Method for deep well testing and permeability determination in different directions

A method for measuring a fluid flow characteristic of a subterranean region of interest, comprising:

• drilling a primary wellbore from a well-head through the subterranean region of interest;
• drilling a first lateral extension from the primary wellbore through the subterranean region of interest;
• drilling a second lateral extension from the primary wellbore through the subterranean region of interest, wherein the second lateral extension is located downhole from the first lateral extension on the primary wellbore, and wherein the first lateral extension and the second lateral extension are in fluid communication with the primary wellbore and the subterranean region of interest;
• installing a fluid detection sensor in the first lateral extension;
• installing a tubing having a fluid conduit in the primary wellbore;
• inflating a packer between the tubing and an inner circumferential surface of the primary wellbore at a depth between the first lateral extension and the second lateral extension, wherein the second lateral extension is in fluid communication with a fluid conduit of the tubing, and wherein the packer prevents the fluid conduit of the tubing from being in fluid communication with the first lateral extension through the primary wellbore;
• pumping a marker fluid through the fluid conduit from the well-head to the second lateral extension and into the subterranean region of interest;
• detecting, using the fluid detection sensor, the marker fluid in the first lateral extension, wherein the marker fluid in the first lateral extension has flowed from the second lateral extension through the subterranean region of interest;
• and
• determining the fluid flow characteristic of the subterranean region of interest based, at least in part, on the detected marker fluid.