Abstract:

Located in the south of central transitional zone of the Fula sub-basin,northeastern Muglad Basin,Sudan,the Fula N is a structural-hydrodynamic heavy oil pool with shallow burial depth,loosely cemented reservoir,high porosity and permeability,and active bottom water.These features make the CHOPS(cold heavy oil production with sand) a suitable technology for the development of the pool.Matching technologies,such as completion with bigger size casing and long sand pocket and protection of interbedded shale in thick oil layer during perforation,are adopted,achieving an average daily production of more than 100 m³ from single well.In wells with severe sand problem,the production technology known as "limited sand control" is used to reduce the ope-ration cycle and cost,and enhance the economic returns.

Key words: structural-hydrodynamic oil pool, development experience, cold heavy oil production with sand(CHOPS), Fula N oil pool, Fula sub-basin, Sudan