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The new MFC drill one job scraping tool is made by Tarim Oilfield Tabei Project Department, in conjunction with the company\'s new multi-card Petroleum Energy jointly developed working tools, and has obtained national patent. It is composed of centralizers, MFC hydraulic scraper device and sleeve combination switch in series, with a drill pipe connection at both ends of the thread. It works in conjunction with the drilling, grinding, milling, through wells and other working tools, so that a downhole tool to complete a variety of different jobs, reduce the number of the drill string from the next, greatly improve operational efficiency and reduce mining costs. After drilling, milling, grinding, through wells job is completed, by pitching from the wellhead pressure, the scraper blade play, hydraulic scraper device can work the same as a conventional scraper device. And loop holes connected to scrape beneath the sleeve wall switch is also open at this time can be carried out reverse circulation flushing. |