Duhig rule is followed in the majority of oil and gas jurisdictions. This rule was developed to deal with the problem of over-conveyance of fractional mineral interest by prioritizing granted mineral interest over the reserved mineral interest. Duhig rule is a rule of title interpretation. The rule is not accepted in all states and is commonly limited to conveyances by warranty deed. Alabama, Colorado, Louisiana, Oklahoma, Mississippi, North Dakota, Texas and Wyoming are the states that adopt the Duhig rule.