大港油田保护储层暂堵剂优化设计新方法

A NEW OPTIMIZATION DESIGN METHOD FOR RESERVOIR-PROTECTING TEMPORARY PLUGGING AGENT USED IN DAGANG OILFIELD

南部滩海地区是大港油田的重点勘探区域之一,经分析该地区储层为高孔、中高渗地层,储集性能优良,如果不进行有效的保护,很容易引起储层伤害。为此,针对大港油田南部滩海地区的储层特性,开展了储层保护技术研究。采用一种理想的充填新方法,对保护储层的钻井液暂堵方案进行了优化设计。实验结果表明,采用新方法能够提高储层岩心的渗透率恢复值,取得了较好的储层保护效果,作为一项储层保护的新技术,具有推广应用的价值。

The south beach is one of the main exploration aren.s in the Dagang oilfield.Reservoirs there are characterized by high porosity and medium/high permeability,but of good storage capacity,so it is necessary to take effective measures to protect them.Based on the formation features there,this paper conducted research on reservoir protection technology.This study introduced a new ideal packing method to optimize the temporary plugging of drilling fluids.The experimental results indicate that this new method can obviously increase the recovered permeability of core samples and obtain better effects for reservoir protection,and so is encouraged to be widely used.