Play: Morrow Basin: Anadarko County: Stevens County Gentzler Field--General Information

Summary of Field Data

Producing Formations:

Lower Morrow (Keyes)

Discovery Date:

October 6, 1971, Lower Morrow

Reservoir Parameters:

Lower Morrow, sandstone, 0 to 60 ft.

Reservoir Geometry:

Lower Morrow, upward coarsening shoreface deposits

Net Pay max/ave:

Lower Morrow, 60 ft. / 30 ft.

Porosity max/ave:

Lower Morrow, 20% / 14%

Permeability max/ave:

Lower Morrow, unknown

Water Saturation:unknown

Initial Field Pressure:

Lower Morrow, 1,739 psia, Dst Final Shut-in, Gentzler A 1

Temperature:

Lower Morrow, 140 degrees F

Drive Mechanism:

Lower Morrow, Gas Expansion & Edge Water

Produced Fluid Contacts:

Lower Morrow, Gas/OIl: (Variable), Oil/Water: (Variable)

Logging Practice:

Dual Induction - SFL, Spontaneous Potential, Gamma Ray

Compensated Neuton, LithoDensity

Long Spaced Sonic

MicroLog

Drilling-Casing Practice:

Surface Casing: 8.625 in set in 12.25 in. hole at 1700 ft. with 550 sacks of Poz "C"

Production Casing: 5.5 in. set in 7.875 in. hole at 6200 ft. two-staged through DV tool with 200 sacks of Poz "H"

Drilling Fluid Practice:

Water based gel to displacement point at 4000 ft.(Heebner Shale)

Chemical Gel to rotary total depth

Treatment Practice:

Lower Morrow: acidize with 3000 gals. of 7.5% Fe HCL containing additives

Lower Morrow: fracture with 25,000 gals. of CO2 foam and 25,000 lbs. of 20/40 sand