IOM-35A Specification Sheet

 

IOM-35A - Integrated Orientation Module

 

 

The IOM-35A is the latest in a series of high accuracy Orientation Modules from Azimuth. It incorporates a full processing unit to provide fully corrected and computed results in an easy-to-use manner for the customer.

 

The sensor utilises a proprietary flux-gate magnetometer design and high grade quartz-hinge accelerometers for excellent precision and stability. High reliability electronics packaging and printed circuit board mounting, provide an extremely robust instrumentation assembly with industry leading performance.

 

The unit communicates through a simple serial TTL/CMOS or RS485 interface using a proprietary protocol, which can be easily configured to provide the appropriate data as required by the customer. A single polarity power supply, operating across a wide voltage range, further simplifies the integration of this module into the customer’s MWD/LWD system.

 

The Orientation Module is designed for extreme downhole oilfield environments, qualified for high temperature and drilling shock and vibration levels - designed for reliability under the most demanding of environments.

 

 

   
     

Features

 

  • Integrated microprocessor and fully computed
    angles
  • Low power consumption
  • Proprietary serial communications protocol
  • Robust and reliable assembly
  • Programmable communications protocol
  • Mechanical and electrical interfaces engineered to suit application
  • INC, AZI, TF, MTF, Temp, Gt, Ht, RPM and Rotation detection

Applications


  • MWD/LWD Borehole Surveying
  • Direct replacement of existing sensors
  • OEM implementation in LWD systems
  • Wireline directional surveying

Benefits

 

  • Increased accuracy and stability
  • Highly integrated and robust assembly
  • Custom options
  • Experienced and dedicated support team
  • Collaborative approach to meet customers’ needs
   
         
     

Description

Value

Units

Comments

Sensor Performance

Inclination Accuracy

+/-0.1

Deg

 

Inclination Repeatability

+/-0.05

Deg

 

TF/Rotation at >5º Inc - Accuracy

+/-0.5

Deg

 

TF/Rotation at >5º Inc - Repeatability

+/-0.05

Deg

 

Azimuth at >5º Inc - Accuracy

+/-1.0

Deg

 

Azimuth at >5º Inc - Repeatability

+/-0.5

Deg

 

Dynamic Magnetic TF

+/-5.0

Deg

 

Electrical

Operating Voltage

+12 to +40

Volts

 

Active Power Consumption

<2.0

Watts

 

Accelerometer Scale
Magnetometer Scale

3.0

2.5

V/g

V/Gauss

 

ADC Resolution

24

Bit

 

Interface

Serial TTL/CMOS/RS485

 

 

Baud Rate

9600

Baud

 

Protocol

Proprietary – Master/Slave

 

 

Output

Computed or Raw

 

 

Environmental

Operating Temperature

IOM-35A-150

 

-25 to 150

DegC

 

-13 to 302

DegF

 

IOM-35A-175

 

-25 to 175

DegC

 

-13 to 347

DegF

 

Survival Temperature

IOM-35A-150

-40 to 165

DegC

 

-40 to 329

DegF

 

IOM-35A-175

 

-40 to 185

DegC

 

-40 to 365

DegF

 

Vibration

30

gpk

50 – 1000Hz

20

g rms

50 – 1000Hz

Shock

1000

g

0.5mS Half Sine

Notes

 

 

 

1. Independent Magnetometer/Accelerometer power control
2. 9600 Baud default, programmable to other rates

   
                         
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  Azimuth Oilfield
Systems Ltd.

Unit 12, Airways Industrial Estate, Pitmedden Road,
Dyce, Aberdeen,
AB21 0DT,
United Kingdom

T. +44 (0)1224 773635
F. +44 (0)1224 729988
E. info@azimuthmwd.com
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