Rosneft executives say their explorationdrilling will not stir up radiation.
俄罗斯石油负责人说，他们的勘探钻井不会激起辐射。
2
Halliburton Co. handled the rig's cementing work, a key component in stabilizing a well when explorationdrilling is finished but production hasn't started.
Halliburton Co .负责了钻井平台的固井工作，当勘探性开采完成而生产还没有开始的时候，固井是稳定油井的一个关键步骤。
3
The system can provide effective guidance for enhancing exactness of bit failure analysis, improving bit design and evaluation, and selecting proper bit for explorationdrilling.