KCl/Polyplus钻井液在冀东油田M16×3井三开井段的应用  

The Application of KCl/PolyPlus Mud in the Third Interval of Well M16×3 in Jidong Oilfield

作　　者：胡勇科 白亮清[1] 杨景中[1] 晋新伟 王桂军[1] 汪明政 

机构地区：[1]冀东油田分公司勘探开发工程监督中心

出　　处：《钻井液与完井液》2008年第5期70-72,共3页Drilling Fluid & Completion Fluid

摘　　要：针对冀东油田馆陶组中部、东营组二段及三段采用常规聚合物钻井液钻井时,钻井液抑制性差、复杂情况多、机械钻速低、油层保护效果不理想等问题,在M16×3井三开井段采用了KCl/PolyPlus水基钻井液。该体系主要由生物聚合物增黏剂、泥页岩稳定剂、包被剂、抑制剂、杀菌剂等组成。该体系有害固相含量低,泥饼质量好,能最大限度地防止固相颗粒对储层造成的损害。现场应用表明,KCl/PolyPlus水基钻井液性能稳定,具有独特的流变性,抑制防塌性能好,润滑防卡能力强,井眼净化效果好,钻进过程中没有发生阻卡、井漏及其它复杂情况,钻速快,满足了该井的钻井工程需要;钻井液荧光级别低,不影响录井,是一种适合该地区探井钻井的优质钻井液。Conventional polymer mud had been used in Jidong oilfield to drill the Guantao formation and the member 2 and member 3 of the Dongying formation.The polymer used had a poor inhibitive capacity and the penetration rate was generally low.Downhole troubles were frequently encountered during drilling.In well M16×3,the mud was changed to KCl/PolyPlus water base mud,which was formulated with biopolymer,shale inhibitor and encapsulator,and bactericide etc.Field practice showed that KCl/PolyPlus fluid had stable properties and rheology,and good lubricity.No bore hole sloughing was again encountered,and hole cleaning was satisfactory.Penetration rate was higher compared with conventional drilling fluids.

关 键 词：水基钻井液 井眼稳定 井眼净化 防止地层损害 冀东油田 

分 类 号：TE254.3[石油与天然气工程—油气井工程]