A method to increase the production of oil from an oil reservoir is described. The method includes injecting a magnetic or magnetostrictive material through an oil well into the oil reservoir, vibrating the material with the aid of an alternating electric field and removing oil from the oil well....http://www.google.com.au/patents/US6499536?utm_source=gb-gplus-sharePatent US6499536 - Method to increase the oil production from an oil reservoir
