Leasing while production has started

we have been attempting to get a lease for a little time. Oil and gas has been producing in our section for six months. The oil company stated we must remain as unclaimed mineral owners since production has begun.

Is this true? we would rather be in a lease.

Thank you

You did not mention a state or county or location. That would be more helpful as the law differs by state.

it is located in Reeves in Texas

If you post your question in Reeves County, TX, then the folks there can explain the reasoning behind it. See the NEW TOPIC button at the upper right.