For researching crack initiation condition and water injection pressure needed, this paper built up a mechanics model of crack tip based on crisp fracture theory of compound crack.
为研究初始裂缝尖端起裂的条件和所需注水压力,依据断裂力学的复合型裂纹的脆性断裂理论,建立了裂缝尖端力学模型,给出了计算方法。
The result indicates that the initiation fracture pressure can be obviously reduced by raising the perforation diameter and depth;
计算结果发现,增加射孔直径、深度可以显著降低起裂压力;
The result indicates that the initiation fracture pressure can be obviously reduced by raising the perforation diameter and depth;
计算结果发现,增加射孔直径、深度可以显著降低起裂压力;
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