Method for deep well testing and permeability determination in different directions

Abstract

Methods and systems are disclosed. The method may include installing a fluid detection sensor in a first lateral extension from a primary wellbore, establishing a fluid conduit from a well-head to a second lateral extension from 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. The method further includes 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.

1 . 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.   
     
     
         2 . The method of  claim 1 , wherein the first lateral extension and the second lateral extension each comprise a sidetrack wellbore. 
     
     
         3 . (canceled) 
     
     
         4 . The method of  claim 1 , wherein installing the tubing in the primary wellbore further comprises inserting a coiled tubing from the well-head through the packer. 
     
     
         5 . The method of  claim 1 , wherein the marker fluid comprises a radioactive tracer. 
     
     
         6 . The method of  claim 1 , wherein detecting the marker fluid comprises determining a steady-state flow rate. 
     
     
         7 . The method of  claim 1 , where in determining the fluid flow characteristic comprises determining a permeability. 
     
     
         8 . The method of  claim 1 , wherein in determining the fluid flow characteristic comprises performing fluid flow modelling for a relative geometry of the first lateral extension and the second lateral extension. 
     
     
         9 . The method of  claim 1 , further comprising:
 updating, using a reservoir modeling system, a reservoir model based, at least in part, on the fluid flow characteristic; and   revising a reservoir production plan based, at least in part, on the updated reservoir model.   
     
     
         10 . The method of  claim 9 , further comprising:
 drilling, using a drilling system, an extended reach sidetrack well based, at least in part, on the revised reservoir production plan.   
     
     
         11 . A system for measuring a fluid flow characteristic of a subterranean region of interest, comprising:
 a primary wellbore extending from a well-head into the subterranean region of interest   a first lateral extension drilled from a primary wellbore and through the subterranean region of interest, the first lateral extension equipped with a fluid detection sensor configured to detect a marker fluid in the first lateral extension;   a second lateral extension drilled from the primary wellbore and 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;   a tubing having a fluid conduit installed in the primary wellbore;   a packer inflated 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;   a pump configured to pump a marker fluid through the fluid conduit from the well-head to the second lateral extension and from the second lateral extension through a portion of the subterranean region of interest to the first lateral extension; and   a computer processor, configured to determine the fluid flow characteristic of the subterranean region of interest based, at least in part, on the detected marker fluid.   
     
     
         12 . The system of  claim 11 , wherein the first lateral extension and the second lateral extension each comprise a sidetrack wellbore. 
     
     
         13 . (canceled) 
     
     
         14 . The system of  claim 11 , wherein the tubing comprises a coiled tubing extending from the well-head through the packer. 
     
     
         15 . The system of  claim 11 , wherein the marker fluid comprises a radioactive tracer. 
     
     
         16 . The system of  claim 11 , wherein detecting the marker fluid comprises determining a steady-state flow rate. 
     
     
         17 . The system of  claim 11 , where in determining the fluid flow characteristic comprises determining a permeability. 
     
     
         18 . The system of  claim 11 , wherein in determining the fluid flow characteristic comprises performing fluid flow modelling for a relative geometry of the first lateral extension and the second lateral extension. 
     
     
         19 . The system of  claim 11 , further comprising a reservoir modeling system, configured to update a reservoir model based, at least in part, on the fluid flow characteristic. 
     
     
         20 . The system of  claim 19 , further comprising a drilling system, configured to drill an extended reach sidetrack well based, at least in part, on the updated reservoir model.