| 摘要 |
FIELD: oil production, particularly devices operating inside wells, for instance for circulation valve opening and closing, as well as for packer seating or removal. ^ SUBSTANCE: downhole tool comprises rod provided with member made as hollow sphere truncated from top and bottom and shaped as upturned cup. The cup bottom has facet extending along outer diameter thereof. Fishing head is arranged on sphere bottom from top thereof. The fishing head has dimensions within the range of sphere radius. Connected with inner sphere bottom part is stem having diameter less than sphere diameter. The stem is connected to the bottom through rod. ^ EFFECT: increased reliability and simplified technological operations to be performed. ^ 2 dwg |
