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孤岛油田和孤东油田为疏松砂岩油藏 ,已进入开发后期 ,油水井套管损坏严重。统计了两油田的套管损坏位置分布特点和损坏类型。并从注水、出砂、地层滑移、固井、采油及井下作业等方面分析了套管损坏机理 ,为采取防治措施提供了依据
Gudao Oilfield and Gudong Oilfield are loose sandstone reservoirs, which have entered the later stage of development. The casing of oil and water wells is seriously damaged. The distribution characteristics and damage types of casing damage in two oilfields were calculated. The casing damage mechanism was analyzed from the aspects of water injection, sand production, formation slip, cementing, oil production and downhole operation, which provided the basis for taking control measures