国外油基钻井液提切剂的研究与应用进展  

Progress on Study and Application on Rheology Modifier for Oil-based Mud Aboard

作　　者：冯萍[1] 邱正松[1] 曹杰[1] 刘智成[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257061

出　　处：《钻井液与完井液》2012年第5期84-88,101-102,共5页Drilling Fluid & Completion Fluid

基　　金：国家自然科学基金项目"页岩气储层保护机理及方法研究"(41072094)

摘　　要：采用有机土调控油基钻井液流变性,存在活化慢、易高温稠化失效的弊端。以油基钻井液提切剂部分或全部替代有机土能有效解决该问题。在调研国内外文献资料的基础上,综述了油基钻井液提切剂分子结构的发展变化,分析了其通过形成氢键和分子间缔合提高钻井液低剪切速率黏度的作用机理,介绍了其性能评价参数和测试低剪切速率动切力(LSYP)的新型4刃转子,将钻井液的LSYP值控制在3.6～7.7 Pa之间,能防止钻屑和重晶石沉降。最后,以恒流变油基钻井液、微泡油基钻井液等为例,介绍了提切剂的应用和效果。Using organic clay to control the rheology of oil-based mud,there are some drawbacks,such as needing more time to activate and being damaged at high temperature.These problems can be solved by total or partial replacing the organic clay to rheology modifier.In this paper,based on the investigation of literatures,the development of molecule structure,the mechanism of enhancing the low-shear-viscosity by hydrogen bond and molecular association are summarized.Moreover,the parameters for performance evaluation and 4-blade vane for measurement of LSYP are introduced.The results show that the settling of drill cuttings and barite can be avoided by controlling the LSYP in the range from 3.6-7.7 Pa.The application of constant rheology and micro-foam oil-based mud systems are introduced to show the effect of the rheology modifier.

关 键 词：油基钻井液 提切剂 研究进展 性能评价 应用 

分 类 号：TE254.4[石油与天然气工程—油气井工程]