Dr. Abdollah Esmaeili

Abstract:

Faults play a significant dual role in oil and gas reservoirs. Faults cause the migration and mixing of oil from separate horizons in one field, and also cause secondary porosity in the rocks and the release of hydrocarbons from the system. Fault plays a fundamental role in the formation of oil traps indirectly. It may block and prevent the fluid in one  direction, as well as transfer and providing a permeable passage for the fluid in  another direction in oil and gas reservoirs. Different types of faults such as normal fault, reverse fault, straight fault, slip fault and thrust fault can cause the formation of oil trap. Identification the  faults  in hydrocarbon reservoirs are very important for  enhanced oil recovery and development of oil fields. Correct description and drawing of faults can facilitate development projects in the oil industry. In this paper, the role of geological faults in oil and gas reservoirs will be discussed.