Digital Petroleum Atlas
Whelan Field
General Information
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Digital Petroleum Atlas |
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| Whelan Field Oil & Gas Data | |||
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General Field Information | |
| 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. |
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| 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) |
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| Discovery Date | Well Name | Available Well Data | Oil Production | Gas Production | LAS File Viewer with Core Data Plots | Core Image | Core Data Table |
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| 24 JUL 1934 | Whelan 1 | 
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No Oil Production | No Gas Production | No Digital LAS Files | No Core Images | No Core Data |
| Well Location: | C NW 32-T31S-R11W |
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| 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 |
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| 02 JUN 1942 | Swartz 1 |
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No Oil Production | No Gas Production | No Digital LAS Files | No Core Images | No Core Data |
| Well Location: | C NW SE 31-T31S-R11W |
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| 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 |
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| 09 JUN 1953 | Dryden 1 |
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No Oil Production | No Gas Production | No Digital LAS Files | No Core Images | No Core Data |
| Well Location: | SW SW SW 20-T31S-R11W |
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| 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 July 2025 |
| Productive Gas Wells: | 21 as of July 2025 |
| Abandoned Wells: | 30 |
| Cumulative Oil: | 4,187,164.17 bbls as of July 2025 |
| Cumulative Gas: | 19,281,607.00 mcf as of July 2025 |
Producing Formation:DOUGLAS |
| 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) |
| Maximum Thickness: | 215 feet |
DOUGLAS (Douglas Group) |
| 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) |
| Minimum BTU: | 1000 |
Producing Formation:ELGIN |
| 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) |
| Maximum Thickness: | 100 feet |
ELGIN (Elgin Sandstone Member) |
| 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) |
| Minimum BTU: | 1000 |
Producing Formation:MISSISSIPPIAN |
| 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: | 27 feet | Maximum Thickness: | 150 feet |
MISSISSIPPIAN (Mississippian System) |
| 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) |
| Average Oil API Gravity: | 30 |
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