A study to review previous work, perform additional laboratory tests, and identify pay from well logs in the Teague-Blinebry field was performed at the New Mexico Petroleum Recovery Research Center (PRRC) a division of New Mexico Institute of Mining and Technology. Recovered core from one well and well logs from across the field were evaluated. Laboratory results included:

  1. Mineralogy, fracture systems, and oil stains were described for 251 ft of recovered core.

  2. Slabbed core scanning minipermeametry were performed on 79 samples, air permeabilities on both ends of twelve plugs, brine permeabilities on two samples, and water and carbon dioxide (CO2) floods on two samples.

  3. Minimum miscibility pressure was determined to be the higher of 1010 psig or the system bubble point pressure.

  4. Wettability index was determined to be ‒0.608.

Core permeability measurements identified very low matrix permeability in the Blinebry dolomite. Regions of conductive vugs and fractures were detected. Tests indicate that even apparently filled fractures play a significant role in fluid movement. This observation is supported by effective permeability results, derived from step rate tests, of 1.15 md; well above the average matrix permeability.

Density/neutron and induction or laterologs were used to identify pay in 16 wells with modern log suites. In order to include a greater number of wells, a procedure was adopted in which field average parameters were used with 47 sonic porosity logs from the older wells lacking density/neutron data. Net pay and original oil in place were calculated for 63 wells. Targets for potential water or CO2 flood development are identified as the upper one-third of the Blinebry.

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