“Small Operator in the Anadarko Basin:  Highlights from the Cleveland play in Dewey County and the “Cherokee” Shale play in Ellis County”

with Tiffany M. Stephens and Bryan Hunt, Duncan Oil Properties, Inc

Duncan Oil Properties, Inc. is a small operator in the Anadarko Basin.  They have been in the business over 80 years and have become a major player in the Cleveland Tight Sand Horizontal Play and the “Cherokee” Shale Play.  Duncan was an early mover in the switch to horizontal drilling.  They also moved to cased-hole slick water fracs early (beginning in 2015) and greatly improved their production EUR’s on infill horizontals in the Cleveland, (some child wells being 5 times the EUR of the parent well).  This improvement in completion techniques to a slick water cased-hole frac has carried over to other plays, including the newly established “Cherokee” Shale Play.  This play was revealed by Mewbourne in Ellis County, OK, and all operators in this play have used a cased-hole slick water frac.

Since the start of Mewbourne’s shale play, Duncan has spent time researching vertical cuttings, core data, production data from the major operators, mudlogs, and other geological data.  They have mapped Ellis County with different techniques, performed Delta Log R (Passey Method) calculations, and also looked at pressure and maturity data.  While this play is still being actively drilled and evaluated, Duncan will share the history of the play and what they’ve learned so far in Ellis County, OK.  They will also share the results of their two “Cherokee” shale horizontals drilled under Cleveland/Marmaton wells in Ellis County, and their drilling issues and successes.

Biographies:

Mrs. Stephens has a J.D. in Law as well as her B.S. and M.S. in Geology from the University of Oklahoma.  She was certified with the Oklahoma Bar Association and has over 19 years of experience in the oil and gas industry.  She co-authored 3 publications before completing her thesis in paleontology. Work experience includes research with the Sam Noble Museum of Natural History; management of the Oklahoma lease process and title work for Vernon L. Smith and Associates; and geological and legal work in the energy industry for Pioneer Natural Resources, Inc, Chaparral Energy, L.L.C., Arnold Oil Properties, L.L.C., Black Crown Energy, L.L.C., and Duncan Oil Properties, Inc., where she is currently the Exploration Manager.  Her work has focused primarily in the Anadarko Basin and Shelf.  She has worked the Cana Woodford, STACK, Cleveland, Marmaton, Red Fork, Granite Wash, Hunton, and the new “Cherokee” shale play, to name a few.

Bryan Hunt is a Sr. Geologist for Duncan Oil Properties working both operations and exploration across the Anadarko Basin.  He has 10+ years of experience in petroleum geology.  He holds Geology degrees from Brigham Young University and The University of Alabama and an MBA from The University of Oklahoma.