采用理论分析、模拟实验和工程探测等方法，就覆岩主关键层位置对导水裂隙带高度的影响进行深入研究。
Theoretical analysis, simulation experiment and engineering exploration are adopted to study the impact of the location of primary key stratum on the evolution range of water flowing fracture.
正确评价稠油加密井水淹层位和强度是提高稠油加密井开采效果的关键。
Proper evaluation of the position and strength of watered-out zones is the key to improve recovery efficiency of infilled heavy oil Wells.
低渗透储层的射孔技术必须配合压裂增产改造技术而开展，其中射孔层位优化是其关键问题之一。
Perforation technology of low permeability reservoir must be combined with fracturing technology, and the optimization of perforated intervals is one of the key problems.
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