After experiencing first hand the inefficiencies in mainstream oil & gas operations, we decided that there had to be a better and more cost effective way to increase recovery factors without drilling new wells. In the United States alone, many hundreds of thousands of wells have been plugged and abandoned while vast quantities of hydrocarbons remain stranded in the reservoirs in which those wells were drilled.
What is preventing operators from extracting the more than 50% of the oil that was originally in place? Reservoir depletion or lack of energy is the primary factor. Tremendous, near wellbore skin damage is the second most important factor. Once reservoir pressure falls due to reservoir drive loss, there is no energy or pressure differential left to move hydrocarbons from the rock matrix where it is stranded to the wellbore where it can be lifted. This problem is exacerbated by near wellbore plugging caused by paraffin, ashphaltene and scale deposition which further restricts flow. in gas wells, liquid banking caused by Capillary Phase Trapping (CPT) can cause more skin damage than all other types combined. In many cases, inefficient and repeated remediation treatments are required in order to preserve just 1/4bbl/day flowrates. Expensive infill drilling or horizontal wells may be able to tap non-depleted pore space but is it economic? If we can inexpensively build a low skin, reservoir drainage zone off of existing vertical wells, we can make the most of what reservoir pressure still exists. If we can repressurize with nitrogen or enhance waterflood performance, we can keep those old wells producing at economic rates and increase recovery factors for many decades.
At Surgitech we decided to canvas the industry to identify unique, emerging technologies that have the capacity to completely change marginal well economics. Let us show you what we can do!
Glenn R. McColpin