根据中浅层油气藏重复压裂暂堵老缝压开新缝，以及压裂过程控制裂缝转向的需要，研制了一种新型的高效缝内暂堵剂，并通过实验评价了暂堵剂产生暂堵的机理，包括暂堵材料粒度、注入流量和浓度等对暂堵效果的影响；并对暂堵后裂缝延伸及压后返排对气井生产的影响进行了非线性有限元数值分析，研究表明该暂堵剂具有良好的暂堵效果，对气井无二次污染，并在重复压裂中对气层起到了很好的保护作用。

After a period of time of production, in some wells, the crude oil at the old crack has basically been taken out, but there's certain amount of recoverable reserves. In order to improve the efficiency of these wells, refracturing is required. Temporary plugging agent in refracturing plays a very important role; it is the key to the success of refracturing. In this article, a new kind of temporary plugging agent has been developed, we have done lots of laboratory testing researches about its performance and temporary plugging effect. And, nonlinear finite element numerical simulation analysis has been adopted for temporarily blocking crack and the impact of the wells. It is can be seen from the experiment and finite element analysis that the new temporary plugging agent has a good effect; it has no secondary pollution of wells. Temporary plugging agent can provide protection for wells, and it has a good prospect.