Jonah liberated by technology

摘要

The historical account says that Jonah was in the belly of a whale for 3 days before he was freed. Pinnacle Technologies assisted BP in trying to free natural gas locked in its wells in Jonah for more than 65 million years! The Jonah field is located in Sublette County, Wyo., approximately 70 miles (113 km) north of Rock Springs. The field is a large, structurally complicated wedge-shaped fault trap located in the northwestern part of the Green River Basin. Production is primarily from overpressured and tight sandstones in the Cretaceous Lance formation. The Lance formation in Jonah field is composed of a stacked sequence of 20 to 50 fluvial channel sands interbedded with associated over-bank siltstone and flood-plain shale deposits. Gross interval thickness ranges from 2,800 ft to more than 3,600 ft (854 m to more than 1,098 m). Within this interval the net-to-gross ratio varies from 25% to 40%.