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Ecoscope 2

Ecoscope 2

Last update 

Ecoscope 2

Items (18)

  • As standoff increases in light mud what_happens to the GR measurement?

    the density measured in the short spacing_detector will decrease more rapidly than the_long spacing as it has a shallower depth of_investigation_

  • How is the shape of a "rib" designed?

    The shape of the rib is characterized during_tool design so it is possible to determine the_density correction (delta p)

  • What would be an indication of excessive_standoff? And how should we handle it?

    large delta p values ( > .2g/cc)coresponding density data values should be_disregarded

  • What is the Ecoscope density RT range?

    0.9-3.44 g/cc

  • What does the Ecoscope tool do when the_measurement is outside it's range?

    send default value of 3.44 g/cc (even if it's_below the lower threshold value of 0.9 g/cc

  • Where can we find the Ecoscope QC flag_descriptions?

    In Ecoscope LQCRM

  • List the Drilling Dynamics measurements available:

    lat,axial,rot-shocks, N.B.INC, APWD (stat. & dynam.) US caliper (rot & slid)

  • How many accelerometers does ecoscope have, and what is their function?

    4 accelerometers, to measure the three types of shocks: Lateral, Axial, Torsional.

  • Describe how the near bit inclination measurement is done in EcoScope, and what is it's accuracy?

    The single axis accelerometer is mounted inside the EcoScope at a slight angle and also slightly off center, which means that an rpm correction needs to be applied to compensate for the slight angle at which the sensor is mounted<img src="DD02.PNG" />Above 45deg inclination, accuracy is ~0.1deg

  • How is the Near-bit INC. accelerometer calibrated?

    Calibration includes 4 horizontal measurements to correct for centrifugal force, and for sensor misalignment (sliding)Calibration has also _up-down gain/offset corrections.

  • Describe Static and Dynamic Pressure

    Dynamic pressure=with pumps on and MWD powerStatic pressure=with pumps off and no MWD power (RTC battery power instead)

  • Describe the APWD function in Ecoscope

    Sensor re-calibration every 2 yearspowered by RTC when MWD off.Static &_ Dynamic pressures recorded into memoryup to 24 hrs LOTStatic temp available in RT &_ RM (since Martina)_

  • List the Ecoscope drilling dynamics measurements

    4 accelerometers to measure the three types of shocks, one inclinomiter for Near Bit inclication, an APWD sensor for LOT and dynamic pressure measurements and up to two ultrasonic calipers for caliper measurements while rotating (at least one sensor present) and while sliding (2 Ultrasonic sensors required).

  • How is the near bit inclination measurement done in Ecoscope?

    The single axis accelerometer is mounted inside the EcoScope at a slight angle and also slightly off center, which means that an rpm correction needs to be applied to compensate for the slight angle at which the sensor is mountedCalibration includes 4 horizontal measurements to correct for centrifugal force, and for sensor misalignment (sliding)Calibration has also _up-down gain/offset corrections.Above 45deg inclination, accuracy is ~0.1deg

  • Can static APWD data be merged with circulating data?_

    Static measurement data can be merged with circulating data via ToolScope software see Intouch 5667074: ESD Recompute for EcoScope in MaxWell.

  • Describe the Ecoscope MVC, and what shock dpoints are we using?_

    3 ax. accel. measures voltage req'd to stabilize sensor package to static position. all sensors are perpendicular to each other

  • Describe the Ultrasonic caliper, and what is it's function?

    Ultrasonic hole _diameter when sliding and rotating can be provided. The caliper measurement is made by firing the two sensors simultaneously. as a result,._Ultrasonic sensors mounted on enlarged section of collar, although not on the stabilizer, less standoff. The reason they could not be placed on the stabilizer is due to space limitations.

  • What are the_Ultrasonic Caliper-Measurements?

    Average borehole diameter_16-sector average caliper (rotating only)_Vertical diameter (rotating only)_Horizontal diameter (rotating only)_Tool eccentricity (rotating only)Similar measurements to ADN except we can get Caliper while sliding and also 16 sector images instead of 8, whilst rotating.