Halliburton Energy Services, Inc.

Tam International, Inc.

Doyle Raymond Warren, Ii

Michael Dewayne Finke

Paul Andrew Reinhardt

Bipin Kumar Pillai

Charles O Stokley

Cili Sun

Jackie D Newberry

A fluid actuated packerand collarassembly is provided for positioning on a tubular member. The collaris moveable by a running toolpositioned within the tubular member and has a closed position and a packer activate position, fluidly connects the collarto the packer elementwhen in the packer activate position, and closes off the flow pathwhen in the closed position. According to a method of the invention, the flow pathextends from the collar to the expandable packer elementand is open to activate the packer elementand closes off the flow pathwhen in the closed position.

Packer with positionable collar

A downlink telemetry system providing improved apparatus and methods for communicating instructions via pressure pulses from surface equipment to a downhole assembly. The apparatus comprises a surface transmitter for generating pressure pulses, a control system, and a downhole receiver for receiving and decoding pulses. In operation, a bypass valve is opened and closed to create a series of pressure pulses received and decoded by a downhole receiver. The method significantly reduces the time required for downlink communication without interrupting drilling and without interrupting uplink communications such that simultaneous, bi-directional communication is achievable if the uplink and downlink signals are sent at different frequencies. The telemetry scheme and algorithm provide an inventive method for filtering and decoding the downlink signals. The algorithm determines the time intervals between pulse peaks and decodes the intervals into an instruction. The algorithm also includes error checking for verifying that the instruction was properly received downhole.

Downlink telemetry system

Growing community of inventors

Spring, TX, United States of America

Doyle Raymond Warren, Ii