Historic Oil Field
Dale Consolidated lies near the deep centre of the Illinois Basin, spread across parts of Hamilton, Franklin and Saline counties in the southern Illinois coal and oil country. The name tells the story: several separately discovered pools around the town of Dale were eventually mapped as one continuous field and consolidated administratively. Production comes from Mississippian pay — Aux Vases sandstone and O’Hara limestone among the principal zones — and the field has been carried by waterflood for most of its life. Today it is mature stripper territory with widely divided royalty ownership.
The Illinois oil boom of 1937 to 1940 remade the southern half of the state, and Dale came in at the end of that run. Reflection seismic and systematic subsurface mapping, both relatively new tools, guided much of the drilling, and operators worked outward from initial discoveries until adjoining pools proved continuous. Consolidation of those pools into a single named field followed. Farmland across three counties was leased quickly, and the mineral reservations made during that period underpin the fractional ownership recorded in county courthouses today.
Flush production ran through the 1940s, and Illinois briefly returned to prominence as a producing state. The Mississippian sands and limestones of the Chesterian and Valmeyeran sections proved thick and continuous enough in places to support development on regular spacing, and the field accumulated the dense record of logs, cores and production data that Illinois Basin reservoirs are known for. Operatorship moved steadily from the larger companies that opened the basin toward Illinois independents who understood the local reservoirs better than anyone.
Secondary recovery arrived early by national standards. Waterflooding of the Aux Vases and associated pay swept oil the primary wells had bypassed, and it has carried the field ever since. Water cuts in mature Illinois Basin floods now run very high, meaning wells lift a great deal of water for each barrel of oil, and that ratio sets the economic floor. Dale Consolidated today is a working stripper field: many wells, small volumes, and small royalty checks that have arrived steadily for decades.
Dale Consolidated produces from Mississippian reservoirs near the deep part of the Illinois Basin. The Aux Vases Sandstone is the principal clastic pay, a shallow-marine and tidal sand whose quality depends on how well the individual sand bodies were developed and preserved. The O’Hara is a limestone interval within the underlying Ste. Genevieve section that produces where porosity is developed. Traps combine gentle structural closure with stratigraphic pinch-outs, which is why reservoir performance varies sharply from lease to lease within a single consolidated field.
Waterflooding is the reason this field has produced for more than eighty years. Injected water sweeps oil through the Aux Vases sandstone and associated pay toward producing wells, and the Illinois Basin’s long flood history means operators here understand these reservoirs unusually well. Water cuts are now very high, which is the practical constraint on economics. Chemical methods such as alkaline-surfactant-polymer flooding have been evaluated for Illinois Basin sandstones, but deployment has been limited and selective, and no owner should assume their lease is a candidate.
Illinois Basin royalty is a duration asset rather than a growth asset. Dale Consolidated interests are typically small, decades old, and attached to leases whose economics turn on water handling costs and injection support rather than on new drilling. A generic multiple applied to last month’s check will not capture that, and a consolidated field makes it more important to identify which pool and which lease actually pay you. We buy minerals and royalties in Hamilton, Franklin and Saline counties and provide free written offers.
County-level well data, production charts, and selling guides for the counties this field spans:
It means separately discovered pools were later determined to be part of one continuous accumulation and were merged into a single named field. Several Illinois Basin fields carry the term. For owners it matters because your lease may date from one of the original pools while your payments are administered under the consolidated field.
Mature Illinois Basin waterfloods produce increasing volumes of water for each barrel of oil, so gross fluid can hold steady while oil volumes fall. Add ordinary decline and periodic shut-ins and checks trend downward. It is normal for a field of this age and is one of the main things buyers weigh when valuing a flood interest.
Your division order or check detail shows the decimal you are paid on, and the county recorder’s records show the underlying conveyances. Interests from the 1937 to 1940 boom have often been divided repeatedly, so the original reservation may bear little resemblance to what you hold. We reconstruct these chains for owners at no charge.