| 摘要 |
<p>The invention relates to a borehole technology in relation to drilling and the use of boreholes and can be used in particular for intensifying the flow of forming fluids, for cleaning the filtration part of the borehole and for eliminating blockages in the boreholes and for improving the quality of the cementing of the casing strings in said boreholes. The invention also increases the effectiveness of the method by obtaining the oscillations without pumping a liquid the possibility of regulating the oscillation parameters. According to the invention a hammer with a flexible suspension arrangements is placed in a pipe string and periodical radial oscillations are produced in said hammer which transmits the radial impacts to the pipe string. The hammer(s) placed in the pipe string have a maximum cross section of 0.9-0.98 in relation to the internal cross section of the pipe string. The periodical radial oscillations of the hammer are created by its axial displacement within the pipe string at a speed selected according to the required force of impact.</p> |
