Pipefriction is the resistance to flow caused by the pipe. As a general principle, it is better to use the largest practical pipe size to avoid losses in pump performance.
The reservoir buried deep, and the pipefriction is large, whereas the treating pressure is limited, which induce the displacement couldn't be increased to the required value.
而储层较深，管路摩阻大，可能会受施工压力的限制而无法提高排量导致压裂施工失败。
3
Newton fluid's flowing in special pipe is analysed, it is gained that some factors affect the friction coefficient of flowing fluid in special pipe.