Question

what is hydrostatic pressure

Answer 1

in short

hydrostatic pressure is expected by a fluid equilibrium at a given point within the fluid due to the forse of gravity .

in brief

The hydrostatic pressure gradient is the rate of change in formation fluidpressure with depth. Fluid density is the controlling factor in the normalhydrostatic gradient. In the U.S. Rocky Mountains, a formation water gradientof 0.45 psi/ft is common. In the U.S. Gulf Coast, a gradient of 0.465 psi/ft is common.

Answer 2

Hydrostatic pressure is the pressure that is exerted by a fluid at equilibrium at a given point within the fluid, due to the force of gravity. Hydrostatic pressure increases in proportion to depth measured from the surface because of the increasing weight of fluid exerting downward force from above.

                                     OR

The pressure exerted by a fluid at equilibrium at a given point within the fluid, due to the force of gravity. Hydrostatic pressure increases in proportion to depth measured from the surface because of the increasing weight of fluid exerting downward force from above.