国外特殊工艺井钻井液技术新进展

Recent Advances in Overseas Drilling Fluid Systems and Technologies for Non-conventional Wells

综述了国外研制和应用特殊工艺井钻井液体系方面的新进展 ,包括以下 4个论题。①水平井钻井液 :“微泡”钻井液 (Aphron钻井完井液 ) ;各种适用的聚合物钻井液 ;混合金属氢氧化物 (MMH)钻井液 ;低盐度聚合醇水基钻井液。②大位移井钻井液 :低毒性油基钻井液 ;各种合成基钻井液 ;借助特种乳化剂、可转变为水包油乳化钻井液的逆乳化钻井液。③小井眼井钻井液 :甲酸盐类钻井液 ;聚合醇 /碳酸钾水基钻井液 ;阳离子聚合物 /盐水钻井液(CBT)。④其他特殊工艺井钻井液 :连续油管 (CT)钻井液 ;多分支井钻井液选择 ;欠平衡钻井液 ;套管钻井液。图1表 3参 2 5。

The developments and uses of drilling fluid systems for non conventional wells abroad are reviewed and following topics are covered. ① Horizontal drilling fluids: Aphron drill in fluid 'micro bubbles'; selected polymer drilling fluids; mixed metal hydroxide (MMH) drilling fluid; low salinity polyglycol water based drilling fluid. ② Extended reach drilling fluids: low toxicity oil based drilling fluids; synthetic based drilling fluids; water in oil emulsified fluid with special surfactant convertible to oil in water one. ③ Slim hole drilling fluids: formate drilling fluids; polyol/potassium carbonate water based drilling fluid; cationic polymer/brine fluids (CBF). ④ Other noo conventional drilling fluids: coiled tubing (CT) drilling fluid; selected fluids for multibranch hole drilling; underbalanced drilling fluids; casing drilling fluids.