Abstract:To increase reservoir-encounter drilling ratio while horizontal directional drilling, this paper presents a novel LWD tool based on the high frequency electromagnetic wave, which can get the accurate distance between the drilling tools and reservoir boundary. While horizontal directional drilling in the reservoir, the LWD tool mentioned transmits a modulated single-frequency pulse, the pulse width is about 10ns and the central frequency is about 350MHz, by the transmitting antenna. The high frequency electroma… Show more
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