Changshuai Shi

2 Patents

• US119653892024

  Patching Construction Method Using a Hydraulic Variable-grade Expansion Tool for Blocking During Drilling

  SOUTHWEST PETROLEUM UNIVERSITY

  0 cites
• US118461382023

  Hydraulic Oscillation Tool with Variable Stage, Small Pressure Drop and Strong Impact Based on Radio Frequency Identification

  Southwest Petroleum University

  0 cites