Pilot Scale CO₂ EOR Project in Upper Mississippian Formation at Wellington Field in Southern Kansas

Abstract

A DOE sponsored pilot-scale project has been funded in which 30,000 metric tons of CO₂ will be injected in the upper part of the Mississippian reservoir to verify CO₂ Enhanced Oil Recovery (EOR) potential at Berexco Wellington field in Sumner County, KS. Wellington Field represents a typical Mississippian reservoir with very well documented production/injection history, proven performance, pressure and temperature conditions, oil gravity, etc. Therefore, this field is ideal for a test pilot CO₂ EOR. The main objective of this work is to evaluate reservoir properties, perform history matching of reservoir production and water flood, predict reservoir response, evaluate possible risks, and to propose the best CO₂ EOR scenario for the Mississippian reservoir at Wellington Field. Another objective is to test the feasibility for the CO₂ EOR of the larger scale. Multicomponent 3D seismic (depth migrated and shear wave) interpretations are being incorporated with the log and core data to produce a detailed 3D geological model. Model incorporated 25 old Neutron density and resistivity logs, 16 complete suites of resistivity and porosity logs, and two new wells with a full set of modern logs. Core was collected from the KGS # 1–32 well. Water and oil properties data was also collected from a number of wells. The data from this model was upscaled to produce a CMG compositional model, which is used to predict the reservoir performance for the CO₂ flood, scheduled in May, 2015.

AAPG Datapages/Search and Discovery Article #90221 © 2015 Mid-Continent Section, Tulsa, Oklahoma, October 4-6, 2015