Synthetic method of anion sulfoacid gemini surfactant DTM
CN101261196A
A kind of high-temperature high pressure environment tensile load test method
CN101100361A
Low-temperature low-density well cementing cement mortar
CN101130947A
Construction is subjected to the die block cradle supporting method of the concrete work of tidewater restriction
CN101130980A
A kind of method of removing the bored pile construction obstacle
CN101104739A
A kind of rubber powder modified asphalt and working method thereof
CN101074603A
Simulation radially exist the experimental facilities of electric conductivity difference environment and logger radially depth sounding measure system
CN101054897A
Axial resolution determinator and mensuration system
CN101050695A
A kind of system that reclaims the barite in the weighted drilling fluid and get rid of useless solid phase
CN1975100A
Oil well intelligent anti-polluting device
CN1847366A
Method of eliminating naphthenic acid from crude oil or fraction oil
CN1743640A
Oil well electric pump separate-extraction intelligent joint