新型防水锁剂的研究与评价  

Study and evaluation on new water repellent

作　　者：闫方平[1] YAN Fangping(Chengde Petroleum College,Chengde Hebei 067000,China)

机构地区：[1]承德石油高等专科学校,河北承德067000

出　　处：《石油化工应用》2018年第3期48-51,共4页Petrochemical Industry Application

摘　　要：室内实验研究表明,防水锁剂G-7、D-4性能较好,在常温及140℃老化后对膨润土浆流变性、滤失量影响较小。防水锁剂D-4在加量0.3%时就能够显著降低膨润土浆的润滑系数,润滑效果明显;同时降低油水表面/界面张力能力较强,有利于钻井液滤液的返排,从而有利于地层渗透性的恢复。Indoor laboratory research shows that waterproof agents G-7 and D-4 have a bet-ter performance and has a little influence on the rheology and filter loss of bentonite slurry.Waterproof agents D-4 can reduce the lubrication factor of bentonite slurry obviously when adding 0.3%and have better lubricating effect.At the same time,it can also reduce oil-water interfacial tension which benefits drilling fluid filtrate flowback and the recovery of formation permeability.

关 键 词：防水锁剂 流变性 滤失量 润滑系数 表面/界面张力 

分 类 号：TE254.4[石油与天然气工程—油气井工程]