Definition - What does Fluid Density mean?
The fluid density of a liquid is determined by its consistency with respect to its state in temperature and pressure. The temperature and pressure play an important role individually in determining the density of a fluid. Therefore, oil based drilling fluids and water based drilling fluids have different densities.
Petropedia explains Fluid Density
Natural gas can be processed and transformed into a fluid form and LPG, i.e., Liquefied natural gas is its well-known example. The density of oil or water based drilling fluids tend to change in different pressures and temperatures beneath the surface of the earth. Therefore, it is important to figure out their initial densities and process them accordingly. This ensures that these fluids can manage well in the extreme environment found in the downhole.