MMH的结构与提粘提切机理研究  

A STUDY ON THE CRYSTAL STRUCTURE OF MMH AND THE THICKENING MECHANISMS IN MMH MUD

作　　者：韩书华[1] 侯万国[1] 孙德军[1] 张春光[1] 王果庭[1] 

机构地区：[1]胶体与界面国家教委开放实验室山东大学胶体与界面化学研究所

出　　处：《油田化学》1997年第4期299-303,共5页Oilfield Chemistry

摘　　要：本文利用Ｘ射线衍射仪，微电泳仪对ＭＭＨ的晶体结构，等电点（ＩＥＰ）进行了研究。结果表明，ＭＭＨ是属于六方晶系的晶体，其表面电荷密度的理论值是蒙脱土的２—４倍，表面羟基呈碱性；ＭＭＨ提粘提切机理：一是ＭＭＨ同蒙脱土的静电引力；二是两种颗粒表面羟基的氢键化作用，这两种作用是协调一致的。The crystal structure of MMH and its thickening mechanisms in mud are studied by X ray diffraction and isoelectric point measurements. It is shown that the crystal lattice of MMH is hexagonal and the lattice parameters c and a increase with Mg/Al ratio; the value of surface charge density of MMH theoretically calculated is 2—4 times larger than that of montmorillonite; the sufrace hydroxyls are of basicity; the mechanisms involved in MMH mud thickening are:(1) strong electric attraction between MMH and montmorillonite particles; (2)hydrogen bond formation between surface hydroxyls of these particles.

关 键 词：MMH 晶体结构 钻井液 提粘提切机理 

分 类 号：TE254.4[石油与天然气工程—油气井工程] O76[理学—晶体学]