Method of logging of natural fractures during drilling, monitoring and adjusting drilling operations and optimizing completion designs

A method for creating a log of natural fracture properties along a well, comprising:

• inducing tube waves in the well during drilling the well;
• detecting acoustic energy in the well, the energy comprising tube wave reflections from formations adjacent to the well;
• inverting the detected acoustic energy to determine at least one of a rock property, a near wellbore hydraulic conductivity, and natural fracture occurrence;
• and
• creating a record with respect to axial position along the well of the at least one of a rock property, a near well hydraulic conductivity and natural fracture occurrence.

A method for optimizing well completion based on pre-existing natural fracture properties comprising:

• determining at least one of a rock property, a near wellbore hydraulic conductivity, and natural fracture occurrence during drilling the well using detected reflections from tube waves propagating in the well;
• creating a record with respect to axial position along the well of the at least one of a rock property, a near well hydraulic conductivity and natural fracture occurrence;
• selecting axial intervals in the well having the at least one of a rock property, a near well hydraulic conductivity and natural fracture occurrence being within a selected range;
• and
• hydraulically connecting the selected axial intervals to the well and treating the hydraulically connected selected axial intervals.