我国油田套管损坏的原因探讨  

DISCUSSION ON CAUSES OF CASING FAILURE IN OILFIELDS

作　　者：张光普 陈继明[1] 张效羽 董事尔[1] 李学忠[2] 刘积松[2] 孙建华[2] 孟令祥[2] 

机构地区：[1]西南石油学院 [2]中原石油勘探局

出　　处：《石油钻采工艺》1996年第5期7-12,105,共6页Oil Drilling & Production Technology

摘　　要：近年来，我国油田套管损坏速度呈直线上升趋势，有的井不足1年时间，有的井刚完井1个月套管就坏了，给原油生产带来重大损失。套管损坏，一是套管柱设计不合理，特别是在盐岩、泥（页）岩地层，设计载荷偏小；二是不合理的注水，加速了套管的损坏；三是套管柱强度设计本来就不富余，射孔给套管带来一定的损害，加速了套管损坏；四是套管的外腐蚀使套管穿孔造成内腐蚀，腐蚀使套管更易损坏；五是油层出砂、固井质量、套管缺陷等使套管损坏。造成套管损坏的因素很多，具体到每口井必然有一些主要因素，找到主要因素才好采取防范措施。Casing failure is increasing rapidly in recent years. Some wells,for instance, were found the casing damaged only a year or even a month after completion.It has caused great losses to oilfield's production. Those causes of casing failure are: 1. unreasonable design of casing string(especially in salt bed and mudstone (shale) formation); 2. unreasonable water injection; 3. casing Perforation; 4.corrosion; 5. sand problems, cementing quality and casing defect.

关 键 词：套管损坏 套管柱 设计 腐蚀 油田 油管 

分 类 号：TE931.202[石油与天然气工程—石油机械设备] TE985.6