Modicide 340 is a liquid biocide used in a drilling fluid to protect polymers and pay zone fluids and formations against bacteria.
The majority of polymer components breakdown due to bacterial fermentation.
Sulphate-reducing bacteria are found in anaerobic environment where they convert sulphur to sulphuric acid which can adversely effect the whole pay zone due to H2S contamination. A drilling fluid contains bacteria from various sources such as dirty make up water, organic materials etc.
Modicide 340 is an effective bactericide which eliminates both the water-borne aerobic bacteria and anaerobic sulphate reducing bacteria, protecting polymers against breakdown and pay zones against H2S contamination.
Modicide340 contains an active agent the BNPD (bromo-nitropropane-diol).
At recommended application rate of 1 litre Modicide 340 per 1m3 of drilling mud “time to kill” sulphate reducing bacteria is 3 hours and for aerobic bacteria is 48 hours.
Initial doses is 1 litre/1m3 of mud or equivalent to 0,01% BNPD
Treatment dose depends on flow line temperature as follows:
|– below 30°C:
||0,25 l/m3 every 5 days
|– temp. 30-40°C:
||0,25 l/m3 every 4 days
|– temp. 40-50°C:
||0,25 l/m3 every 3 days
|– temp. 50-60°C:
||0,25 l/m3 every 2 days
|– temp. 60-70°C:
||0,50 l/m3 every 2 days
|– above 70°C:
||0,50 l/m3 everyday
|Modicide 340 is packed in
||– 1000 litres containers
||– 50 kg drums