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

General Field Information

Produces Oil: Yes Produces Gas: Yes
Exploration Method: Core drill
Drilling Casing Practices: Most of the producing wells that were completed before the mid 1950s were acidized.
Comments: Trap: Gentle northeast to southwest anticlinal structure plunging southwest on the same line of folding as the Cairo-Cunningham structure. Productive area is approximately 750 acres by water drive in all formations.

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
30 SEP 1935 REECE 1
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: W2 W2 SW 11-T26S-R9W
Rotary Total Depth: 4156
Production Zone: Viola Limestone Formation
Initial Oil Potential: 11,182 BOPD (Draw down)
Perforations: 4137 - 4156 Viola
Data Source: KOGF, Vol. I; DISCOVERY 4709
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
10 NOV 1937 SHEPHERD 1
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: NW NW NW 22-T26S-R9W
Rotary Total Depth: 4153
Production Zone: Lansing - Kansas City Supergroup
Initial Oil Potential: 173 BOPD
Perforations: 3535 - 3538 Lansing (short lived)
Data Source: KOGF, Vol. I; DISCOVERY 9047
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
15 DEC 1937 W.C. LAWSON 5
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: SW NE NW 15-T26S-R9W
Rotary Total Depth: 4005
Production Zone: Mississippian System
Initial Gas Potential: Gauged 561 MCFGPD
Data Source: KOGF, Vol. I; DISCOVERY 9048
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
15 JAN 1944 WYMAN 1
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: C NW NE SW 21-T26S-R9W
Rotary Total Depth: 4188
Production Zone: Viola
Initial Oil Potential: 93 BOPD before acid
Perforations: Viola 4177 - 4188
Comments: Well API 15-155-71382
Data Source: KOGF, Vol. I
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
02 AUG 1962 WOODSON-JUSTICE 1
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: NW SE 22-T26S-R9W
Rotary Total Depth: 3958
Production Zone: INDIAN CAVE, LANGDON, HOWARD, AND DOUGLAS GAS
Data Source: DISCOVERY 9049
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
17 MAR 1988 REECE 1
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: NE SE 11-T26S-R9W
Rotary Total Depth: 3750
Production Zone: LANSING-KANSAS CITY (H ZONE) GAS
Data Source: DISCOVERY 9050
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
13 MAY 1988 Whipple 1-23
No Digital LAS Files No Core Images No Core Data
Well Location: C NE 15-T26S-R9W
Rotary Total Depth: 4139
Production Zone: LANSING (H ZONE) GAS
Data Source: DISCOVERY 9051
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
BURROUGHS 1
No Oil Production
No Digital LAS Files No Core Images No Core Data
Well Location: C NE SW NE 11-T26S-R9W
Rotary Total Depth: 3918
Production Zone:
Initial Gas Potential: Gauged 1,475 MCFGPD
Initial Formation Pressure: 1207
Comments: Well API 15-155-02471 First sale of gas was in March 1951
Data Source: KOGF, Vol. I

Summary Production Information

Field Size: 9920 acres
Total Wells: 154
Productive Oil Wells: 30 as of October 2025
Productive Gas Wells: 56 as of October 2025
Abandoned Wells: 37
Cumulative Oil: 3,403,036.44 bbls as of October 2025
Cumulative Gas: 41,517,742.00 mcf as of October 2025

Producing Formation:


INDIAN CAVE
(Indian Cave Sandstone Bed)

INDIAN CAVE (Indian Cave Sandstone Bed)
Oil & Gas Production Information
Produces Gas: Yes

Producing Formation:


DOUGLAS
(Douglas Group)

DOUGLAS (Douglas Group)
Oil & Gas Production Information
Produces Gas: Yes

Producing Formation:


LANGDON
(Wamego Shale Member)

LANGDON (Wamego Shale Member)
Oil & Gas Production Information
Produces Gas: Yes

Producing Formation:


HOWARD
(Howard Limestone Formation)

HOWARD (Howard Limestone Formation)
Oil & Gas Production Information
Produces Gas: Yes

Producing Formation:


LANS.-K.C.
(Lansing - Kansas City Supergroup)
Depth Top: 3504 feet
Formation Lithology: Light buff, fine crystalline limestone, oolicastic in pay zone

LANS.-K.C. (Lansing - Kansas City Supergroup)
Thickness
Thickness: 4 feet Maximum Thickness: 450 feet

LANS.-K.C. (Lansing - Kansas City Supergroup)
Oil & Gas Production Information
Produces Oil: Yes Produces Gas: Yes
Average Oil Column: 3 Average Gas Column: 0
Drive Mechanism: Water drive.
Water Production: Discovery well made water initially.
Proven Production: 200 acres

Producing Formation:


MISSISSIPPIAN
(Mississippian System)
Depth Top: 3857 feet
Formation Lithology: White, weathered chert overlying white, coarse crystalline limestone.

MISSISSIPPIAN (Mississippian System)
Thickness
Maximum Thickness: 80 feet

MISSISSIPPIAN (Mississippian System)
Oil & Gas Production Information
Produces Oil: Yes Produces Gas: Yes
Average Oil Column: 0 Average Gas Column: 40
Drive Mechanism: Water drive.

MISSISSIPPIAN (Mississippian System)
Gas Chemistry
Maximum BTU: 1052
Nitrogen: 9.6 %
Methane: 78.31 % Butane: 1.07 % Ethane: 6.51 %
Propane: 3.45 % Pentane: .25 % Hextane: .12 %
ISO Pentane: .19 % ISO Butane: .5 %

Producing Formation:


VIOLA
(Viola Limestone Formation)
Depth Top: 4128 feet
Formation Lithology: Tan-buff, fine to medium crystalline dolomite with gray to light brown, opaque chert. Cherty dolomite on top.

VIOLA (Viola Limestone Formation)
Thickness
Maximum Thickness: 85 feet

VIOLA (Viola Limestone Formation)
Oil & Gas Production Information
Produces Oil: Yes
Average Oil Column: 10 Average Gas Column: 0
Drive Mechanism: Water drive.
Water Production: The discovery well was completed free of water. The water drive increased so rapidly that the entire pool was making water by October 1937.
Proven Production: 200 acres

VIOLA (Viola Limestone Formation)
Oil Chemistry
Average Oil API Gravity: 43.2
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