三种强化射孔方法的比较

常规射孔完井最大的缺陷在于无法克服成孔时产生的压实损害，近几年开发出一些强化射孔的新方法在突破 射孔压实带方面取得了比较好的效果，复合射孔压裂技术、氮气正压射孔技术、超压酸处理－ＴＣＰ联作技术就是三种 典型的方法，它们共有的特点是将射孔工艺与近井筒处理工艺有机结合起来，在打开孔眼的同时即对产层进行改 造，有效提高了近井地带的导流能力。这三种强化射孔方法有许多相似之处，但在作用机理、工艺技术上存有一定差 异，施工效果也不尽相同。具体施工中应针对施工井的地质特点、井况优选出适宜的方法，并且处理好改造效果、经 济投入和对套管损害程度三者间的关系。

Comparison of Three Enhanced Perforation Methods

The most serious drawback of conventional perforation completion method is formation compaction damage caused by perforation operation. Several newly developed enhanced perforation methods, such as compound perforation fractur- ing, nitrogen overbalance perforating and over pressured acidizing-Tcp joint operation, integrate perforation technology with near wellbore treatment and perform formation treatment while penetrating the formation, thus can effectively enlarge near wellobore conductivity. These methods are different in respects of operation mechanism. technology and results though they have many similarities. Suitable methods should be selected in field application according to the geologic features of operating wells and well status. Balance between treatment effects, investment and casing damage should be properly evaluated.