The purpose of this paper is to allow drilling rig supervisors to evaluate mud/gas separators properly and to upgrade.

Combined with the flying bridge foundation construction example in the Shanjie highway,it represents the quality control measures to the effective driven cast-in-place pile construction on the soft foundation,and points out the mud segregator has good effect to the sand ratio control,which will supply reference to the similar projects.

Research on oil containing sludge separator was carried out to substitute the sludge separating pool and thickening pond in the conventional sludge treatment.