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The service life of screw pump stator rubber material analysis and research
Abstract:
Screw pump oil production as a kind of widely used in the production of high yield of heavy oil well drilling machine, existing (years of history. 
Drilling fluid properties and the borehole wall stability of DPT
Abstract:
Although the current domestic drilling fluid technology level can meet the requirements of drilling operation, but still need to constantly improve and improve, through technology progress make the drilling fluid technology to a new level. 
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