Process and system for enhanced depth penetration of an energy source

A method in a subsurface formation, comprising:

• a) determining a target frequency of the formation, wherein the step of determining the target frequency of the formation comprises:
• i) obtaining a sample of the formation;
• ii) applying mechanical stimulation energy toward the sample at a testing frequency;
• iii) measuring an impedance of the sample at the testing frequency;
• iv) determining if the impedance of the sample is at a minimum;
• v) altering the testing frequency if the impedance of the sample is not at the minimum;
• vi) repeating steps ii)-v) until the impedance of the sample is at the minimum;
• and
• vii) recording as the target frequency the testing frequency when the impedance of the sample is at the minimum;
• b) deploying sensors configured to measure a depth of penetration of electromagnetic radiation in the formation;
• c) mechanically stimulating the formation at the target frequency to induce mechanical stress in the formation;
• d) directing the electromagnetic radiation at an electromagnetic frequency towards the formation while or after mechanically stimulating the formation at the target frequency in step c);
• e) using the sensors to measure the depth of penetration of the electromagnetic radiation applied in step d);
• f) adjusting the target frequency of the mechanical stimulation or the electromagnetic frequency based on the measurement made in step e).