Project Profile
Location: Chewa-Pweza-Ngisi hub, Tanzania
Reserves: 4.5 TCF
Water Depth: Up to 3,000m
Start-up Year: -
Ophir Energy successful finished its drilling programme in Block 4 Tanzania and the upgrade of the recoverable resource across the Chewa-Pweza-Ngisi hub in Block 4 to 4.5 TCF. Ngisi-1 was drilled approx. 5km to the North East of the Chewa-1 well. The Ngisi-1 well was drilled by the Deepsea Metro I drillship approx. 5km to the North East of the Chewa-1 well. It was designed to appraise the Chewa gas discovery drilled in 2010 and to penetrate the Ngisi exploration prospect. On completion of the initial well, two sidetracks were undertaken to further delineate both Chewa and Ngisi. Gas pay was encountered in the Ngisi prospect within a high net to gross reservoir interval. The penetrations into the Chewa reservoir also encountered gas pay as prognosed and confirmed widespread, excellent reservoir characteristics. As a result, these wells have increased the mean recoverable resource of the Chewa-Pweza-Ngisi hub from 3.7 TCF to 4.5 TCF, in excess of pre-drill expectations, in addition to derisking exploration upside in several nearby targets. The successful Ngisi drilling results provide critical mass for the aggregation and development of the gas discoveries in Block 4.
Operators:
Shell: Operator with 60% interest
Ophir Energy: 40% interest
Contractors:
Odfjell Drilling: Drilling services contract using the Deepsea Metro I drillship
Genesis Oil and Gas Consultants Ltd. (Technip subsidiary): Contract for the Upstream Concept Select Study for the deepwater gas discoveries with scope including the upstream facilities, concept selection, and pre-front-end engineering and design.