高黏度膨润土钻井泥浆的制备工艺研究  

A Review on Preparation Technology of High Viscosity Bentonite Drilling Mud

作　　者：白轩豪 罗利明[2] 孙红娟[1,2] 雷洁 祁红彪 尹霞 陈喜冰 Bai Xuanhao;Luo Liming;Sun Hongjuan;Lei Jie;Qi Hongbiao;Yin Xia;Chen Xibing(School of Environment and Resources,Southwest University of Science and Technology,Mianyang,Sichuan 621010;Institute of Mineral Materials and Applications,Southwest University of Science and Technology,Mianyang,Sichuan 621010;Xinjiang Zhongfei Xiazi Street Bentonite Co.,Ltd.,Tacheng,Xinjiang 834409;China Kaolin Clay Co.,Ltd.,Suzhou,Jiangsu 215151)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]西南科技大学矿物材料及应用研究所,四川绵阳621010 [3]新疆中非夏子街膨润土有限责任公司,新疆塔城834409 [4]中国高岭土有限公司,江苏苏州215151

出　　处：《非金属矿》2025年第1期17-20,45,共5页Non-Metallic Mines

基　　金：中国建筑材料工业地质勘查中心揭榜挂帅专项资助(建地科[2022]05号);国家自然科学基金(42002039,42072048)。

摘　　要：基于蒙脱石优良的阳离子交换性及分散悬浮性,以新疆夏子街膨润土为原料,添加活性氧化镁制备了系列改性膨润土钻井泥浆,采用X射线衍射(XRD)、傅里叶红外光谱(FT-IR)、扫描电镜(SEM)、Zeta电位等分析测试手段研究了工艺条件对钻井泥浆理化性能的影响及作用机制。结果表明,加入活性氧化镁后,蒙脱石颗粒在悬浮液中形成了更聚集的絮凝态,从而显著提升了泥浆黏度。当MgO用量为8%,pH值为9时,改性泥浆在600 r/min的转速下黏度可达44 mPa·s;进一步增加泥浆的pH,其黏度最高可达61 mPa·s,满足钻井泥浆材料规范中的黏度要求。本研究为中低品位膨润土在钻井泥浆中的应用提供了试验基础与理论依据。Based on the excellent cation exchange and dispersion,suspension of montmorillonite,a series of modified bentonite drilling mud was prepared with Xiazi street bentonite in Xinjiang as raw material and added with active magnesium oxide.The influence of technological conditions on the physical and chemical properties of drilling mud and its mechanism were studied by XRD,FT-IR,SEM and Zeta potential.The results show that after adding active magnesium oxide,montmorillonite particles form a more aggregated flocculation state in suspension,which significantly improves the viscosity of mud.When the dosage of MgO is 8%and pH value is 9,the viscosity of modified mud can reach 44 mPa·s;at the rotating speed of 600 r/min.Further increasing the pH of mud,its viscosity can reach 61 mPa·s,which meets the viscosity requirements in drilling mud material specification.This research provides experimental and theoretical basis for the application of medium and low grade bentonite in drilling mud.

关 键 词：膨润土 活性氧化镁 泥浆性能 高黏度 PH调节 

分 类 号：TD985[矿业工程—选矿]