Mostar Directional Technologies Inc.

Ryan Energy Technologies Inc.

Mostar Directionsl Technologies Inc.

Matthew Robert White

John Petrovic

Victor Petrovic

Neal P Beaulac

Michael Thomas Sutherland

David F Sim

Victor Koro

There is provided a gap sub-assembly for electrically isolating an upstream portion of a drill string from a downstream portion of the drill string. The gap sub-assembly includes a first sub; a second sub; and a non-conductive isolation between the first sub and the second sub, the non-conductive isolation being interposed between respective shoulders of the first sub and the second sub and being interposed between respective threads of a male end of the first sub and a female end of the second sub, the non-conductive isolation comprising an insulative wrapping between at least the respective threads of the first and second subs, wherein connecting the female end of the second sub to the male end of the first sub over the insulative wrapping electrically isolates the respective threads of the first and second subs. A method for assembling such a gap sub-assembly is also provided.

Gap sub assembly for a downhole telemetry system

A system and method are provided for operating a dual telemetry measurement while drilling (MWD) system. The method includes sending a downlink command to a downhole system to switch between a first telemetry mode and a second telemetry mode, one of the first and second telemetry modes comprising mud pulse telemetry, and the other of the first and second telemetry modes comprising electromagnetic (EM) telemetry.

System and method for controlling a dual telemetry measurement while drilling (MWD) tool

A receiver for a dual telemetry measurement while drilling (MWD) system and method for operating same are provided. The receiver includes a mud pulse receiver module for receiving a first signal sent using mud pulse telemetry via a pressure transducer configured to detect mud pulses transmitted through a mud column in a drill string; an electromagnetic (EM) receiver module for receiving a second signal sent using EM telemetry via the drill string and a formation; and a processer for obtaining the first signal when operating in a mud pulse mode and the second signal when operating in an EM mode and having MWD data displayed at a surface system.

Dual telemetry receiver for a measurement while drilling (MWD) system

A system and method are provided for providing electromagnetic (EM) measurement-while-drilling (MWD) telemetry capabilities using an existing mud-pulse MWD tool. An EM tool intercepts the output from the mud-pulse tool and generates an EM signal that mimics a mud-pulse pressure signal. The EM signal is intercepted at the surface by a receiver module that conditions the signal and inputs the signal into the existing pulse tool receiver. Since the EM signal mimics a mud-pulse signal, the pulse tool receiver does not require software or hardware modifications in order to process an EM telemetry mode. The EM tool can be adapted to also provide dual telemetry by incorporating a conventional pressure pulser that would normally be used with the pulse tool.

System and method for downhole telemetry

A communication method for retrieving stored data from an MWD tool, through an antenna used for conventional EM data telemetry. The method comprises establishing electrical contact between a surface transceiver and an EM data telemetry antenna upon retrieval to the surface. The MWD tool then transfers data through the antenna, the data being received by the surface transceiver. Also provided is an electrical isolation connector subassembly comprising an electrically insulative coating to electrically isolate the splitsub components, thereby forming the antenna for data transfer and EM data telemetry.

Growing community of inventors

Calgary, Canada

Matthew Robert White