Globaltech Corporation Pty Ltd

Michael Alan Klass

Gordon Henderson Stewart

Khaled Hejleh

Brett James Wilkinson

Johan Anwar

Gordon Stewart

Khaled Mufid Yousef Hejleh

A method and system of validating orientation of a core obtained by drilling the core from a subsurface body of material, the method including: a) determining that vibration from drilling is below a nominated level, b) recording data relating to orientation of the core to be retrieved, the data recorded using a downhole core orientation data recording device, c) separating the core from the subsurface body, and d) obtaining from the core orientation data recording device an indication of the orientation of the core based on the recorded data obtained when the vibration from drilling was below the nominated level and before the core was separated from the subsurface body. A method of determining orientation of a core sample obtained by drilling from aboveground into a subsurface body includes recording data relating to a core sample being obtained by the drilling when vibration from drilling is below a threshold; providing an input to a user operated communication device; the communication device identifying a time of the user input to the communication device; retrieving the data gathering device and core sample; communicating between the communication device and the retrieved data gathering device; determining from indications provided by the retrieved data gathering device an orientation of the core sample.

Downhole surveying and core sample orientation systems, devices and methods

An adaptor () has attachment means to releasably attach a core orientation instrument () or survey probe to a drill string component and/or drill string, preferably by one or more screw threads (), retaining screws, bolts, clips or pins or welding/soldering. Anti release means, such as a circlip, can be used to prevent release of the adaptor. A survey system for obtaining data from a drilling operation includes a core orientation instrument, a downhole survey probe and a common single remote controller/data logger configured to control or communicate with both the survey probe and the core orientation instrument. Further, a survey system includes multiple components arranged in a portable container for transport and deployment at a drilling site include a survey probe, a core orientation instrument and a single controller configured to control or communicate with the survey probe and core orientation instrument.

Equipment and methods for downhole surveying and data acquisition for a drilling operation

A drillstring first tube portion () for connection to further tube portions () of a drillstring via respective connection means has a side wall () including non ferromagnetic material, and at least one downhole survey device () mounted directly or indirectly on or within the side wall. The survey device has at least one survey instrument to obtain survey data, a power source () and wireless communication means () to wirelessly receive and/or transmit survey data within or on the side wall. A method of conducting a downhole survey of drilling using such an apparatus is also disclosed, as well as a method of obtaining data gathered downhole. The survey device and a core orientation device () may communicate wirelessly, such as when passing each other.

Downhole surveying

An optical device () transfers an optical signal to or from an electronics unit () used in relation to downhole equipment of a drilling operation. The device includes a body () and an optical signal direction or light path altering means (), the body having a light path arranged to allow the optical signal from a light source () associated with the electronics unit to pass to the optical signal direction altering means, the optical signal direction altering means arranged to cause the optical signal to change direction of travel within the body of the optical device.

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Winthrop, Australia

Michael Alan Klass