ANP, the Brazilian oil and gas industry regulator, would like Petrolbras to return approximately 100 mature and inactive oil fields so the regulator can put them back on the auction block, according to Business News Americas. The Brazilian oil and gas producing company holds production rights on about 150 fields and it wants to keep the inactive ones and bring them back as prices and technology allow. Petrobras produces about 1.8 million b/d of oil, and ANP claims the fields are too small for a company that size. The two organizations have been talking about the return of the fields for more than 2 years, and the hangup seems to lie in the amount of compensation Petrobras will get if it returns the fields to the state authorities.