升压法测调技术在低渗透油田中的理论研究及应用

Research of Boosting Measurement and Adjustment Technology in Low Permeable Oilfield

针对降压法测调时压力曲线会出现先降后升的变化从而影响资料稳定期的问题,通过理论研究得到升压法测调的数学模型和理论图版,阐明了升压法测调对测试曲线稳定性、延长测试周期起到的重要作用。通过对升、降压法测调在不同油田区块现场测试数据进行分类、统计,并结合油田的地质特征和吸水特性分析出影响降压法测调效果的主要因素,进一步确定影响因素的主次关系。现场数据分析结果表明,升压法测调在分析层间吸水能力、延长测调稳定周期等方面具有明显优势。

In view of the data stability problem affected by the pressure curve going upward first and downward later by using the pressure-reducing method,the mathematical model and theoretical chart of boost pressure method are established,and the importance of booster pressure method to stabilize the test curve and prolong the test cycle is described. Through the classification and statistics of field test data obtained by boosting method or pressure-reducing method in different oil blocks,the main factors influencing the effect of pressure-reducing method are given combining with oil field geological characteristics and water absorption characteristics,and the priority of the different influencing factors is determined. The field data analysis show that boosting method has obvious advantages in analyzing interlayer water absorbing capacity and extending the stable measurement period.