PETE 2031 Chapter : Compressibility
Document Summary
Where p is the change in applied pressure. V is the change in volume due to change in applied pressure. V is the volume of the material c is the compressibility, whose units are 1/pressure, eg, 1/psi. V and v must have the same units, which will cancel. As an example, a ball of unknown material is. Pressure gauge placed in a pressure vessel, as shown: Initially, the pressure vessel is at atmospheric, and the ball has a radius of 10 cm (diameter = 20 cm). Increasing the pressure to 100 psi decreases the ball"s radius of 9 cm (diameter =18 cm). = 0. 00271(4188. 79) (50) = 567. 58 cm3 and the diameter would be 19. 05 cm. Of the three ordinary states of matter, gas is generally the most compressible. Apart from the effect of compaction on grain arrangement, rocks are also compressible. In general, rock compressibility and its effect on pore volume are relatively small.
