He'd been drilling vertical Wells in the Permian since 1979 with only modest success.

他在1979年就已经在二叠盆地钻探直井，但是只取得了少许成功。

youdao

You use foreleg pick on the wall, and he placed trumpets vertical Wells, I jumped from your back well, again pull you up, we were saved.

你用前脚扒在井墙上，再把角竖直了，我从你后背跳上井去，再拉你上来，我们就都得救了。

youdao

Because of deflection and unsymmetrical space around in horizontal and deviated Wells, downhole flow status is much different from vertical Wells.

水平井、斜井由于井身倾斜以及井筒周围空间的非对称性使井下流动状态与垂直井极不相同。

youdao

The method is more costly, but also may produce 2.5 to 7 times the reserves of vertical wells, according to some experts.

FORBES

The study recommended a minimum vertical separation distance between fracking wells and water supplies of 600m (2, 000ft).

BBC: Fracking: Untangling fact from fiction

Fracked wells have been known to gush at 100 times the initial rate of an average vertical well.

FORBES: Will Natural Gas Stay Cheap Enough To Replace Coal And Lower US Carbon Emissions