Microbial control with a solid biocide

2K7 Bugstick / Slimstick

2K7 Bugstick (Slimstick) is a solid biocide that contains 84.5% active ingredient. It is a responsive, long term control biocide; the main mode of action is inhibition of thiol-containing enzymes causing cell leakage and eventual collapse. 2K7 has a high level of activity against all groups of bacteria including sulfate reducing bacteria (SRB). The efficacy of 2K7 is easily measured using ATP testing methods. Resistance or high level tolerance has not been observed with 2K7 even in facilities that have used the product for over 15 years. The 2K7 Bugstick has a unique feature in that it fits easily into tubing; it can be dropped down into the well. It is denser than oil and water and will fall to the lowest possible point within the equipment parameters; delivering the treatment to the source of the problem. This also is true for treating water bottoms in oil/fuel tanks. Another feature of the 2K7 Bugstick is that it contains a small percent of surfactant that aids in the clean-up of oil coated solids in the interface and this has the potential to improve oil recovery.

Properties

Appearance: White or yellowish, stick form
pH: 4-7 1% sol. @ 20°C / 68°F
Solubility in Water: 28% (m/v) @ 23°C / 73.4°F in fresh water
Odor: Odorless
Decomposition Temp: 140°C / 284°F
Packaging: 2K7 Bugstick is 118 gram stick (100 g active biocide) in a soluble package; 2K7 Slimstick is 39.3 gram stick (33 g active biocide) in a soluble package

2K7 Bugstick / Slimstick Features and Benefits

  • Responsive and persistent control
  • Broad spectrum, anti-bacterial activity
  • Non-ionic, compatible with most other chemistries, synergistic inhibition with select biocides
  • Stable in solid form and in solutions with pH 4 up to 3+ years @ temperatures below 40°C / 104°F
  • Effective in heavy brines and high iron
  • Effective with high suspended solids

2K7 Bugstick / Slimstick Recommended Uses

  • Oil/gas – wells, tanks, pipelines
  • Coiled Tubing, work-over fracturing and packer fluids
  • Water treatment, storage and recycle/reuse
  • Recirculating cooling towers
  • Metal working and pulp mill operators
  • See label for all registered applications for Canada and USA

OSP 2K7 Water Soluble Paks reduce bacterial load in coiled tubing fluid in the Eagle Ford

Background

Coiled tubing (CT) is used for a variety of operations in oil and gas wells, including mill out of bridge plugs after cemented liner plug-and-perf stimulation. With each trip in or out of the wellbore, the CT string incurs a certain amount of fatigue that can be estimated using simulation software based on the CT outside diameter (OD) and material grade. CT units are retired at 80% of predicted fatigue. CT manufacturers have increasing empirical evidence showing that CT units experience premature string failures (below 80% fatigue) in certain areas, such as the Eagle Ford, Haynesville formations and Permian basin in Texas, and the Horn River and Montney formations in northern British Columbia. These string failures manifest in the form of pinholes and parting of the pipe. If these failures occur above ground, safety risks are a major concern. If they occur downhole, as detected by a sudden drop in tubing weight, the project is delayed and the costs of fishing out the broken pipe is incurred as well as the loss of the CT unit for future operations.

Frequently Asked Questions

What are the long-term production benefits of treating with 2K7 biocide?

The usage of 2K7 biocide prevents bacterial contamination and growth, controlling issues that arise from their presence, including microbiologically influenced corrosion (MIC). 2K7 reduces the risk of failures, improves run time on pipe, prevents contamination of downhole equipment and controls formation damage.

Can microbes develop a resistance to 2K7 over time?

Very unlikely. While it has been proposed that microbes can develop resistances to organic biocides, this has not been seen with 2K7 applications nor is it likely based on application methods used within our industry.

Is 2K7 compatible with most chemistries?

Yes. 2K7 is non-ionic and therefore very compatible with most system components within the oil and gas industry.

Looking for more information about 2K7 Bugsticks/Slimsticks?

Ask an OSP Expert