The Stewart Field, located in Finney County, Kansas, continues to respond to water injection. Oil production has increased from less than 300 BOPD to approximately 1,250 BOPD since water injection began, as illustrated in the plot.
Water supply is from the Topeka formation.
The injection rate was increased to 5,600 BWPD in February, 1996. Both supply and produced water are being injected. Cumulative water injection is 1,960,521 as of December 1, 1996. The field is being waterflooded using a modified six line drive pattern. The waterflood is equipped with a computerized monitoring system which includes an emergency shutdown and call out system.