Method and apparatus for improved communication in a wellbore utilizing acoustic signals

A method of monitoring a particular wellbore operation, comprising:

• (a) providing a wellbore tubular string;
• (b) providing a plurality of discrete and individually actuable wellbore tools;
• (c) providing at least one receiver communicatively coupled to at least one of said plurality of discrete and individually actuable wellbore tools for selectively actuating at least a particular one of said plurality of discrete and individually actuable wellbore tools upon receipt of a particular command signal;
• (d) providing at least one subsurface transmitter;
• (e) providing at least one subsurface processor;
• (f) providing at least on subsurface sensor for sensing at least one subsurface condition, which is communicatively coupled to said at least one subsurface processor;
• (g) securing said plurality of discrete and individually actuable wellbore tools, said at least one subsurface transmitter, said at least one subsurface processor, and said at least one subsurface sensor in particular and predetermined location within said wellbore tubular string;
• (h) lowering said wellbore tubular string into said wellbore;
• (i) transmitting at least one command signal into said wellbore;
• (j) utilizing said at least one receiver to detect said at least one command signal, and to individually actuate at least one particular one of said plurality of discrete and individually actuable wellbore tools which is associated with said at least one command signal;
• (k) utilizing said at least one subsurface sensor to monitor at least one subsurface wellbore condition;
• (l) utilizing said at least one subsurface controller to receive data from said at least one subsurface sensor and to process said data in a predetermined manner;
• and
• (m) utilizing said at least one subsurface transmitter to communicate information relating to said data to a remote location;
• wherein said at least one subsurface processor is communicatively coupled to particular ones of said plurality of discrete and individually actuable wellbore tools;
• wherein said method further includes providing at least one computer program which is executable by said at least one subsurface processor;
• and
• wherein said at least one computer program comprises at least one of the following computer programs;
• (1) a perforation control computer program for receiving sensor data from said at least one subsurface sensor and for processing said sensor data and actuating said plurality of discrete and individually actuable wellbore tools to perform at least one perforation operation;
• (2) a drill stem test control computer program for receiving sensor data from said at least one subsurface sensor and for processing said sensor data and actuating said plurality of discrete and individually actuable wellbore tools to perform at least one drill stem test operation;
• (3) a flow control computer program for receiving sensor data form said at least one subsurface sensor and for processing said sensor data and actuating said plurality of discrete and individually actuable wellbore tools to perform at least one flow control operation;
• wherein said drill stem test control computer program includes executable instructions which actuate at least one valve of said plurality of discrete and individually actuable wellbore tools in a predetermined programmed manner in order to perform a particular drill stem test operation;
• wherein said drill stem test control computer program is utilized to perform the following specific operations:
• (1) monitoring subsurface acoustic data in order to determined whether or not a wellbore flow has commenced;
• (2) actuating at least one valve which allows communication of fluid between an adjacent zone and said wellbore tubular string;
• (3) allowing wellbore fluid buildup for a predetermined interval;
• (4) sensing temperature and pressure of said wellbore fluid;
• (5) opening at least one valve to allow flow to said wellbore tubular string;
• (6) monitoring temperature, pressure, flow, and the subsurface acoustic data in order to generate data pertaining to production;
• and
• (7) intermittently communicating data to a surface location pertaining to the drill stem test operations.

An apparatus for monitoring a particular wellbore operation, further comprising:

• (a) a wellbore tubular string;
• (b) a plurality of discrete and individually actuable wellbore tools;
• (c) at least one receiver communicatively coupled to at least one of said plurality of discrete and individually actuable wellbore tools for selectively actuating at least a particular one of said plurality of discrete and individually actuable wellbore tools upon receipt of a particular command signal;
• (d) at least one subsurface transmitter;
• (e) at least one subsurface processor;
• (f) at least one subsurface sensor for sensing at least one subsurface condition, which is communicatively coupled to said at least one subsurface processor;
• (g) wherein said plurality of discrete and individually actuable wellbore tools, said at least one subsurface transmitter, said at least one subsurface processor, and said at least one subsurface sensor are secured in particular and predetermined locations within said wellbore tubular string;
• (h) wherein said at least one receiver is utilized to detect said at least one command signal which is transmitted into said wellbore, and to individually actuate at least one particular one of said plurality of discrete and individually actuable wellbore tools which is associated with said at least one command signal;
• (k) wherein said at least one subsurface is utilized to monitor at least one subsurface wellbore condition;
• (l) wherein said at least one subsurface controller is utilized to receive data from said at least one subsurface sensor and to process said data in a predetermined manner;
• and
• (m) wherein said at least one subsurface transmitter is utilized to communicate information relating to said data to a remote location;
• (n) wherein said at least one subsurface processor is utilized to perform at least one frequency domain analysis on data developed by said at least one subsurface sensor.