Fifteen kinds of agents commonly used in oilfield were reviewed,including pre-crosslinked gel particles,polymer gel,bulk expansion particles,foam and modified materials,among which polymer gel is still the most widely used plugging agent in oilfield.Based on this,composite regulated flooding,fracturing and water plugging,plugging and deep regulated flooding and other technologies are also developed.Lat-er,through the demonstration of wet phase modified expansible graphite,new diluent inorganic precipita-tor,active aging plugging agent,high strength plugging composite materials,combined with the develop-ment of the new technology,the oil recovery can be further improved.
关键词
高温高盐/堵调堵剂/改性材料/互穿网络/堵调工艺
Key words
high temperature and high salt/plugging agent/modified material/interpenetrating network/plugging technology
维普
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