The Prevention of Bit Balling by Electro-Osmosis II

通过电渗透 II 防止钻头成球

• 批准号: 9222753
• 负责人: George Cooper
• 金额: $ 11.7万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-01 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9222753&HistoricalAwards=false
• 关键词: Prevention; Bit; Balling; Electro; Osmosis

The objective of this research is to carry further the work that has been previously accomplished in reducing bit balling, and to double the rate of penetration while drilling in shales by applying a negative potential of a few volts to the bit which causes the development of a lubricating water film at the bit-shale interface. Experiments so far have been carried out with roller-cone bits at small scale. In this work it will be determined if similar good results can be obtained at larger scale, with drag bits as well as with roller-cone bits, and in the presence of clay-containing drilling muds. The project will be supported by matching funds from industry.

这项研究的目的是进一步开展之前已经完成的减少钻头包球的工作，并通过在钻头上施加几伏特的负电位，使钻头-页岩界面形成润滑水膜，从而使页岩钻井时的钻速翻倍。迄今为止，实验都是用小尺寸的牙轮钻头进行的。在这项工作中，将确定在更大的范围内，在含粘土的钻井泥浆存在的情况下，是否可以使用拖曳钻头和牙轮钻头获得类似的良好结果。该项目将得到工业界的配套资金支持。