钻井液用阳离子甲基葡萄糖苷

Study on Cation Methyl Glucoside Used in Drilling Fluid

针对甲基葡萄糖苷在钻井液中加量大、抗温性较差、抑制性有待提高等缺陷,在甲基葡萄糖苷分子上引入季铵盐的结构,合成了阳离子甲基葡萄糖苷CMEG。实验结果表明,合成出的CMEG具有很好的表面活性和润滑性,5%CMEG水溶液的表面张力为30.9 mN/m,摩阻系数仅为0.16(与油基钻井液相当),有助于提高采收率和加快钻井速度;具有优异的抑制页岩水化膨胀(相对回收率高达99.01%)和抗高温(150℃)的能力,且配伍性较好,能与其他处理剂产生协同作用。CMEG性能都优于甲基葡萄糖苷,预计在钻井液中具有极好的应用前景。

In this paper, the cation methyl glucoside (CMEG) is synthesized by inducting quaternary ammonium group to MEG molecule chain to overcome disadvantages of MEG.The experimental results show that CMEG has excellent surface activity, inhibition, temperature resisting and lubricity, in which, surface tension is 30.9 mN/m, cuttings relative recovery is more than 99.01 %, resisting temperature is higher than 150 ℃, and lubrication coefficient is 0.16.It is predicted that CMEG has very wide prospects in drilling fluid technology.