Control treatments are an important component of this field project. They will help establish baseline data to differentiate between the treating methodology alone without MEOR treatment fluid and treatments made with MEOR fluid. Ram has asked the co-operating oil producers to conduct control treatments on a cross-section of candidate wells selected for this project. Control treatments do not have to be run on every well involved in the field trials. Control treatments will not be run on the microbial enhanced waterflood leases.
Control treatments should be conducted one (1) month before actual MEOR treatments begin to enable 20 to 30 days of post-production data to be gathered before the actual MEOR treatments begin.
To run a control treatment, follow the typical treatment methodology shown below, but do not use any MEOR treatment fluid. Control treatments can be run on multiple well leases provided the production from each well on the lease can be gauged independently and accurately.
CONTROL TREATMENT METHODOLOGY
A typical MEOR treatment method follows this general outline. Control treatments will follow this general treatment method, but without using MEOR treatment fluid.
1) pump the well off to lower well-bore fluids below the oil producing zone(s)
2) inject 20-25 gallons of #2 diesel (off road diesel) or kerosene (which ever is cheaper) into the annulus
3) inject 25 gallons of MEOR fluid into the well annulus <controls do not inject MEOR fluid>
4) flush with 2-4 barrels lease water (amount varies with depth of well)
5) shut well in for a minimum 12 hours
NOTE: Longer shut-in times are acceptable. Pumpers have shut wells in from several
days to a week or longer after treatment. Flush production recovers oil lost during
a longer shut-in.
6) circulate well bore fluids for 1-2 hours with well shut-in before turning back into production
7) turn well back into production
8) monitor production of oil, water, and gas (if applicable) on a regular basis
9) repeat MEOR treatments three times at 30 day intervals
10) gather post-treatment data on a daily or weekly basis