Laser calibrator for pumping unit suspension point and operation derrick pulley center and wellhead alignment

Abstract

A laser calibrator for making the pumping unit suspension center and the working derrick pulley center aligned to a wellhead includes a laser, a laser power supply, a laser installation sleeve, a laser calibration plate and a casing spool; The laser calibrator is characterized in that the laser installation sleeve is cylindrical, the lower end of the laser installation sleeve is provided with a flange matched with the casing spool, the lower portion in a cylinder is provided with a laser power supply, the upper portion in the cylinder is provided with the purchased cylindrical laser, and the periphery of the upper portion of the laser installation sleeve is provided with a laser power switch; the upper portion of a working derrick pulley is provided with the laser calibration plate fixed on a pulley shaft, or the calibration plate is installed on the upper portion of the pumping unit suspension center, and laser beams are projected vertically on the laser calibration plate to measure the deviation distance between the working derrick pulley center or the pumping unit suspension center and the center of the wellhead. The laser calibrator has the advantages that by calibrating and adjusting, the alignment accuracy between the working derrick pulley center or the pumping unit suspension center and the center of the wellhead is high, no deviation exists, operation is fast and convenient, and time and labor are saved.

Description

technical field [0001] The present invention relates to the field of oil field workover operations, in particular to a laser calibrator for the suspension point of a pumping unit, the pulley center of an operation derrick, and the wellhead alignment. Background technique [0002] At present, in the process of oil well operation, because the center of the pulley of the derrick or the center of the suspension point of the pumping unit is not aligned with the center of the wellhead, some of them deviate greatly, which adds many hidden dangers to the workover operation or the production of the pumping unit. During the workover operation, the tubing is not well aligned, the upper tubing is not in place, and the screw thread is bitten, which causes oil leakage from the tubing during normal production and reworks the well; The oil pipe slips off from the oil pipe slideway, which increases the workover time; the third is that the well head wears the oil pipe when the oil pipe is lif...

AI Technical Summary

Problems solved by technology

[0002] At present, in the process of oil well operation, because the center of the pulley of the derrick or the center of the suspension point of the pumping unit is not aligned with the center of the wellhead, some of them deviate greatly, which adds many hidden dangers to the workover operation or the production of the pumping unit. During the workover operation, the tubing is not well aligned, the upper tubing is not in place, and the screw thread is bitten, which causes oil leakage from the tubing during normal production and reworks the well; The tubing slips from the tubing slideway, which increases the workover time; the third is that the wellhead wears the tubing when the tubing is pulled out, either the wellhead wears the tubing or the tubing wears the wellhead

In the production of pumping units, if the center of the suspension point of the pumping unit and the center of the wellhead are not on the same center line, the polished rod or packing box or packing will be partially ground, causing oil leakage at the wellhead or blowout when the oil leakage is serious, or causing sucker rod Grinding the oil pipe will wear out the oil pipe, and the oil pumping will fail, causing the pumping unit to do useless work, wasting electric energy, and affecting the completion of the crude oil production task

The main reason for these problems is that the derrick installation team does not have a calibrator for the center of the derrick pulley or the center of the suspension point of the pumping unit and the center of the wellhead.

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