Status quo of research on the application of dynamometer card in oil production process control

The applications of dynamometer card in the process of oil production are widely, some of which are evaluation well yield on well top, failure diagnosis of downhole, pressure calculation, judgment of heavy oil well, etc., but only the two major applications in theory, calculation and evaluation of oil yield on well top, failure diagnosis under the well are introduced in the paper, in which some representative theory research achievements and engineering projects are presented, and the prospect of dynamometer card application in the process of oil production is discussed, too.