초록 ▼

A method and apparatus for communicating coded messages in a wellbore between a transmission node and a reception node is provided. The coded messages are messages are impressed upon a fluid column which extends between the transmission node and the reception node. A transmission apparatus is provid

A method and apparatus for communicating coded messages in a wellbore between a transmission node and a reception node is provided. The coded messages are messages are impressed upon a fluid column which extends between the transmission node and the reception node. A transmission apparatus is provided at the transmission node which is in communication with the fluid column, for altering pressure of the fluid column to generate at least a portion of the coded message. A reception apparatus is provided at the reception node. The reception apparatus includes a rigid structural component with an exterior surface which is in direct contact with fluid column and an interior surface which is not in contact with the fluid column, and a sensor assembly which detects elastic deformation of the rigid structural component. The transmission apparatus is utilized to alter pressure of the fluid column in a predetermined pattern to generate at least one coded message. The reception apparatus is utilized to detect the coded message in the fluid column through changes in elastic deformation of the rigid structural component.

대표청구항 ▼

1. An apparatus for communicating a coded message in a wellbore between a transmission node and a reception node, through a communication pathway extending there between, comprising:(a) a transmission apparatus, at said transmission node, which is in communication with said communication pathway, fo

1. An apparatus for communicating a coded message in a wellbore between a transmission node and a reception node, through a communication pathway extending there between, comprising:(a) a transmission apparatus, at said transmission node, which is in communication with said communication pathway, for generating at least a portion of said coded message; (b) wherein said coded message is composed of a plurality of message segments wherein each of said plurality of message segments includes a relatively unique transmission attribute which distinguishes each of said plurality of message segments from other unrelated wellbore events; (c) wherein said coded message is defined by operator-selectable coded message attributes of: (1) number of consecutive message segments; and (2) time between consecutive message segments; (d) a reception apparatus, at said reception node, for said coded message, said reception apparatus including a plurality of power-consuming electrical components; (e) a signal attribute monitoring circuit for monitoring substantially continuously for said relatively unique transmission attribute; and (f) wherein during a communication mode of operation at least a portion of said power-consuming electrical components of said reception apparatus are maintained in an off condition until said relatively unique transmission attribute is detected by said signal attribute monitoring circuit.