Abstract:

A study was conducted on the drive mechanism of capillary pressure in oil and gas migration. The result
shows that capillary pressure is neither the driving force of the primarymigration of oil and gas, nor the driving force of
secondary migration of oil and gas. Capillary pressure plays little role in oil and gas migration, it only put a certain
assistance to the migration at the transfer stage of primarymigration to secondarymigration. Capillary pressure is not the
resistance of primarymigration and secondarymigration of oil and gas. However, capillary pressure takes a little part of
sealing at the transfer stage of secondary migration to tertiary migration, which is very important to the forming of
reservoirs.

Key words: 3D seismic survey , 3D seismic data processing , refraction static correction , bin equalization ;noise at tenuation , loess tableland