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依据两性离子聚合物处理剂及其作用机理的研究,建立了以两性离子聚合物包被剂FA367及降粘剂XY27为主体,并配合其它种类的辅助处理剂,开发出满足不同类型地层特点和钻井工程要求的4种泥浆体系,即两性离子聚合物无固相泥浆、两性离子聚合物低固相泥浆、两性离子聚磺泥浆及两性离子聚合物完井液。这4种类型泥浆先后在15个油田推广,在增强泥浆体系的抑制性,控制地层造浆、保持泥浆的低固相含量,防止井塌实现井壁稳定,降低井径扩大率,防止事故和减少井下复杂情况的发生,改善泥浆流变性,充分发挥喷射钻井效益,提高钻井速度及保护油气层诸方面,都见到了显著效果。
Based on the study of the amphoteric ion polymer treatment agent and its mechanism of action, we have established the amphoteric ion polymer coating agent FA367 and the viscosity reducer XY27 as the main body, combined with other kinds of auxiliary treatment agent, developed to meet the different types of formation characteristics and The four mud systems required for drilling engineering are zwitterionic polymer-free solid slurries, zwitterionic polymer low-solids slurries, zwitterionic polysulfonates and zwitterionic polymer completion fluids. The four types of mud have been in 15 oil fields to promote, inhibit the mud system to enhance, control the formation of slurry, to maintain a low solid content of the mud to prevent well collapse to achieve stability of the shaft wall, reducing the caliper expansion rate and prevent accidents and Significant results have been observed in reducing downhole complexities, improving mud rheology, giving full play to jet drilling benefits, improving drilling speed and protecting the hydrocarbon zone.