Electromagnetic high-frequency pulse unblocking and seam-forming technology, also called high-concentration electric detonation or electric pulse de-blocking technology, is a pure physical stimulation method that uses electric pulse to generate liquid electric effect on oil layer. The logging cable is used to lower the unblocking instrument into the oil layer of the well. The instrument releases high-voltage pulse current in the liquid filled with water and oil, and instantaneously penetrates the water to generate a strong magnetic field, which causes the liquid to generate strong pressure on the well. Wave and cavitation, the repeated radiation of liquid shock waves can be converted into pressure waves to create new micro-cracks on the formation, and the seepage area is increased. The influence radius is in the range of 1m-5m. Mainly to improve the permeability of the near-well zone.
Increasing production principle: Using the powerful shock wave generated by the electric spark explosion, the oil layer perforating compaction layer, the throat blockage and pollutants in the near-well zone are bombarded, causing vibration and crushing to utilize the cavitation and the pressure of the oil layer itself, which will be broken. After the shock, the loose blockage is sucked and pushed into the wellbore to release the oil layer blockage, clear the oil flow channel, improve the permeability characteristics of the oil layer near the well zone, and the acoustic energy and electromagnetic field energy generated by the electric spark explosion can be transmitted. To the deep part of the oil layer, improve the oil-water interface, increase the oil-water migration speed, and thus increase the oil production.
Key basic technologies: Energy storage technology, switching technology, pulse modulation technology and load characteristics. |