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预测地层压力异常,是发现高压油气藏的一种有效手段,同时亦有助于减少钻井事故,提高钻井效率,指导深井钻井,确定完井方案等,因而有重要的生产意义及较高的经济价值。本文从地层沉积的机理出发,分析了压实的作用,探索了影响压实的诸因素,并对高压地层的形成及其一些特点作了叙述。文中对预测技术分别通过实例作了说明。目前,国内正在开展高压地层的分析研究和预测。因此,有必要加以强调,以引起人们普遍的重视,特别在石油普查探勘阶段。
Predicting formation pressure anomalies is an effective means of discovering high-pressure reservoirs, as well as reducing drilling accidents, improving drilling efficiency, guiding deep-well drilling and determining completion plans. This has important implications for production as well as higher economy value. Based on the mechanism of stratum deposition, the paper analyzes the effect of compaction, explores the factors that affect compaction, and describes the formation and some characteristics of high pressure strata. In this paper, the forecasting techniques are described by examples. At present, China is carrying out analysis and prediction of high-pressure strata. Therefore, it is necessary to emphasize it to arouse widespread attention, especially during the exploration phase of the oil census.