据美国《世界石油》1982年12月份的报导，美国的低产井（单井产量为1.35吨/日或更低）的产油量连续第三个年头得到增长，1981年达5762万吨，占美国同年总产量4.24亿吨的13.6％。三年中平均每年增长338万吨。1981年还创造了低产井开井数的新记录， According to the U.S. “World Petroleum” report in December 1982, oil production in the U.S. low-yield wells (with a single-well output of 1.35 tons / day or lower) increased for the third consecutive year, reaching 57.62 million tons in 1981, accounting for In the same year, the United States produced 13.6% of the total output of 424 million tons. The average annual growth of 3.38 million tons in three years. In 1981, it also created a new record of the number of open wells in low production wells,