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波纹管堵漏技术在黄龙004-X1井的应用

Natural Gas Industry(2008)

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Abstract
四川盆地东部地区在下三叠统嘉陵江组五段以上地层,压力系数普遍较低,井漏频繁,溶洞、裂缝性井漏时有发生,堵漏难度大、成本高,有的井因此报废.黄龙004-X1井钻至井深2 313~2 316 m发生溶洞、裂缝性井漏失返,先后多次采用桥浆、水泥堵漏,均未取得明显效果.在该井开展了波纹管堵漏研究,采用清水强钻至井深2 340.37 m进行波纹管堵漏获得成功,安全顺利钻达固井井深,下套管彻底封隔了该漏失层段.为碳酸盐岩溶洞、裂缝性井漏的有效治理探索了一条新的技术途径.
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Key words
plugging with bellow pipe,lost circulation,Sichuan basin,east,Early triassic
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