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发明公开
CN107163921A 一种油基钻井液及其制备方法 无效 - 驳回

一种油基钻井液及其制备方法
摘要：
本发明提供了一种油基钻井液及其制备方法。以质量百分比计，所述油基钻井液包括如下组分：CaCl2溶液10％‑30％，改性有机土2.0％‑4％，主乳化剂1.0％‑2.0％，辅乳化剂1.0％‑2.0％，改性橡胶封堵剂1.0％‑2.0％，树脂类降滤失剂1.0％‑2.0％，磺化沥青类降滤失剂1.0％‑2.0％，润湿剂1.0％‑2.0％，碱度调节剂1.0％‑1.5％，加重剂，余量为基础油，其中，所述CaCl2溶液的质量分数为20％‑25％，溶剂为水；所述加重剂的用量用于调节所述油基钻井液的密度为0.95g/cm3‑2.00g/cm3；所述基础油包括经脱硫脱芳处理的原料油。
摘要（英）：

The invention provides oil-based drilling fluid and a preparation method thereof. The oil-based drilling fluid comprises the following components in percentage by weight: 10-30 percent of a CaCl2 solution, 2.0-4 percent of modified organic soil, 1.0-2.0 percent of a main emulsifying agent, 1.0-2.0 percent of an auxiliary emulsifying agent, 1.0-2.0 percent of a modified rubber plugging agent, 1.0-2.0 percent of a resin type filtrate reducer, 1.0-2.0 percent of a sulfonated asphalt type filtrate reducer, 1.0-2.0 percent of a wetting agent, 1.0-1.5 percent of an alkalinity regulator, a weighing agent and the balance of base oil, wherein the mass fraction of the CaCl2 solution is 20-25 percent, and a solvent is water; the weighing agent is used for regulating the density of the oil-based drilling fluid to 0.95-2.00 g/cm<3>; the base oil comprises raw material oil after desulfurization and dearomatization treatment.

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