Development and Evaluation of a Temperature-Resistant Lubricant for Water-Based Drilling Fluid
With the decrease of shallow underground oil and gas reserves in China,oil and gas exploration gradually turns to deep layer,the downhole high temperature and high pressure,high friction torque and so on have put forward higher requirements for the lubricity of drilling fluid.In this paper,a high-efficiency,temperature-resistant and wear-resistant composite lubricant GWLUB-1 was prepared from long-chain fatty acids and low-molecular polyols,and its performance was evaluated.The evaluation results show that GWLUB-1 has excellent lubrication performance.When the amount of GWLUB-1 is 1%,the reduction rate of lubrication coefficient in fresh water and salt water base slurry is more than 90%and 80%,respectively.When the addition amount is 2%,the anti-wear performance of the base slurry is good,and the wear scar is less than 4 mm,and the anti-wear effect is remarkable.GWLUB-1 is resistant to temperature up to 180℃,environmentally friendly and non-toxic;it has good compatibility with drilling fluid system and good application prospect.
high frictionhigh temperaturedrilling fluidlubricantenvironmental protection
万方数据
维普
