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前言当前在美国的497000口生产井中,为使原油从地层流入储罐,有461000(92.8％)多口井需要人工采油。现在美国78.9％的生产油井是用常见的有杆抽油法进行采油的。今年估计会有562000次井底设备事故,其中376000(67％)多次是井下抽油泵和抽油杆柱的事故。产油公司今年将花费5亿多美元来修理井下设备。其中将近一半(2.44亿美元)将花在修理、替换抽油泵和抽油杆所用的材料和劳务上。采油工业中维修有杆抽油装置的费用,在该工业的全面经济中是个很重要的因素。上述估计的费用还不包括
INTRODUCTION Currently, of the 497,000 production wells in the United States, 461000 (92.8%) wells require artificial recovery in order to allow crude oil to flow from the formation into the storage tank. Now 78.9% of production wells in the United States are produced by the common sucker-rod pumping method. It is estimated there will be 562,000 bottom hole equipment accidents this year, of which 376,000 (67%) are the result of multiple downhole sucker-rod pumps and sucker rods. Oil companies will spend more than $ 500 million this year to repair underground equipment. Nearly half of these ($ 244 million) will be spent on repairs and replacement of materials and services used in fuel pumps and sucker rods. The cost of repairing sucker-rod pumping units in the oil recovery industry is an important factor in the overall economy of the industry. The above estimated costs are not included