Sensors in Swellable Materials

Abstract

A downhole equipment includes a tubing configured for deployment in a wellbore; and a measurement unit disposed on outside of the tubing, wherein the measurement unit comprises a detector embedded in a swellable material. A method for formation property measurement includes deploying a downhole equipment to a predetermined location inside a wellbore, wherein the downhole equipment comprising a tubing and a measurement unit dispose on outside of the tubing, wherein the measurement unit comprises a detector embedded in a swellable material; allowing the swellable material to swell; and performing measurements.

1 . A downhole equipment, comprising:
 a tubing configured for deployment in a wellbore; and   a measurement unit disposed on outside of the tubing,
 wherein the measurement unit comprises a detector embedded in a swellable material. 
   
     
     
         2 . The downhole equipment of  claim 1 , wherein the swellable material is a swellable rubber. 
     
     
         3 . The downhole equipment of  claim 1 , wherein the detector is a pressure measurement device. 
     
     
         4 . The downhole equipment of  claim 3 , wherein the pressure measurement device comprises at least one flexible pressure probe. 
     
     
         5 . The downhole equipment of  claim 1 , wherein the tubing is made up of a plurality of sections and comprises cross coupling protectors to protect joints between the plurality of sections. 
     
     
         6 . The downhole equipment of  claim 5 , wherein the measurement unit is disposed between the cross coupling protectors. 
     
     
         7 . The downhole equipment of  claim 1 , wherein the detector is a resistivity measurement device. 
     
     
         8 . The downhole equipment of  claim 7 , wherein the resistivity measurement device comprises one or more electrodes. 
     
     
         9 . The downhole equipment of  claim 7 , wherein the resistivity measurement device comprises one or more electromagnetic coils. 
     
     
         10 . The downhole equipment of  claim 1 , wherein the measurement unit is a resistivity array comprising a plurality of electrodes. 
     
     
         11 . The downhole equipment of  claim 10 , wherein the plurality of electrodes are separated by the swellable material disposed on the outside of the tubing. 
     
     
         12 . A method for formation property measurement, comprising:
 deploying a downhole equipment to a predetermined location inside a wellbore, wherein the downhole equipment comprising a tubing and a measurement unit dispose on outside of the tubing, wherein the measurement unit comprises a detector embedded in a swellable material;   allowing the swellable material to swell; and   performing measurements.   
     
     
         13 . The method of  claim 12 , wherein the allowing the swellable material to swell results in pushing the detector to contact a wall of the wellbore. 
     
     
         14 . The method of  claim 12 , wherein allowing the swellable material to swell results in a hydraulic isolation along the outer diameter of the tubing. 
     
     
         15 . The method of  claim 12 , wherein the swellable material is a swellable rubber. 
     
     
         16 . The method of  claim 12 , wherein the detector is a pressure measurement device. 
     
     
         17 . The method of  claim 12 , wherein the detector is a resistivity measurement device. 
     
     
         18 . The method of  claim 17 , wherein the resistivity measurement device comprises a resistivity array having a plurality of electrodes separated by the swellable material disposed on the outside of the tubing. 
     
     
         19 . The method of  claim 12 , wherein the measurement unit comprises a pressure measurement device and a resistivity measurement device. 
     
     
         20 . The method of  claim 12 , wherein the detector is at least one member selected from the group consisting of: acoustic measurement devices, temperature measurement devices, vibration measurement devices, chemical composition measurement devices, water or gas cut measurement devices, flow rate measurement devices, mechanical stress measurement devices, and radioactive tracer measurement devices.