介绍了利用液体射流原理的4项油田开发新技术——负压法地层解堵技术、不动管柱降压排酸技术、油井井口降压掺水技术、污水沉降罐底部负压排污泥技术——的原理、特点、适应范围、现场应用效果等；通过现场200多井(套)次证明，采用液体射流对地层解堵效果明显，不会对储层造成伤害；采用液体射流排残酸，排酸迅速、彻底；采用液体射流法在井口掺热水，可降低井口回压，改善油井工况，提高泵效；采用液体射流法排放污水沉降罐底部沉积污泥，能提高排泥效果，改善污水处理质量；液体射流新技术工艺简单，操作方便，成本低廉，在油田生产中具有较好的应用前景。

Fluid jet principle is used in many processes. This paper introduces four patented new technologies developed based on fluid jet principle for oil field development. They are the methods of removal of formation plug, spent-acid flow-back by pressure decrease on one-trip, wellhead adding water, and removal of sludge from settling tank. The applications in more than 200 wells (or sets) show that these fluid jet new technologies have great prospects in oilfield production with their simplicity of technological process, convenient operation and low cost. This-paper describes mainly the technical principles, field utilization results and features of them.