Considering the adhesion sand supports the cement mantle and the casing shears the cement mantle together, this paper establishes a new model to calculate the adhesion sand casing well concretion strength.
考虑黏砂砂粒对水泥环支撑和套管对水泥环剪切共同作用,建立黏砂套管井固结强度计算新模型,得出当黏砂密度小于临界黏砂密度时,黏砂套管固结强度与黏砂密度呈线性关系;当黏砂密度达到临界黏砂密度时,黏砂套管的固结强度与黏胶剂的性能有关;当临界黏砂密度为70%时,实验结果与新模型的计算结果一致,最大相对误差9。
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