Digital Petroleum Atlas
Whelan Field
General Information


Whelan Field Oil & Gas Data

General Field Information

Produces Oil: Yes Produces Gas: Yes
Exploration Method: Mississippian: Random drilling Douglas Sand: Drill-stem testing of the zone while drilling a chat test on the edge of the pool. Elgin Sand: Operator was pulling pipe on a dry hole that blew out from the Elgin Sand.
Drilling Casing Practices: Up until the mid-1950s, the wells were completed naturally, but most of the wells that produced from the Mississippian were fractured later.

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
24 JUL 1934 Whelan 1
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: C NW 32-T31S-R11W
Rotary Total Depth: 4426
Production Zone: Mississippian
Initial Oil Potential: 231 BO in 18 hours
Comments: Productive zone: 4345 - 4382 The discovery well produced 50% water initially. The water production later indicated that the water drive was only partially effective.
Data Source: KOGF, Vol. I; DISCOVERY 152
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
02 JUN 1942 Swartz 1
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: C NW SE 31-T31S-R11W
Rotary Total Depth: 4619
Production Zone: Elgin Gas
Initial Gas Potential: 3.9 MCF
Perforations: 3313 - 3323
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
09 JUN 1953 Dryden 1
No Oil Production No Gas Production No Digital LAS Files No Core Images No Core Data
Well Location: SW SW SW 20-T31S-R11W
Rotary Total Depth: 4335
Production Zone: Douglas Gas
Initial Gas Potential: 1.8 MCF
Perforations: 3598 - 3606
Data Source: KOGF, Vol. I

Summary Production Information

Field Size: 4320 acres
Total Wells: 112
Productive Oil Wells: 15 as of May 2019
Productive Gas Wells: 21 as of May 2019
Abandoned Wells: 30
Cumulative Oil: 4,139,511.09 bbls as of May 2019
Cumulative Gas: 18,599,458.00 mcf as of May 2019

Producing Formation:


DOUGLAS
(Douglas Group)


Depth Top: 3598 feet
Formation Lithology: Medium to coarse white sand.
Trap Type: Pinchout of sand updip on a sharp northeast to southwest trending anticline.

DOUGLAS (Douglas Group)
Thickness

Maximum Thickness: 215 feet

DOUGLAS (Douglas Group)
Oil & Gas Production Information

Produces Gas: Yes
Average Oil Column: 0 Average Gas Column: 70
Drive Mechanism: Primary water drive
Water Production: The wells that produce from the Douglas Sand are water free.

DOUGLAS (Douglas Group)
Gas Chemistry

Minimum BTU: 1000

Producing Formation:


ELGIN
(Elgin Sandstone Member)


Formation Lithology: Medium to fine white sand
Trap Type: Pinchout of sand updip on a sharp northeast to southwest trending anticline.

ELGIN (Elgin Sandstone Member)
Thickness

Maximum Thickness: 100 feet

ELGIN (Elgin Sandstone Member)
Oil & Gas Production Information

Produces Gas: Yes
Average Oil Column: 0 Average Gas Column: 40
Drive Mechanism: Primary water drive
Water Production: The original wells were completed water free. By the early 1950s, wells were being plugged due to excessive water production.
Proven Production: 640 acres

ELGIN (Elgin Sandstone Member)
Gas Chemistry

Minimum BTU: 1000

Producing Formation:


MISSISSIPPIAN
(Mississippian System)


Depth Top: 4355 feet
Formation Lithology: White tripolitic to clean white bony chert with some green clay fill.
Trap Type: Stratigraphic; pinchout of porosity up regional dip

MISSISSIPPIAN (Mississippian System)
Thickness

Thickness: 27 feet Maximum Thickness: 150 feet

MISSISSIPPIAN (Mississippian System)
Oil & Gas Production Information

Produces Oil: Yes Produces Gas: Yes
Average Oil Column: 40 Average Gas Column: 10
Drive Mechanism: Gas actuated drive with a partial water drive.
Proven Production: 840 acres

MISSISSIPPIAN (Mississippian System)
Oil Chemistry

Average Oil API Gravity: 30

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