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分析了大庆主力油田三次加密井固井的难点 ,提出了低渗高压层、套损及套损后注水之间的关系以及气层、泡沫驱油等对固井质量的影响。讨论了在不同地层压力条件下应采取的固井工艺技术 ,为大规模三次加密钻井、完井做了必要的技术准备。
The difficulties of cementing in the three infill wells in Daqing main oilfield are analyzed. The relationship between the permeability of low permeability and high pressure layer, casing damage and water injection after casing damage and the influence of gas layer and foam flooding on the cementing quality are put forward. The cementing technology to be taken under different formation pressure conditions is discussed. The necessary technical preparations are made for large-scale three-time encrypted drilling and completion.