Scientific Drilling International, Inc.

Brian Daniel Gleason

Matthew A White

Timothy Whitacre

Benjamin C Hawkinson

Mohamed Youssef

Marc Willerth

Peter Smidth

Douglas Ridgway

Robert Moore

Brett H Van Steenwyk

Larry Joseph Schoennauer

Robert Peter Kerr

Adam Olzick

Bill Denzel

Stephen D Morrow

A method may include providing a drill string including a measurement tool. The drill string may be positioned in a wellbore. The method may include taking a measurement with the measurement tool at a first location. The method may include coupling a pipe stand including a first selected number of tubular segments to the drill string, the first selected number being two or more. The method may include lowering or advancing the drill string into the wellbore the length of the pipe stand. The method may include taking a measurement with the measurement tool at a second location. The method may include raising the drill string the length of a tubular segment. The method may include removing a second selected number of tubular segments from the drill string, the second selected number different from the first selected number. The method may include taking a measurement with the measurement tool at a third location. The method may include raising the drill string the length of the first selected number of tubular segments. The method may include removing the first selected number of tubular segments. The method may include taking a measurement with the measurement tool at a fourth location.

Method for altering locations of survey measurements along a borehole so as to increase measurement density

A heading transfer unit may be used to transfer a heading from a surface base to a MWD tool. The surface base may have a master north finder to determine a heading. The heading may be transferred to the heading transfer unit, which is in turn transferred to the MWD unit. The heading on the heading transfer unit is transferred to the MWD tool.

Device and method for surveying boreholes or orienting downhole assemblies

The present disclosure provides for a ranging and proximity detection system that includes a radiation source, the radiation source positioned within a first wellbore and a radiation detector positioned within a second wellbore.

Method for wellbore ranging and proximity detection

A method may include providing a drill string positioned in a wellbore including a measurement tool. The method may include taking a measurement with the measurement tool at a first location; coupling a pipe stand including a first selected number of tubular segments to the drill string, the first selected number being two or more; lowering or advancing the drill string into the wellbore the length of the pipe stand; taking a measurement with the measurement tool at a second location; raising the drill string the length of a tubular segment; removing a second selected number of tubular segments from the drill string; taking a measurement with the measurement tool at a third location; raising the drill string the length of the first selected number of tubular segments; removing the first selected number of tubular segments; and taking a measurement with the measurement tool at a fourth location.

Method for improving survey measurement density along a borehole

A method may include drilling a section of a first wellbore and casing a section of a first wellbore. The method may include lowering a downhole receiving system into the first wellbore to a first wellbore depth and drilling at least one section of a second wellbore. In addition, the method may include positioning an EM telemetry system in the at least one section of the second wellbore and transmitting an EM telemetry signal from the EM telemetry system. The method may include receiving the EM telemetry signal with the downhole receiving system.

Sub-surface electromagnetic telemetry systems and methods

A method for measuring two-phase mixture quality in a fluid may include providing a densitometer with a densitometer body, a resonator tine, a drive transducer, and a pickup transducer. The method may also include exposing the resonator tine to the fluid and oscillating the resonator tine with the drive transducer. In addition, the method may include measuring the oscillation of the resonator tine with the pickup transducer, and determining a density of the fluid based on the measured oscillation of the resonator tine. The method may also include determining a two-phase mixture quality based on the determined density.

High temperature densitometer device and steam quality measurement method and device

A method may include providing one or more telemetry transmission systems, the one or more transmission systems comprising one or more receivers and one or more transmitters. The method may also include transmitting a first synchronization sequence from the one or more telemetry transmission systems, the first synchronization sequence transmitted in a first channel, and the first synchronization sequence being at least a portion of a first telemetry signal. In addition, the method may include transmitting a second synchronization sequence the one or more telemetry transmission systems, the second synchronization sequence transmitted in a second channel, and the second synchronization sequence being at least a portion of a second telemetry signal. The first and second synchronization sequences may be transmitted simultaneously or at a predetermined time difference. The method may include receiving the first synchronization sequence at the one or more receivers, and receiving the second synchronization sequence at the one or more receivers.

Collaborative telemetry

A steering tool may include a tool body, gimbal body rotatably coupled to the tool body, and an angular positioning device to rotate the gimbal body relative to the tool body. One or more sensors may be coupled to the gimbal body. The sensors may be one or more gyros, accelerometers, and magnetometers. A gyro may be aligned with the axis of rotation of the gimbal body and may be used to detect rotation of the gimbal body. The detected rotation may be used to stabilize the gimbal body by using the angular positioning device. A gimbal toolface angle relative to a reference frame may be determined based on readings of one or more of the sensors. The gimbal body may be rotated to align with a reference position by the angular positioning device and rotated to one or more other gimbal toolface angles, at which sensor readings may be taken.

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Atascadero, CA, United States of America

Brian Daniel Gleason