with hydraulic coupling lines 28 and 29 attached to hydraulic inputs 30 and 31 respectively it is obvious of course that other type vibrators can be used than hydraulic vibrators an example is an electromagnetic vibrator in which case the hydraulic source would be a generator for the necessary controls for generating the proper frequency and phase useful for carrying out the method such vibrator is state of the art and will not be further detailed in order to properly control vibrator 26 a control valve 32 is attached to the hydraulic input this valve is generally a spool valve with an electromagnetic input which can be controlled by any electric system 33 control system 33 has a frequency control input 34 and a phase control input 35 phase control input 35 controls not only the phase of vibrator 26 but also transmits a controlled phase along with the proper frequency to antenna 36 a frequency control 34 and 35 are inputted to the control system through circuit means 37 and 38 respectively the control system 33 is inputted to the control valve 32 through a wire or any circuit means 39 a pipe 40 has a flange 41 at one end which is attached to a mating flange 42 on vibrator 26 it is obvious that one can construct the pipe and the vibrator as one unit the flange provides ease in maintenance of the assembly pipe 40 contains a flange 43 which will mate with flange 44 of valve 19 inside pipe 40 is mounted a piston 45 which is attached therethrough a rod 46 to the mechanical output of vibrator 26 not shown piston 45 can contain any number of piston rings or 34 o 34 rings or whatever means are necessary to provide proper operation of.