East Texas Oilfield Waterflood Economics

The East Texas Oilfield as a Waterflood Benchmark

The East Texas Oilfield has been on continuous waterflood since 1965 — among the longest-running secondary recovery operations anywhere in the U.S. The field's combination of shallow Woodbine Sandstone (3,200-3,800 ft TVD), high original porosity and permeability, and ideal stratigraphic trap geometry against the Sabine Uplift makes it the textbook waterflood field. Recovery factors have exceeded 75% of original oil in place.

For mineral owners, the field's waterflood maturity produces the most predictable royalty cash flow profile of any major U.S. oil field — small monthly checks, very low decline rate, and decades of remaining production.

Production Profile

A typical East Texas Oilfield section in 2026 produces:

Per-well rate: typically 1-15 BOPD on most wells (stripper-rate); a small number of higher-rate wells exist on the field's most productive units

Water cut: 90-99% on most wells (the field has produced more than 30 billion barrels of water cumulative)

Decline rate: typically 2-6% per year on long-life waterflood wells

Remaining reserve life: 15-30+ years on actively-maintained units; shorter on units where operator maintenance has lapsed

Mineral Valuation Inputs

Direct buyers value East Texas Oilfield mineral interests using a discounted cash flow approach with these key inputs:

Decline rate — typically 2-6% annual on long-life waterfloods (lower than horizontal plays)

Remaining reserve life — often 15-30+ years

Operating cost trajectory — water cut and lifting costs rise over time, eventually setting the economic limit

Operator quality — well-maintained waterfloods can outperform projections; poorly-maintained ones decline faster than expected

Discount rate — typically 8-12% for stable East Texas waterflood cash flows (lower than the 15-25% used for new horizontal upside)

Eagle Ford optionality — selected sections have horizontal Eagle Ford potential below the Woodbine; can add modest upside to the base waterflood valuation

Hold or Sell? The East Texas Question

For mineral owners deciding whether to hold or sell an East Texas Oilfield interest, the question is the classic waterflood tradeoff: do you want the stable 15-30 year stream of small monthly checks, or do you want the lump sum today?

Holding produces predictable income at modest dollar amounts per month for decades. Selling converts those decades of small future checks into a single payment today. The "right" answer depends on your situation — age, tax position, estate plan, other income sources, and family circumstances.

For a deeper discussion, see our royalties vs lump sum guide.

Get an East Texas Oilfield Waterflood Valuation

DCF-based written valuation that accounts for waterflood maintenance investment + Eagle Ford optionality.