| 摘要 |
Device for repetitive blast excitation of seismic vibrations in a well has electric logging monocable, elongated body, blast charges with electric detonators fixed on the body and distributed along it, electric switches installed on the body and distributed between the charges, each switch has two contact elements one of which is connected to wire of cable, the other contact element is connected to one of electric detonators of charge, each switch has mechanical connection with one of the charges that is installed with possibility of destruction at explosion of charge, in each switch one of contact elements is installed on spring, protective reflectors fixed on the body and placed between the charges and the switches, source of electric power supply. At least one of contact elements of each switch is made of magnetic material. To the device magnetic elements are included, those are fixed to the device by means of springs with possibility of motion for magnetic element with respect to the body of the switch. Mechanical connection of the switches to charges in provided by means of magnetic elements. |
