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This report covers fiscal year 1991 research results for the Microbial Enhanced Oil Recovery (MEOR) and Wettability Research Program conducted by EG&G Idaho, Inc. at the Idaho National Engineering Laboratory (INEL) for the U.S. Department of Energy Idaho Field Office (DOE-lD). The program is funded by the Assistant Secretary of Fossil Energy, and managed by the DOE-lD and the Bartlesville Project Office (BPO). The objectives of this multi-year program are to develop MEOR systems for application to reservoirs containing medium to heavy crude oils and to design and implement an industry cost-shared field demonstration project of the developed technology. The program is inclusive of collaborative research efforts (established as subcontract agreements) in wettability with the New

The Moorcroft West Minnelusa Sand Unit is a confined reservoir that provides an ideal setting for evaluation of EOR technologies because there is minimal opportunity for off pattern operations to influence interpretation of results. The unit initially represented a marginal waterflood prospect with two wells (40 acre spacing) in the reservoir producing a total of 4 BOPD. Although unsupported by geological analysis, reservoir engineering. and fluid analysis suggested strongly that the two wells were producing from a common 805 ac-ft reservoir. Oil recovery and cash flow projections indicated that if the reservoir would respond to water injection, a polymer augmented process would markedly increase recovery. Design and installation of a multipurpose waterflood plant was staged to keep monetary investment and risk at a minimum until communication between the wells was demonstrated. In August, 1989, oil production increased from 3 to 6 BOPD demonstrating well communication. Thereafter, a skid-mounted water injection plant containing a dry solids feed system, liquid chemical storage and proportioning equipment, and a small triplex pump was installed. Polymer injection for volumetric sweep improvement was started in October 1989. An alkaline/polymer (A/P) process designed to reduce residual oil saturation was initiated in September 1991.

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of years and would 'not be told what to do', was not a bar to his arguing that he was an employee when seeking an unfair dismissal remedy. 40