Ecuador
Amazon Heavy Oil Under a Referendum, Two Pipelines and a Shrinking Base
Key Takeaways
- •Crude output averaged about 474,000 barrels per day in 2024 and was expected to fall about 7% in 2025 as the Block 43 (ITT) shutdown and pipeline outages bite (Central Bank of Ecuador estimate, reported by Argus).
- •Proved reserves were estimated at about 8.27 billion barrels in 2022, almost all in the Oriente Basin of the Amazon (EIA, citing Oil & Gas Journal).
- •Post-OPEC strategy: Ecuador withdrew from OPEC effective January 1, 2020, freeing itself from production quotas (OPEC; EIA).
- •The Yasuní-ITT dilemma: voters chose in the August 2023 referendum to halt drilling in Block 43, and Petroecuador began a phased shutdown in August 2024.
- •Two trans-Andean pipelines, the 360,000 b/d SOTE and the 450,000 b/d OCP, carry Amazon crude to Pacific export terminals (EIA).
Ecuador at a glance
Ecuador is a nation whose economic survival is deeply linked to the geology of the Amazon. Ecuador withdrew from OPEC effective January 1, 2020, and has since set production policy nationally rather than by quota. The Central Bank of Ecuador estimated crude production at about 474,000 barrels per day (b/d) in 2024, and projected an average of about 439,100 b/d in 2025, a decline of roughly 7%, as the progressive closure of Block 43 and pipeline outages related to erosion along the Coca River and its tributaries reduced output (Argus, reporting Central Bank and Petroecuador figures, September 2025). The U.S. Energy Information Administration (EIA) put Ecuador's production of petroleum and other liquids at about 482,000 b/d in 2022 and its historical peak at about 562,000 b/d in 2014.
The Ecuadorian oil story is a contest between a large resource base and the limits on producing it. With proved reserves estimated at about 8.27 billion barrels in 2022 (EIA, citing the Oil & Gas Journal worldwide reserves survey), Ecuador holds one of South America's larger reserve bases, almost entirely in the ecologically sensitive Oriente Basin. The state company Petroecuador accounts for an estimated 80% of national output (EIA), so the country's production path is largely the path of one operator's mature Amazon fields, its two trans-Andean pipelines, and the court-ordered shutdown of the ITT block inside Yasuní National Park. Readers can place Ecuador in the wider market on our global oil dashboard and compare its export grades against WTI and Brent benchmarks.
Discovery History: From Jungle Trails to Pipelines
Ecuador's oil age was launched by international majors but defined by its national company.
1. The Lago Agrio Discovery (1967)
Early exploration in the Amazonian jungle was extremely difficult, with limited success. In 1967 the Texaco-Gulf consortium discovered the Lago Agrio field, which proved the Oriente Basin's potential and led to construction of the SOTE pipeline, the first major Andean crossing for Ecuadorian oil.
2. The Petroecuador Era (1980s to Present)
Following the state's takeover of the Texaco consortium's position, Petroecuador became the primary operator. Fields such as Sacha, Auca, and Shushufindi were developed and became the base of national production. In the 2010s the frontier shifted to Block 43, the Ishpingo-Tambococha-Tiputini (ITT) fields at the eastern edge of the developed Amazon acreage, which began producing in 2016 and is now being shut down under the 2023 referendum (see below).
Geological Diversity: The Oriente Basin
Ecuador's hydrocarbon wealth is almost entirely concentrated in the Oriente Basin, an east-Andean foreland basin.
- The heavy-oil signature: Export blends reflect the basin's range. The Oriente export grade carried on the SOTE averaged about 24 degrees API with 1.59% sulfur in 2022, while the Napo export grade carried on the OCP is heavier, at about 19 degrees API with 1.96% sulfur (EIA).
- Water-cut challenges: Mature fields such as Sacha and Auca produce large volumes of water alongside oil, so output depends on water separation, handling, and reinjection capacity as much as on the reservoir itself.
- The ITT block: Block 43 holds the heaviest crude in the developed portfolio and sits inside Yasuní National Park, which is why its future was decided by a national vote rather than by geology.
Key Producing Assets: The Petroecuador Portfolio
| Field / Block | Basin | Operator | Primary Resource | Significance |
|---|---|---|---|---|
| Sacha (Block 60) | Oriente | Petroecuador | Medium oil | One of the country's largest and oldest producing fields. |
| Auca (Block 61) | Oriente | Petroecuador | Medium oil | A mature-field recovery and workover focus. |
| ITT (Block 43) | Oriente | Petroecuador | Heavy oil | In phased shutdown after the 2023 Yasuní referendum. |
| Shushufindi | Oriente | Petroecuador | Medium oil | One of the oldest producing areas, with an associated 20,000 b/d refinery (EIA). |
Technical Spotlight: Holding a Mature Base
Ecuador's central upstream problem is decline management. The EIA notes that the industry has struggled to maintain production because of aging fields, pipeline disruptions, and environmental concerns. Petroecuador's response has centred on infill drilling and workovers in the mature Sacha, Auca, and Shushufindi areas: the EIA recorded Petroecuador completing 117 wells in 2022, up from 64 in 2021, as part of a US $1.9 billion investment year. Those programmes can slow decline, but the 2024 to 2025 production path shows they have not fully offset the loss of Block 43 barrels and repeated pipeline outages.
Infrastructure: The Trans-Andean Arteries
Ecuador's oil must cross the Andes to reach the world. Two pipelines do that work, and both are exposed to the same erosion and landslide corridor in the foothills.
- The SOTE (Sistema de Oleoducto Trans-Ecuatoriano): The state pipeline operated by Petroecuador, with capacity of 360,000 b/d. In 2022 it carried an average of about 320,000 b/d of the medium Oriente grade to the Balao Maritime Oil Terminal and the Esmeraldas refinery (EIA).
- The OCP (Oleoducto de Crudos Pesados): A private-consortium pipeline of more than 300 miles with capacity of 450,000 b/d, built for heavier crude. It carried an average of about 150,000 b/d of the Napo grade in 2022, well below nameplate capacity (EIA).
- Refining: Ecuador's three refineries, Esmeraldas (110,000 b/d), La Libertad (45,000 b/d), and Shushufindi (20,000 b/d), give the country 175,000 b/d of crude distillation capacity (EIA, citing Oil & Gas Journal). That is far below national consumption of refined products, so Ecuador exports crude and imports fuels. Weakness at the largest plant hits the whole system: crude processing across Petroecuador's refineries fell about 32% in January to July 2025, averaging roughly 91,000 b/d, mainly because Esmeraldas was halted for more than 30 days between April and June (Argus, reporting Petroecuador data).
- Outage record: Landslides ruptured both the SOTE and the OCP in April 2020 in one of Ecuador's worst oil spills; falling rocks ruptured the OCP again in January 2022; and both lines were shut as a precaution in February 2023 after a bridge collapse, cutting national production sharply that month (EIA). In 2025 the two lines were shut for about 23 days in total amid Coca River erosion risk (Argus).
Geopolitical Strategy: The Post-OPEC Identity
Ecuador's withdrawal from OPEC, effective January 1, 2020, was announced by the energy ministry as part of a plan to reduce public spending and generate new income, and OPEC formally took note of the withdrawal in March 2020. Ecuador had first joined OPEC in 1973, suspended its membership in 1992, and rejoined in 2007, so the 2020 exit was its second departure.
- Production liberty, limited headroom: Leaving removed the quota ceiling, but not the real constraints: mature fields, pipeline fragility, and the Block 43 shutdown. Official ambitions have repeatedly run ahead of delivery. In March 2024 the energy minister said output could reach 550,000 b/d by the end of 2025 (Reuters); the Central Bank's later estimate for 2025 was an average of about 439,100 b/d.
- A dollarized oil economy: Because Ecuador uses the U.S. dollar, crude exports are a direct source of hard-currency income and fiscal revenue, which is why production outages show up quickly in the national accounts. The Central Bank expected crude and fuel export revenues to fall to about US $7.7 billion in 2025, from about US $10 billion in 2024 (Argus).
Energy Transition: The Yasuní Referendum (2023)
Ecuador is the first producing country where voters ordered a producing field to close, which makes Block 43 a reference case for how a decision to leave oil in the ground works in practice.
- The vote: In a referendum held on August 20, 2023, Ecuadorians voted to halt oil extraction in Block 43 (ITT) inside Yasuní National Park, a UNESCO Biosphere Reserve and home to the Tagaeri and Taromenane peoples in voluntary isolation. The Constitutional Court required a progressive and orderly withdrawal and barred new contracts for the block.
- The shutdown in practice: Petroecuador began the phased shutdown in August 2024. Block 43 averaged about 46,500 b/d in January to July 2025, down about 20% from the same period of 2024, and Petroecuador planned to shut 48 of the block's 188 active wells during 2025 (Argus, reporting Petroecuador data). The government has said all wells should be out of production by 2029, and it has put the cost of ending production in the block at more than US $1.3 billion.
- The scale left behind: Yasuní has been estimated to hold about 1.7 billion barrels of crude, a large share of the national reserve base. That is why the closure matters beyond one block: replacing those barrels requires the mature Sacha and Auca areas to hold their base for longer.
Trade: crude out, fuels in
Ecuador exports most of its crude and imports most of its gasoline and diesel, because its refineries are small and often down. The EIA's country analysis (last updated July 20, 2023, using 2022 trade data) gives the shape of both flows (EIA, Country Analysis: Ecuador, checked October 2026):
| Crude exports by destination, 2022 | Share |
|---|---|
| United States | 40% |
| Panama | 38% |
| Chile | 9% |
| By region: Latin America and Caribbean / North America / Asia Pacific / Europe | 52% / 40% / 7% / 1% |
| Oil and gas imports by product, 2022 | Share |
|---|---|
| Ultra-low sulfur diesel | 25% |
| Finished gasoline | 23% |
| Propane | 19% |
| Import origins: United States / Panama / South Korea | 68% / 7% / 6% |
Panama's large share deserves caution. A country recorded as a destination in trade data is not always where the oil is refined; cargoes recorded against a transit or trading hub can move on to other buyers. The import side is less ambiguous: the United States supplied about two thirds of Ecuador's imported fuels. Ecuador sells crude to foreign refiners and buys back diesel and gasoline, the same two-way pattern for a producer that appears in our US oil imports by country explainer.
Crude was Ecuador's single largest export, at 27 percent of total exports by value in the EIA's data. For 2025 the Central Bank expected crude and fuel export revenue of about US $7.7 billion, down 20 percent from about US $10 billion in 2024, with crude typically about 90 percent of that total (Argus, September 2025, checked October 2026).
Worked example: pipeline capacity is not the constraint
The two trans-Andean lines have a combined nameplate capacity of 810,000 b/d. Using the EIA's 2022 flow figures:
| Pipeline | Capacity (b/d) | 2022 average flow (b/d) | Utilisation |
|---|---|---|---|
| SOTE | 360,000 | about 320,000 | about 89% |
| OCP | 450,000 | about 150,000 | about 33% |
| Both | 810,000 | about 470,000 | about 58% |
Utilisation computed by PetroEyes from EIA capacity and flow figures.
On paper Ecuador has about 340,000 b/d of spare pipeline capacity, more than two thirds of its entire output. Yet the country loses production every time the lines shut, as in the roughly 23 days of combined outages in 2025. Both pipelines run through the same erosion-prone corridor near the Coca River, so a single landslide or riverbank collapse can stop both. Spare capacity in a second line only protects output if it can fail independently of the first. The constraint in Ecuador's data is route diversity, not pipe size.
Worked example: how much does Block 43 matter?
Taking the figures reported for 2025 (Argus, citing Petroecuador and the Central Bank):
- Block 43 produced about 46,500 b/d in January to July 2025.
- National output was estimated at about 439,100 b/d for the year.
- So Block 43 was roughly 10.6 percent of national production while the shutdown was under way.
- Petroecuador planned to close 48 of 188 active wells in 2025, about 26 percent of the block's wells in one year.
Two things follow. First, the full closure, which the government has said should be complete by 2029, removes roughly a tenth of national output at 2025 rates unless mature fields elsewhere are pushed harder. Second, the gap between official plans and outcomes is wide: the finance ministry's budget draft assumed 465,400 b/d for 2025 and the energy minister had spoken of 550,000 b/d by the end of 2025, while the Central Bank's estimate was 439,100 b/d. When forecasts and results disagree, Central Bank and Petroecuador data are the better guide than ministerial targets.
Oil at home: a small role in power, a large one in transport
Ecuador's electricity is mostly hydroelectric: hydropower supplied 79.1 percent of generation in 2021, up from 55.4 percent in 2011, according to the EIA. Oil still dominates the overall energy balance, at 63.4 percent of total energy consumption in 2021, because transport and industry run on liquid fuels. That combination is why fuel imports, not power generation, are the main domestic exposure to oil prices, and why the refinery outages described above show up in the import bill rather than on the electricity grid.
Natural Gas: The Small Amistad System
Gas is a minor part of Ecuador's energy mix. The EIA put proved natural gas reserves at about 385 billion cubic feet in 2022, with nearly all marketed production coming from the offshore Amistad field in the Gulf of Guayaquil, whose output peaked at 20.4 billion cubic feet in 2014. Estimated production was about 18 billion cubic feet in 2022, up from 11 billion cubic feet in 2021. Ecuador does not export natural gas, and all production is consumed domestically, mainly by industry and power generation.
2026 to 2030 Strategic Outlook
- Completing the Block 43 withdrawal on schedule: The referendum mandate runs to a full shutdown by 2029 on the government's stated plan. Slippage is already the subject of legal challenges, so execution, not intent, is the variable to watch.
- Pipeline resilience: Every recent production shock in Ecuador runs through the Coca River erosion corridor. Rerouting and protecting the SOTE and OCP is the single highest-value infrastructure task in the sector.
- Mature-field decline management: Sacha, Auca, and Shushufindi must carry a larger share of a smaller national total. Infill drilling and workover pace, not new discoveries, will set the production floor.
- Refinery reliability: Restoring Esmeraldas to sustained operation matters as much for the fuel import bill as any upstream project.
- Regional comparison: Ecuador's heavy Amazon crude contrasts with offshore growth elsewhere in South America. See our profile of Guyana, where a single offshore block has passed Ecuador's entire national output, and its producing neighbours Colombia and Venezuela. For how the quota system works for the members Ecuador left behind, see our OPEC+ explainer.
Reading Ecuador's statistics with care
- Different bodies, different numbers. The Central Bank, Petroecuador, the hydrocarbons regulator and ministers all publish production figures, on different dates and sometimes for different scopes. The EIA's 482,000 b/d for 2022 covers petroleum and other liquids; the Central Bank's 474,000 b/d for 2024 is crude.
- Daily snapshots are not averages. Single-day production reports swing with pipeline status and should not be annualised.
- Trade shares are dated. The destination and import tables use 2022 data, the latest in the EIA analysis; flows shift with prices and freight.
- Reserve estimates are third-party. The 8.27 billion barrel figure is the Oil & Gas Journal survey as cited by the EIA, not an audited national reserve statement.
- Average utilisation includes outage days. The 58 percent combined figure is an annual average; on normal days the SOTE runs close to capacity.
Frequently Asked Questions
How much oil does Ecuador produce?
Crude production averaged about 474,000 barrels per day in 2024, and the Central Bank of Ecuador estimated an average of about 439,100 barrels per day for 2025, down roughly 7%, as the Block 43 shutdown and pipeline outages reduced output.
Why did Ecuador leave OPEC?
Ecuador withdrew effective January 1, 2020. The energy ministry said the decision was based on fiscal sustainability: reducing public spending and generating new income, which included freedom from OPEC production quotas.
What did the 2023 Yasuní referendum decide?
Voters chose to halt oil extraction in Block 43 (the Ishpingo, Tambococha, and Tiputini fields) inside Yasuní National Park. Petroecuador began a phased shutdown in August 2024, and the government has said all wells in the block should be out of production by 2029.
How does Ecuadorian crude reach export markets?
Two pipelines cross the Andes from the Amazon: the state-owned SOTE (360,000 barrels per day of capacity) to the Balao terminal and Esmeraldas refinery, and the private OCP (450,000 barrels per day) built for heavier Napo-grade crude.
Where does Ecuador's crude go?
In 2022, the latest year in the EIA's analysis, 40 percent of Ecuador's crude exports went to the United States, 38 percent to Panama and 9 percent to Chile. The United States also supplied 68 percent of Ecuador's fuel imports.
Why are Ecuador's pipelines shut so often?
Both trans-Andean lines, the SOTE and the OCP, cross the same erosion-prone corridor near the Coca River. Landslides and riverbank erosion have forced shutdowns repeatedly since 2020, including about 23 days of combined outages in 2025, even though the two lines together have far more capacity than Ecuador produces.
References
- U.S. Energy Information Administration (EIA). "Country Analysis: Ecuador." Reserves of about 8.27 billion barrels (2022, Oil & Gas Journal), production of about 482,000 b/d of petroleum and other liquids (2022), pipeline capacities and 2022 flows, refinery capacities, natural gas data, and the 2020 to 2023 pipeline disruption record. https://www.eia.gov/international/content/analysis/countries_long/Ecuador/
- Argus Media. "Ecuador's crude output to fall by 7pc in 2025." September 2025. Central Bank of Ecuador estimate of about 439,100 b/d for 2025 against about 474,000 b/d in 2024; finance ministry budget assumption of 465,400 b/d; Petroecuador Block 43 well-shutdown plans; January to July 2025 refinery runs; export revenue estimates (rechecked October 2026). https://www.argusmedia.com/en/news-and-insights/latest-market-news/2734764-ecuador-s-crude-output-to-fall-by-7pc-in-2025
- OPEC. Press release on the 178th (Extraordinary) Meeting of the OPEC Conference, March 5, 2020, noting Ecuador's withdrawal from membership effective January 1, 2020. https://www.opec.org/pr-detail/316-05-mar-2020.html
- U.S. Energy Information Administration (EIA). "Country Analysis Executive Summary: Ecuador" (2021 edition), on the January 1, 2020 OPEC withdrawal and its stated fiscal rationale. https://www.eia.gov/international/content/analysis/countries_long/Ecuador/archive/pdf/ecuador_2021.pdf
- Reuters, reported by OE Digital. "Ecuador expects oil output to reach 550,000 bpd by end of 2025, minister." March 2024. https://energynews.oedigital.com/refined-products/2024/05/25/ecuador-expects-oil-output-to-reach-550000-bpd-by-end-of-2025-minister
- Amazon Watch. "Three Years After Ecuador's Historic Yasuní Vote, the Oil Still Flows." September 2026. Referendum mechanics, the Constitutional Court withdrawal requirement, and Block 43 well and production status at the time of the vote. https://amazonwatch.org/news/2026/0922-three-years-after-ecuadors-historic-yasuni-vote-the-oil-still-flows