GLIAG · BASIN INTELLIGENCE · PROGRESS PAPER No. 2 · 10 OCTOBER 2026
TTUD-1: An Option on a Kitchen
Oil or gas beneath the distal Orinoco fan, and why the answer reshapes the Caribbean Gas Arc™. A continuation of Understanding ExxonMobil’s Pivot to NE Trinidad.
Drs. M.P.T. Chin-A-Lien, MBA, M.Sc., Ing. Geologist
Principal Founding Partner, Managing Partner & Chief Architect, GLIAG
Certified Professional Geologist Nr. 5201-1996 (AAPG) · Chartered European Geologist Nr. 92-1996 (EFG) · Energy Negotiator June 2021 (AIEN)
Golden Lane Investments Advisory Group B.V. · Zoetermeer/Delft, The Netherlands & Paramaribo, Suriname · petroleumenergyinsights.com · info@gliag.com
Document Ref. GLIAG_ESSAY_2026_TTUD1_ProgressPaper02_Rev01
Abstract
ExxonMobil’s TTUD-1 position offshore Trinidad and Tobago is a US$42.5 million option on a frontier kitchen whose phase is unknown.
That first-phase commitment equals 0.26% of the government’s US$16.4–21.7 billion development case.
The decision that would turn the option into a capital pivot, a drilling commitment, now falls in 2027, with spud guided for late 2027 or early 2028.
The deciding variable is not pace but phase.
Stabroek works because Cenomanian–Turonian source rock sits in the oil window beneath Upper Cretaceous turbidite fans.
In the same deepwater province east of Trinidad, the only commercial-scale result to date is gas: the Calypso discoveries, about 3.5 Tcf, still without FID nearly five years after appraisal ended.
GLIAG’s pre-3D judgement puts the odds of a gas-dominant outcome, given any discovery, at roughly 60–65%.
This Progress Paper updates the first GLIAG analysis, sets out a probabilistic decision tree to 2033, and places TTUD-1 inside the Caribbean Gas Arc™, where Venezuelan cross-border gas will arrive first and set the price TTUD-1 gas must beat.
1. Key facts, as of 10 October 2026
| Item | Position | Source |
| Block | TTUD-1, consolidating former TTDA 17–23; 7,165 km² (some trade press report 7,765 km²); water depth >2,000 m | World Oil / Bloomberg, Trinidad Express |
| Contract | PSC signed 12 Aug 2025 after ~7 months of negotiation; Exxon’s first approach Nov 2024 | Trinidad Express |
| Phase 1 commitment | US$42.5 m; 3D seismic ~5,500–6,000 km² (Shearwater); up to two exploration wells across phases | Oil & Gas Journal, Energy Chamber T&T |
| Development case | US$16.4–21.7 bn, if successful (government estimate) | Jamaica Gleaner |
| Equity | ExxonMobil 90% (operator); Occidental (Anadarko Caribbean) 10%, farm-in June 2026 | Trinidad Express |
| Seismic | Acquisition near completion July 2026; results guided end-Aug 2026, now end-2026 | OilNOW, Trinidad Express |
| First well | Late 2027 or early 2028 (ExxonMobil guidance) | Trinidad Express |
2. What has changed since the first paper
The first GLIAG paper, Understanding ExxonMobil’s Pivot to NE Trinidad, argued that the move from the Canje Block to TTUD-1 reflected capital allocation, not geology:
Canje showed hydrocarbons without commercial viability, so Exxon redirected frontier effort to new acreage.
Three developments since then refine that thesis.
1. The capital is still small. US$42.5 million is option premium. A pivot in the balance-sheet sense arrives only with a well commitment, guided for 2027.
2. Risk is now shared. Occidental’s 10% farm-in in June 2026 came after acquisition began but before processed data existed. Carry terms are undisclosed; until they are, the farm-in signals a partner, not a prospect.
3. The schedule has slipped twice. In August 2025 drilling was expected about six months after survey completion; results were later guided for end-August 2026. Today both moved: processed images by end-2026, spud late 2027 or early 2028. ExxonMobil’s own exploration chief has said the company cannot promise the Trinidad system will behave like Guyana.
Amended GLIAG thesis: TTUD-1 is a capital-efficient option written by a company that learned at Canje how quickly frontier conviction decays.
The pivot is conditional, and its trigger is phase.
3. The petroleum-system test: phase, not pace
3.1 Why Stabroek is oil
The Golden Lane fairway works because three elements align: a Cenomanian–Turonian marine source, the Canje Formation, a La Luna-family equivalent; burial into the oil window during the late Cretaceous to Paleogene; and Upper Cretaceous turbidite fans directly above, sealed by Paleogene shale. GLIAG set out that charge geometry in Golden Lane: Kitchen and Receiver of ACT Charge and the source-rock lineage in The Birth of Oil: La Luna’s Role in Petroleum Systems.
3.2 Why TTUD-1 may be gas
TTUD-1 lies roughly 190 miles off Trinidad’s east coast, northwest of Stabroek, beneath the distal reach of the Orinoco delta system.
The Upper Cretaceous source interval that charges Stabroek has a Trinidad equivalent in the Naparima Hill section.
Here it sits below a Neogene clastic wedge whose thickness at TTUD-1 is not constrained in public data.
The processed 3D will constrain it.
Two outcomes follow.
Where the wedge is thin, the Cretaceous kitchen may remain in the oil window and a Stabroek-type play survives.
Where it is thick, the same source is driven into the gas window or beyond, and the province behaves like Calypso.
The evidence to date points to the second: Calypso, about 220 km offshore in ~2,100 m of water, holds about 3.5 Tcf of gas across the Bongos, Bele, Boom, Hi-Hat and Tuk discoveries, with all three appraisal wells completed by December 2021.
3.3 GLIAG probabilistic view (judgement, pre-3D)
| Outcome, first exploration well | Probability | Basis |
| Commercial discovery (any phase) | 15–20% | Frontier deepwater, untested play, one-well test |
| of which gas-dominant | 60–65% | Calypso analogue; burial under Orinoco wedge |
| of which oil-dominant | 15–20% | Stabroek analogue if Cretaceous kitchen is shallow |
| of which mixed / condensate | 20% | Transitional burial |
| No commercial discovery | 80–85% | Charge, reservoir or seal failure |
Read: P(oil-dominant commercial discovery on the first well) ≈ 2–4%. P(gas-dominant) ≈ 9–13%. These figures are GLIAG judgement and will be revised on the processed 3D.
4. Commercial architecture: three cases
| Case | Development route | Binding constraint |
| Oil | Guyana-design FPSO, standard hull and topsides; government case US$16.4–21.7 bn | Discovery size; Liza went from discovery (May 2015) to first oil (Dec 2019) in 4.6 years |
| Gas | Subsea tie-back or host platform, export pipeline of 200+ km to the east-coast system and onward to Atlantic LNG at Point Fortin | Gas price and fiscal terms; Calypso has no FID five years after appraisal |
| Dry / sub-commercial | Relinquishment after phase 2 | Trinidad’s reserve life (<12 Tcf, ~10 years) shortens further |
The gas case carries a precedent that every regional government should study. Woodside sought revised terms from early 2024, arguing that the Calypso PSC had been designed for oil, not gas.
An initial agreement came in February 2025, and in August 2026 bp agreed to buy Woodside’s 70% and take the project to 100%.
Gas found under oil-designed terms waits. That is the lesson GLIAG’s National Pre-FID Gate doctrine addresses: write the gas terms before the drill bit finds gas.
5. Predictive timeline, 2026–2033
| Window | Milestone | GLIAG view |
| Q4 2026 – Q1 2027 | Processed 3D delivered | P50 Q1 2027, given two prior slips |
| H1 2027 | Prospect ranking; well commitment | The real pivot point; watch Exxon’s Q1–Q2 2027 disclosures |
| H2 2027 | Rig contract | Deepwater rig shared with Guyana campaign is the efficient route |
| Q4 2027 – Q2 2028 | Spud, first well | P50 Q1 2028 |
| 2028–2029 | Result; appraisal if positive | Oil: 2 appraisal wells. Gas: commercial terms first |
| 2030–2033 | FID and first production | Oil: first oil ~2032–2033. Gas: after 2033, behind Venezuelan supply |
6. Regional fit: the Caribbean Gas Arc™
Trinidad’s gas problem is being solved from the west first. Venezuela formalised Shell’s role in Loran, about 7 Tcf, in June 2026, alongside the ~4.2 Tcf Dragon field and bp’s interest in Loran and Cocuina–Manakin.
Both feed Trinidad’s liquefaction and petrochemical plants, where Atlantic LNG’s Train 1 has been idled for lack of feed gas.
GLIAG mapped that cross-border system in Loran–Manatee: Geopolitics and Gas Insights.
| Supply source | Gas (Tcf) | Earliest supply | Status |
| Loran (VE) / Manatee (T&T) | ~7 | Late 2020s | Shell agreements June 2026 |
| Dragon (VE) | ~4.2 | Late 2020s | Shell; US licensing |
| Calypso (T&T deepwater) | ~3.5 | Post-2030 | bp to 100%; no FID |
| TTUD-1 (T&T ultra-deep) | Unknown | After 2033 if gas | Pre-drill |
Predictive insight:
Venezuelan cross-border gas arrives first, through shallow-water infrastructure, and sets the marginal price for Trinidad’s plants.
Calypso is second in line.
A TTUD-1 gas discovery would be third, at the highest transport cost.
For TTUD-1, the commercial bar is therefore an oil discovery or a gas resource large enough to justify new export capacity.
Exxon’s 90% position and Oxy’s 10% are priced on that asymmetry.
7. Implications for the Guyana–Suriname Basin
• Capital competition. TTUD-1 competes with GSB acreage for ExxonMobil’s frontier budget. Suriname’s licensing calendar should account for an Exxon well commitment decision in 2027.
• Gas terms before gas. Suriname’s own gas pathway, set out in GLIAG’s Production-Depletion & Fiscal Revenue Outlook, needs fiscal terms designed for gas now, not after a Calypso-type standoff.
• Kitchen depth as screening tool. The burial test applied here also screens Suriname’s outer-margin acreage; GLIAG’s generation and migration evaluation for Suriname provides the framework.
• National value. Whether TTUD-1 succeeds or fails, the regional question remains conversion of molecules into national value, the theme of From Exploration to National Value.
8. What would change the view
4. Processed 3D showing Upper Cretaceous fan geometry with amplitude support at drillable depth: raises oil-dominant probability.
5. A disclosed Occidental carry of phase-2 drilling cost: signals stronger prospect conviction.
6. A deepwater rig contract naming TTUD-1 before end-2027: confirms the pivot.
7. A bp FID on Calypso: proves deepwater gas can clear Trinidad’s price, improving the gas case for TTUD-1.
8. Further slip of processed data beyond Q2 2027: lowers the probability of a 2028 spud below 50%.
9. How GLIAG tracks TTUD-1
This paper was built on the GLIAG Intelligence Platform (GIP) and the daily Basin Watch newsletters.
They are the base of the analysis, not an add-on.
• GIP:
Guyana–Suriname Basin Intelligence Platform™. TTUD-1 is a live record: equity, commitments, a dated slip log, the kitchen-phase test and the probabilistic tree above, refreshed as data arrive. Its assistant, Ask Marcel, answers in GLIAG’s Answer, Basis, Uncertainty, What-would-change-the-view format.
Background: GLIAG Intelligence Platform.
• Basin Watch, GSB and South America editions.
Daily scans of worldwide developments for their impact on Suriname, Guyana and the region, including the TTUD-1 signposts in Section 8.
• Access. Founding-access licences for companies, ministries and state institutions: info@gliag.com.
Free educational access for AdeKUS and NATIN as Local Content.
Companion reading (GLIAG)
• Understanding ExxonMobil’s Pivot to NE Trinidad: A Strategic Analysis (first paper)
• The Basin Was Visible Before the Discovery: Liza and Golden Lane (30 Sept 2026)
• Golden Lane: Kitchen and Receiver of ACT Charge (7 Oct 2026)
• Loran–Manatee: Geopolitics and Gas Insights (14 Aug 2026)
• The Birth of Oil: La Luna’s Role in Petroleum Systems (20 Aug 2026)
• Guyana–Suriname Super Basin: Production-Depletion & Fiscal Revenue Outlook (12 Aug 2026)
• Evaluating Petroleum Generation and Migration in Suriname (6 Oct 2026)
• From Molecules to Markets: The Sovereign Conversion Doctrine (Aug 2026)
Sources
• Trinidad Express, T&T exploration moving faster than Guyana (Sept 2026)
• Trinidad Express, T&T signs deal with ExxonMobil, Occidental (June 2026)
• OilNOW, Exxon can’t promise another Guyana
• OilNOW, ExxonMobil nears completion of TTUD-1 seismic (July 2026)
• World Oil / Bloomberg, ExxonMobil signs exploration deal for offshore Trinidad (13 Aug 2025)
• Oil & Gas Journal, ExxonMobil could invest up to $21.7 billion (Aug 2025)
• Jamaica Gleaner, ExxonMobil re-entering Trinidad (13 Aug 2025)
• Energy Chamber of T&T, Exxon sees T&T deepwater potential (2026)
• Upstream, Shell signs deal with Venezuela for 7 Tcf gas development (16 June 2026)
• OilNOW, bp to acquire Woodside’s stake in Calypso (Aug 2026)
• Offshore Engineer / Reuters, BP to acquire Woodside stake (Aug 2026)
• Woodside Energy, Calypso project page
• The Energy Year, Trinidad and Woodside agree commercial terms for Calypso (Feb 2025)
Disclaimer and legal notice
1. No advice. This publication is for information only and does not constitute investment, legal, tax, financial or technical advice.
2. No offer or solicitation. Nothing herein is an offer, solicitation or recommendation to buy, sell or hold any security, interest or asset.
3. Independence of analysis. GLIAG does not act as sponsor, bidder, equity holder or promoter of any transaction referenced. Views are the author’s own, based on public sources cited.
4. Forward-looking statements. Probabilities, timelines and scenarios are judgements subject to material uncertainty and will change as data emerge.
Copyright and IP. © 2026 Golden Lane Investments Advisory Group B.V. All rights reserved. Golden Lane™, GLIAGOGRAPH™, Sovereign Molecule™, Sovereign Conversion Capacity™ and Caribbean Gas Arc™ are trademarks of GLIAG. Pursuant to Article 4(3) of Directive (EU) 2019/790, the rightsholder expressly reserves this work from text and data mining, including use for training artificial-intelligence or machine-learning systems.
Citation. Chin-A-Lien, M.P.T., TTUD-1: An Option on a Kitchen. GLIAG Progress Paper No. 2, Petroleum & Energy Insights, 10 October 2026.
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