Siccar Point Energy, Aberdeen, has suspended for use in future development the 204/10a-5 appraisal well in Cambo oil field, 125 km northwest of the Shetland Islands, saying logs and cores confirmed a high-quality reservoir with 23° gravity oil and “petrophysical properties better than anticipated.”
Those results came in a vertical pilot hole that confirmed an oil column greater than 100 ft with net pay of 58 ft, which exceeded expectations.
After logging and coring, Siccar Point drilled a 1,612-ft horizontal section for an extended well test.
“Initial results are encouraging, indicating excellent reservoir productivity and sustained flow,” the company said.
Discovered in 2002, Cambo field is on UK Continental Shelf licenses P1028 and P1189, 30 km southwest of Rosebank field and 50 km north of Schiehallion field. Siccar Point acquired a 100% operated interest in the field via its January 2017 takeover of OMV (UK) Ltd. (OGJ Online, Nov. 9, 2016). Shell UK farmed in for a 30% interest in May.
Siccar Point describes Cambo as a large basement high with sedimentary sequences draped atop the structure.
Before the latest appraisal, five wells had been drilled in the field, the main reservoir of which is Tertiary Hildasay sandstone of fluvial-deltaic origin. Estimated oil in place exceeds 600 million bbl.
The operator says the Cambo area has potential in undrilled parts of the Hildasay reservoir; the Tertiary Colsay formation at the edges of the structure, which is productive at Rosebank field; and a fractured basement prospect underlying the discovery.
Siccar Point envisions two-phase development with the first phase targeting 90 million boe of oil and gas reserves.
