Discovery Facts

County: Scurry County, Texas

Year of discovery: 1948

Producing formation: Pennsylvanian Canyon Reef carbonate

EOR distinction: Pioneering CO₂-flood unit (since 1972)

Modern operator: Kinder Morgan CO₂ Company

Modern field name: SACROC Unit (Scurry Area Canyon Reef Operators Committee)

The Pennsylvanian Reef Discovery

The 1948 Kelly-Snyder discovery in Scurry County, Texas, opened the Pennsylvanian Canyon Reef play of the Eastern Shelf Permian Basin. The reservoir is a buildup of Pennsylvanian-age carbonate reef material — geologically distinct from the much more common Permian San Andres / Grayburg carbonates that anchor the Central Basin Platform (Yates) and the Northern Shelf (Wasson + Slaughter) giants.

The Kelly-Snyder field grew into one of the largest oil fields ever discovered in West Texas, with cumulative production well into the billions of barrels.

The SACROC Unit and CO₂ Flood

In 1953, the Scurry Area Canyon Reef Operators Committee (SACROC) was formed to consolidate the fragmented operating positions on the Kelly-Snyder field into a single unit. The SACROC Unit became one of the most consequential unit consolidations in U.S. oil history.

In 1972, SACROC began one of the world’s first commercial-scale CO₂ flood enhanced-oil-recovery programs. The CO₂ flood approach — injecting carbon dioxide into the reservoir to mobilize residual oil — was pioneered at SACROC and subsequently adapted to the OXY EOR portfolio across the Northern Shelf, the Yates Unit, and other Permian giants.

Today, SACROC is operated by Kinder Morgan CO₂ Company — the same Kinder Morgan that operates the Yates Field Unit across the basin in Pecos County. The SACROC CO₂ flood remains one of the largest and longest-running CO₂ injection operations in the world.

Modern Mineral-Owner Implications

For mineral owners on the SACROC Unit or in surrounding Scurry County:

Operator quality is excellent. Kinder Morgan CO₂ Company is a top-tier U.S. EOR operator; the SACROC CO₂ flood has decades of remaining productive life.

Inheritance is typically 3-4 generations deep. Original 1948-1955 lease bonus money is now received by great-grandchildren of the original Scurry County signers.

Royalty checks are typically substantial. SACROC Unit decimals on actively-flooded tracts often generate meaningful monthly cash flow.

Unitization simplifies title. The SACROC Unit consolidates fragmented mineral interests under a single operator umbrella, making decimal interests easier to verify and value.

For modern unit-level details, see our SACROC Unit guide.

Selling Mineral Rights Tied to the 1948 Kelly-Snyder / SACROC discovery

If your mineral interest traces back to the 1948 Kelly-Snyder / SACROC discovery or its associated boom-era leases, Buckhead Energy can value the future cash flow stream and provide a free written offer with no obligation. Out-of-state owners are common; we handle the entire process remotely.

Texas Oilfield History Hub