Globaltech Corporation Pty Ltd

Longyear Tm, Inc.

Other

Minex Crc Ltd

Gordon Henderson Stewart

Khaled Hejleh

Brett James Wilkinson

Christopher L Drenth

Michael Alan Klass

Johan Anwar

Raymond Hill

Jerome Christian Dupuis

Anton Kepic

Detector device () mounts to a drilling rig () to sense sound or vibration signalled from downhole. The device () has a transmitter () to transmit data and/or an alert relating to sensed sound and/or vibration associated with deployment and/or positioning of a tool downhole. The device () recognises that one or more predetermined events or a pattern of events or one or more particular sound and/or vibration signatures occur(s). Downhole device () has a transmitter () transmitting a signal indicating a sensed pressure, position or motion change downhole. Communication between the downhole device and the device at the surface to determine depth or distance e.g. time of flight of a signal emitted by one device and the return signal from the other device or from the send and received times of the signal between the two devices based on their respective timers.

Devices, systems, and methods for downhole event detection and depth determination

A drilling system can comprise a drill string having a longitudinal axis and comprising at least one drill rod and a wireless sub coupled to the at least one drill rod. The wireless sub can comprise processing circuitry that is configured to detect mechanical impulses of the drill string. The processing circuitry can be configured to wirelessly transmit signals indicative of the mechanical impulses to a remote computing device.

Devices, systems, and methods for wireless data acquisition during drilling operations

A core barrel head assembly having at least one electronic instrument that is configured to obtain orientation data; a power source; and a communication means to receive and/or transmit orientation data for use in a core sample down hole surveying and sample orientation system that is configured to provide an indication of the orientation of a core sample relative to a body of material from which the core has been extracted, and also to a method of core sample orientation identification.

Core barrel head assembly with an integrated sample orientation tool and system for using same

A downhole sensing device deployment control apparatus () includes means to control speed of the sensing device progressing within a borehole associated with a drilling operation. A mechanical, electrically powered and/or hydro-dynamic drag/damping means/device () can be provided as part of the control apparatus to control speed of deployment down the borehole. The drag device () can have a plurality of wheels or rollers to contact an internal bore of an inner pipe of a drill string. Rotation control means (), () can be provided to control an amount of rotation and/or direction of rotation of the wheels or rollers relative to travel of the sensing device within the borehole. Valving () can be provided. A two stage (dual) flow/pressure control valve () can be provided. A sensing device (release) and downhole position latch () can be provided. The sensing device can be pumped into the borehole, such as by compressed air.

Deployment of downhole sensing devices

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

A method utilized in borehole logging, such as in surveying or exploration relating to a subsurface formation. The method includes deploying a logging instrument that includes a pressure sensor into a borehole drilled into the formation. The method includes the steps of obtaining a first pressure value at a first depth in the borehole, obtaining at least one further pressure value subsequent to the first pressure value during withdrawing or advancing the logging instrument in the borehole, and determining one or more characteristics of the subsurface formation, utilizing at least one of the further pressure values, or a change in pressure (&#x394;&#x3c1;) between the first pressure value and a said further pressure value or values, or a change in pressure (&#x394;&#x3c1;) between a said further pressure value and another said further pressure value, or a combination of two or more of such values.

Borehole logging methods and apparatus

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.

Growing community of inventors

Claremount, Australia

Gordon Henderson Stewart