Apache begins Keskesi exploration offshore Suriname
Apache Corp. commenced operations at the Keskesi East-1 exploration well 14 km southeast of Sapakara West-1 in Block 58 offshore Suriname utilizing the Noble Sam Croft drillship. It will test oil-prone upper Cretaceous targets in the Campanian and Santonian.
The operator also provided an update to the technical evaluation of the offshore Suriname Kwaskwasi-1 discovery well (OGJ Online, July 29, 2020).
As previously noted, Kwaskwasi-1 discovered hydrocarbons in multiple stacked targets in the upper Cretaceous Campanian and Santonian intervals. The well encountered 278 m (912 ft) of net oil and volatile oil-gas condensate pay. The shallower Campanian interval contains 63 m (207 ft) of net oil pay and 86 m (282 ft) of net volatile oil-gas condensate pay. The Santonian interval contains 129 m (423 ft) of net pay. Fluid samples from the Campanian validated the presence of oil with API gravities of 34-43 degrees.
Since July 29, the Noble Sam Croft has gathered reservoir and other technical data in the Santonian. Apache retrieved rotary sidewall cores but was unable to collect representative fluid samples from the reservoir due to conditions caused by cementing operations, which were required to mitigate increased pressure below the base of the Santonian formation. Hydrocarbon shows were observed in the Santonian reservoirs, and the results of the formation evaluation indicate the presence of oil.
Apache holds a 50% working interest in Block 58 and will continue as operator through completion Keskesi. Total SA holds the remaining 50% working interest.
