Most light crude oil fields have primary recovery rates of only 20%-30%. After that, reservoir pressure drops, and the oil cannot be pumped naturally to the surface.
There are multiple options to stimulate further the reservoir to recover more oft the oil in place. Viscos Energy binary mixture (BM) technology is one of the most efficient technologies to perform such enhanced oil recovery (EOR).
In comparison to other EOR technologies, the binary mixture application has a small surface footprint with most of the treatment being performed directly in the formation.
The binary mixture is a combination of the effects of the following chemical reactions:
Not all of these effects have to happen simultaneously, but can be controlled.
After the initial BM reaction, the increased temperature and release of oxygen (O2) leads to a reaction with the oil, sustaining further heat generation without additionally having to supply Chemicals.
Binary mixture technology can be leveraged in shale oil formations that were previously hydro fractures were applied. Such fields have typically steep decline curves at the end of a field's life cycle. This cycle can be prolonged by applying binary mixture treatment at the beginning of the field's decline.
One important factor to watch in the application on light crude fields is he water cut in the productive zone. Too much water would lead to inefficiencies, as the water would heat up and absorb too much of the energy generated with our BM reaction. Ideally, a reservoir should have a water cut below 50%, however higher cuts are also possible, albeit at lower efficiency.