摘要
利用弹性力学原理,建立了水力压裂力学模型,给出了起裂压力理论计算公式。从压裂后压裂液的滤失速度出发,推导出了压裂半径理论计算公式,提出了新的压裂工艺技术,给出了压裂参数。试验结果表明:压裂孔后平均抽采量较原始孔提高了33.14倍,平均浓度较原始孔提高了44.28%,说明压裂后的增透效果较为显著。
Based on the principle of elastic mechanics, the hydraulic fracturing mechanics model is established, and the formula of starting pressure theory is given. Based on the filtration rate of fracturing fluid after fracturing, the formula of fracturing radius is deduced, fracturing process technology is put forward, the fracturing parameters are. The results show that the average extraction rate of the fractured hole is 33.14 times higher than that of the original hole, and the average concentration is 44.28% higher than that of the original hole, indicating that the increase of fracturing is through the effect is more significant.
出处
《煤炭技术》
北大核心
2017年第11期154-156,共3页
Coal Technology
基金
国家科技重大专项(2016ZX05045001
2016ZX05067003)
关键词
地面水力压裂
井下瓦斯抽采
压裂半径
ground hydraulic fracturing
underground gas drainage
fracture radius
