Sidetrack inside casing is a very effective way to exploit the residual oil and gas with low cost.
套管内侧钻是低成本开发剩余油气的有效途径。
Positive displacement motor is widely used in sidetrack drilling inside casing because of its excellent dynamic characteristic.
由于螺杆钻具本身具有良好的动力特性,在套管内侧钻中得到广泛应用。
But in case it has to evacuate the area around the damaged well, which lies some 50 miles off the Louisiana coast, BP also placed a special plug inside the well's casing.
但是为了预防,必须从离路易斯安那海岸大约50英里的毁坏的油井附近区域撤离,BP也在油井盒里放置了一个特殊的塞子。
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