An owner’s guide to mineral rights in the Marble Falls Limestone — the leading producing formation in Eastland County, Texas, and a major Pennsylvanian carbonate of the Bend Arch.
Quick answer
The Marble Falls Limestone is a Pennsylvanian-age carbonate formation that’s the leading productive reservoir in Eastland County, Texas. It produces from 7 of the top 20 individual wells in the county. The formation is named after Marble Falls, TX (Burnet County, central Texas) where it was first described.
In the Bend Arch / Eastland County area, the Marble Falls sits within the broader Pennsylvanian sequence below the Caddo Limestone and above (or interfingering with) the Strawn Group sandstones.
Age: Pennsylvanian (Carboniferous, ~315 million years old)
Lithology: Limestone (carbonate) with localized chert and dolomite
Typical depth: 2,800-4,000 ft TVD in Eastland / Stephens / Palo Pinto counties
Porosity: 6-12% (moderate; lower than the overlying Caddo)
Permeability: low matrix; fracture-enhanced effective permeability
The Marble Falls is the leading formation in Eastland County’s top 20 individual wells:
Sneed, Ernest 1 — #4, 176 bbl/mo (Ronning Gas & Oil)
Hanvey-Fee "E" 12 — #7, 141 bbl/mo (Hanvey Don H Oil Interests)
Miller, Conrad & Cecil 4 — #13, 97 bbl/mo (Ronning)
Miller, Conrad & Cecil 6 — #15, 97 bbl/mo (Ronning)
Conrad & Cecil Miller 5 — #16, 94 bbl/mo (Ronning)
Walker, Monroe 3 — #19, 84 bbl/mo (Lowrance, Top Marble Falls completion)
Note the operator concentration: Ronning Gas & Oil holds 4 of the top Marble Falls producers, all on Miller / Conrad / Cecil family-name leases in the southern part of the county.
Marble Falls Limestone wells produce primarily oil with limited associated gas. Modern production is dominated by long-life waterflood operations:
Per-well rate: 1-5 BOPD typical (stripper economics)
Decline rate: 4-8% annual on mature waterflood
Reserve life: 10-25 years on actively-maintained units
Variability: Marble Falls reservoir character is heterogeneous; localized fracture networks create production sweet spots, while adjacent wells in the same lease may be near-zero producers
If your mineral interest produces from the Marble Falls Limestone, Buckhead Energy can provide a free written offer. Most Marble Falls interests in Eastland County are inherited multiple generations deep from the 1917-1925 Ranger boom era.
Buckhead provides a free written offer. Our offer comes at no cost and no obligation.
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