复合陶粒防砂技术研究与实践

复合陶粒防砂技术的胶结主体是由胶结主材料、水溶性的辅助材料及外加剂所组成。此材料在水浴环境中胶结固化,产生一定胶结强度及连通孔隙的胶结整体。这种胶结体形成于实体亏空较大的油层中,对松散的流砂起到相对固定作用,进而达到防砂目的。在对高含水期严重出砂油田有了重新认识以后,确定了人造岩层深部封堵、近井地带防砂的工艺思想。该技术对出砂严重,有注水能量补充的生产井具有较好的防砂效果,尤其对注水受益明显、底水大孔道、出砂严重的生产层更为适宜。现场施工80口井、110多井次,累计增产原油9.64万t,创直接经济效益3200多万元。

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).