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Location: Sexsmith, AB
Field: Clair
Well Depth: 800 meter average
Problems: Paraffin
Formation: Doe creek
Number of Wells: 29
Historical Problems and Remedies Prior to Treatment:
Casing and tubing would constantly plug up due to excessively high paraffin dropout. Flow line would also plug up and had to be pigged 2 to 3 times per week. Pads were in the treater. Well heads had to be steamed every month. Sales line was hot oiled every 3 months. They couldn’t take accurate fluid shots. Injection wells would pressure up and lose flow into formation. A chemical treatment program combined with condy flushing was proving ineffective.
Observed Results of Microbial Treatments:
Well heads are no longer waxing up. Flow lines are pigged once per week now. There are hardly any pads in the treater. No more steaming of well heads. No trouble with the sales line. They can get accurate fluid shots. Injection wells range from a 2m3 to 100m3 flow rate. Recently did first turnaround in 2 years, pulled the treater apart to find it completely clean. They took the hatch off the sales tank (2000 bbl) and it was totally clean. Their paraffin treatment budget as been cut in half. Peace Pipe Line has claimed this field to have had the greatest paraffin problem in the Peace Country. The microbial treatment program has significantly cleaned it up.
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Location: S.E. Saskatchewan
Field: Workman
Well Depth: 1300 meters
Problems: Some paraffin, some iron sulphides
Formation: Frobisher
Number of Wells: 1
Historical Problems and Remedies Prior to Treatment:
35-year-old well, production had decreased over the years due to formation plugging.
Average Production before Treatment:
BOPD 19.5 Oil cut 13%
Observed Results of Microbial Treatments:
Work was done on the pumping unit the same time Microbial Treatments started. Well was treated for three months, with an increase in production noted. Treatment suspended for 4 months, decreased in production to what it was prior to treatment. Treatments started again after 4 months.
Average Production after Microbial Treatment:
BOPD: 26 Oil cut 13% BWPD 15
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Location: S.E. Saskatchewan
Field: Steelman
Well Depth: 1445.4 meters
Problems: paraffin
Formation: Midale
Number of Wells: 1
Historical Problems and Remedies Prior to Treatment:
Paraffin buildup would wax the well off. Hot oiling required every 6-8 weeks.
Average Production before Treatment:
BOPD: 23.9 Oil Cut 79%
Observed Results of Microbial Treatments:
We have gone 10 months without hot oiling and with no wax hang-ups. No chemicals were being used.
Average Production after Microbial Treatment:
BOPD: 24.5 Oil cut 87%
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Location: S.E. Saskatchewan
Field: Steelman
Well Depth: 1450 meters
Problems: Asphaltines and paraffin
Formation: Midale
Number of Wells: 1
Historical Problems and Remedies Prior to Treatment:
High fluid levels due to asphaltene problems including paraffin deposits. Chemicals were used.
Average Production before Treatment:
BOPD: 8 Oil cut 13%
Observed Results of Microbial Treatments:
We saw that the well pumped off, and a drop in fluids was noticed. Total production increase was noted. Chemical use was eliminated.
Average Production after Microbial treatment:
BOPD: 11.2 Oil cut 13%
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Location: S.E. Saskatchewan
Field: Steelman
Well Depth: 1450- 1500 meters
Problems: Paraffin and Iron Sulfides
Formation: Midale
Number of Wells: 4
Historical Problems and Remedies Prior to Treatment:
Reduced inflows and high line pressures due to paraffin. Hot oiling, use of chemicals and regular pigging of lines were observed.
Average Production before Treatment:
BOPD: 5-6
Observed Results of Microbial Treatments:
Wells had an increase in inflows, and a decrease in water cuts. Line pressures dropped off, less pigging of flow lines needed to keep pressures down. Reduced heat in the treaters needed for breakout. Hot oiling and chemicals eliminated.
Average Production after Microbial Treatment:
BOPD 6-6
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Location: Wyoming, USA
Storage Tank: 1,000 BBL
Problems: Thick oil sludge
Desire: Oil recovery
Number of Wells: 4
Historical Problems and Remedies Prior to Treatment:
Heavy asphaltines based oil with our point at 70 and 14 API gravity. Oil had been sitting for 10 years.
Observed Results of Microbial Treatments:
Only treatment that has worked successfully. Oil was recovered and tanks were cleaned.
Average Time for Microbial Treatment:
2 to 3 days
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Location: Canada
Storage Tank: 400 BBL
Problems: Pumping Problems due to Oil Sludge
Desire: Oil recovery
Number of Wells: 2
Historical Problems and Remedies Prior to Treatment:
Heavy accumulation of burned oil with 0 pours point at the bottom of tank. Burned oil build up could not be recovered by any method. Diesel and chemical treatments were used with no effective results.
Observed Results of Microbial Treatments:
50, 000 BBL of oil produced and increased sales of oil to the pipeline. Reduction in propane quantities used. All recovered oil was sold.
Average Time for Microbial Treatment:
3 to 5 days
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Location: Campbell County, Wyoming
Oil Field: Barber Creek Field
Problems: Non-gas-producing wells
Desire: Produce commercial grade methane
Number of Wells: 3
Historical Problems and Remedies Prior to Treatment:
Field was in the process of being shut down due to lack of production.
Observed Results of Microbial Treatments:
Produced commercial grade quality methane at increased rates
Average Time for Microbial Treatment:
30 days
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Location: Colorado, USA
Field: Spindle
Well Depth: 500-5500
Problems: Paraffin & Scale ( CaCO3 )
Formation: Shannon/ Sussex
Number of Wells: 13
Historical Problems and Remedies Prior to Treatment:
Every 60 days the wells had to be “hot oiled” down the tubing and flow lines. Decreased production was realized. Stripping was required. These wells had to be pulled every 12 to 18 months.
Average Production before Treatment:
BOPD 2-3 BWPD 1
Observed Results of Microbial Treatments:
Initial treatment was injected down tubing in September 1998. Since beginning treatment, no hot oiling or butane augmentation has been needed. Oil production has increased up to 50%.
Average Production after Microbial Treatment:
BOPD 4-5 BWPD 1-6
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Location: Colorado, USA
Well Depth: 8500
Problems: Paraffin
Formation: Parkman
Number of Wells: 5
Historical Problems and Remedies Prior to Treatment:
Paraffin was clogging flow lines. Solvents were used to dissolve paraffin but CaCo scale was produced.
Average Production before Treatment:
BOPD 8-15 BWPD 3-5
Observed Results of Microbial Treatments:
After 3 weeks of treatment the flow lines were clean. Production increased slightly but not significantly.
Average Production after Microbial Treatment:
BOPD 10-18 BWPD 3-8
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Location: Colorado, USA
Field: Spindle
Well Depth: 5000
Problems: Paraffin
Formation: Shannon/Sussex
Number of Wells: 5
Historical Problems and Remedies Prior to Treatment:
Paraffin buildup required stripping jobs as well as ‘hot oiling’. All wells had to be pulled every 12-18 months. CaCo scale problems existed.
Average Production before Treatment:
BOPD 3-5 BWPD 1
Observed Results of Microbial Treatments:
Wells were treated and the hot oiling was not necessary. The equipment cleaned up and a 10% increase in production was apparent.
Average Production after Microbial Treatment:
BOPD 3-5 BWPD 1
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Location: S.E. Saskatchewan
Field: Steelman
Well Depth: 1500 meters
Problems: Paraffin
Formation: Midale
Number of Wells: 1
Historical Problems and Remedies Prior to Treatment:
Low inflow with paraffin problems. Hot oiling and chemical injection were tried.
Average Production before Treatment:
BOPD: 5 Oil cut 57%
Observed Results of Microbial Treatments:
Significant production increase and drastic reduction of water production. Hot oiling and chemicals were eliminated.
Average Production after Microbial Treatment:
BOPD: 9.7 Oil cut 90%
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