Preparation and research of intelligent drilling fluid based on temperature-sensitive modified bentonite

The application of intelligent materials in drilling fluids has greatly reduced the investment human resources and effectively made up for shortcomings traditional fluids, such as insufficient directivity, poor adaptive ability difficult monitoring. Therefore, research is a valuable direction future oil gas industry. In this study, temperature-sensitive modified bentonite NIPAM-B developed by Pan Yi et al. was used fluid base slurry, additives were optimized to complete modulation inspection system. addition, rheology, filtration, shale wellbore stability system will be evaluated. results show that good thickening performance, rheology not affected temperature changes, which can realize heating thickening. compared with original system, loss reduction borehole wall protection ability, rolling recovery rate reaches more than 95 %.