$25

NASTT NW Technical Lunch: DrillFluid Management and Waste Mitigation

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Danish Canadian Club

727 11 Avenue Southwest

Calgary, AB T2R 0E3

Canada

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Presenter Bios:

Craig Jones, ApplicationsEngineer E.I.T, WaterResources (City of Calgary)BOS Solutions:

Craig Jones has been with BOS Solutions for 4.5years as an Applications Engineer focused on operations support and marketgrowth across North America. He graduated in 2012 with a Petroleum EngineeringDegree from Montana Tech but quickly transitioned to working in the HDD,municipal, and wastewater industries. Asa member of the BOS team, he has dedicated himself to providing onsite, mobilesolutions to reduce the environmental impact of slurry waste generating projects.

Abstract:

Drill Fluid and Management and Waste Mitigation

Drilling fluidperformance is critical to ensure efficient reaming or drilling. An effectivefluid product will reduce drag and torque, provide hole stability, andeffectively transport drill solids to surface. The most effective means ofmaintaining drill fluid is by utilizing centrifuges to continually process theactive fluid. Centrifuges are fully variable units with high processingcapacity to continuously process bentonite muds. Creating consistency in thedrilling fluid is essential in avoiding frac-out scenarios.

Along with providingsolids control equipment and services BOS can utilize its equipment to dewatermud slurries and reduce waste volumes. The benefits are shown in the two casestudies below.

Dewatering

By utilizing the BOSIII system, along with a polymer addition, BOS can successful reduce drillingmud and waste in to clean water and dry, stackable solids. The clean water canbe reused in the HDD process or disposed of in a more environmentally friendlymanner. For the case study discussed, by performing the dewatering technologyon the slurry waste BOS:

• Reduced the waste volume hauled offsite by 63%

• Eliminated the use of vacuum trucksto haul slurry waste

• Met all requirements to dischargewater down the sanitary sewer drain

• Reduced waste handling cost by$127,000

HDD Cuttings Drying

During mostHorizontal Directional Drilling (HDD) crossings, shale shakers are utilized asthe primary means of solids control. This system results in a very wet drillingwaste being generated with a high volume of fluid losses at surface. The totalvolume of drilling waste is usually transported off-site by vacuum trucks andhas to be disposed of at a Class II wet waste disposal facility. Not only isthis practice expensive, but increases traffic risk and environmental impact.

The BOS systemeffectively dries the drill cuttings during operation. This results in a drywaste product that passes the Paint Filter Test and recovered drilling fluidreused in the mud system.

Operating the BOSCuttings Drying System resulted in:

• Reduction of daily hydro vacuumtrucks from 5 operating to 1 on standby per shift when processing from entrancelocation (Vacuum truck charge = $200/hr)

• Reduced total waste volume by 30%,and re-classified as a stackable waste product

• Reduction of water usage for dilutionby recovering over 250 m3 (2,100 bbl) of fluidAneed was identified for an effective and affordable method to restore flow andfire flow to four water distribution mains in the City of Calgary’s system, allof which had been shut off due to main breaks which were either completelyinaccessible (i.e., expressways, rail lines) or too costly/unsafe (i.e., 20+meters deep) to repair. Thispresentation outlines the decision making process to resolve these issues aswell as the implemented Slip Lining solution.

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Danish Canadian Club

727 11 Avenue Southwest

Calgary, AB T2R 0E3

Canada

View Map

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