盘形钻头刮切实验数据分析处理

简要介绍了盘形钻头的结构特点及工作机理,着重对盘形牙轮钻头9种不同结构参数的盘形切削齿与目前镶齿牙轮钻头上使用的瓢形和楔形齿在重庆砂岩上进行了刮切对比实验的实验数据进行了分析处理。求出了刮切实验中测得的不同牙齿在刮切过程中的刮切力的最大值、最小值、平均值和刮切单位体积岩石所需的刮切力的大小,得到了不同结构牙齿在刮切重庆砂岩时的刮切效果,为进一步设计出实用于中硬及软地层并具有较高综合工作性能的盘形钻头提供了实验数据。

ANALYSIS AND PROCESSING THE SCRAPING EXPERIMENTAL DATA OF DISC BIT

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.