钻井液用低荧光高效极压润滑剂 BDLU-100L的性能研究

Performance of Low Fluorescence and High Efficiency Extreme-pressure Lubricant BDLU-100L for Drilling Fluid

刘建军 刘晓栋 王 彪

LIU Jianjun，LIU Xiaodong， WANG Biao

为获得荧光等级低、润滑性能好的钻井液用润滑剂，以白油为基础油，辅以高效乳化剂、极压剂氯化石蜡和渗透剂琥珀酸烷基酯磺酸钠制备了一种低荧光高效极压润滑剂 BDLU-100L，研究了 BDLU-100L的荧光级别、乳化稳定性、润滑性能和抗温耐盐性能，考察了 BDLU-100L对钻井液流变及失水造壁性能的影响。结果表明， BDLU-100L荧光等级小于3级、乳化稳定性好、抗温达 200℃、抗盐达饱和。BDLU-100L润滑性能良好，加量为 0.5%时可使淡水浆润滑系数降低 90%以上，加量为 3%时可使海水、复合盐水及饱和盐水基浆的润滑系数分别降低 82%、73%和71%；对淡水和高温高密度钻井液流变性能的影响较小，适用于200℃以下的高含盐钻井液和高密度钻井液体系。图2表3参14

In order to obtain lubricant for drilling fluid with low fluorescence level and good lubricating performance，a lubricant BDLU-100L was prepared by white oil，high efficiency emulsifier，extreme pressure agent chlorinated paraffin and penetrant succinate sodium alkyl sulfonate. The properties of BDLU-100L，such as fluorescence level，emulsifying stability，lubrication，temperature tolerance and salt resistance，and the effect on the rheological and wall building properties of drilling fluid were studied. The results showed that the fluorescence level of BDLU-100L was lower than three level. BDLU-100L had good emulsifying stability，and could be used at 200℃ and saturated brine. The lubrication coefficient of fresh water drilling fluid was reduced more than 90% by 0.5% BDLU-100L，and that of seawater，compound salt water and saturated brine water drilling fluid was reduced by 82%，73% and 71% respectively with 3% BDLU-100L addition，showing good lubricity. BDLU-100L had little effect on the rheological properties of fresh water drilling fluid and high temperature and high density drilling fluid. It applied to the high brine and high density drilling fluid below 200℃.

10.19346/j.cnki.1000-4092.2016.06.003