Stabroek_BLOCK_1 — The Stabroek Block is a ~6.6 million acre (26,800 km²) offshore, ultra-deepwater block in Guyana operated by ExxonMobil (45%), with co-venturers Hess (30%) and CNOOC (25%). As of early 2026, it has over 50 discoveries, with recoverable resources exceeding 11 billion barrels of oil equivalent, driving production to over 770,000 barrels per day (bpd) with a target of over 1.3 million bpd by 2028.

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Exxon successfully spuds Ranger-1

November 6, 2017

ExxonMobil began exploratory drilling operations at the Ranger-1 well site in the Stabroek Block, offshore Guyana on Friday.

The Ranger-1 drill site is located approximately 160 nautical miles off the coast of Guyana and covers an area of one square kilometer.

OilNOW understands drilling will continue until the end of December and the company will begin assessing the results early next year.

Ranger-1 follows similar operations at Turbot-1, located 107 nautical miles offshore. ExxonMobil announced on October 5 that a reservoir of 75 feet (23 meters) of high-quality, oil-bearing sandstone was detected at Turbot, making it the company’s 5^th oil discovery in the South American country.

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