(817)447-8056 USES: A Dense Hydrocarbon Activity (DHA) map outlines the three categories recommended for drilling as shown in the example to the right: The blue box indicates an ‘A Prime’ location with a 90% probability. The green box indicates an ‘A Plus’ location with a 75% probability. The yellow box indicates an ‘AB location with a 50% probability. Uses 2. Field Extension: Shows highest quality of Dense Hydrocarbon Activity that has been missed. 1. Water Floods: Shows where the oil is accumulating after flooding. 3. WildCats: High quality RAD Mapped DHA is indicator of good accumulation of oil or gas at some depth.