The pressure loss in horizontalborehole may have certain influences on production performance of fractured horizontal wells.
水平井筒内的压力损失对压裂水平井的生产动态有一定的影响；
2
Real-time evaluating the stratum by the using LWD (Logging While Drilling) curve could ensure horizontalborehole extend effectively in the reservoir bed and improve rate of drilling.
利用LWD曲线实时评价地层，可以确保水平井井眼在储层中的有效延伸，提高钻遇率。
3
The horizontal lateral displacement of reinforced concrete or rail anti-slide piles is measured by setting up borehole incline-tube in pile.