Optimizing hydraulic fracturing biocides for system and shale compatibility

摘要

A cost-effective microbial control program can offset negative impacts on affected production. There are many sources of microbial contamination during the hydraulic fracturing process as fracturing fluid passes from the surface into the downhole environment (Figure 1). Microbial growth negatively impacts production rates, asset integrity and hydrocarbon quality, making an integrated microbial control program essential for smooth operations and optimal return on investment. Compounding these challenges, completions engineers have one chance to select the most effective biocide program for their well. The following is a deeper dive into biocide efficacy, strengths and weaknesses, and selection strategies to optimize system and shale compatibility.