US 2010/0149919 A1Published application

Downhole telemetry system

AssigneeSchlumberger Technology Corporation

InventorArkadiy Yurievich Segal

Life of this patent

Estimating the term…

Loading patent…

Abstract

A downhole telemetry system usable with a subterranean well comprises at least one pressure pulse generator, at least one pressure transmitter located in the internal tubular annulus in the well head and at least one pressure transmitter located in the casing annulus near the well. The system comprises a packer providing hydraulic isolation of the casing annulus and at least one transmitter located below the packer and responding to at least one physical quantity characterizing the bottom-hole zone. The system also includes a data encoder located below the packer to read out the transmitter located below the packer and to respond to at least one physical quantity characterizing the bottom-hole zone, a pressure pulse modulator to modulate pressure pulses generated by the pressure pulse generator, a surface-mounted data-collection unit to converts the output data of the transmitters and to provide a surface-mounted data decoder with data for analysis.

Claims4

Dependent claims

A downhole telemetry system usable with a subterranean well comprising:

at least one pressure pulse generator connected either to an internal tubular annulus or to a casing annulus,
at least one first pressure transmitter located in the internal tubular annulus in a well head to measure a pressure of the internal tubular annulus,
at least one second pressure transmitter located in the casing annulus to measure a pressure of the casing annulus,
a packer providing hydraulic isolation of the casing annulus,
at least one transmitter located below the packer to respond to at least one physical quantity characterizing a bottom-hole zone,
a data encoder located below the packer to read out the at least one transmitter located below the packer,
a pressure pulse modulator adapted to change amplitude characteristics or phase characteristics of a pressure pulse generated by the pressure pulse generator and located in the casing annulus below the packer,
a surface-mounted data-collection unit which converts an output data of the first and the second pressure transmitters into analog or digital data,
a surface-mounted data decoder to receive and analyze the data from the surface-mounted data-collection unit.

6 more elements

Dependencies are inferred from the claim text.