我国储层保护技术实现跨越式发展

“七五”国家重点科技攻关项目的开展，使我国储层保护技术整体面貌发生了根本性的变化，取得了一批具有20世纪80年代末国际先进水平的成果，此后的大规模技术培训和推广应用更新了技术观念，使各项作业的技术水平上升至一个新高度。文章总结了“九五”以来我国在探井保护油气层技术、欠平衡钻井储层保护技术、裂缝性致密砂岩气层保护技术、增产改造储层保护技术、开发生产及EOR保护技术等领域的重要新进展，其科技进步标志着我国储层保护技术已经实现了从孔隙型向裂缝性储层、从常规中低渗油气藏向非常规油气藏、从油气开发井向探井、从钻井完井过程为主向以增产改造和开发生产及EOR过程为主的跨越。文章还分析了目前储层保护技术需求，指出了非常规、复杂油气藏的勘探开发应以最大程度地减小储层损害为基本目标，以储层保护的思路统领各项工程作业，不断完善优化，并形成系列配套技术。

CHINA'S RESERVOIR PROTECTION TECHNOLOGIES DEVELOP IN LEAPS

The State key scientific and technological research projects performed during the "7th Five Year Plan" had fundamentally changed the entire look of China's reservoir protection technologies, and many achievements had caught up with the advanced world levels by the end of 1980s. Extensive technical training and deployment carried out thereafter have updated people's technical conceptions, and improved the technical levels of various operations. This paper summarizes the significant new advancements of oil and gas reservoir protection technologies, such as oil and gas reservoir protection in exploration wells, reservoir protection during underbalanced drilling, protection of fractured tight gas sand reservoir, and reservoir protection during stimulation, development, production and EOR. These technical advancements marked that China's reservoir protection technologies have realized leaps from porous reservoirs to fractured reservoirs, from conventional medium-to-low permeability reservoirs to unconventional reservoirs, from oil and gas producers to exploration wells, and from application mainly in drilling and completion processes to application in stimulation, development, production and EOR processes. This paper also analyzes the current demands of reservoir protection technologies. It is pointed out that minimization of reservoir damage should be taken as the basic target during exploration and development of unconventional and complex oil and gas reservoirs, and that all operations should be guided by the idea of reservoir protection, so as to develop a complete suite of technologies through continuous improvement and optimization.