Measurement devices with memory tags and methods thereof

Abstract

A downhole measurement device includes one or more sensors configured to measure a parameter in a well; a plurality of memory tags for storing measurement data from the one or more sensors; and an ejection module configured to release one of the plurality of memory tags upon a predetermined condition. A method for monitoring a well includes deploying of a measurement device having one or more sensors and a plurality of memory tags into a wellbore; obtaining measurement data of the parameter using the one or more sensors; writing the measurement data to one of the plurality of memory tags; releasing the memory tag having the measurement data; allowing the memory tag having the measurement data to be carried by a flow in the wellbore uphole; reading the measurement data from the memory tag having the measurement data at a location remote from the downhole measurement device.

1 . A downhole measurement device, comprising:
 one or more sensors configured to measure a parameter in a well;   a plurality of memory tags for storing measurement data from the one or more sensors, wherein the plurality of memory tags are configured to be carried by a fluid flow uphole; and   an ejection module configured to release one of the plurality of memory tags upon a predetermined condition.   
     
     
         2 . The downhole measurement device of  claim 1 , wherein the plurality of memory tags are radiofrequency identification (RFID) type memory tags. 
     
     
         3 . The downhole measurement device of  claim 1 , further comprising a self-propel mechanism. 
     
     
         4 . The downhole measurement device of  claim 3 , further comprising a steering mechanism. 
     
     
         5 . The downhole measurement device of  claim 1 , wherein the one or more sensors comprise one or more of a pressure sensor, a temperature sensor, a vibration sensor, a flow sensor, a chemical gauges, or a combination thereof. 
     
     
         6 . The downhole measurement device of  claim 1 , further comprising a mechanism for anchoring itself in the well. 
     
     
         7 . The downhole measurement device of  claim 1 , wherein the downhole measurement device has a dart or plug shape. 
     
     
         8 . The downhole measurement device of  claim 7 , wherein the downhole measurement device comprises a channel to allow a fluid to flow through the downhole measurement device. 
     
     
         9 . The downhole measurement device of  claim 1 , further comprising a memory storing a program for controlling data measurements and/or ejection of the plurality of memory tags. 
     
     
         10 . The downhole measurement device of  claim 9 , wherein the memory is reprogrammable. 
     
     
         11 . A method for monitoring a well or fluid parameter in a wellbore, comprising:
 deploying of a downhole measurement device having one or more sensors and a plurality of memory tags, wherein the deploying is by allowing the downhole measurement device to be carried by a fluid into the wellbore;   obtaining measurement data of the parameter using the one or more sensors;   writing the measurement data to one of the plurality of memory tags;   releasing the memory tag having the measurement data;   allowing the memory tag having the measurement data to be carried by a flow in the wellbore uphole;   reading the measurement data from the memory tag having the measurement data at a location remote from the downhole measurement device.   
     
     
         12 . The method of  claim 11 , wherein the deploying is to a lateral leg in the wellbore. 
     
     
         13 . The method of  claim 12 , wherein the deploying uses a self-propel mechanism on the downhole measurement device to enter the lateral leg. 
     
     
         14 . The method of  claim 11 , wherein the obtaining the measurement data is control by a program stored in a memory in the downhole measurement device. 
     
     
         15 . The method of  claim 11 , wherein the deploying results in the downhole measurement device being lodged at a predetermined depth in the wellbore.