在1992年北京国际发明展览会上,大庆油田设计院的两项专利均获铜牌奖。“内涂衬钢管焊口区内壁防腐装置”获国家“实用新型”专利,专利号91219405.7。该技术采用牺牲阳极保护的方法进行内壁防腐。适用于φ60mm 以上的钢质管道,防腐保护效果好,保护期达5～20年。“原油消泡剂及其制备方法”获国家“发明”专利,专利号86106653.7。该消泡剂 At the 1992 Beijing International Invention Exhibition, both patents of Daqing Oilfield Design Institute won bronze awards. “Inner lining steel pipe wall area anti-corrosion device” by the national “utility model” patent, patent No. 91219405.7. The technology uses sacrificial anode protection for wall corrosion. For φ60mm steel pipe above, anti-corrosion protection effect is good, the protection period of 5 to 20 years. “Crude oil defoamer and its preparation method” by the state “invention” patent, patent No. 86106653.7. The defoamer