硅铝络合两性离子聚合物强抑制防塌钻井液体系在查干花地区的研究及应用

Study and Application of Silicon-aluminum Complex Amphitricha Polymer Strong Drilling Fluid System in Chaganhua Area

摘要:

针对查干花地区不同地层存在缩径、掉块和垮塌等井壁稳定问题，研制了一种硅铝络合两性离子聚合物强抑制防塌钻井液体系。结合室内水敏性、配伍性、滚动回收率实验，对该体系中的AOS-1（硅铝络合抑制防塌剂）的作用进行室内实验研究，并在查干花地区6口井进行了现场的应用。试验结果表明，新型强抑制性钻井液体系与其他处理剂配伍性好，抑制性强，能有效防止井壁失稳。

Abstract:

According to the hole-shrinkage, block-falling and collapsing in different formations of Chaganhua area, silicon-aluminum complex amphitricha polymer inhibition and anti-collapse drilling fluid system was developed. Laboratory test study was made on AOS-1 (silicon-aluminum complex inhibition and anti-collapse additive) with in-door water sensitivity, compatibility and roll recovery tests, which was applied in 6 wells of this area. Test results showed the good compatibility of the new strong inhibition drilling fluid to other treating agents with strong inhibition, and hole-shrinkage and collapsing were overcome.