|Outtake below is very useful to understanding particulate oil as derived from Nucleation.|
Overcoming Old Misconceptions About Shale and Oil
The first misunderstanding is that there is only one kind of oil shale, those that are near the surface and which must be mined or heated in-situ to make oil. The U.S. holds the most reserves in the world of that kind of oil shale, but it is not currently economical to exploit it as a source of crude oil. The kind of shale formations that are economically viable for oil production, using horizontal drilling and hydraulic fracturing, are thermally mature and located deep underground. In these deep shales, much of the kerogen has been converted to oil and is present in the rock matrix in liquid form. A second thing that has held back exploration for oil in shale is that many believed that the oil molecule, at 0.5+ nanometers, was too large to flow through small matrix “pore throat” or spaces between the rock particles typical in many shale formations. Extensive research by EOG Resources and others has proven that shale formations such as the Eagle Ford actually have a fair amount of porosity and permeability which can allow for long term oil recovery. The illustration below from EOG shows how oil can flow through a shale reservoir.