Petroleum Industry Practice: Waste Water Disposal
by PETER KENGEMAR I have covered Fracking Technology and have stated that; fracking is applied in other parts of the world but is a technology not needed in our PNG reservoirs, and so it has not been used here. Next point of discussion is on wastewater is disposed and what is the standard industry practice? Should we associate this with the recent catastrophic earthquake? When oil or gas is brought to surface, there is associated formation water that co-exists with oil gas is also comes to the surface and is referred to as produced water. Other practices around the world (not in PNG) use that water to also use for Fracturing tight reservoirs to increase and enable oil gas to flow to the surface. The used water or produced water is normally (global industry practice) rejected under pressure slightly above the subsurface reservoir pressure back into the producing reservoir (same reservoir where oil gas is coming from). However the water is re-injected in a specific well called w