• hydrodynamic analysis of suck-in pulsed jet in well drilling

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 721
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the development of new drilling methods is important for the exploration and production of oil fields. the pulsed jet is a drilling technology of high potentiality. this article proposes a new concept of suck-in pulsed jet with self-excited oscillation, by which a full use of the hydraulic power can be made in the annular space. a hydrodynamic analysis of suck-in pulsed jet with self-excited oscillation is carried out by numerical simulations and rock-breaking experiments. it is shown that with the jet, a negative pressure zone will be formed in the oscillation cavity to ensure automatic sucking of enough annular fluids and the formation of an efficient pulsed jet. the rock-breaking and pressure testing results have verified the reliability of the numerical simulation. the research provides a basis for the development of the pulsed jet drilling technology.

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