基于老化油研制钻井液用润滑剂

Lubricant for Drilling Fluid Based on Aging Oil

李家学 邢晓凯 鲁文君 孙杰 卫雨涵

LI Jiaxue XIN Xiaokai LUWenjun SUN Jie WEI Yuhan

油田地面生产的副产品老化油具有复杂的界面特性，脱水处理困难。利用老化油的乳化稳定性能，将老化 油用于制备钻井液用润滑剂，可避免脱出老化油中的泥、砂、水。优选了该润滑剂的组分及加量，评价了润滑剂 的性能。结果表明，基于老化油研制钻井液用润滑剂的乳化剂为烷基酚聚氧乙烯醚（OP-4）、润湿剂为十二烷基 苯磺酸钠（ABS）、稳定剂为羧甲基纤维素钠（Na-CMC）。最佳配方为：100 mL钻井液+3 mL老化油+1.5 g OP-4+ 0.15 g ABS+0.015 g Na-CMC。在膨润土基浆中加入润滑剂，体系的密度、表观黏度和泥饼黏附系数均符合企业 标准的要求。以老化油作为基础油研制钻井液用润滑剂是一种可行的老化油资源化处理方案。

Aging oil，a by-product of oilfield surface production，has complex interface characteristic，as a result，it is difficult to be dehydrated. Using aging oil to develop lubricant for drilling fluid can make use of its emulsifying stability and avoid the difficulties of removing mud，sand and water from aging oil. The components and dosage of lubricant were optimized，and then the performance of lubricant was evaluated. The results showed that the emulsifier for developing lubricant based on aging oil was alkylphenol polyoxyethylene ether（OP-4），the wetting agent was sodium dodecylbenzene sulfonate（ABS），and the stabilizer was sodium carboxymethyl cellulose（Na-CMC）. The optimum formula was obtained as follows：100 mL drilling fluid，3 mL aged oil， 1.5 g OP-4，0.15 g ABS and 0.015 g Na-CMC. The density，apparent viscosity and sticking coefficient of mud cake of the system met the requirements of enterprise standards after the lubricant was added to the bentonite based slurry. Using aged oil as base oil to develop lubricant for drilling fluid was a feasible resource utilization scheme for aged oil.

10.19346/j.cnki.1000-4092.2023.03.001