广谱暂堵技术在准中1区砂岩储层的应用研究

Application of Temporarily Blocking Technique in 1st District Sandstone Reservoir of Center Sungar

摘要:

根据准噶尔中部1区块三工河组储层特点，在充分考虑油藏孔喉非均质性的情况下，利用广谱屏蔽暂堵技术进行架桥粒子和填充粒子设计，通过室内实验，进行钻井完井液配方的优选。该技术在准噶尔中部1区块使用后效果明显，渗透恢复率达到95%以上，试验井表皮系数均为负值。

关键词:广谱屏蔽暂堵;储层保护;钻井液;准噶尔中部1区块

Abstract:

The frame grains and filling grains were designed by using temporary shield blocking techniques, taking account of heterogeneous apertures and following the reservoir features of Sangong Structure in 1st district of Sungar. The drilling fluid formula was optimized after indoor test. The techniques gained very good application results in 1st district of center Sungar. The permeation recovery rate reached over 95%. The surface ratio of test well all were negative.

Key words:wide range temporary shield blocking; reservoir protection; drilling fluid; 1st district of center Sungar