West Carney field--one of the newest fields discovered in Oklahoma--exhibits many unique production characteristics. These characteristics include: (1) decreasing water-oil ratio; (2) decreasing gas-oil ratio followed by an increase; (3) poor prediction capability of the reserves based on the log data; and (4) low geological connectivity but high hydrodynamic connectivity. The purpose of this investigation is to understand the principal mechanisms affecting the production, and propose methods by which we can extend the phenomenon to other fields with similar characteristics. In our experimental investigation section, we present the data on methane injection using huff-n-puff process. It appears that additional oil can be recovered using methane as a solvent. Additional experiments will be needed to confirm our analysis. Our engineering analysis has laid out detailed indicators to make the de-watering successful. Using those indicators, we are currently investigating potential in fill well locations in West Carney field. Our technology transfer activities continued this quarter with two presentations and one workshop.

West Carney Field produces from Hunton Formation. All the wells produce oil, water and gas. The main objective of this study is to understand the unique behavior observed in the field. This behavior includes: (1) Decrease in WOR over time; (2) Decrease in GOR at initial stages; (3) High decline rates of oil and gas; and (4) strong hydrodynamic connectivity between wells. This report specifically addresses two issues relevant to our understanding of the West Carney reservoir. By using core and log data as well as fluorescence information, we demonstrate that our hypothesis of how the reservoir is formed is consistent with these observations. Namely, oil migrated in water wet reservoir, over time, oil changed the wettability of some part of the reservoir, oil eventually leaked to upper formations prompting re-introduction of water into reservoir. Because of change in wettability, different pore size distributions responded differently to water influx. This hypothesis is consistent with fluorescence and porosity data, as we explain it in this quarterly report. The second issue deals with how to best calculate connected oil volume in the reservoir. The log data does not necessarily provide us with relevant information regarding oil in place. However, we have developed …

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Tupelo's town hall has been a gas station and housed the jail."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Clarita Fire Dept."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ruby Branom, Freddie Brice and Devalson wheeler inspect the interior of the old Merchants National Bank building in Lehigh"

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Amish farmer Melvin Troyer draws more than a few curious looks when he takes his wagon out for a ride along State Highway 48 near Clarita in southeastern Oklahoma."

Photograph of dozer disking & pulling railroad iron preparing land on bottomland owned by Harvey Woods. Leon Riley is operating dozer.

Photograph used for a story in the Oklahoma Times newspaper. Caption: "This is one of the downtown buildings in Coalgate being utilized for the college's two-phase classwork."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "It has to fit just about right."

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Weekly newspaper from Coalgate, Oklahoma that includes local, state, and national news along with advertising.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Gardner Pate, owner and publisher of the Coalgate Record-Register, weekly paper in Coal County."