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《Equipment for Geophysical Prospecting》 2007-03
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Modification to 305-type mountainous rig

Yang Fengshen,Liu Kun and Hou Zunqing  
The modification to mountainous rig presented in the paper means using less costs to raise the drilling ability of rig from 30m to 50m on the basis of original type-305 mountainous rig.Through upgrade and reformation,a lot of old rigs can be suitable for the current exploration demand of 50m drilling depth,which fully taps the potential of oil equipments in company and reduce a lot of the costs buying new mountainous rig with 50m drilling capacity,reducing depreciation charge of exploration equipments in crew.The many tests in field showed that the technical property and various parameters of reformed rig reached the designed object,and the specimen of rig totally meets the need of construction in mountainous exploration that the well depth is 50m after usage by seismic crew 247 of Tarim Department of Management in a construction time.
【CateGory Index】: P634.31
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