Application of automatic gauging technology of rod pump dynamometer card in the oilfield

The principal, composition and functions of the automatic gauging technology of rod pump dynamometer card were introduced in this paper. Based on automatic diagnosis technology of dynamometer card, automatic gauging can be achieved by determining effective stroke of pump plunges. According to field application, this technology was characterized by accurate diagnostic results, prompt judgment for oil well condition, which can enhance gauging accuracy in oil well, simplify the procedure of ground, cut the cost and improve the efficiency and management.