These monovalent clear fluids cover a density range of 1.0 sg. Intermediate densities are achieved by mixing sodium with potassium, potassium with cesium, sodium with cesium, or each individual formate with water. Each fluid exhibits superior performance characteristics when compared to conventional base fluids. Conventional halide brines with high levels of chloride and bromide ions often require special disposal. The costs associated with disposal and clean up of halide brines has added to the interest in formate fluids as a best practice alternative.
Formate fluids are readily biodegradable and minimize the impact on the environment.
The monovalent, solids-free nature of the formate family of fluids has proven to be beneficial in improving operator reservoir productivity. Documented field results and core studies have elevated operators level of confidence to test these new formate fluids in their drilling and completion programs. Well paths are becoming more torturous as operators push the envelope of technology to drain reservoirs in the most effective manner. To improve wellbore hydraulics and the efficiency of downhole tools, operators and drilling contractors are turning to solids-free formate fluid formulations. The formate family of fluids has proven to be readily reclaimable for reuse.