ATTENTION TO DETAIL: HOW A BIG COMMITMENT TO RESERVOIR DESCRIPTION HAS MADE A MAJOR IMPACT ON DEVELOPMENT AT ELK HILLS OIL FIELD
Occidentals commitment to acquiring data and having enough staff to interpret this data and integrate the resultant information into individual reservoir descriptions has had significant impact on the results of development work at Elk Hills. Several examples can be shown. Elk Hills is a very complex oil field with 21 producible horizons in the Dry Gas Zone, 4 major reservoir sandstones in the Upper Shallow Oil Zone (SOZ), and 7 reservoir sandstones in the Lower Shallow Oil Zone. In addition, one of the Upper SOZ sandstones is divided into as many as 13 layers for reservoir management purposes. In the Miocene Stevens Zone, there are shale reservoirs associated with two major structures and 7 major sandstone reservoirs. Many of the development projects at Elk Hills have experienced significant breakthroughs in development proficiency due to improved reservoir description.