	12	18	19	21
Porosity-Water Saturation Product	percent					6
Hydrocarbon Pore Volume	percent	6	12	13	15

		Min	F₅₀	F₀₅	Max
Trap Depth	1000 feet	3	7	9	10
Number of Prospects	number	25	50	75	100
Total Play Area	million acres					6.8

*LTP is lower truncation point for input distribution (see Scheunemeyer, this volume).

Table 6. Probability of occurrence for play and prospect in the Brookian Clinoform North Play.

Play Attributes
Charge (C)	1.0
Trap (T)	1.0
Timing (F)	1.0
Play Probability (CxTxF)		1.00

Prospect Attributes
Charge (c)	0.9
Trap (t)	0.3
Timing (f)	1
Prospect Probability (CxTxF)		0.27

Play Probability x Prospect Probability		0.27

Fraction of Accumulations That Are Oil	0.9

Parameter	Units	Value
Oil Recovery Factor	percent	35
Non-Associated Gas Recovery Factor	percent	65
Oil Gravity	API degrees	37
Sulfur Content of Oil	weight percent	0.1
Gas-Oil Ratio at Median Depth	cubic feet per barrel	866

Table 8. Estimates of undiscovered, technically recoverable hydrocarbons in the Brookian Clinoform North Play in NPRA. All values are rounded to the nearest whole number.

	Mean	Standard Deviation	F₉₅	F₅₀	F₀₅
Oil (mmbo)	1,306	531	538	1,247	2,257

Non-associated Gas (bcf)	674	660	0	526	1,969

Table 9. Probability distribution of volumetric parameters for oil and gas in Brookian Clinoform Central Play.

Attribute	Units	LTP*	F₅₀	F₀₅	Max
Net Reservoir Thickness	feet	40	70	150	300
Area of Closure	1000 acres	4	6	18	35
Trap Fill	percent	80	100	100	100
Porosity	percent	10	16	19	20
Porosity-Water Saturation Product	percent					6
Hydrocarbon Pore Volume	percent	4	10	13	14

		Min	F₅₀	F₀₅	Max
Trap Depth (oil)	1000 feet	9	10	11	12
Trap Depth (gas)	1000 feet	10	12	13	14
Number of Prospects	number	30	55	80	110
Total Play Area	million acres					6.5

*LTP is lower truncation point for input distribution (see Scheunemeyer, this volume).

Table 10. Probability of occurrence for play and prospect in the Brookian Clinoform Central Play.

Play Attributes
Charge (C)	1.0
Trap (T)	1.0
Timing (F)	1.0
Play Probability (CxTxF)		1.00

Prospect Attributes
Charge (c)	0.9
Trap (t)	0.3
Timing (f)	1
Prospect Probability (CxTxF)		0.27

Play Probability x Prospect Probability		0.27

Fraction of Accumulations That Are Oil	0.5

Parameter	Units	Value
Oil Recovery Factor	percent	35
Non-Associated Gas Recovery Factor	percent	65
Oil Gravity	API degrees	37
Sulfur Content of Oil	weight percent	0.1
Gas-Oil Ratio at Median Depth	cubic feet per barrel	1198

Table 12. Estimates of undiscovered, technically recoverable hydrocarbons in the Brookian Clinoform Central Play in NPRA. All values are rounded to the nearest whole number.

	Mean	Standard Deviation	F₉₅	F₅₀	F₀₅
Oil (mmbo)	973	477	299	916	1,849

Non-associated Gas (bcf)	5,405	2,535	1,806	5,110	10,076

Table 13. Probability distribution of volumetric parameters for oil and gas in Brookian Clinoform South-Shallow Play.

Attribute	Units	LTP*	F₅₀	F₀₅	Max
Net Reservoir Thickness	feet	50	75	200	400
Area of Closure	1000 acres	5	7	20	40
Trap Fill	percent	80	100	100	100
Porosity	percent	10	14	18	20
Porosity-Water Saturation Product	percent					6
Hydrocarbon Pore Volume	percent	4	8	12	14

		Min	F₅₀	F₀₅	Max
Trap Depth (oil)	1000 feet	3	6	9	10
Trap Depth (gas)	1000 feet	6	10	13	14
Number of Prospects	number	20	40	60	100
Total Play Area	million acres					7.5

*LTP is lower truncation point for input distribution (see Scheunemeyer, this volume).

Table 14. Probability of occurrence for play and prospect in the Brookian Clinoform South-Shallow Play.

Play Attributes
Charge (C)	1.0
Trap (T)	1.0
Timing (F)	1.0
Play Probability (CxTxF)		1.00

Prospect Attributes
Charge (c)	0.7
Trap (t)	0.2
Timing (f)	1
Prospect Probability (CxTxF)		0.14

Play Probability x Prospect Probability		0.14

Fraction of Accumulations That Are Oil	0.5

Table 15. Oil and gas parameters for the Brookian Clinoform South-Shallow Play.

Parameter	Units	Value
Oil Recovery Factor	percent	30
Non-Associated Gas Recovery Factor	percent	65
Oil Gravity	API degrees	32
Sulfur Content of Oil	weight percent	1.2
Gas-Oil Ratio at Median Depth	cubic feet per barrel	617

Table 16. Estimates of undiscovered, technically recoverable hydrocarbons in the Brookian Clinoform South-Shallow Play in NPRA. All values are rounded to the nearest whole number.

	Mean	Standard Deviation	F₉₅	F₅₀	F₀₅
Oil (mmbo)	508	389	0	430	1,254

Non-associated Gas (bcf)	2,405	1,792	0	2,064	5,809

Table 17. Probability distribution of volumetric parameters for oil and gas in Brookian Clinoform South-Deep Play.

Attribute	Units	LTP*	F₅₀	F₀₅	Max
Net Reservoir Thickness	feet	50	75	200	400
Area of Closure	1000 acres	5	7	20	40
Trap Fill	percent	80	100	100	100
Porosity	percent	80	11	14	17
Porosity-Water Saturation Product	percent					6
Hydrocarbon Pore Volume	percent	2	5	8	11

		Min	F₅₀	F₀₅	Max
Trap Depth (gas)	1000 feet	11	15	20	24
Number of Prospects	number	30	50	80	120
Total Play Area	million acres					7.5

*LTP is lower truncation point for input distribution (see Scheunemeyer, this volume).

Table 18. Probability of occurrence for play and prospect in the Brookian Clinoform South-Deep Play.

Play Attributes
Charge (C)	1.0
Trap (T)	0.8
Timing (F)	1.0
Play Probability (CxTxF)		0.80

Prospect Attributes
Charge (c)	0.7
Trap (t)	0.2
Timing (f)	1
Prospect Probability (CxTxF)		0.14

Play Probability x Prospect Probability		0.11

Fraction of Accumulations That Are Oil	0

Table 19. Oil and gas parameters for the Brookian Clinoform South-Deep Play.

Parameter	Units	Value
Oil Recovery Factor	percent	na
Non-Associated Gas Recovery Factor	percent	65
Oil Gravity	API degrees	na
Sulfur Content of Oil	weight percent	na
Gas-Oil Ratio at Median Depth	cubic feet per barrel	na

Table 20. Estimates of undiscovered, technically recoverable hydrocarbons in the Brookian Clinoform South-Deep Play in NPRA. All values are rounded to the nearest whole number.

	Mean	Standard Deviation	F₉₅	F₅₀	F₀₅
Oil (mmbo)	na	na	na	na	na

Non-associated Gas (bcf)	3,788	2,843	0	3,707	8,796