Survival-analytic outputs from the Meginráð UKCS EHA Series. Each figure is grounded in the Hannan-Freeman population ecology framework applied to the NSTA PPRS dataset 1975–2026.
25 confirmed CoP events in 294 active field-years in 2024 - the highest annual cessation rate in the v15 panel history. The 2-year pre-EPL baseline was 2.8%. The dip in 2022 (operators pausing decisions) followed by the 2024 spike is the characteristic signature of a fiscal shock with a two-year transmission lag. Not geological. Not cyclical. Structural.
Probability of at least one throughput-critical cessation event affecting the FPS by 2030 [hub-level aggregation model, V15.6.0, verified against Canonical Outputs Register]. Norpipe: 99.8%. The FPS carries approximately 40% of total UKCS production and is a physical prerequisite for CCS development. Statistically expected consequences of current density, age profile, and fiscal trajectory.
op_ceo_discipline hazard ratio 1.364, not statistically significant (p=0.282). This corrects an earlier finding of complete separation (zero CoP events for the Finance CEO category), which was identified as a build error in the CEO discipline coding present in panel versions V12–V15. CEO discipline is not currently used as an independent predictor in the primary Cox specification.
Field operating within normal parameters.
| Field | System | WC 2030 | Plat Age | P(CoP) to 2030 | Archetype |
|---|---|---|---|---|---|
| Sillimanite | Norpipe | 0.999 | 12yr | 54.1% | Small Independent |
| Cygnus | Norpipe | 0.999 | 16yr | 45.5% | PE-backed |
| Kraken North | FUKA | 0.999 | 15yr | 43.4% | Small Independent |
| Barnacle | FUKA | 0.999 | 13yr | 43.1% | Small Independent |
| Kraken | FUKA | 0.999 | 16yr | 42.5% | Small Independent |
| Crathes | FPS | 0.999 | 16yr | 41.5% | Small Independent |
| Peregrine | FPS | 0.999 | 17yr | 41.2% | Small Independent |
| Kew | Norpipe | 0.999 | 18yr | 40.6% | Small Independent |
| Breagh | Norpipe | 0.999 | 19yr | 39.9% | Small Independent |
| York | Norpipe | 0.999 | 19yr | 39.9% | Small Independent |
| Enochdhu | FPS | 0.964 | 17yr | 39.5% | Small Independent |
| Mariner | FUKA | 0.999 | 13yr | 39.4% | Small Independent |
| Tonto | FPS | 0.997 | 19yr | 39.0% | Small Independent |
| Varadero | CATS | 0.999 | 15yr | 38.9% | Small Independent |
| Golden Eagle | FPS | 0.999 | 18yr | 36.3% | Small Independent |
Probability of at least one throughput-critical cessation event by year. FPS and Flotta Terminal are physical prerequisites for future CCS and hydrogen development.
| Pipeline System | Hub Function | P(CoP) 2027 | P(CoP) 2030 | Risk Status |
|---|---|---|---|---|
| Forties Pipeline System | ~40% UKCS throughput; CCS prerequisite | 82.1% [interim figure, unverified] | 83.0% | Critical |
| Norpipe | Norwegian-UK interconnector; Ekofisk export route | 88.4% | 99.8% | Critical |
| CATS (Central Area) | Central North Sea gas condensate; Teesside terminal | 64.2% | 94.1% | High Risk |
| FLAGS (Far North) | Far North Liquids and Associated Gas System | 58.7% | 91.3% | Elevated |
| SAGE (Scottish Area) | Scottish Area Gas Evacuation; St Fergus | 44.1% | 82.6% | Elevated |
| Sullom Voe Terminal | Northern basin oil terminal; East Shetland cluster | 41.3% | 84.7% | Elevated |
| Flotta Terminal (Orkney) | Northern basin hub; Claymore-Piper-Tartan; H₂ prerequisite | 52.6% | 88.9% | Elevated |
| Britannia System | Central North Sea gas-condensate hub | 31.8% | 71.4% | Monitoring |
The deaths-to-foundings ratio first reaches 1.0 in Era V. More fields are permanently closing than are being created. This occurred in 2009–2015. Thirteen years before the Energy Profits Levy.
The EPL did not initiate the structural decline of the UKCS. It accelerated a population already past its ecological death cross. By 2024 the D/F ratio stood at 3.75×: nearly four fields permanently closing for every one created.
The D/F ratio column is the argument. From 0.00 in Era I to 3.75× in Era VII, it traces a population moving from pure founding through the death cross into density-dependent collapse. Each era is not simply a period label. It is a distinct ecological regime with its own dominant mechanism. The table below maps all nine.
| Era | Period | Name | D/F Ratio | Dominant Mechanism |
|---|---|---|---|---|
| I | 1964–1974 | Founding | 0.00× | Liability of newness. High entry, zero mortality. Continental Shelf Act 1964. |
| II | 1975–1984 | Legitimacy | 0.04× | Institutional imprinting. BNOC. Capital abundant. Population establishes its social contract. |
| III | 1985–2000 | Peak Founding | 0.11× | Founding rate peaks at 13.2 fields/yr. Operator density peaks 1999. Piper Alpha regulatory shock. |
| IV | 2000–2008 | Fragmentation | 0.35× | IOC exit. PE entry. Zero new operators. Fields transfer not retire. Liability of obsolescence emerging. |
| V | 2009–2015 | Crisis & Imprinting | 1.00× | Ecological death cross. Field mortality rate reaches founding rate for the first time. D/F = 1.00. OGA founded 2015. MER UK statutory re-imprinting at $52/bbl trough. |
| VI | 2015–2022 | Dual Mandate Transition | 2.65× | NSTA re-imprinting. Net zero integration. Mortality doubles Era V. Crowding effects visible. |
| VII | 2022–2026 | Late Maturity & Fiscal Shock | 3.75× | EPL destroys investment confidence. SFS = 0.74 breaches self-correction threshold. Cascade signals crossing. Founding rate near zero. Highest annual mortality in panel history. |
| VIII | 2027–2030 | Infrastructure Cascade | — | Fiscal death cross. Trunk pipeline system CoP wave. Density-dependent collapse: the population cannot sustain its own infrastructure. Bacton SNS and FPS corridor failures. |
| IX | 2031+ | Terminal Ecological Succession → | — | Post-pipeline basin. Only electrification-committed fields viable. Net zero trajectory dominant. A fundamentally different organisational form replaces the incumbent population. |
Structural imprinting at acquisition explains why different operator types face different mortality trajectories under identical fiscal conditions. PE-backed operators acquired assets when the effective tax rate was 40%. The business plan, debt structure, and exit timeline were calibrated to that environment. That imprint cannot be retrospectively rewritten when the rate moves to 78%. The mismatch is structural, not managerial.
| Archetype | Median Lifespan | Annual CoP Rate | Mean Water Cut | Interpretation |
|---|---|---|---|---|
| PE-Backed | 5.0 yrs | 8.5%/yr | 0.790 | Shortest lifespan. Acquired at 40% ETR, operating at 78%. Imprinting mismatch. Liability of obsolescence in accelerated form. n=4: interpret with caution. |
| IOC | 14.5 yrs | 1.8%/yr | 0.580 | Reference archetype. Original basin founders. Balance sheet depth absorbs fiscal shocks that terminal PE-backed operators cannot. |
| Small Independent | 15.0 yrs | 2.2%/yr | 0.640 | Largest group by field count. Acquired via IOC divestment cycle 2010–2020. Imprinted at a lower fiscal rate than current. Structurally vulnerable but not acutely so. |
| National Oil Company | 18.0 yrs | 0.8%/yr | 0.450 | Lowest closure rate. Sovereign capital and long investment horizon decouple the mortality decision from short-term fiscal pressure. n=1. |
PE-backed and NOC archetypes rest on small event counts (n=4 and n=1 respectively). Directional findings are analytically significant. Statistical precision requires larger samples. Both are flagged for validation in the V16 panel.