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世界采油设备可靠性水平１．有杆抽油机美国Ｌｕｆｋｉｎ公司的有杆抽油机，使用寿命一般在１５年以上。该公司制造的１台配有２１／２ｉｎ（６３．５ｍｍ）蜗轮减速器的小型抽油机，自从１９２１年安装使用以来，至１９９３年止已经连续运转７２年，累计运转时间达到了４...
World Oil Equipment Reliability Level 1. Rod pumping unit Lufkin company’s rod pumping unit, the service life of more than 15 years. The company has built a small pumping unit with 21 / 2in (63.5mm) worm reducer that has operated continuously for 72 years since 1993 and has accumulated a total of 4 operating hours since its installation in 1921. .