A Method of Real-time Image Display in the Process of Ultrasonic Imaging Logging Data Acquisition

Abstract

The invention discloses a method for displaying images in real time during the acquisition process of ultrasonic imaging logging. Firstly, a drawing buffer and an array are allocated in the memory, and a color bar is established; when the computer starts the thread for receiving data, if no data It is in a waiting state, otherwise, store the received data into the array, and then judge whether the depth difference meets the set conditions, if so, start the drawing thread, otherwise continue to store data in the array; after the drawing thread starts, create a temporary drawing buffer , and convert each sampling point of the amplitude and travel time difference data in the array into the color in the color bar, and then output it to the temporary drawing buffer; then output the images in the temporary drawing buffer to different ways according to the logging direction In the drawing buffer created at the beginning, it is finally output to the screen, and the drawing thread is suspended, waiting for the next thread to start. The method can draw a two-dimensional image in real time and quickly, and the drawn image can be viewed through a scroll bar at any time during the acquisition process.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic imaging logging and imaging, in particular to a method for displaying images on a screen in real time during acquisition based on an ultrasonic imaging logging tool. Background technique [0002] Ultrasonic imaging logging is to scan the borehole wall in an all-round 360-degree way by rotating the ultrasonic transducer in the downhole, collect the amplitude and travel time difference signals reflected by the ultrasonic wave through the borehole wall, and then upload it to the surface computer acquisition software. The processing technology presents two-dimensional images of amplitude and travel time difference in real time to reflect borehole wall information. [0003] The transducer transmits and receives ultrasonic signals several times for each rotation, and each signal is a horizontal sampling point. The more sampling points, the higher the lateral resolution. Each time the transducer rota...

AI Technical Summary

Problems solved by technology

[0004] However, in the process of drawing two-dimensional images of ultrasonic imaging logging data, due to the large amount of data and the large size of the drawn images, the drawing speed is usually slow and the acquisition position of the probe lags behind.

At the same time, during the acquisition process, you need to use the scroll bar to look back at the drawn image, and it takes a long time to read or generate an image each time

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