Digital Petroleum Atlas
Eubank Field
General Information
Eubank Field Oil & Gas Data

General Field Information

Produces Oil: Yes Produces Gas: Yes
Exploration Method: The discovery well was located on a Permian anticlinal structure that was mapped by use of data from the Hugoton field wells.
Completion Practices: All the wells have been completed by setting casing through the pay and perforating. Both of the Mississippian oolitic limestone wells have required fracture treatment, and three of the five Chester sandstone wells have been fractured. All other producing zones have been acidized. Mississippian oil wells have been drilled on 80 acre spacing and allowables are 65 BOPD, with the average cost of a completed well being approximately $90,000.

Discovery Well(s)
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
01 MAR 1958 EUBANK 1
No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: NW NW NW 28-T28S-R34W
Rotary Total Depth: 5690
Production Zone: Mississippian-Chester Sandstone (Mississippian System)
Initial Oil Potential: 502 BOPD
Initial Formation Pressure: 1520
Data Source: DISCOVERY 1927
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
21 MAY 1958 J. D. G. STUCKY 1
No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: C SE NE 29-T28S-R34W
Rotary Total Depth: 5500
Production Zone: Mississippian-St. Genevieve Limestone
Initial Oil Potential: 152 BOPD
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
09 SEP 1958 SPRUNGER 'B' 1
No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: C SE SW 21-T28S-R34W
Rotary Total Depth: 5575
Production Zone: Cherokee Limestone
Initial Oil Potential: 64 BOPD
Initial Formation Pressure: 600
Comments: This is a dual completion well (4500' and 5025'). I decided the simplest way to enter this information was to enter the discovery well twice.
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
17 SEP 1958 SPRUNGER 'B' 1
No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: C SE SW 21-T28S-R34W
Rotary Total Depth: 5575
Production Zone: Lansing-Kansas City Limestone
Initial Oil Potential: 131 BOPD
Initial Formation Pressure: 1330
Comments: This is a dual completion well (4500' and 5025'). I decided the simplest way to enter this information was to enter the discovery well twice. Well originally entered in section 20 with producing zone "LKC Oil/Cher Oil [dual comp]".
Data Source: DISCOVERY 6385
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
29 OCT 1958 EUBANK 2
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: C SE NW 28-T28S-R34W
Rotary Total Depth: 5565
Production Zone: Lansing-Kansas City Limestone
Initial Gas Potential: 3,068,000 CFGPD
Initial Formation Pressure: 1105
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
14 JAN 1959 SPRUNGER 'C' 1
No Oil Production
No Digital LAS Files No Core Images No Core Data
Well Location: C SE SW 20-T28S-R34W
Rotary Total Depth: 5448
Production Zone: Marmaton Dolomite
Initial Oil Potential: 8 BPOD
Initial Gas Potential: 1,800,000 CFG
Initial Formation Pressure: 1200
Comments: The Red Book states the well was completed in December, 1958. The initial potential gas was reported as 1,800,000 CFG, which I concluded was 'cubic feet of gas'.
Data Source: DISCOVERY 6386
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
29 APR 1959 CLARK 'C' 1
No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: C SE NE 20-T28S-R34W
Rotary Total Depth: 5652
Production Zone: Morrow Sandstone
Initial Oil Potential: 145 BOPD
Initial Formation Pressure: 1185
Comments: Red book says completion was April, 1959.
Data Source: DISCOVERY 6387
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
06 NOV 1959 E. M. Gregg 3
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: C NW NW 4-T29S-R34W
Rotary Total Depth: 5555
Production Zone: Lansing - Kansas City Supergroup
Data Source: DISCOVERY 6388
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
01 DEC 1995 MLP BRUNO 2-34
No Oil Production
No Digital LAS Files No Core Images No Core Data
Well Location: SW NE 34-T29S-R34W
Rotary Total Depth: 5550
Production Zone: Mississippian System
Data Source: DISCOVERY 6389
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
07 MAY 1997 Clawson 1-4
No Digital LAS Files No Core Images No Core Data
Well Location: C SE SW 4-T29S-R34W
Rotary Total Depth: 5660
Production Zone: Atoka Oil and Gas & Morrow Gas
Data Source: DISCOVERY 6391

Summary Production Information

Field Size: 19360 acres
Total Wells: 495
Productive Oil Wells: 110 as of April 2024
Productive Gas Wells: 81 as of April 2024
Abandoned Wells: 59
Cumulative Oil: 25,956,117.39 bbls as of April 2024
Cumulative Gas: 78,159,996.00 mcf as of April 2024

Producing Formation:


MARMATON
(Marmaton Group)
Depth Top: 4692 feet
Formation Lithology: The reservoir zone varies from coarsely crystalline, white, limy dolomite in the discovery well to porous oolicastic limestone in adjacent wells. The zone thickness varies from 20 to 50 feet and is considered to be a reef-type limestone.
Trap Type: Predominantly structural.
Continuity of Reservoir Rocks: The Pennsylvanian productive zones are generally present over the Eubank field and may extend further with production depending more on favorable thickness, porosity and permeability conditions than on structure.

MARMATON (Marmaton Group)
Thickness
Thickness: 17 feet Maximum Thickness: 50 feet

MARMATON (Marmaton Group)
Oil & Gas Production Information
Produces Oil: Yes Produces Gas: Yes
Maximum Net Pay: 21 feet
Average Oil Column: 6 Average Gas Column: 19
Drive Mechanism: The zone probably has a combination of gas expansion, gas solution and water drives.
Proven Production: 880 acres

MARMATON (Marmaton Group)
Oil Chemistry
Average Oil API Gravity: 46

Producing Formation:


CHEROKEE
(Cherokee Group)
Depth Top: 4843 feet
Formation Lithology: The reservoir zone, which is white, chalky to granular, oolitic and oolicastic limestone, is present within a thicker dense limestone zone, and varies in thickness from 2 to 5 feet with an average thickness of 4 feet.
Trap Type: Structural.
Continuity of Reservoir Rocks: The Pennsylvanian productive zones are generally present over the Eubank field and may extend further with production depending more on favorable thickness, porosity and permeability conditions than on structure.

CHEROKEE (Cherokee Group)
Thickness
Maximum Thickness: 5 feet Average Thickness: 4 feet

CHEROKEE (Cherokee Group)
Oil & Gas Production Information
Produces Oil: Yes
Maximum Net Pay: 5 feet Average Net Pay: 4 feet
Average Oil Column: 25 Average Gas Column: 0
Drive Mechanism: The Cherokee oolitic limestone produces by solution gas drive.
Proven Production: 400 acres

CHEROKEE (Cherokee Group)
Oil Chemistry
Average Oil API Gravity: 35.8

Producing Formation:


MORROWAN
(Upper Kearny Member)
Depth Top: 5171 feet
Formation Lithology: The Morrow sandstone is fine, well-sorted, subangular, glauconitic, shaly, and in part calcareous. It is lenticular and varies in gross thickness from 7 to 26 feet within the field.
Trap Type: The Morrow sandstone reservoir is a stratigraphic-structural trap.
Continuity of Reservoir Rocks: The Pennsylvanian productive zones are generally present over the Eubank field and may extend further with production depending more on favorable thickness, porosity and permeability conditions than on structure.

MORROWAN (Upper Kearny Member)
Thickness
Thickness: 22 feet Maximum Thickness: 13 feet

MORROWAN (Upper Kearny Member)
Oil & Gas Production Information
Produces Oil: Yes
Maximum Net Pay: 26 feet Average Net Pay: 13 feet
Average Oil Column: 40
Drive Mechanism: Probably a solution gas drive.

MORROWAN (Upper Kearny Member)
Oil Chemistry
Average Oil API Gravity: 37.5
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