Evolution Engineering Inc.

Other

Schlumberger Technology Corporation

Phoenix Technology Services Inc.

First Choice Drilling

Baker Hughes Canada Company

Aaron William Logan

Justin Christopher Logan

David A Switzer

Patrick Robert Derkacz

Jili Liu

Mojtaba Kazemi Miraki

Mingdong Xu

Gavin Gaw-Wae Lee

Daniel William Ahmoye

Luke Anthony Stack

Barry Daniel Buternowsky

Jili (Jerry) Liu

Jili (jerry) Liu

Angelica J B Francoeur

Hasan Alper Hepguvendik

Kurtis West

Daniel W Ahmoye

Luke Stack

Derek W Logan

Garry Holmen

Kurtis Kenneth Lee West

Robert Andrew Harris

Jason B Wackett

Kurtis K L West

Monica E Varga

Kurtis K West

Brian Oliver Clark

Reza Taherian

Danick R J Normandeau

Alexander Down

Tony Dopf

Rostyslav Kuchma

Kevin Kalman

Vincent Gille Berube

Theunis Van Schalkwyk

Rob Utter

Riley J Berry

Kurtis Kenneth West

Angelica Jb Francoeur

Luke A Stack

Gavin Lee

David Switzer

Kjell Haugvaldstad

Anthony Robert Dopf

Robert J Utter

Xia Pan

Darcy A Downs

Jinhua Wang

Robin Cody Robson

Vincent Raymond Martin

Sheng Xu

Anquan Men

Mahdi Yousefi Koopaei

Grant E Harding

Gilles A Pelletier

Steven D McLawchlin

Sabrina M Huston

Barry D Buternowsky

Dave Switzer

Steven D Mclawchlin

Robert Harris

Angelica J Francoeur

Danick R Normandeau

An assembly for use in subsurface drilling includes a downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length.

Centralizer for downhole probes

Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.

Automated drilling methods and systems using real-time analysis of drill string dynamics

A gap sub assembly for electromagnetic telemetry used in downhole drilling. The gap sub comprises a female part comprising a female mating section and a male part comprising a male mating section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. One or more electrically insulating bodies secure the male part axially and torsionally relative to the female part. The electrically insulating bodies also electrically isolate the male part from the female part. The electrically insulating bodies can be installed through apertures in the female part or at least some of the electrically insulating bodies can be installed before the male mating section is inserted into the female mating section. The electrically insulating bodies can be held in place on the male mating section using a retention apparatus such as a ring, a scarf, pods or an adhesive.

Torsion resistant gap sub

A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.

Integrated downhole system with plural telemetry subsystems

One or more seals may be provided in a gap sub to prevent the ingress of drilling fluid into an insulating gap between a male member of the gap sub and a female member of the gap sub. A first seal may comprise an internal gap sub seal provided near the tip of the male member of the gap sub. A second seal may comprise an external gap sub seal provided near the tip of the female member of the gap sub. The first and second seals may comprise non-conductive materials. The first and second seals may each comprise one or more O-rings. The first and second seals may comprise one or more lips, protrusions or flanges to engage the male and/or female members of the gap sub for maintaining contact with the male and/or female members during deformation of the gap sub.

Sealed gap sub

A downhole probe of a drilling rig has a probe sleeve for protecting the downhole probe. The probe sleeve may be made of a metal or a polymer such as polyphenylene sulfide. The probe sleeve may be heat-shrinkable to provide a tight fit between the downhole probe and the probe sleeve. The probe sleeve may include one or more protrusions shaped to engage a centralizer surrounding at least part of the downhole probe. The one or more protrusions may be arranged to prevent rotation of the centralizer relative to the probe sleeve. The probe sleeve may be made using a modified extrusion process and may include reinforcement to add strength to weld-lines along the length of the probe sleeve. The protrusions may also be used as reinforcement.

Downhole probe sleeves and methods for making probe sleeves

Connectors and connection systems for connecting two tubing sections together are provided. The connectors can include: a first end having an outer surface and adapted for insertion into an end of the tubing section and a second end adapted for connection to a second connector. The connector can have an attachment block in one aspect with a first threaded aperture and a second threaded aperture passing through it so that axial screws and radial screws can secure the connector to the end of a tubing section before it is connected to another connector. In another aspect, the connector can have an attachment slot provided in an outer surface of the first end of the connector sized to fit a retaining clips so that axial screws can secure the connector to an end of a tubing section before the connector is connected to another connector.

Preloadable connectors for tubing

Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90&#xb0; apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.

An assembly for securing a probe retention member at a desired location within a tubular interior such as in a drill string collar. The assembly may use one or more securing members external to the retention member. In some embodiments most of the stresses from the probe retention structures of the retention member are isolated.

Securing means for in-tubing probe retainer

A fluid pressure pulse generator apparatus for a telemetry tool comprising a stator and a rotor. The stator comprises a stator body and a plurality of radially extending stator projections spaced around the stator body and the spaced stator projections define stator flow channels extending therebetween. The rotor comprises a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. At least one of the rotor projections and at least one of the stator projections has a standard outer diameter. At least one of the rotor projections and/or at least one of the stator projections has a reduced outer diameter. The reduced outer diameter rotor and/or stator projections provide bypass channels for flow of fluid and allow for generation of a pattern of different fluid pressure pulses.

Fluid pressure pulse generator for a telemetry tool

An active downhole antenna located in a borehole receives electromagnetic (EM) telemetry transmissions from sources in adjacent boreholes. The antenna comprises a processor operable do decode and measure signal to noise ratio of received transmissions. Data received at the active antenna is transmitted to surface using a high-speed data communication network. The active antenna may handle data communications from multiple downhole EM telemetry transmitters.

System and method for data telemetry among adjacent boreholes

Growing community of inventors

Calgary, Canada

Aaron William Logan