US2014182842A1PendingUtilityA1

Method of injection fluid monitoring

43
Individually held — no corporate assignee on recordPriority: Dec 27, 2012Filed: Oct 17, 2013Published: Jul 3, 2014
Est. expiryDec 27, 2032(~6.4 yrs left)· nominal 20-yr term from priority
Inventors:Sushant DuttaDaniel T. GeorgiRandy GoldArcady Reiderman
E21B 47/13E21B 47/113E21B 44/00
43
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Claims

Abstract

A method of monitoring an injection substance injected into an injection well penetrating the earth and a method of monitoring an underground reservoir storing a substance introduced through an injection well are described. The methods include disposing a monitoring system in a borehole, both a transmitting and a first receiving portion of the monitoring system being disposed in the borehole. The method of monitoring an injection substance also includes injecting the injection substance into the injection well, and monitoring, using a processor processing the received signal, flow of the injection substance out of the injection well. The method of monitoring an underground reservoir includes injecting the injection substance into the injection well for storage in the underground reservoir, and monitoring, using a processor processing the received signal, boundary conditions surrounding the underground reservoir.

Claims

exact text as granted — not AI-modified
1 . A method of monitoring an injection substance injected into an injection well penetrating the earth, the method comprising:
 disposing a monitoring system in a borehole, both a transmitting and a first receiving portion of the monitoring system being disposed in the borehole;   injecting the injection substance into the injection well; and   monitoring, using a processor processing the received signal, flow of the injection substance out of the injection well.   
     
     
         2 . The method according to  claim 1 , wherein the disposing the monitoring system in the borehole is in the injection well. 
     
     
         3 . The method according to  claim 2 , further comprising disposing a second receiving portion of the monitoring system including one or more receivers in the injection well. 
     
     
         4 . The method according to  claim 2 , further comprising disposing a second receiving portion of the monitoring system including one or more receivers in a monitor well proximate to the injection well. 
     
     
         5 . The method according to  claim 1 , wherein the disposing the monitoring system in the borehole is in a monitor borehole proximate to the injection well. 
     
     
         6 . The method according to  claim 1 , wherein the disposing the monitoring system in the borehole includes disposing at least one electromagnetic (EM) transmitter in the borehole, altering, using a controller coupled to the at least one EM transmitter, the transmitted EM field to produce a transient EM signal, and receiving, using one or more receivers disposed in the borehole, a received signal based on the transient EM signal. 
     
     
         7 . The method according to  claim 6 , further comprising determining conductivity based on the received signal. 
     
     
         8 . The method according to  claim 7 , wherein the monitoring includes identifying a boundary between the injection substance and another substance based on the conductivity. 
     
     
         9 . The method according to  claim 1 , wherein the monitoring includes monitoring a direction of the flow. 
     
     
         10 . The method according to  claim 9 , wherein the monitoring the direction of the flow includes determining permeability anisotropy of formation surrounding the injection well. 
     
     
         11 . The method according to  claim 1 , wherein the transmitting portion and the receiving portion of the monitoring system move along a length of the borehole and the monitoring is performed at different depths. 
     
     
         12 . The method according to  claim 1 , wherein a plurality of the monitoring systems are disposed along a length of the borehole. 
     
     
         13 . The method according to  claim 1 , further comprising disposing a casing in the borehole and a magnetically permeable material surrounding the casing, wherein the disposing the monitoring system is between the magnetically permeable material and the borehole wall. 
     
     
         14 . A method of monitoring an underground reservoir storing a substance introduced through an injection well, the method comprising:
 disposing a monitoring system in a borehole, both a transmitting portion and a first receiving portion of the monitoring system being disposed in the borehole;   injecting the injection substance into the injection well for storage in the underground reservoir; and   monitoring, using a processor processing the received signal, boundary conditions surrounding the underground reservoir.   
     
     
         15 . The method according to  claim 14 , wherein the disposing the monitoring system in the borehole is disposing the monitoring system in the injection well. 
     
     
         16 . The method according to  claim 15 , further comprising disposing a second receiving portion of the monitoring system including one or more receivers in the injection well. 
     
     
         17 . The method according to  claim 15 , further comprising disposing a second receiving portion of the monitoring system including one or more receivers in a monitor well proximate to the injection well. 
     
     
         18 . The method according to  claim 14 , wherein the disposing the monitoring system in the borehole is disposing the monitoring system in a monitor borehole proximate to the injection well. 
     
     
         19 . The method according to  claim 14 , wherein the disposing the monitoring system includes disposing at least one electromagnetic (EM) transmitter in the borehole, altering, using a controller coupled to the at least one EM transmitter, the transmitted EM field to produce a transient EM signal, and receiving, using one or more receivers disposed in the borehole, a received signal based on the transient EM signal. 
     
     
         20 . The method according to  claim 14 , further comprising determining conductivity based on the received signal, wherein the monitoring includes identifying a boundary between the substance and another substance surrounding the underground reservoir based on the conductivity. 
     
     
         21 . The method according to  claim 14 , wherein the monitoring includes detecting a leak in a seal of the underground reservoir based on a flow of the substance out of the underground reservoir. 
     
     
         22 . The method according to  claim 14 , wherein the transmitting portion and the receiving portion of the monitoring system move along a length of the borehole and the monitoring is performed at different depths. 
     
     
         23 . The method according to  claim 14 , wherein a plurality of the monitoring systems are disposed along a length of the borehole. 
     
     
         24 . The method according to  claim 14 , further comprising disposing a casing in the borehole and a magnetically permeable material surrounding the casing, wherein the disposing the monitoring system is between the magnetically permeable material and the borehole wall. 
     
     
         25 . A method of monitoring an injection substance injected into an injection well penetrating the earth, the method comprising:
 disposing a transmitting portion of a monitoring system in a first borehole;   disposing a receiving portion of the monitoring system in a second borehole;   synchronizing the transmitting portion and the receiving portion time;   injecting the injection substance into the injection well; and   monitoring, using a processor processing the received signal, flow of the injection substance out of the injection well.

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