介绍了国内外钻井液、完井液、保护油气层等用油田化学品的研究及应用的现状；提出正电性钻井液体系是今后钻井液及完井液的发展方向；油田化学品的发展趋势是：在油田化学新理论指导下，进行油田化学品分子设计、开发新型单体、合成新型聚合物及开发符合环保要求的多功能天然高分子聚合物改性产品等。

This paper summarizes the current research and applications of oil field chemical additives in drilling fluids, completion fluids, and reservoir protection, and holds the view that the research and applications of the positive ion drilling and completion fluid system should be the development orientation in the future. For the development trend of oilfield chemical additives, it is, guided by new oilfield chemistry theory, to design molecules, develop new-style monomers, synthesize new types of polymers, and develop modified products of multifunctional natural polymers with environmental-amity.