无固相钻井液体系的室内研究(Ⅰ)  

The indoor research of solid free drilling fluids(Ⅰ)

作　　者：邓强[1] 陈刚[1] 张洁[1] 菊建峰[1] 

机构地区：[1]西安石油大学化学化工学院,陕西西安710065

出　　处：《石油化工应用》2010年第1期8-13,共6页Petrochemical Industry Application

基　　金：国家自然科学基金项目(No.50874092);西安石油大学博士科研启动项目(Z08008)

摘　　要：利用漏斗粘度法考察了增粘剂、降滤失剂、油层保护剂和加重剂对钻井液粘度的影响，确定了无固相钻井液初始配方范围为：增粘剂1％～3％、降滤失剂1％-3％、油层保护剂1％-3％、加重剂适量。通过L25（5^5）正交实验，从粘度、切力、滤失量等性能对钻井液配方进行优化，确定了无固相钻井液配方为：增粘剂2％、降滤失剂2％、油层保护剂2％、加重剂适量。此钻井液静切力小，表观粘度42．1mPa·s，动切力11．3Pa，润滑系数0．0787，API滤失量5．5mL，HTHP滤失量14．2mL。The impact of tackifier, fluid loss additive, reservoir protection agents and weighting agents on the fluid viscosity funnel by Marsh funnel. The initial formula of solid free drilling fluid was chosen as： 1%-3 % tackifier, 1%-3 % fluid loss additive, 1%-3 % reservoir protection agents and appropriate dose of weighting agents. In consideration of the influence of viscosity, shear and filtration performance, the result of L25 （5^6）orthogonal experiment gave the optimized formula： 2 % tackifier, 2 % fluid loss additive, 2 % reservoir protection agents, appropriate dose of weighting agents. The properties study showed the gel strength was slight, the apparent viscosity was 42.1 mPa ·s, yield point was 1.3 Pa, lubrication coefficient was 0.0787, API filtration rate was 5.5 mL and HTHP filtration rate was 14.2 mL.

关 键 词：无固相 钻井液 漏斗粘度 正交试验 

分 类 号：TE254.3[石油与天然气工程—油气井工程]