| 초록 |
Drilling mud is fluid used in drilling system, which conducts controlling subsurface pressures, removing drill cuttings, and cooling the drill bit, so it is required high thermal conductivity, high viscosity and stability in high pressure and high temperature (HPHT). Drilling mud, especially for water-based drilling mud (WBM), needs additives which are used to enhance the properties of WBM. However, previous WBM additives have some limitation to increase thermal conductivity of the mud after HPHT treatment. The MoS2 showed high thermal conductivity (single layer 34W/m·K, bilayer 54W/m·K) and stability in HPHT. Notably, MoS2 nanosheets' thermal conductivity can be tuned by controlling the thickness and size. In this study, we demonstrated that these characteristics effectively changed the properties WBM. MoS2 nanosheets with different size and thickness were used in WBM. |
