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© 2012–2014 Weatherford. All rights reserved.  10139.01

Production LoggingCased Hole

 Spinner Array Tool

The Weatherford Spinner Array Tool (SAT) has six miniature impellers

deployed on bow-spring arms, enabling discrete local uid velocities to be

measured at 60-degree intervals around the wellbore. The SAT provides

direct measurement of individual phase velocities. Combining SAT data

with holdup data from the Resistance Array Tool (RAT) and the Capacitance

 Array Tool (CAT) provides quantitative estimates of the volumetric ow rate

of each phase with a much higher degree of certainty and thus provides

vital information for reservoir management.

The SAT outputs the direction and speed of spinner rotation, and a relative

bearing measurement is incorporated to indicate the high side of the well.

MAPview software uses data from the SAT to present three-dimensional

imaging of the velocity prole.

• Fluid-velocity measurements in deviated or horizontal wellbores as

part of a production prole

 Applications

• Cross-sectional velocity proling provides phase velocities in segregated

uid streams for deviated and horizontal wells.

• The SAT can be deployed by multiple conveyance methods, and SAT

data is available at the surface and from memory. This exibility enables

using the most cost-effective deployment method.

• The SAT enables simultaneous operation with Sondex™ and Ultrawire™ 

tools that measure other aspects of the ow stream, such as uid makeup

at the same time as the uid velocity. This ensures that all measurements

are obtained at the same time for a more accurate ow prole.

• The turbines use low-friction jeweled bearings to reduce the mechanical

threshold of the spinner and improve sensitivity to uid ow.

Features, Advantages, and Benefts

Sondex and Ultrawire are trademarks of the General Electric Company.

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 Specifcations

Measurement specifcations 

Model SAT004 SAT005

Pipe range Up to 7 in. (177.8 mm) casing

Sensor measurement point 16.5 in. (419 mm)

Relative bearing accuracy 5º

Relative bearing deviation range 5º to 175º

Number of sensors 6

Mechanical specifcations 

Outer diameter  1.72 in. (43.69 mm) 2.125 in. (53.98 mm)

Spinner diameter  0.4 in. (10.16 mm) 0.6 in. (15.24 mm)

Length 45.5 in. (1,156 mm)

Total weight (in air) 17.2 lb (7.8 kg)

Maximum pressure 15,000 psi (103.4 MPa)

Maximum temperature 350°F (177°C)

Current consumption 25 mA

Materials Corrosion-resistant

Toolbus Ultrawire

© 2012–2014 Weatherford. All rights reserved. 10139.01

Production LoggingCased Hole

 Spinner Array Tool 

Weatherford products and services are subject to the Company’s standard terms and conditions, available on request or at weatherford.com. For more information contact an authorized Weatherford representative.

Unless noted otherwise, trademarks and service marks herein are the property of Weatherford and may be registered in the United States and/or other countries. Weatherford products named herein may be

protected by one or more U.S. and/or foreign patents. Specications are subject to change without notice. Weatherford sells its products and services in accordance with the terms and conditions set forth in the

applicable contract between Weatherford and the client.

Tool drawings and specications provided by GE Oil & Gas.

 Specifcations