DIRECTIONAL DRILLING & FRACKING 2018/ key indicators
The present review represents a brief analysis of key statistical indicators for patent applications registered in patent offices around the world in 2018 and related to the issues of horizontal directional drilling and hydraulic fracturing of hydrocarbon reservoirs. As of the date of this publication the data was summarized from 2364 patent applications registered in 28 offices around the world and prepared by 534 applicants from 22...