In the survey project in Yewu depression salt mine, it was required to core at the depth of more than 2000m under the ground surface. According to the requirement of the project book, small diameter core drilling and large diameter petroleum drilling and hydrological well drilling technologies were adopted. With the collection of the advantages of several types of equipment and tool by the new technology of combination of petroleum drilling and wire-line coring , the construction was effectively completed with low cost. The paper introduces the match of equipments and tools for large diameter deep drilling in salt mine, which can be the reference to the similar projects.