Earth stress is the basis of drilling engineering design and field development project design.
地应力是钻井工程设计和油气田开发方案设计的基础。
2
The scientific drilling is the only technique to obtain directly the geological information of the deep earth.
科学钻探是直接获得深部地质资料的技术手段。
3
Within the scope of protection of flood control works, exploding, drilling Wells, quarrying stones, collecting earth or other operations endangering the safety of flood control works are prohibited.