Dommo Energia
Corporate brand
UnclaimedBrazilian oil and gas exploration and production company formerly known as OGX.
Last updated August 26, 2026
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Overview
Dommo Energia was a Brazilian oil and gas exploration and production company whose corporate history was closely associated with OGX Petróleo e Gás Participações S.A., commonly known as OGX. Founded in 2007, OGX pursued an ambitious exploration program in Brazil and later held interests in onshore and offshore assets in Brazil and Colombia. The company became publicly listed in 2008 and attracted substantial attention after reporting offshore oil discoveries, including the Waimea discovery in Brazil’s Campos Basin. It began oil production at Waimea in January 2012. The company’s expansion was severely disrupted in 2013, when it defaulted on a US$45 million bond payment and sought bankruptcy protection in the Court of Justice of Rio de Janeiro. The filing marked a major reversal from the company’s earlier prominence: before the restructuring, OGX had been regarded as Brazil’s second-largest oil company by market value after Petrobras. Its difficulties reflected the gap between exploration expectations and the company’s ability to develop commercially viable production and meet financial obligations. OGX was renamed Dommo Energia in 2017. Under the Dommo name, the business remained associated with oil and gas exploration and production, including the Tubarão Martelo field. PetroRio announced an agreement to acquire Dommo Energia on September 1, 2022, and approved the incorporation of the company on October 24, 2022. The transaction transferred full ownership of the Tubarão Martelo field to PetroRio. Following the acquisition, Dommo Energia closed its share capital on the stock exchange in 2023, ending its existence as an independently listed company. Its historical operating portfolio included exploratory blocks and producing or planned production assets in Brazil’s Campos, Santos, Espírito Santo, Pará-Maranhão and Parnaíba basins, as well as interests in Colombia’s Cesar-Ranchería, Lower Magdalena Valley and Middle Magdalena Valley basins. The brand is therefore best understood as the successor to OGX’s restructured corporate vehicle rather than as an independent consumer-facing energy brand. Its principal outputs were crude oil and natural gas, while its business model centered on exploration rights, field development, production and the monetization or transfer of upstream assets.
History
Dommo Energia originated in 2007 as OGX Petróleo e Gás Participações S.A., an upstream oil and gas company established to pursue exploration and production opportunities in Brazil. The company entered the public markets in June 2008 through an initial public offering on BM&F Bovespa, giving it access to capital for a large exploration program. Exploration activity began in September 2009. During that year, OGX reported its first oil discovery at the Waimea offshore field in the Campos Basin. The company subsequently announced additional discoveries, including oil at the Pero and Inga fields in Block BM-C-40 in 2010. These discoveries helped establish OGX as one of Brazil’s most closely watched independent exploration companies and supported expectations of rapid production growth. Waimea began producing oil on January 31, 2012. Contemporary production plans anticipated significant increases from the field, while the company also expected the Gavião Real field to begin production in 2012 and the Waikiki field in 2013. OGX’s broader exploration position included blocks in the Campos, Santos, Espírito Santo, Pará-Maranhão and Parnaíba basins in Brazil. It also held exploration interests in Colombia’s Cesar-Ranchería, Lower Magdalena Valley and Middle Magdalena Valley basins. The company’s expansion and market valuation were undermined in 2013. After defaulting on a US$45 million bond payment, OGX filed for bankruptcy protection in the Court of Justice of Rio de Janeiro. Before that filing, it had been regarded as Brazil’s second-largest oil company by market value after Petrobras. The bankruptcy proceeding represented a decisive corporate and financial turning point, forcing the business to operate through a restructured framework rather than the high-growth model associated with its earlier years. In 2017, OGX adopted the name Dommo Energia. The renamed company continued to be associated with upstream oil and gas assets, including the Tubarão Martelo field. Its later history centered less on broad exploration expansion and more on asset ownership, field operations and corporate consolidation. On September 1, 2022, PetroRio announced the purchase of Dommo Energia. PetroRio approved the incorporation of Dommo on October 24 of the same year; the transaction resulted in PetroRio owning 100% of the Tubarão Martelo field. In 2023, after the acquisition, Dommo Energia closed its capital on the stock exchange. This ended the company’s independent listed status and effectively concluded the Dommo corporate chapter within PetroRio’s asset portfolio.
- 2023
End of independent listing
[1]Dommo Energia closes its capital on the stock exchange following its acquisition and integration into PetroRio.
- 2022
PetroRio acquisition and incorporation
[1]PetroRio announces the acquisition of Dommo Energia and later approves its incorporation, obtaining full ownership of the Tubarão Martelo field through the transaction.
- 2017
Corporate renaming
[1]OGX changes its name to Dommo Energia.
- 2013
Bankruptcy protection filing
[1]OGX seeks bankruptcy protection after defaulting on a US$45 million bond payment.
- 2012
Waimea production begins
[1]Oil production starts at the Waimea field on January 31.
- 2010
Additional discoveries in Block BM-C-40
[1]OGX discovers oil at the Pero and Inga fields in Brazil’s Block BM-C-40.
- 2009
Exploration begins
[1]The company starts exploration activity and reports its first oil discovery at the Waimea offshore field.
- 2008
Initial public offering
[1]OGX completes an initial public offering and becomes listed on BM&F Bovespa.
- 2007
OGX is founded
[1]The company that later became Dommo Energia is established as OGX Petróleo e Gás Participações S.A.
Products and positioning
Upstream oil and gas exploration and production, with historical emphasis on Brazilian offshore assets and later corporate restructuring and asset consolidation.
Upstream production
Crude oil
Crude oil was Dommo Energia’s principal historical output. The company’s upstream activities included offshore exploration and production in Brazilian basins, with Waimea among the fields associated with its production history. Its oil business was based on exploration rights, field development and production rather than refined fuels or consumer retail products.
Upstream production
Natural gas
Natural gas formed part of the company’s oil and gas exploration and production scope. Dommo’s historical portfolio included Brazilian onshore and offshore exploration positions, although the available reference material does not provide a separate current gas product line or detailed production figures.
Oil field asset
Tubarão Martelo field
Tubarão Martelo was a key upstream asset associated with Dommo Energia in its later corporate period. PetroRio’s acquisition and incorporation of Dommo resulted in PetroRio owning 100% of the field, making it the principal asset specifically identified in the transaction history.
Brand decisions
2023
Close the company’s stock-exchange capitalStrategyBackground
Dommo Energia’s acquisition and incorporation into PetroRio made its continued independent listing unnecessary.
Action taken
The company closed its capital on the stock exchange.
Aftermath
Dommo Energia ceased to operate as an independently listed company.
2022
Sell and integrate Dommo Energia into PetroRioM&ABackground
PetroRio announced the purchase of Dommo Energia as part of an upstream asset and corporate consolidation transaction.
Action taken
PetroRio announced the acquisition on September 1 and approved Dommo’s incorporation on October 24.
Aftermath
The transaction gave PetroRio 100% ownership of the Tubarão Martelo field and led to the end of Dommo’s independent corporate existence.
2017
Adopt the Dommo Energia nameStrategyBackground
Following the company’s restructuring after the OGX bankruptcy proceeding, the business moved forward under a new corporate identity.
Action taken
OGX Petróleo e Gás Participações S.A. was renamed Dommo Energia.
Aftermath
The new name became the company’s public identity until its acquisition and incorporation into PetroRio.
2013
Seek bankruptcy protection after bond defaultOtherBackground
OGX faced financial pressure after its exploration-led expansion and defaulted on a US$45 million bond payment.
Action taken
The company filed for bankruptcy protection in the Court of Justice of Rio de Janeiro.
Aftermath
The filing marked the collapse of OGX’s earlier high-growth model and led to a restructured corporate trajectory that later continued under the Dommo Energia name.
Bond payment default. Due payment → Default (2013)
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