爆燃酸化复合工艺技术在油田注水井的应用

The Application of the Deflagrate-acidification Complex Technology in Oilfield Injection Well

在注水井中采用爆燃酸化复合工艺以增加酸液的有效穿透深度。爆燃压裂和酸化侵蚀作用相结合能够排除射孔井段在钻井、固井时因泥浆、细菌及其他杂质侵入而造成的堵塞,提高注水量。叙述了该工艺的施工方法、适用范围及现场应用情况。该工艺在长庆、河南等油田的试验中均获得了较好的增注效果。

A deflagration-acidification complex technology is used in injection well to increase the effective penetration depth of acidification liquid. The combination of the deflagration-fracturing effect and the acidification-eroding effect can eliminate channel jam caused by invaded mud, bacteria and other impurities in the perforated intervals during the well drilling and completing process so as to increase water injection rate. The operation method, usable range and field application of the technology are described. The injection stimulation effect of the technology experimented in Changqing and Henan oilfield is rather good.