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Exploration & Production

Exploration & Production


Repsol holds an interest in approximately 195,256 net acres on the North Slope in Alaska, where we have announced several significant discoveries in the Nanushuk formation.
In 2017, Repsol announced the Horseshoe discovery, which is the largest conventional onshore oil discovery in the United States in 30 years. Horseshoe extends the Nanushuk more than 20 miles south of the Pikka Unit, where Repsol previously achieved discoveries in the same interval.
Repsol holds a 49% working interest in the Horseshoe discovery and in the Pikka Unit (38,095 net acres), where development permitting is currently underway.

Eagle Ford Shale

Repsol holds an interest in 100,331 net acres in the Eagle Ford Shale in South Texas and associated midstream assets, primarily located in Karnes, DeWitt, Bee, Live Oak, McMullen and La Salle counties.

US Gulf of Mexico

Repsol holds a working interest in 50 blocks on approximately 80,000 net acres in the deepwater US Gulf of Mexico, which is a core region in the company’s 2021-2025 Strategic Plan.
Repsol holds a 28% working interest in Shenzi, which has produced more than 350 million barrels of oil equivalent gross since 2009. The company holds a 22.5% working interest in Buckskin, where first oil was achieved in 2019.

Marcellus Shale

The Marcellus Shale is one of the largest natural gas fields in the world, extending throughout the Appalachian Basin and stretching across Pennsylvania.

Repsol holds 214,000 net acres in the Marcellus Shale primarily located in northeastern Pennsylvania in Bradford, Susquehanna and Tioga counties. 

The company owns and operates midstream assets in Pennsylvania comprising approximately 350 miles of production and gathering pipelines, which are serviced by eight compression and gas dehydration facilities. The midstream assets, having a meter sales capacity of 1.5 billion cubic feet per day, currently deliver gas into multiple interstate pipeline systems.

Click here to watch our video "Repsol in the Marcellus Shale."

Trenton-Black River

Repsol acquired assets in the Trenton-Black River Formation in New York through the acquisition of Talisman Energy in 2015. The gas-rich acreage contains 80 producing wells in Chemung, Steuben, Tioga and Schuyler counties.
The Bucksin development

Repsol reflects on the successful revitalization of its Buckskin project

After drilling the discovery well in 2009, Repsol is proud to have been a driving force behind Buckskin from the project’s very beginning. Learn more about how Repsol optimized Buckskin for development and continues to support the project as a non-operating interest owner today.
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