固井顶替界面研究方法分析

College of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China No. 1 Oil Production Plant, Daqing Oilfield Company Ltd., Daqing 163001, China Project Construction Department of Carbon Dioxide Miscible Flooding, Jilin Oilfield Project Management Company, Songyuan 138000, China

稳定平齐的顶替界面可以有效地防止钻井液对水泥浆的污染，降低环空钻井液的迟流和滞留现象，提高固井界面的胶结质量和环空封隔的效果。文中首先总结了固井顶替界面的主要影响因素，然后分析了3种固井顶替界面研究方法的优缺点，最后根据目前固井顶替界面研究的不足提出了今后的研究方向及相应建议：以二维Hele?鄄Shaw模型为基础，深化稳定顶替界面的形成机理及条件研究，并通过数值模拟和室内实验的方法进行验证，建立相应的注水泥稳定顶替界面参数设计方法及标准，并开发相应的通用软件，以便于现场应用。

Forming stable and level displacement interface can avoid drilling mud retention in the annular narrow clearance and slurry contamination, which will improve cementing bond quality. In this paper, we firstly analyzed the main affecting factors on displacement interface. Then, we introduced three present research methods of displacement interface and their advantages and disadvantages. Finally, in order to improve the accuracy of displacement interface studies, we gave some future researches and recommendations: It is necessary to improve the mechanism formation of steady displacement interface based on the 2D Hele-Shaw model and combining with 3D numerical simulation method and experimental method. Furthermore, providing a design method and criterion that are beneficial for forming a stable displacement interface for reference during cementing is needed. In order to facilitate the on-site applications, a useful software for designing displacement parameters should be developed as soon as possible.

10.6056/dkyqt201404033