新型耐高压钻孔密封方法试验研究

Experimental study of novel high pressure resistant borehole sealing method

针对高压水力压裂、高压注水等卸压增透措施中封孔困难的问题,在分析现有封孔方法不足的基础上,提出了一种耐高压钻孔密封方法。通过进行实验室模拟钻孔试验和现场工业性试验,得出新型耐高压钻孔密封方法具备很高的抗压强度和优异的封孔性能,可显著提高高压水力压裂、高压注水钻孔的封孔成功率,保证卸压增透措施的实施效果。

Aimed at the difficulty in the borehole sealing after the pressure relief and permeability enhancement by high pressure hydraulic fracturing and high pressure water injection, a high pressure resistant borehole sealing method was proposed. The experimental simulating drilling test and the industrial test both showed that this novel high pressure resistant borehole sealing method possesses high compressive strength and great sealing effect, enhancing the success of borehole sealing during high pressure hydraulic fracturing and high pressure water injection and ensuring the pressure relief and permeability enhancement.