Rotary Pulser
Fixed-mount or Retrievable Positive Mud Pulse Transmitter
Measure
Communicate
Act
MWD/LWD Sensors, Telemetry
& Surface Systems
Fixed-mount
Pulser
APS Technologys patented Rotary Pulser* is the toughest, most advanced mud pulse
transmitter in the industry. Our Rotary Pulser chews through LCM content which
would choke any other pulser, over a wide range of mud weights and conditions.
APSs commitment to continuous improvement has increased reliability and decreased
power consumption in our pulser. Recent improvements include an ultra-reliable,
high-efficiency DC brushless motor and controller which can run thousands of hours
without a failure. The motor/controller combo is 30% more efficient when pulsing and
consumes 1/3 the quiescent power of the previous generation. Other improvements
include more durable shafts and seals, and better serviceability.
The APS Rotary Pulser is designed to operate with batteries or with the APS Turbine
Alternator. It offers a reliable, economical alternative to pulsers from other OEMs.
Crossovers to other popular MWD systems are available, or can be custom-designed.
All materials are highly wear-resistant to provide exceptional reliability and service life
in demanding drilling environments.
Features
Retrievable
Pulser with
Stinger
Advantages
Benefits
New DC brushless
motor
> Increased reliability
> Improved power
consumption
> Improved MTBF
> Works with 8 DD cell (28v)
and 10 DD cell (36v) systems
Oscillating rotary
motion
> Self-clearing
> Low shaft speed
> Reliable operation with high
LCM concentrations
> Improved seal reliability / life
Open flow path
> No screens to plug
> Enhanced reliability in wells
with poor solids control
Direct-drive magnetic > Rugged drive train
coupling
> No rotating seals in mud
Tungsten carbide
flow surfaces
> Superior fluid erosion
properties
> Enhanced service reliability
> Reduced service cost
> Extended component life
> Reduced service cost
Adjustable pulse
> Adaptable to all flow rates, > Extends the range of reliable
width and magnitude
depths and mud weights
operation
Wide range of
pulser sizes for
3.125 in. (79 mm) to
9.5 in. (241 mm) or
larger BHAs
> Easily convertible
between sizes, and
between fixed-mount
or retrievable
configurations
> Reliable operation in any
hole size
> Reduced inventory
Retrievable or fixedmount options
> Basic design and
construction are
consistent without
regard to configurations
> Adaptable to fit customer
needs
> Reliable service in all
configurations
* U.S. Patents #6,714,138 and #7,327,634
www.aps-tech.com
U.S. Patent #7,201,239
TECHNICAL DATA SHEET
Rotary Pulser
Fixed-mount or Retrievable Positive Mud Pulse Transmitter
Measure
Communicate
Product Specifications
Act
MWD/LWD Sensors, Telemetry
& Surface Systems
Signal Transmission
Positive mud pulse
Pulse Height
Adjustable
Retrievable/Reseatable
Available
Fixed Mount
Available
Activation
Electromechanical
Operating Voltage
Pulser Sub O.D.
28 - 40 VDC
9.5, 8, 6.25 to
6.75, 4.75, 3.5 & 3.125 in.**
241, 203, 159 to
171,121, 89 & 79 mm**
Flow Ranges
(8.4 ppg mud)
9.5 in. or larger 650 to 1200 gpm 241 mm or larger 41 to 76 L/sec
8 in. 300 to 1100 gpm
203 mm 19 to 69 L/sec
6.25 to 6.75 in. 150 to 750 gpm
159 to 171 mm 9 to 47 L/sec
4.75 in. 150 to 350 gpm
121 mm 9 to 22 L/sec
3.125 & 3.5 in. 70 to 250 gpm
79 & 89 mm 4 to 16 L/sec
Sand Content
< 1% by volume recommended, 3% by volume maximum
LCM Tolerance
Operating
Temperature
Maximum Pressure
50 lb. per bbl medium nut plug
143 kg/m3 medium nut plug
-13 to 302F; 347F option
-25 to 150C; 175C option
20,000 psi; 25,000 psi option
137.9 MPa; 172.4 MPa option
Differential Pressure
No requirement
Dogleg Capability
API connection limited
* Specifications subject to change without notice
Larger O.D. subs can be accommodated using the pulser for 9.5 in. (241 mm) O.D.
** Pulsers for 3.125 in. (79 mm) & 3.5 in. (89 mm) BHAs are available in fixed-mount only
Fixed-mount Pulser
Valve
Assembly
Flow
Sub
Mechanical
Assembly
Motion Control
Module
Flow Stat
Molded
Centralizer
Assembly
Headquarters Wallingford USA
7 Laser Lane, Wallingford, CT 06492 USA
Phone: 860-613-4450 Fax: 203-284-7428
contact@aps-tech.com
Houston USA
15415 International Plaza Dr., Suite #150
Houston, TX 77032 USA
Phone: 281-847-3700
Stinger and
Muleshoe Assembly
Mechanical Assembly
and Fin Cutter
Retrievable Pulser
Rev. 140425-vC.02
Specifications subject to change without notice.
APS Technology, Inc. 2014
www.aps-tech.com
TECHNICAL DATA SHEET
