http://www.worldoil.com WorldOil USGS study shows unconventional oil and gas production not currently affecting drinking water quality http://www.worldoil.com/news/2017/6/1/usgs-study-shows-unconventional-oil-and-gas-production-not-currently-affecting-drinking-water-quality A new U.S. Geological Survey study shows that unconventional oil and gas production in some areas of Arkansas, Louisiana, and Texas is not currently a significant source of methane or benzene to drinking water wells. These production areas include the Eagle Ford, Fayetteville, and Haynesville shale formations, which are some of the largest sources of natural gas in the country and have trillions of cubic feet of gas. GE drones are coming to squeeze more savings from the oil patch http://www.worldoil.com/news/2016/10/6/ge-drones-are-coming-to-squeeze-more-savings-from-the-oil-patch General Electric has a solution for U.S. oil and natural gas explorers struggling to save more money after squeezing drilling costs by more than a third during the past two years. Driving efficiency in cemented liner completions http://www.worldoil.com/magazine/2016/june-2016/special-focus/driving-efficiency-in-cemented-liner-completions Expanding the boundaries of ball-drop technology has led to a simple, yet effective design for reducing completion time and improving operational efficiency. BHP shale writedown has some banks asking: Where’s the rest? http://www.worldoil.com/news/2015/7/16/bhp-shale-writedown-has-some-banks-asking-where-s-the-rest The size of BHP Billiton Ltd.’s $2.8-billion writedown for its U.S. shale assets took some banks by surprise: at least two thought it was too small.