Patents/Inventors

Feilong Cheng

ChengduCN1 patent

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