The St. Louis field — named for the small Pottawatomie County community, not the Missouri city — is generally reckoned the largest of the Wilcox pools inside the Greater Seminole area, and one of six fields there that Oklahoma counts among its giants. It came in during the 1926 rush and spans the Pottawatomie-Seminole county line. Like its neighbours, it was drained hard during a few furious years and has spent the ninety since as a low-rate, waterflood-supported field with heavily fragmented royalty ownership.
The Fixico No. 1 opened the district on July 16, 1926, hitting the Wilcox sand at 4,073 feet, and within months operators had proved up a series of pools across Seminole and Pottawatomie counties. St. Louis was among them and grew to be the largest. Its development had all the features of the era: wells crowded onto small tracts, a boom-camp economy on the section-line roads, and leasing conducted at a pace that left an enormous number of separate agreements behind for later generations to untangle.
The district as a whole produced 702,157,800 barrels between 1926 and 1936 — roughly 18 percent of Oklahoma’s total for that decade — against original reserves the state puts near 822 million barrels. That volume, arriving alongside the Oklahoma City discovery and then East Texas, drove crude prices to levels that made regulation unavoidable. Oklahoma’s proration and spacing framework was built in direct response to what happened at St. Louis and its neighbours, and it shaped how every later Mid-Continent field was developed.
Once the flush production was gone, St. Louis followed the standard course of a Mid-Continent sandstone field. Operators injected water to re-pressure the Wilcox and sweep oil the early wells had bypassed, well counts stayed high while individual rates fell into the single digits, and ownership of the leases passed from majors to independents to small operators specializing in marginal production. The pools remain on the pump today, producing modest volumes and paying correspondingly modest royalties across a very large number of interests.
St. Louis produces principally from the Wilcox sand of the Ordovician Simpson Group, a deep, clean quartz sandstone that gave the entire Greater Seminole district its extraordinary initial rates, with shallower Pennsylvanian pay including the locally named Earlsboro sand on many leases. Traps combine anticlinal closure over the southern Cherokee Platform with changes in sand thickness and continuity. Because pay quality varies laterally and more than one horizon may be present, division-order records here are frequently layered and lease results within the field differ considerably.
Water injection has been the field’s second act. Produced brine returned to the Wilcox and shallower sands maintains pressure and sweeps oil toward producing wells, converting what would otherwise have been a terminal decline into a long, shallow one. The practical effect for an owner is duration: flood-supported leases can pay for decades at a few barrels a day per well. It also means that operator investment matters — injector conversions, pattern realignments and workovers can raise a lease’s output long after the field appears to be finished.
St. Louis interests are the classic Oklahoma heirloom: fractions of 1926 leases, divided at each death, often held by owners several states away who have never seen the ground. They pay small amounts reliably, and their value turns on injection support and operator quality rather than on the field’s size in the history books. We evaluate lease by lease, handle the probate and heirship research ourselves, and buy direct. We buy minerals and royalties in Pottawatomie and Seminole counties and provide free written offers.
County-level well data, production charts, and selling guides for the counties this field spans:
No. The field takes its name from the small community of St. Louis in Pottawatomie County, Oklahoma. It is one of the Wilcox sand pools of the Greater Seminole area, and it has nothing to do with the Missouri city beyond the shared name.
It is generally described as the largest of the Greater Seminole pools. The area as a whole produced more than 700 million barrels between 1926 and 1936, about 18 percent of Oklahoma’s output for that decade, and Oklahoma counts six giant fields within it, of which St. Louis is one.
It means your tract has been committed to a unit, and you share in total unit production according to a participation factor rather than being paid on wells drilled on your land. Unit terms materially affect value, so when we evaluate an interest here we ask for the unit agreement or a recent check detail before quoting.