Sticking pipe has been being a complicated problem in drilling this area.
在这个地区打井，卡钻一直是个复杂问题。
In this area drilling, the most important problem is preventing blowout.
在这个地区打井，最重要的问题是防喷。
All these years we have been drilling in this area.
这几年我们一直在这个地区打井。
All these years we have been drilling in this area.
这几年我们一直在这个地区打井。
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