Study on Theechnology of Small-sized Casing Repairing in Thermal Recovery Wells
ZHAO Yong;Petroleum Engineering Service Center,Henan Oilfield Company , Sinopec;
with the increase of huff and puff rotation, the problem of casing damage in heavy oil thermal recovery well is prominent, which affects the utilization of reserves, resulting in the waste of resources, which has become an unfavorable factor restricting the stable production and efficient development of oil fields. The damage of casing characterized by serious damage degree and multiple damages. The existing technology such as casing subsidization and chemical plugging can not meet the needs of the repair and treatment of the casing damage well. Therefore, small-sized casing repairing and related supporting technology are developed, and the small-sized casing repairing technology to different damages is formed. The field application show that the small-sized casing repairing technology is simple with high success rate and long effective period, which effectively solves the repairing problem of the casing damage of the thermal recovery well.
【CateGory Index】： TE931.2