摘要
高压或常压极低渗透层压力曲线特征表现为流动平缓 ,压力恢复缓慢 ,实践已证实具有此类曲线特征的地层增产措施无效。但近年来 ,胜利油田连续出现多口具有此类曲线特征的地层经压裂或酸化获得增产的好效果。从试井理论基础入手 ,认真分析了出现这类特殊测试曲线形态及其措施有效的原因 ,并以实例加以说明 ,对今后该类曲线的认识有一定的指导意义。
The pressure curves acquired in tight formation with high or normal pressure usually showed a flat flow and slow buildup characteristic. It has been proved in practice that the stimulation treatments adopted in these well are invalid. But in recent years, many wells of this kind in Shenli oilfield achieved a good productivity improvement after hydraulic fractured or acid stimulation were taken. Starting with basic well test theory, the reasons why this special type test curve could occur and why the stimulation treatments could take effect were discussed in detail, and a field example was also presented to illustrate it. This paper provides a guideline that is useful to analyze this type test curve in future.
出处
《油气井测试》
2002年第2期16-18,共3页
Well Testing
