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| 用冷冻干燥技术研究钻井液及泥饼的微观结构 | |
| 引用本文： | 张达明,徐同台,牛亚斌,魏宝和. 用冷冻干燥技术研究钻井液及泥饼的微观结构[J]. 钻井液与完井液, 1995, 0(3) |
| 作者姓名： | 张达明 徐同台 牛亚斌 魏宝和 |
| 作者单位： | 石油勘探开发科学研究院(张达明，牛亚斌)，中国石油天然气总公司(徐同台)，石油勘探开发科学研究院(魏宝和) |
| 摘 要： | 冷冻干燥枝术是用液氮快速冷冻样品,并在真空状态下抽空干燥,保持样品的微观结构不变,得到的干样可用于电镜分析。采用此项技术分析了膨润土基浆、成水基浆、不同配比的聚合物钻井液及相应泥饼的微观结构。电镜分析表明:在膨润土淡水基浆中,粘土片以端—面和端—端相连形成蜂窝状结构或卡片房子结构;在聚合物钻井液中,聚合物吸附在粘土表面上,并相互连接形成了网状和蜂窝状结构;基浆和聚合物钻井液泥饼也呈蜂窝状结构,蜂窝的孔隙大小及分布随钻井液配比不同而变化,重晶石、超细CaCO_3和磺化沥青可起到封堵泥饼孔隙和降低滤失的作用。 |
| 关 键 词： | 钻井液 滤饼 冻结 干燥 聚合物钻井液 微观结构 结构分析 |
Investigation on the microstructure of drilling fluids and filter cakes by cryogenic drying method |
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| Zhang Da -Ming,Research Institute of Petroleum Exploration and Development. Investigation on the microstructure of drilling fluids and filter cakes by cryogenic drying method[J]. Drilling Fluid & Completion Fluid, 1995, 0(3) | |
| Authors: | Zhang Da -Ming Research Institute of Petroleum Exploration Development |
| Abstract: | Cryogenic drying method is adopted to investigate the microstructure of drilling fluids and filter cakes . Drilling fluids and filter cakes are first treated in liquid nitrogen , then dried in vacuum condition to make water subliming , finally investigated by SEM . 15 SEM photos are given , including fresh water mud , salt water mud , polymer mud , filter cakes and polymer solutions . It is shown that filter cakes can be improved by adding polymer materials , and inner materials are embedded in the pore of filter cakes . |
| Keywords: | Filter Cake Water Base Mud Drilling Fluid Testing Polymer Polymer Mud |
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