Parent Well Protection
Highlands has identified the potential to use DT Ultravert to protect existing wells (known as ‘parent wells’) from damage caused by a new threat that has emerged to the industry, known as ‘bashing’. Bashing, which occurs during fracking operations when the frac fluid of an adjacent well (‘child well’) infiltrates the wellbores of nearby parent wells, is a growing concern in the U.S. shale oil and gas industry. Bashing reduces or destroys the production and reserves associated with the parent wells. As well spacing decreases due to infill drilling, the density of wellbores is increasing across many major shale plays. It is a potentially serious problem as public oil and gas companies that experience bashing must reduce their publicly announced reserves proportionately, and banks also reduce their lending limits in proportion to destruction of reserves and production.
DT Ultravert offers a potential solution to the industry’s emerging challenges of minimising and defending against the effects of well bashing. With DT Ultravert it is possible to preferentially pressurize a portion of parent wells adjacent to planned child wells in advance of drilling the child well. In this way, DT Ultravert serves the dual purpose of protecting existing wells from bashing and enhancing child wells.
After successful field demonstrations in the Piceance Basin, parent well protection has become a core focus for DT Ultravert technology. The technology now addresses a major concern for the shale oil and gas industry because reserves previously booked by the industry as ‘Proven,’ may in fact be subject to write-downs due to the potential loss of current and future production due to bashing. DT Ultravert offers a potential solution to that multi-billion dollar problem.