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US 7,256,706 B2Granted
Hybrid well communication system
AssigneeShell Oil Company
InventorsMark Christopher Haase, John Foreman Stewart
Life of this patent
Estimating the term…
Abstract
A hybrid, hardwired and wireless well communication system having a fiber optical, electrical or other signal transmission conduit extending from the wellhead into the well and one or more wireless signal transducers that are located at a distance from the conduit and transmit wireless signals to one or more signal converters which are coupled to the conduit, and which are located near branchpoints of a multilateral well.
Claims10
A downhole communication system for transmitting signals in a hydrocarbon fluid product well, the system comprising:
- a control unit at or near the earth surface;
- a downhole signal converter
- a signal transmission conduit for transmitting signals between said control unit and said downhole signal converter;
- a downhole measuring and control assembly, which is equipped with a wireless signal transducer, and wherein;
- said signal converter and said signal transducer are located at different depths in the well and form a wireless communication link there between;
- the well is a multilateral well comprising a main wellbore and one or more wellbranches;
- the signal transmission conduit extends from the wellhead into the main wellbore;
- at least one signal converter is located at or near a downhole branchpoint;
- and
- said downhole measuring and control assembly is located in at least one wellbranch away from the branchpoint;
- said signal transducer and said signal converter forming a wireless link along a substantial part of the length of said wellbranch.
8 more elements
Dependencies are inferred from the claim text.