Well drilling and stimulation

An optimized microbial control treatment program requires a strategy to address each of the three phases: preparing the water, decontaminating the well, and protecting the reservoir.

LANXESS recommends biocides based on the conditions of each phase, considering temperature, salinity, aerobic and anaerobic conditions, and the desired duration of control. Each application is different and requires a tailored program to meet the needs of the specific system.

Native downhole populations and microorganisms introduced during water injection leave wells contaminated with bacteria that survive and thrive in subsurface conditions. Inclusion of an effective biocide in drilling and stimulation fluids will provide initial control downhole. Throughout water injection, it is critical to control microbial growth in the reservoir environment. Biocides that remain effective under elevated temperature, pressure and salinity conditions for longer durations of time are necessary to help prevent souring, corrosion of assets and formation of in situ biofilm over time.

Some of our products are listed below. Not all products are available for sale or registered/approved for use in all countries.
Contact your sales representative or refer to our Contact Form to learn about product availability and approvals in your country.

 

Product Name Active Ingredient Benefits and Features
AQUCAR™ GA 25 Water Treatment Microbiocide

AQUCAR™ GA 50 Water Treatment Microbiocide

Glutaraldehyde
  • Rapid control with some preservative properties
  • Rapid decontamination of the downhole environment
  • Moderate high-temperature stability and prolonged downhole protection
  • Highly compatible with well stimulation fluid additives
  • Rapid microbial control following drilling fluid preparation
  • Moderate preservation and high-temperature performance
AQUCAR™ 714 Water Treatment Microbiocide

AQUCAR™ 742 Water Treatment Microbiocide

Glutaraldehyde + ADBAC
  • Synergistic blends of glutaraldehyde and ADBAC quat
  • Enhanced rapid control and biofilm penetration properties
AQUCAR™ DB 20 Water Treatment Microbiocide

DBNPA
  • Rapidly controls microbes for preparation of top-side water sources
  • Non-corrosive at end-use concentrations
  • Compatible with pumping, piping and storage equipment
  • Extremely rapid microbial control following drilling fluid preparation
  • Prevents loss of drilling fluid physical properties due to microbial degradation
  • Eliminates transfer of microbes from the top-side to downhole environment
  • Highly effective when used with a preservative chemistry
AQUCAR™ TN 25 Water Treatment Microbiocide

THNM
  • Ability to maintain efficacy at high temperatures, pressure and salinity for downhole protection
  • Provides slow, sustained kill
  • Long-term protection of drilling fluids maintained in storage pits or tanks

AQUCAR™ A 20 Water Treatment Microbiocide

AQUCAR™ A 78 Water Treatment Microbiocide

DMO
  • Ability to maintain efficacy at high temperatures, pressure and salinity for downhole protection
  • Provides slow, sustained kill
  • Long-term protection of drilling fluids maintained in storage pits or tanks

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