RESEARCH AND PRACTICE OF COMPOSITE CERAMSITE SAND CONTROL TECHNIQUE

The main cementing part of the composite ceramsite sand control technique is composed of the main cementing material,the water soluble auxiliary material and the adding agent. These materials can be cemented and solidified in aqueous environment,and form a cemented body with certain cementing strength and connection pores. This kind of cemented body is formed in the oil reservoir with larger solid voidage,can fix the loose sands in some degree,and thus attain the object of sand control. After further understanding the serious sand producing field at the stage of high water cut,it has been decided to implement the technology of plugging in deep reservoir and sand controlling near well bore with man-made rock layer. This technology possesses good sand control effect to producers flooded by water, and is especially suitable to production layers with the characteristics of obvious benefit from water injection,bottom water,large pore passages and serious sand production. This technology had been used in 80 wells for more than 110 times,increased cumulatively oil 96100t,and earned directly economic benefit more than 32 million￥(RMB).