Abstract:

The structure characteristic and operation mechanism of disc bit is briefly introduced in the paper, and the experimental data is analysis and processed aimed at the scraping correlation experiment between disc bit with 9 different structural parameters of disc cutting teeth and conventional insert bit with gourd -shape and wedge-shape teeth operating on the sandstone from Chongqing Member. The scraping force is obtained which is required to scrap unit volume rock, as well as maxim value, minimum valued average value of scraping force obtained during the process of scraping by different teeth, and the scraping effect by different structural teeth in scraping the sandstone from Chongqing member is gained, which provides experimental data for fourthly developing the disc bit suitable to midi-hard adsoft formation and being of highly integrated property.

Key words: disc bit, bit teeth, bit performance, experimental data, data analysis