Prevent well souring and contamination by eliminating sulfate-reducing and acid-producing bacteria
Talk to an expertBacteria control in oil and gas operations can be difficult due to high temperatures and high salinity associated with the reservoir. Following a well treatment, untreated bacteria can result in microbial growth that can lead to well souring, iron sulfide formation, and corrosion. Each of these can threaten the production of your assets and lead to costly remedial operations or potentially, well abandonment.
Ineffective biocide programs, at the minimum, lead to increased costs via remedial treatments and at the worst, can lead to premature plug and abandonment of the asset. The Multi-Cide® service is a synergistic application that optimizes biocide treatments to prevent well souring and contamination. The service helps eliminate sulfate-reducing and acid-producing bacteria in these difficult conditions.
Multi-Cide Biocide Service
Cost-effective, high-performance biocide program
Current biocide long-term effectiveness
Conductor® fracturing and stimulation service
Integrity, application that optimizes biocide
Operators are continuously trying to find lower-cost methods for fracturing, one example being the sand that’s pumped. Sand that is locally mined and sent directly to the site without any wash treatment introduces potential contaminants into the well. This is where biocides come into play.
Typically, oxidizers are used. The drawback to this option is that it leads to incompatibility issues with the frac fluid and frac equipment. Other options, such as chlorine dioxide (ClO2), peracetic acid (PAA), and peroxide are known to affect friction reducer performance and can lead to corrosion of frac equipment, such as accelerated pitting. The usage of these oxidizers requires large on-site equipment and carries additional HSE risk.
In addition to preventing microbial growth that can block flow paths and hinder production, the Multi-Cide service is a modular, simple, and more precise solution to deliver. The service provides low-dose, on-the-fly metering of products, using specialized pumping equipment and personnel to determine the most effective biocide program. During the job, our stimulation chemical experts conduct interim bacteria testing to ensure compatibility and performance.
The service offers a multi-component application consisting of a combination of either a quick kill and/or preservative, which are tailored to the customer's assets, challenges, and key performance indicators. This biocide treatment coupled with Halliburton’s stimulation chemical expertise and equipment helps maximize operational efficiency.
The Multi-Cide service has delivered consistent results across shale plays in North America. Although the proposed programs may be different with respect to chemistries, dosages, and applications, the results are positive and consistent.
Not determining the actual severity of the bacteria can lead to either an ineffective treatment or over-treatment, which causes many issues related to fouling and increased costs.
Our trained technical professionals evaluate pre-job water (and sand if applicable) samples to perform bacterial count tests, which determine the severity of biocide growth. With this insight, our experts can determine the combination of biocides needed to effectively kill and control bacteria from the start of the frac through production, depending on the coverage the operator requests.
