Study on improving the performance of water-based drilling fluid with nanofluid and polymer composite materials
The effects of different types(zinc oxide,titanium dioxide,multi walled carbon nanotubes,functionalized multi walled carbon nanotubes)and different mass fractions(0.002 8%,0.014 3%,0.028%,and 0.143%)of nanofluids on the rheological and filtration properties of water-based drilling fluid are compared through experimental research,as well as the influence of polymer composite materials on their properties under high temperature and pressure.The experimental results show that the rheological properties and filtration performance of water-based drilling fluid increase with the increase of nanofluid concentration,among which functionalized multi walled carbon nanotubes(F-MWCNTs)nanofluids have the best performance parameters for improving water-based drilling fluid performance.At the same time,under high temperature and pressure,polymer(ACN-co-VP)/zeolite composite materials can significantly improve the rheological properties of nanofluid water-based drilling fluid,such as increasing plastic viscosity,yield point and filtrate volume,improving the thermal stability of nanofluid water-based drilling fluid and drilling efficiency,and reducing the degree of formation damage.
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维普
