Rock Springs Uplift

1 · Compartmentalization

Net-transgressive Almond barrier–lagoon sets create layered shoreface sands separated by bay-fill baffles, with shoreface pinchouts that can die in hundreds of meters — the Wamsutter / Vermillion-style “statistical play” problem.

2 · Wrong channel model

Distributaries and compound incised-valley fills look similar on a single well. Mis-ID drives the wrong continuity, trap, and completion story.

3 · Fluvial style vs A/S

Ericson sheet-like lowstands and multi-storey fills track accommodation / sediment-supply and tectonic unconformity (including Moxa-scale surfaces) — not a single “braided vs meandering” checkbox.

4 · Sparse-well prediction

Strike and dip facies shifts in coastal–shelf systems are hard to extrapolate from wells; outcrop calibrates scale, trajectory, and correlation risk.

5 · Structure is not enough

Tight-gas performance often follows facies, paleostructure, and diagenetic history more than the present-day anticline map.

Who asked for this

Devon’s May 2026 internal cohort came for reservoir presence, architecture scale, nearshore process, and oil-finder sequence stratigraphy — the same problem set public industry teams carry into Mesaverde and analog basins.

Earned on the run-of-show

• Geology (60%) — Week spine is siliciclastic sequence strat on Rock Springs, Ericson, Blair, Dakota–Muddy/Frontier, and Almond architectures (distributary vs IVF, A/S, barrier–lagoon compartmentalization) — the Mesaverde tight-gas prediction core.

Makeable (provisional)

• Engineering (20% provisional) — N451/Lee week is oil-finder sequence strat; landing / drainage / well-placement language is thinner than PRB/Rift unless every architecture stop ends with continuity → well placement / drainage / compartment implications.
• Completions (10% provisional) — Almond barrier–lagoon baffles and pinchouts genuinely control stage / parent–child risk in Mesaverde tight-gas, but completions is not automatic from geology stops — needs a named Almond completion talk, not résumé fluency.
• Geophysics (10% provisional) — Competitor N451 limited-log frameworks + FMI/core are soft GP; shoreface pinchouts and Almond strike/dip transitions create real sparse-data / attribute-trap risk only if framed at seismic vs facies-belt scale.

Omitted (no public fraction)

• Land — Spacing appears only as engineering EUR/drainage language. No acreage / lease / unit decision curriculum on the RSU remodel; do not inflate Land from eng spacing asides.
• Geothermal — No genuine May-2026 / N451 geothermal spine on this Mesaverde oil-finder product.
• carbon capture and storage (CCS) — Rock Springs Uplift has real CarbonSAFE / Madison–Weber–Nugget storage literature, but that is a different product story (deep saline under Jim Bridger). Do not pad the Mesaverde tight-gas field school with off-spine CCS.
• saltwater disposal (SWD) — Lean honesty: tight-gas water / completion-fluid asides fold into Engineering/Completions. Separate SWD geoscience fractions only if Lee adds a dedicated produced-water / injectivity module (then reconsider SWD 5 and rebalance Eng/Completions).

Laboratory

The Rock Springs Uplift exposes Upper Cretaceous Mesaverde through Almond coastal–fluvial systems — plus Blair deltaic–prodeltaic and MTC (mass-transport complex) / event-bed successions — at walkable scale for Greater Green River tight-gas analogs.

Method

Each field day opens with a short conceptual lecture, then six-hour outcrop work aimed at one prediction problem. Exclusive GFS drone models extend the same faces beyond the roadcut.

Sunday · Transit geology

Echo Canyon alluvial fan and point-bar relay; Frontier Chalk Creek / Coalville shorefaces and Dry Hollow regional unconformity en route to Rock Springs.

Monday · Rock Springs Fm

Crooked Canyon — aggradational to highstand shoreface and coastal plain; stacked shorefaces and distributaries; compound IVF vs lowstand shoreline (outcomes 1 & 5).

Tuesday · Ericson + Blair

Moxa Unconformity and Ericson sheet-like fluvial lowstands; Blair river-dominated deltaic to delta-front event beds, MTCs, and slope channels (outcome 3).

Wednesday · Low A/S end-members

Dakota–Muddy amalgamated fluvial systems; Frontier shoreface–floodplain–fluvial traverses and reservoir prediction (outcome 4).

Thursday · Almond Fm

Barrier shorefaces, lagoon, tidal inlet, washover, flood-tidal delta, and multi-story fluvial IVF — net-transgressive compartmentalization on outcrop (outcome 2).

Friday · Wrap

Depart Rock Springs for SLC; optional Green River Fm deltaic / lacustrine / growth-fault overviews if schedule allows.