ABSTRACT:

Marginal fields are those ones with uncertain economics, high risk factor and doubtful profitability. They include fields with small reserves in harsh, remote areas that are located far from facilities. With the end of the age of easy to find giant structures, those marginal fields are the targets of exploration and development. Innovative technologies and management practices are required to handle such fields. Qattara Depression in the Western Desert of Egypt is one of the harshest on land areas in the world. Several small fields were discovered lately in this area. The development of these fields required a judicious approach that concentrate on minimizing expenditure and realizing production as soon as possible along with the application of suitable technology. The plan calls for phasing of the operations in a manner that complement and lead to each other with enough flexibility to accommodate change. Use of the available and nearby facilities either in the company or with neibouring companies improves the development economics and speeds up production. Early production strategy allows for collecting data to define reservoir parameters of oil - in place and natural driving energy while generating cash. The gained information are used to guide field appraisal and shaping up of an operating plan that maximizes profit while minimizing investment and risk. This paper will review and analyze the development plans for small fields operated by Agiba in the Qattara Depression. Lessons learned from such experience will be highlighted, and the developed reservoir management approach will be discussed.

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