实体筛管完井技术在氮气钻井中的应用

针对气体钻井完井方式单一、完井程序复杂、采用套管阀或非透式可膨胀筛管完井技术成本高、可靠性差等问题，自主研发了利用暂堵剂密封筛管的实体筛管完井技术。该技术先将筛管用暂堵剂密封为盲管后对其进行割缝或打孔处理，然后利用成熟的下尾管完井技术入井后钻掉暂堵剂，最终实现储层与筛管连通。该技术在三塘湖油田牛气1井氮气钻井中得到了成功应用，完钻后日产气量2.5×104 m3，为邻井的6倍以上，实现了低成本、零污染、安全顺利下入筛管的全过程氮气钻完井技术，为降低氮气钻井筛管完井成本提供了一条有效的途径。

Application of stuffed screen pipe completion technology in N2 drilled wells

In view of the unique and complicated completion method for gas drilling, and high cost and low reliability of DDV and leakless inflatable screen pipe, the stuffed screen pipe with temporary plugging agent was developed autonomously. With this technology, the screen pipe was plugged with temporary plugging agent to be blank tubing in advance, and then slot or perforate holes on the pipe. After running the screen pipe downhole, the temporary plugging agent will be drilled, and then the formation will communicate with screen pipe. This technology was successfully used in the N_2 drilled well which is Niuqi-1 Well in Santanghu Oil Field, the daily production rate after completion was 2.5×10~4 m~3 which is 6 times more than offset wells. The low cost, low pollution and safer screen pipe designing method is an effective means for N_2 drilled wells completion.