RESEARCH AND APPLICATION ON THE COMPLETION FLUID FOR UNCONSOLIDATED SAND FORMATION

Due to the behaviors of middle water and salt sensitivity,poor rate sensitivity in Chengdao Guantao sets,This paper recommends the optimized completion fluid system for reservoir protect in Chengdao oil Field by the study of the agent of preventing sand inflation and oil emulsification,and laboratory and field experiment have conducted with the completion fluid system.The result indicates this system can prevent mud inflation and sand control effectively,protected the formation from damage.As its basic liquid is the filtered sea water,which can be acquired by 90% locally,therefore it can save the material expenses consumedly,lower the workover cost and increase economic benefit.