钻井完井中动态外滤饼形成的数学模型研究  

Mathematical Model Developed for External Filter Cake during Drilling and Completion

作　　者：熊汉桥[1] 王平全[1] 任富鹏[1] 李再钧[2] 杨江宇[3] 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]中国石油塔里木油田公司,新疆库尔勒841000 [3]中国石油长庆油田公司,陕西榆林719000

出　　处：《天然气技术》2010年第1期42-44,共3页NATURAL GAS TECHNOLOGY

摘　　要：在钻井完井作业中,滤饼质量直接影响到井壁稳定和对油气层的保护,滤饼质量差将会造成井下复杂情况以及井壁垮塌和油气层伤害等。因此,形成致密、薄、韧、低渗透的滤饼甚为关键。在研究钻井完井液中固相颗粒侵入地层造成地层损害的基础上,建立了固相颗粒在静、动态条件下形成外滤饼的数学模型,量化了滤饼质量与各相关参数之间的关系,并通过塔里木油田现场实践进行验证。综合分析认为,数学模型对钻井完井过程有一定的指导意义。During drilling and completion, the quality of filter cake can affect directly both borehole stability and reservoir protection. Poor cake will result in complex downhole condition as well as serious borehole collapse and formation damage. Therefore, it is very important to develop a kind of tight, thin, flexible and low-permeability filter cake. In this study, based on the research of formation damage caused by solid particle invading into forma- tion, a mathematical model is developed for external filter cake under static and dynamic condition. Moreover, the relationship between cake quality and relevant parameter has been quantized and then verified by lab experiment.

关 键 词：数学模型 地层损害 钻井完井液 滤饼 滤液侵入 

分 类 号：TE254[石油与天然气工程—油气井工程]