Method for measuring pumping-unit workdone graphic in oil field

Abstract

The invention supplies a kind of measured method for diagram of work of oil field extractor.It installs inclination end instrument in the beam of oil extractor and load end instrument in the bar of oil extractor, which are connected with data collector. Data collector computes every point's displacement in a operation periodic of oil extractor according to frequency of stroke and current flow. Load end instrument measures every displacement load. Diagram of work is calculated and draw by displacement and load. Then in response to biggest and smallest switchover point of inclination end instrument, calculate time of one periodic of oil extractor and periodic in every minute. By obliquity sensor measuring oil pumping unit's change of obliquity, the invention auto-computes stroke and bare pole's displacement, and it carries out the real-time measure to indicator diagram of work of oil pumping unit. The invitation has the advantage of high accuracy and convenience and so on.

Description

technical field [0001] The invention relates to a method for measuring an indicator diagram of an oil pumping unit in an oil field. Background technique [0002] Calculating and drawing the dynamometer diagram of the pumping unit in the oil field needs to measure the displacement value of the polished rod of the pumping unit and the load value of each displacement value. The existing measurement method is to measure the displacement value of the polished rod with the displacement sensor, and to measure the load value with the load sensor, but the displacement sensor generally uses the measurement methods such as pull wire, Hall and proximity switch, and these sensors have more or less deficiencies. , some cannot be fixed on the pumping unit for a long time, some cannot measure the non-uniform rotation of the pumping unit, some cannot be installed, and some are difficult to adapt to the harsh environment, the cable method cannot be fixed on the pumping unit for a long time, H...

AI Technical Summary

Problems solved by technology

The existing measurement method is to measure the displacement value of the polished rod with the displacement sensor, and to measure the load value with the load sensor, but the displacement sensor generally uses the measurement methods such as pull wire, Hall and proximity switch, and these sensors have more or less deficiencies. , some cannot be fixed on the pumping unit for a long time, some cannot measure the non-uniform rotation of the pumping unit, some cannot be installed, and some are difficult to adapt to the harsh environment, the cable method cannot be fixed on the pumping unit for a long time, Hall and proximity switch The error of the method is relatively large when the pumping unit rotates at a constant speed, and it cannot accurately provide the basis for analyzing the condition of the oil well

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