塔中26-H3井复杂处理及分析

Complex Treatment and Analysis of Well 26-H3 in Tazhong

塔中26-H3井是四勘70565队承钻的新疆且末县境内塔中区块的一口水平开发井。于2010年04月25日12 1/4″的钻头一开1 199.00m完钻,95/8″套管下至井深1 199.00m;二开81/2″HAT517G钻头钻至H:4 553.00m发生严重井漏失返,打水泥塞在H:1 360.0m侧钻,二开H:4 630.0m完钻,采用正注反挤固井,7″套管下至4 627.30m;三开6″钻头开眼,精细控压定向至H:4 726.0m再次发生严重井漏失返,在长达21.54d的井漏溢流处理,经甲乙双方讨论协商,三开4 730.0m裸眼完钻,下步下封隔器封隔井眼,下完井油管完井。

The well 26-H3 in Tazhong is a horizontal development well in the Tazhong block in Qiemo County, Xinjiang, which was drilled by Si Kan 70565.On April 25, 2010, a 12 1/4″ bit was drilled at 1 199.00m, and 95/8″ casing was drilled to a depth of 1 199.00m ; two 81/2″ HAT517G drills were drilled to H ： 4553.00m.Lost return, hit the cement plug in the H ： 1 360.0m side drill, the second open H .. 4 630.0m finish drilling, using positive injection and reverse cementation, 7″casing down to 4 627.30m ; three open 6″ bit opening, free control of pressure Serious leakage of mudslides occurred again at H ： 4 726.0m.After a 21.15-day overflow overflow treatment, the two parties discussed and negotiated, and the open hole was drilled at 4 730.0m.The next step was to seal the weUbore with the oacker.Under completion of comlaletion of tubing.