摘要
为了能更准确地预测堵剂在油藏中的封堵位置,提出了堵剂突破压力法。以铬冻胶为例,首先测定不同配方堵剂在不同渗透率条件下的突破压力,然后根据地层参数及油水井条件,绘制高渗透层的压降曲线。当堵剂的突破压力高于其在高渗透层中所承受的压差时,就能封堵住高渗透层,这一位置就是堵剂的封堵位置。应用突破压力法,不仅可以确定堵剂在地层中应放置的位置,还可以正确组合堵剂并计算堵剂的用量。
Breakthrough pressure method was presented in order to accurately determine the plugging position of water shutoff agent in oil reservoir. Breakthrough pressure of chromic gel with different ingredient was measured under various permeability. Pressure fall - off curve of the high- permeability formations can be drawn according to formation parameters and oil ＆ water well data. Water shutoff agent can blockup the high permeability formations when the breakthrough pressure of the agent is bigger than the pressure difference berne in the formations. So this was the plugging position. Applying the breakthrough pressure method can determine not only the plugging position of the agent in the formations, but also combine plugging agent correctly and calculate plugging agent volume.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2005年第4期73-75,i0008,共4页
Petroleum Geology and Recovery Efficiency
关键词
堵水
突破压力
压降曲线
铬冻胶
water shot - off, breakthrough pressure,pressure fall - off curve, chromic gel
作者简介
李道轩，男，高级工程师，1984年毕业于西南石油学院油藏工程专业，长期从事石油地质和开发工作。联系电话：（0546）8753132，通讯地址：（256504）山东省博兴县纯梁采油厂。
