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Final Fracture Pressure Gradient Values

In 1992 and 1993, the Region 5 Underground Injection Control Program public noticed draft and final values for fracture pressure gradients for specific oil fields in Michigan. These values were published in the Federal Register in three groups. The column headed "FRN" indicates in which Federal Register Notice the final fracture pressure gradient (FPG) value for each field was published. (Internet-accessible copies of the Federal Register do not go back this far, so these notices are not viewable over the Internet at this time.)

County Field Formation Township/Range/Section FPG (psi/ft) FRN*
Bay Kawkawlin Dundee T15N, R4E, S27, 28, 33, 34 and T14N, R4E, S3 1.23 3
Calhoun Pennfield 35 Niagaran Reef T1S, R7W, S35 0.60 1
Clare Cranberry Lake Richfield T20N, R6W, S1, 2, 11, 12 1.10 1
Hamilton Richfield T19N, R3W, S5-8 and T19N, R4W, S1, 2 and T20N, R4W, S35,36 1.06 2
Crawford/Kalkaska Beaver Creek Richfield T25N, R5W, S12, 13, 24 and T25N, R4W, S7, 8, 16-21, 28, 29 1.07 1
Gladwin Beaverton Dundee T17N, R2W, S19 1.11 3
Bentley-Dundee Dundee T17N, R2E, S18, 19, 20 1.15 1
Billings:
Billings 2 Unit Dundee T17N, R1E, S2, 3, 10, 11 1.12 1
Billings-Bentley Unit T17N, R1E, S12, 13 and T17N, R2E, S18
Grout Richfield T18N, R2W, S10, 11, 14, 15 1.05 3
Ingham Aurelius 35 Niagaran Reef T2N, R2W, S26, 35, 36 0.65 1
Ingham 13 Salina-Niagaran T2N, R1E, S13 0.76 1
Onondaga 10 Salina-Niagaran T1N, R2W, S2-4, 10, 11, 14 0.61 1
Onondaga 21A A-1 Carbonate (Salina) T1N, R2W, S15-17, 21, 22 0.81 3
Isabella North Wise Dundee T16N, R3W, S17 1.12 3
Kalkaska Kalkaska "21" Salina-Niagaran T27N, R8W, S22 0.92 1
Lapeer Richfield Richfield T10N, R10E, S21-23, 26-28, 33-35 1.09 3
Manistee Manistee Niagaran T22N, R17W, S36 0.82 2
Bear Lake Niagaran T23N, R15W, S12 0.58 3
Missaukee Enterprise Richfield T23N, R4W, S18 and T23N, R5W, S10-14 1.10 2
East Norwich Richfield T24N, R5W, S1-3, 9-16, 21, 22 and T24N, R4W, S6, 7, 18 1.14 2
Falmouth Richfield T22N, R6W, S30, 31 and T22N, R7W, S25, 36 1.10 3
Ogemaw Rose City:
Rose City Unit Richfield T23, 24N, R2E, S3, 19-21, 27-30, 32-35 1.07 1
Rose City Central Unit T24N, R1E, 2E, S25
Rose City West Unit T24N, R1E, S21
West Branch:
West Branch Unit (excluding West Branch 28: see below) Dundee T21N, R2E, S2 and T22N, R2E, S21, 26, 27, 33-36 and all of S28 except the S/2 of the NW/4 1.15 2
Country Club Unit T22N, R1E, S13, 24 and T22N, R2E, S18-21, 29
West Branch 28 Dundee T22N, R2E, S28, S/2 of NW/4 1.25 3
Otsego Chester:
Chester 18 Unit A1 Carbonate & Niagaran T30N, R2W, S7, 8, 17, 18, 19, 20 0.99 1
Chester 21 Unit T30N, R2W, S21, 22 0.78 1
Hayes:
Hayes 15 Unit Salina-Niagaran T29N, R4W, S15 0.67 1
Hayes 21A Unit T29N, R4W, S21, 28
Roscommon Headquarters:
Headquarters Unit Richfield T21N, R3W, S19, 29, 30 1.22 1
Headquarters-Sour Unit T21N, R3W, S29, 30, 32, 33
St. Helen Richfield T24N, R1W, S16, 19-21, 27-30 1.16 2
St. Clair Columbus 3 Niagaran T5N, R15E, S3, 10 and T6N, R15E, S34 0.79 1
*FRN = Federal Register Notice:
Ref. No. Page Date
1 FR57 (247): 61084 12/23/92
2 FR 58 (224): 61910 11/23/93
3 FR 58 (240): 65711 12/16/93
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