Quick recognizing method for drill pipe joints on basis of electromagnetic waves

Abstract

The invention provides a quick recognizing method for drill pipe joints on the basis of electromagnetic waves. The quick recognizing method includes the following steps that characteristic parametersof input drilling tools are recorded according to the input sequence of the drilling tools; the input drilling tool structure drawing is generated according to the recorded characteristic parameters,and the drilling tool structure drawing which is 5 m below a blowout preventer and 5 m above a drilling table surface is intercepted to be displayed to a driller; the electromagnetic waves are emittedinto a well mouth below the drilling table surface, real-time characteristic parameters of a drilling tool located in the first position are acquired according to the reflected electromagnetic wavesand are compared with the characteristic parameters of the input drilling tools, the drilling tool structure drawing is updated in real time, and the first position is the position where the first drill pipe joint in the well mouth below the current drilling table surface is located; and according to the displayed drilling tool structure drawing, whether the drill pipe joints are located in the blowout preventer is determined. The method has the advantages that the driller can judge the positions of the drill pipe joints directly and accurately in an emergency, safe and quick well shutdown canbe realized and the like.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field drilling devices, and in particular relates to a rapid identification method for drill pipe joints based on electromagnetic waves. Background technique [0002] In oil drilling, the well needs to be shut down immediately due to overflow, well kick, and blowout. However, when shutting in the well, the driller needs to lift the drilling tool from the bottom of the well, judge the position of the drill pipe joint, and make the drill pipe joint avoid the desired position. Closed BOP core to keep the tool joints from being inside the BOP. The judgment and operation of the position of the drill pipe joint will cost the driller at least 10 to 30 seconds, which seriously affects the timely execution of well control measures in emergency situations. At the same time, unfounded forcible and rapid drilling will also increase the risk of pipe sticking, resulting in excessive swabbing pressure and f...

AI Technical Summary

Problems solved by technology

The judgment and operation of the position of the drill pipe joint will take the driller at least 10 to 30 seconds, which seriously affects the timely implementation of well control measures in emergency situations

At the same time, unfounded forced and rapid drilling will also increase the risk of pipe sticking, resulting in excessive swabbing pressure and further expanding the risk of well control

At present, judging the position of the drill pipe joint still depends on the experience of the driller. This method is inefficient and varies from person to person, which is not conducive to the implementation of measures in emergency situations.

Images