Simultaneous injection and fracturing interference testing

1. A method comprising:

in a wellbore formed into a geologic formation comprising a first fracture zone and a second zone, the second zone outside the first fracture zone, the wellbore passing through both the first fracture zone and the second zone:

pumping fluids into the first fracture zone by pulsing the fluids at a variable, positive pressure relative to the geologic formation until a first pressure threshold in the first fracture zone is satisfied, wherein the pumping results in a first pressure profile in the first fracture zone representing pressures in the first fracture zone over time responsive to the pumping, and a second pressure profile in the second zone representing pressures in the second zone over time responsive to the pumping;

in response to determining that the first pressure threshold is satisfied, ceasing to pump the fluids into the first fracture zone for a duration of time;

after the duration of time, re-pumping fluids into the first fracture zone by pulsing the fluids at the variable, positive pressure relative to the geologic formation until a second pressure threshold in the first fracture zone is satisfied, the second pressure threshold different from the first pressure threshold, wherein the re-pumping results in a third pressure profile in the first fracture zone representing pressures in the first fracture zone over time responsive to the pumping;

in response to determining that the second pressure threshold is satisfied, ceasing to re-pump the fluids into the first fracture zone until a third pressure threshold in the first fracture zone is satisfied, the third pressure threshold different from the second pressure threshold; and

determining mechanical properties of the geologic formation based on the first pressure profile, the second pressure profile, and the third pressure profile.

2. The method of claim 1 , wherein the second pressure threshold is greater than the first pressure threshold.

3. The method of claim 1 , further wherein the determined mechanical properties comprise a vertical permeability.

4. The method of claim 1 , further comprising measuring, during the re-pumping, an acoustic response, and wherein the mechanical properties comprise fracture geometry determined based on the acoustic response.

5. The method of claim 4 , further comprising:

while pumping the fluids into the first fracture zone, measuring, by a first sensor in the first fracture zone and a second sensor in the second zone, a first plurality of pressure values over time in the first fracture zone and a second plurality of pressure values over time in the second zone, respectively; and

determining that the second plurality of pressure values within the second zone satisfy a pressure threshold in the first fracture zone.

6. The method of claim 5 , comprising, after ceasing to pump the fluids into the first fracture zone, measuring, by the first sensor and the second sensor, a third plurality of pressure values over time in the first fracture zone and a fourth plurality of pressure values over time in the second zone, respectively.

7. The method of claim 1 , wherein the pumping and re-pumping are implemented in a single trip of a wellbore tool into the wellbore.

8. The method of claim 7 , wherein, in the single trip, the wellbore tool is not removed from within the wellbore after ceasing the pumping and before the re-pumping.