Expert Interview with Bill Stimeling
In 2009, the city of San Benito, TX completed the construction of a new six-million-gallon-per-day (MGD) microfiltration plant, which replaced a plant that had been in operation since 1928. The new facility is considered one of the most modern and innovative water treatment plants in the region and has been recognized for its use of microfiltration and solar power. Its chlorination system, while more traditional than these technologies, was selected for its cost-efficiency, reliability and flexibility.
On offshore Oil & Gas production and extraction facilities, the sewage treatment system often manages an enormous amount of raw wastewater, i.e., …human sewage. The untreatable or separated wastes from these systems are commonly referred to as “screened or filtered raw biomass”, or, “wet waste sludge.”
With longer laterals being drilled and stages being added, well completion by hydraulic fracturing (frac) now requires an ever-increasing amount of water for every well that is drilled and completed. Ensuring that the water used in frac is free of bacteria is a critical part of the overall treatment and conditioning of water before it is sent downhole. This is especially true as more operators are using recycled flowback and produced water for completion activities.
The safe handling of chlorine gas and a secure chlorination system includes a proper facilities design, an operation and maintenance program, the appropriate safety equipment and an emergency action plan. The following, while not all-encompassing, will cover the chemical and physical characteristics of chlorine, as well as the many safety steps and procedures that must be followed to keep your facility safe.
Though freshwater has traditionally been the primary vehicle for hydraulic fracturing well completion, a variety of stressors are driving exploration and production (E&P) companies to increase their use of produced water. These stressors include freshwater availability and use in E&P operations, increased costs associated with the acquisition of fresh water, and the costs and regulatory limits on the disposal of produced water.
In today’s credit-crunched, bottom-line-oriented economic environment, utilities in the water and wastewater sectors are scrapping plans to replace old equipment with new technologies and are looking for ways to improve existing equipment performance with system upgrades.
As exploration and production (E&P) companies continue to focus on improving the efficiency of water usage and disposal operations, operators are looking for opportunities to inexpensively treat produced water, as well as improve the use of treated-produced water for drilling and well completion activities.