FIELD: oil and gas industry, particularly to recover fluid loss properties of reservoir in well having medium output, to increase output from noncommercial wells and to bring unpromising wells into operation.
SUBSTANCE: method involves exciting downhole acoustic transducer with pulsed electric signals having technological range frequency series; converting pulsed electric signal energy into energy of generated pulses of acoustic oscillations acting on proximal productive well zone within technological frequency range and into energy of acoustic oscillations with heterodyne difference frequency acting on remote productive well zone. The acoustic treatment is carried out in serial alternation of control and working states. At control stages proximal and remote productive well zone acoustic response is received by downhole acoustic transducer between acoustic oscillation pulse generation. The acoustic transducer converts acoustic response energy into electric signal energy. After that the electric signal energy is subjected to frequency-response processing to determine technological frequency series range corresponding to maximal level of electric signal in receiving regime. Above frequency series range is used to excite downhole acoustic transducer at working stage following said control stage. Device comprises serially linked presetting generator, multichannel generation means and linkage including logging cable connected with acoustic transducer and having power input means with input connected to power supply buses. Device also has control unit, receiver/transmitter commutator, timing mechanism, power supply commutator and additional power supply unit having input linked to power supply buses and output connected to the first input of power supply commutator. Power supply commutator has the second input attached to power input means output and output linked to input of multichannel generation means power supply. Receiver/transmitter commutator is arranged between linkage and logging cable. Receiver/transmitter commutator has control output connected to input of control unit having output connected to presetting generator control input. Presetting generator timing input is linked to the first output of timing mechanism having the second output connected to control input of receiver/transmitter commutator and the third output linked to control input of power supply commutator.
EFFECT: increased well output and improved production zone communication with productive reservoir by presetting of combined high-frequency and low-frequency application in resonance frequency range of proximal zone and dominant frequency range of remote zone for maximal acoustic response in high-frequency and low-frequency ranges.
4 cl, 3 dwg
