Tansley Associates Environmental Sciences Inc. (TAES - offsite drilling waste disposal methods

By: Tansley Associates Environmental Sciences  09-12-2011
Keywords: Drilling Fluids, Drilling Fluid, Gas Commission

Offsite Drilling Waste Disposal Methods (LWD) is a drilling fluid disposal option. Drilling fluids from approved mud systems are land-sprayed off-site onto topsoil during the drilling operation at approved, predetermined application rates. Spraying techniques typically include the use of vacuum trucks or similar equipment. 

Mud systems approved for LWD are limited to: freshwater gel, gypsum water and nitrate water.  All of these systems have been shown to be non-toxic.  If any drill cuttings remain after LWD, they must be disposed of following the criteria for mix-bury-cover, land-spreading or residual solids disposal methods.

Our services include:

  • Acquiring access to spray field and water source 
  • Submitting LWD notifications to appropriate Regulatory Boards including the British Columbia Oil & Gas Commission (OGC), the Alberta Energy & Utility Board (EUB), or the Saskatchewan Industry Resources (SIR)

Pump-off Disposal Method

Pump-off is a fluid disposal method in which clear drilling fluids are applied off-site, normally onto vegetated land following a calculated loading criteria. Pump-offs allow access to a larger spread area, typically by pumping clear fluids through irrigation equipment such as sprinklers, gated pipe, or perforated hose. Tansley Associates can supply all pump-off equipment upon request.

Hydrocarbon-based Drilling Fluid Management

Tansley Associates offers expertise and full management of hydrocarbon-based drilling fluid. We provide full analysis of the options available and develop a sound, efficient and cost-effective plan of action for your approval. Some options include landfills, bio-piles (often misconstrued as composting), recycling management plans (RMPs) and feasibility assessments for land farming.

Keywords: Drilling Fluid, Drilling Fluids, Gas Commission

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