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通过地面模拟试验研究和现场施工对比分析验证，找出双层套管固井质量控制规律和评价方法。从而解决了φ139．7mm套管内下φ101．6mm套管固井质量控制与评价的难题，对新开发井局部双层组合套管固井和老井悬挂小套管完井质量控制及评价，也具有借鉴指导作用。
Through the ground simulation test research and on-site construction comparative analysis and verification, find the double-layer casing cementing quality control rules and evaluation methods. Thus solving the problem of φ101.6mm casing cementing quality control and evaluation under the φ139.7mm casing. The quality control and evaluation of the well casing of the newly developed wells with double casing casing and the old casing suspension casing are also completed With reference guidance.