Thursday, 6 December 2012
200 million barrels of oil confirmed in offshore Tunisia
The Hammamet West Oil Field was discovered in 1967 by the Hammamet West-1 exploration well, which discovered 7 meters of oil on rock in the Birsa sandstone formation. In 1990 the Hammamet West-2 appraisal well discovered a further 192 meters of oil in the deeper Abiod carbonate formation. The Abiod was production tested and 33° API oil was recovered but the reservoir was deemed to be tight. A review of the well test has indicated that the Abiod was tested by cementing in the production casing, which is not considered to be prudent production practice for a reservoir that depends on natural fractures for productivity.
Evaluation of the Hammamet West-2 core and image logs demonstrate that natural fractures do exist in the Abiod and a well drilled with the appropriate drilling technology may produce at economic rates.