“特殊复杂地层井壁固结技术研究”与“泥页岩井壁稳定的物理化学-力学耦合研究”,是石油大学承担的总公司“九五”重点项目《强化稳定井壁的机理研究》中的两个子课题(前项为石油大学(华东)承担,后项为石油大学(华东)和石油大学(北京)共同承担),经过近两年的努力,已取得了可喜的阶段性成果。 在“特殊复杂地层井壁固结技术研究”课题中,石油大学的有关科研人员针对目前钻井工程中迫切需要解决的井壁不稳定问题,选择了两类特殊复杂地层作为本课题的研究对象:一类是大段松散砾岩与脆性强分 “Study on Consolidation of Shaft Wall Consolidation in Special Complicated Stratum” and “Physico-Chemical Coupling Study on Shaft Wall Stability of Shale” is a key project of “Intensification of Stabilization of Shaft Wall” undertaken by the University of Petroleum in the Ninth Five-Year Plan (The former is undertaken by the University of Petroleum (East China) and the latter is shared by the Petroleum University (East China) and the University of Petroleum (Beijing)). After nearly two years of hard work, they have made gratifying and phased achievements. In the project of “Study on Consolidation Technology of Wells and Walls in Complicated Complex Stratum”, the researchers concerned of the University of Petroleum selected two kinds of special and complicated strata as the research objects of the subject in view of the urgent need to solve the borehole wall instability problem in the current drilling engineering: One is a large section of loose conglomerate and brittle strong points