Very likely that the city tracts have been pooled under MIPA (Mineral Interest Pooling Act) after hearing at RRC. This is a way for oil companies to be able to drill in cities where there are very tiny lots. Otherwise one owner could hold up everyone else. You will be given specific choices in writing for the MIPA well. Even if MIPA did not apply and the other 1/2 owner leased, then the lot would be drilled. In that case you would be unleased mineral owner who comes into pay after the pay-out (well revenues exceed drilling and operating costs). Leasing will not hold up your house sale. If you post more information about your lot or neighborhood location, someone familiar with the oil companies and MIPA units in Midland can let you know more of what is going on.