摘要
安塞油田属于特低渗油田，以往使用的物理解堵和化学解堵作用单一，存在一定的局限性，因此针对地层特性研发了水力射流复合解堵技术．这种技术先使用酸液的化学作用对地层进行初步解堵，再使用高压水力射流对地层进行二次处理．最终提高了解堵的深度和效果，在安塞油田取得了较好的应用效果，目前成为安塞油田解堵主体技术.
The physical and chemical deplugging used in extra-low permeability Ansai oilfield in the past had only a single effect of broken-down, with some limitations. So a composite deplugging with hydraulic jet technology has been developed in the light of the characteristics of the formations. The technology uses firstly the chemical action of acid liquid to deplug preliminarily the formations, then conduct the second treatment by using high pressure hydraulic jet. It ultimately improves the depth and effect of deblocking. Good results of application are achieved in Ansai oilfield. Now it is the main technology of deplugging in Ansai oilfield.
关键词
特低渗油田
高压水射流
复合解堵
extra-low permeability oilfield
high pressure water jet
composite deplugging
