LOW PRODUCTIVE WELLS
In the article ‘Strippers’ Pose Dilemma for Oil Industry” (The Wall Street Journal) from September 7, 2015, Nicole Friedman writes: “In the United States more than 400,000 stripper wells, most of which produce less than five barrels a day. They losing money every day. If oil prices will be held at the level off $ 30 per barrel or below, more than half of stripper-well production could be shut down. Thousands of individual operators could turn out to be a key element in ending the oil-price rout, rather than a large producing country like Saudi Arabia or a big public company. A sharp drop in stripper-well output, currently estimated at a million barrels a day, or 11 % of total U.S. production, would be nearly impossible to observe as it happens, but it could still shrink the glut that continues to weigh on prices, surprising the market”.
The problem of increasing the productive inflows given great importance. Particularly acute issues of increasing inflows in low-debit wells (from 0 to 5 barrels per day) began to be discussed with the fall in oil prices. Raising the production rate in 5-10 times can completely solve the financial problems.
Wells developed by more traditional but less effective methods ("old-fashioned") require reconstruction (recovery), and the first step in solving the problem of the increase (recovery) productive inflows can be re-opening of productive formations using more effective main methods of opening the casing, cement and productive formation.