Gas Storage Fields
Field name: Colony ; Operated by Williams Gas Pipeline Central
Located in: Anderson County

Reservoir discovered: 1921 ; Year Activated: 1953 ; Active?: Yes

Storage Type: Depleted Reservoir
Original Contents: Gas ; Original Pressure: 280 (psig); Original reserves: 9204 (mmcf)

Formation Name: Colony Sd.
Storage Lithology: Sandstone
Gross Thickness: 47 (feet)
Trap Type: Structural/Stratigraphic
Formation Depth Maximum: 882 ; Minimum:

Injection or Withdrawl Wells: 79
Observation, Pressure Control Wells: 2
Compressor Horsepower: 24900
Pipe Diameter Maximum: 26 ; Minimum 4

Base Gas Volume: 8100 (mmcf)
Maximum Developed Gas Volume: 4600 (mmcf)
Maximum Storage Pressure: 433 (psig)
Maximum Daily Delverability: 149000 (mcf)
Maximum Designed Daily Volume: (mcf)
Annual Cycling Capability:
Undeveloped Capacity: 0 (mmcf)
Comments: Deliverability ties to maximum dependable daily withdrawal at a minimum inventory of base gas level plus one day's withdrawals. Compressor is shared between Colony, North Welda and South Welda.