Digital Petroleum Atlas
Harper Ranch Field
General Information
Harper Ranch Field Oil & Gas Data

General Field Information

Produces Oil: Yes Produces Gas: Yes
Exploration Method: Regional subsurface studies
Drilling Casing Practices: The various sands usually are well tested during drilling. Normal practice is to drill into the Mississippian lime about 50 feet and set oil string at, or close to, the total depth. The casing is perforated and, if necessary, small treatments of mud acid are used, followed by small fracturing treatments. Completion information indicates that 3 out of 4 wells have received 500 to 1500 gallon fracture treatments.

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
08 JUN 1953 JESS C. HARPER 1
No Digital LAS Files No Core Images No Core Data
Well Location: NW SE 9-T34S-R21W
Rotary Total Depth: 5533
Production Zone: MORROW OIL AND GAS
Initial Gas Potential: 6000
Perforations: Morrow
Comments: Well API 15-025-00090
Data Source: KOGF Vol. I; DISCOVERY 632
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
17 FEB 1954 J. C. HARPER 1
No Digital LAS Files No Core Images No Core Data
Well Location: C NW SE 10-T34S-R21W
Rotary Total Depth: 5550
Production Zone: Lower Pennsylvanian Sand
Initial Oil Potential: 81 BOPD
Perforations: 5464 - 5476 Lower Pennsylvanian Sand
Treatments: Fractured through perforations
Comments: Well API 15-025-10144
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 JAN 1962 Folks 1
No Digital LAS Files No Core Images No Core Data
Well Location: SW NE SW 16-T33S-R21W
Rotary Total Depth: 5444
Production Zone: Mississippian System
Data Source: DISCOVERY 9118
Discovery Date Well Name Available Well Data Oil Production Gas Production LAS File Viewer with Core Data Plots Core Image Core Data Table
01 JUL 1982 Wilson 1
No Digital LAS Files No Core Images No Core Data
Well Location: S2 SW SW 4-T33S-R21W
Rotary Total Depth: 5048
Production Zone: Lansing - Kansas City Supergroup
Data Source: DISCOVERY 9119

Summary Production Information

Field Size: 19680 acres
Total Wells: 168
Productive Oil Wells: 53 as of July 2024
Productive Gas Wells: 20 as of July 2024
Abandoned Wells: 68
Cumulative Oil: 5,145,387.03 bbls as of July 2024
Cumulative Gas: 64,035,407.00 mcf as of July 2024

Producing Formation:


LANS.-K.C.
(Lansing - Kansas City Supergroup)
Depth Top: 4919 feet

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

LANS.-K.C. (Lansing - Kansas City Supergroup)
Oil & Gas Production Information
Produces Oil: Yes

Producing Formation:


MORROWAN
(Upper Kearny Member)
Depth Top: 5437 feet
Trap Type: The production seems to be the result of stratigraphic traps in an embayment where offshore sand bars have been built up. Proximity to local structure seems to have considerable effect on character and thickness of sands and the size of the wells. From the top of the first sand to the top of the Mississippian, the interval ranges from 65 feet in the Sinclair-Laura gas well (C NW SE, 33S-21W-22), to 142 feet in the Sunray-Harper well ( 34S-21W-21). In the central part of the pool there are as many as four sands, the topmost of which carries small quantities of gas and is normally a rather fine angular to subangular micaceous tightly cemented sand. This sand, though thin, is quite consistent. Core analysis shows poor permeability and 5% to 9% porosity. The second sand has been the most consistent, the thickest, and the most productive. It ranges from a few feet to 32 feet in thickness. The sand is coarser, better scored, cleaner, and has as much as 27% calculated porosity. Bottom hole pressures range from 1600 to 1900 pounds. Core analysis shows 10% to 26.5% porosity with permeability ranging from 25 to 250 millidarcys with about 45% water and about 17% oil. The third sand is limited in thickness and extent, is normally quite tight, and carries smaller amounts of oil and gas. The fourth sand, although very erratic in distribution, becomes well-rounded in character and carries both oil and water in wells tested prior to 1957. Core analysis shows as high as 22% porosity with the pay section varying from 50 to 1010 millidarcys permeability, water content up to 68% and residual oil saturation from 4% to 9%. The overall sand thickness ranges from about 12 to 15 feet in smaller wells to 50 to 55 feet in the better wells. The sand lenses are separated by black-shale breaks and the lenses seem to silt out or shale out on the east and west limits of production.

MORROWAN (Upper Kearny Member)
Thickness
Thickness: 15 feet

MORROWAN (Upper Kearny Member)
Oil & Gas Production Information
Produces Oil: Yes Produces Gas: Yes
Gas Oil Ratio: 134,000 to 1 on 31/64 inch choke Drive Mechanism: Gas and gas in solution
Water Production: The second sand produces very little if any water. The fourth sand, which is separated from the Mississippian by a thin shale break, has indicated water on a drill stem test and on one well in which it was perforated.

MORROWAN (Upper Kearny Member)
Gas Chemistry
Specific Gravity: .637

MORROWAN (Upper Kearny Member)
Oil Chemistry
Minimum Oil API Gravity: 36 Maximum Oil API Gravity: 39 %

Producing Formation:


MISSISSIPPIAN
(Mississippian System)

MISSISSIPPIAN (Mississippian System)
Oil & Gas Production Information
Produces Oil: Yes Produces Gas: Yes
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