Abstract In the drilling industry, demand for environmentally friendly additives with high thermal stability is increasing due to dual factors of environmental pressure and high-temperature oil layers. However, commonly used non-toxic biodegradable additives, such as etherified modified starch, cannot withstand temperatures higher than 150 °C. Additionally, natural polymers better obtained thro...

Polyalcohol is an environmentally friendly anti-collapse lubricant commonly used in water-based drilling fluids. It generally composed of the single polyether or polyol, but its lubricity and inhibition can’t satisfy application current fluid systems well. Consequently, laboratory has carried out research on compound polyalcohol. The samples are mixed with lauryl polyether, nonylphenol Tween 80...

A soft computing system used to optimize deep drilling operations under high-speed conditions in the manufacture of steel components is presented. The input data includes cutting parameters and axial cutting force obtained from the power consumption of the feed motor of the milling centres. Two different coolant strategies are tested: traditional working fluid and Minimum Quantity Lubrication (...

Polyacrylamide (PAM) is a biodegradable polymer with good lubricity in friction reduction. However, there insufficient guidance on the dosage of PAM and poor rheological information effects temperature pH. This study aimed to investigate characterization material analysis regarding concentration, pH, PAM. In characterization, has been shown offer hydrophilic surfaces. study, 1000 ppm was critic...