特种材料在港5-57K井钻井过程堵漏应用  

LOSS CIRCULATION CONTROL WITH PARTICULAR MATERIAL DURING DRILLING IN GANG5-57K WELL

作　　者：樊松林[1] 于永新[1] 安元华[1] 赵俊锋[1] 

机构地区：[1]大港油田集团公司钻井工艺研究院,天津300280

出　　处：《石油钻采工艺》2005年第B06期35-36,41,共3页Oil Drilling & Production Technology

摘　　要：港5-57K是港东油田1口侧钻井,井深1616 m。该井钻至1527~1537 m井段,发生严重漏失,漏失钻井液大于100 m3,加入复合堵漏材料近10 t,静置堵漏未成功。通过分析,推断出漏失原因主要有2点:一是长期采油出砂造成好的地层连通性,形成大孔道;二是井眼与断层连通形成类似“U”型管效应,造成漏失。因此,对钻井液进行了调整,利用50 kg特种材料配成堵漏液10 m3,挤入漏失层0.9 m3,封堵成功,24 h后建立循环,无任何漏失。试油日产油量达到25.13 t以上。现场应用证明,该堵漏液用量少,堵漏效果强,保护油气层效果好,可在低压漏失复杂井中应用。Gang5-57K well is a side-tracked well of Gangdong Oilfield.Loss circulation happened as drilling across 1527 to 1537m,and drilling fluid lost more 100 m^3.injected compound bridging material 10t,static sealing default.After analyze,considering that the reservoir has well connection,big narrow passage and formed 'U' shape with fault.Manufactured seal fluid 10 m^3 with 50kg particular material,injected 0.9m^3 seal fluid to leak layer, loss circulation control success.With little particular material can get well seal and protect effect to reservoir,it can be used to low pressure complex well.

关 键 词：低压油气藏 钻井液 堵漏 保护油层 特种材料 

分 类 号：TE256.6[石油与天然气工程—油气井工程]