2. Schlumberger-Private
What is
MUZIC
Muzic is a wireless acoustic telemetry system for
Well Testing applications.
• Muzic enable communication between
downhole and surface using an acoustic
signal traveling along the DST String.
• Muzic provide real time bi-directional
communication, real time downhole data
acquisition at surface
• Muzic enable controlling downhole
equipment.
3. Schlumberger-Private
What is
MUZIC
MUZIC system is a network of repeaters deployed
along the Drill Stem Test (DST):
• Repeaters play the role of an interface between the
equipment and the surface computer.
• Repeaters receive data from sensors or commands
from the host computer and forward them to the
equipment.
• Repeaters at the top and middle part of the DST
string, are specialized for data communication
between them and up to the surface computer.
• Repeaters at the bottom part of the DST string, are
associated with sensors, valves, samplers and firing
head.
5. Schlumberger-Private
Why Muzic
• Real-time telemetry throughout the test duration allows
the operator to be certain of operation status and
facilitate efficient decision making by providing real-time
understanding of reservoir dynamics.
• Deepwater operations and associated costs make the risks
of cables in hole (cut cables, fishing operations)
unacceptable from a client standpoint. Wireless telemetry
eliminates this risk.
• Wireless telemetry facilitates a relatively risk-free
acquisition of data during the complete test including
flowing periods and not only the build-up.
• The use of wireless telemetry to control and confirm status
of downhole equipment will be a key in differentiating the
application of wireless telemetry for DST operations. This
feature will position Wireless Telemetry as a key enabler for
multi-zone Testing applications.
6. Schlumberger-Private
How MUZIC
Works
• A vibration is generated at one location on the pipe with
a modulation coding the information to be sent. This step
is called the transmission (TX).
• The acoustic wave travels along the pipe to another
location with a receiver. The receiver decodes the
received signal and transforms it back to digital
information. This step is called reception (RX).
• Both the TX and RX function incorporated in a Muzic
generic tool called Repeater.
• Repeater processes a signal traveling on the pipe and
sends it again with a higher power up to the next
Repeater, either in the direction of the surface or
downhole.
• A clamp-on Repeater set is called a Communication
Node.
7. Schlumberger-Private
How MUZIC
Works
• A network of Communication Nodes moves
information between downhole and surface,
• Each Node relays the information on the DST
String to its neighboring Nodes.
• Long hop is communication between downhole
and surface. Long hop communication is done
through a linear network of Nodes clamped on
the outside of the pipe.
• Short hop is communication within the BHA.
8. Schlumberger-Private
Communication Node.
• Communication Node = A set of repeaters – normally 2 repeaters
• Communication Nodes are clamp-on outside of DST pipes
• 1000 ft is the max distance between Communication Nodes in Major
String
9. Schlumberger-Private
Acoustic Repeater
• Repeater = Modem (acoustic sensor + electronics board) + Batteries.
• Repeater can be stand-alone communication node (long hop) to relay
information to the node above and below it.
• Repeater can be interfaced or integrated in other tools (short hop)
10. Schlumberger-Private
Modem = acoustic sensor +
electronics board
• Acoustic sensor uses a piezoelectric sensor
and can both generate and receive an
acoustic signal.
• Electronics board includes the transmission
(TX) and receiving (RX) functions
• In TX mode, the electronics drives the
piezo sensor to generate an acoustic
signal. The acoustic signal is modulated
to code the digital information to be
sent.
• In RX mode, the electronics processes
the signal generated at the transducer
output, digitizes it and performs signal
processing to retrieve the digital
information.
11. Schlumberger-Private
ELECTRONICS BOARD
DIAGRAM
The I/O includes two types of interfaces: A two wires differential RS485 and a
one-wire serial link.
The RS485 interface is used to:
• Manage the communication in-between repeaters when two repeaters
are configured as twins in a communication node.
• As a Read-Out Port (ROP) to configure the tools at the surface.
• To interface with external devices that are queried or controlled by
Muzic.
For most modems:
• The RS485 interface is available on the Piezo sensor side. The Piezo
sensor has a coaxial connector connected to the RS485.
• A Triaxial male connector is mounted on the other side at the end of the
electronics chassis. It is used for the connection to the batteries and for
1-Wire communication.
12. Schlumberger-Private
Battery
• All Muzic downhole equipment are battery powered.
• Batteries are a critical part of system performance.
• New battery packs have been developed with improved performances:
• The legacy packs were developed using Low Rate cells and were a derivation of the
battery technology used with Unigauges.
• The new packs are developed using Medium Rate cells. This new technology offers
more stable performances at high temperature. The new pack are also slimmer.
• Testing Services DDA Batteries Compatibility Matrix
• http://intouchsupport.com/index.cfm?
event=content.preview&contentid=7180840
13. Schlumberger-Private
Network Toplology
• End nodes = Muzic Enabled
Equipment
• An end node cannot repeat an
acoustic message since it is only
capable of answering to
messages addressed to it.
• A hub is a node that allows
access the subnetwork (cluster)
from the main network.
15. Schlumberger-Private
Muzic hub node
• A hub is a node that allows access the subnetwork (cluster) from the main
network.
• A cluster or subnetwork = at least 2 successive nodes (hubs) + at least one
Interface node
• The aim of the hub node is to save battery
16. Schlumberger-Private
MAC
Muzic Acquisition Computer
• Discover and maintain network discovery
• Acquire and export data.
• Control downhole equipment through
wireless commands.
• Does not include advanced publication
features. Data publication is done through
Helios. Helios also allows real time data
streaming through Interact.
18. Schlumberger-Private
Muzic
Systems
Muzic 150+ is designed to operate up to
150 degC [302 degF] and 18000 psi
[1240 bar]. It can be operated in certain
configurations up to 165 degC [329
degF] with a specific post-job
maintenance procedure.
Muzic HT is the latest version. It is
designed to operate up to 200 degC [392
degF] and 30000 psi [2068 bar].
Muzic HT keeps the same core
functionalities as Muzic 150+ and adds
some new ones (better power
management)
Muzic HT power consumption has been
very significantly improved compare to
Muzic 150+, leading to an extended
operating time for a given battery
configuration.
Muzic HT electronics is designed around
a Multi Chips Module (MCM)
technology. Like the Signature Gauge,
the Muzic HT electronics section is
permanently sealed and welded with no
maintenance until the tool End of Life.
Muizc HT is fully compatible with
existing Muzic 150 equipment. The only
difference is with the length of some
part. Adapters are provided for
compatibility.
Maintenance is simplified on Muzic HT
as the electronic section is sealed.
Muzic 150+ and Muzic HT have been
designed so that Muzic string can mix
both versions.
Muzic HT and Muzic 150 should not be
mixed in the same node
24. Schlumberger-Private
How MAC work with Helios
• https://intouchsupport.com/index.cfm?event=content.preview&cont
entId=6981906&FromRefPage=Y
Editor's Notes
#6:A repeater set includes 1 to 2 repeaters.
In practice, the acoustic transmission on a DST String is complex. The attenuation strongly depends on communication parameters. Overall, it is difficult to propagate an acoustic wave across several tens of thousands of feet. Propagation in one shot would require complex downhole high-power transmitter.
#7:The BHA includes Signature Quartz pressure gauges mounted on a Gauge carrier, Testing Dual Valves (IRDV), downhole fluid samplers and eFire-TCP Firing Head.
#8:103054845 MZHTR MUZIC REPEATER, HIGH TEMPERATURE, SEVERE SERVICE
100983039 MZRM-B MZRM-B MUZIC REPEATER MODEM
#10:103054845 MZHTR MUZIC REPEATER, HIGH TEMPERATURE, SEVERE SERVICE
100983039 MZRM-B MZRM-B MUZIC REPEATER MODEM
There are five modem configurations used for Muzic:
• A rig floor modem.
• A subsea modem.
• An intervention modem (called Master modem).
• A repeater modems.
• An end node modem
An acoustic Piezoelectric sensor.Piezoelectric sensor can be used for both the generation and reception of an acoustic signal on the tubing. The sensor has been designed to operate at high temperature and for operation in harsh environment.
• The Electronics board.The electronics board is the heart of the modem. All the signal processing required to transmit and receive the signal is embedded in the board. It is also managing the interface with the acoustic sensor as well as the interface with external devices (sensors, valves, etc.).A high level schematic of the electronics is given in Figure 2-9: Electronics functional block diagram. The electronics include:
• The digital core in charge of tool control, signal processing, etc.
• The reception front-end for the conditioning and digitalization of the acoustic signal.
• The transmission front-end driving the Piezo.
• The power supply to interface batteries with the electronics.
• The I/O interfaces.
• The journal and configuration memory.
#11:The I/O includes two types of interfaces: A two wires differential RS485 and a one-wire serial link.The RS485 interface is used to:
• Manage the communication in-between repeaters when two repeaters are configured as twins in a communication node.
• As a Read-Out Port (ROP) to configure the tools at the surface.
• To interface with external devices that are queried or controlled by Muzic.
• For most modems:
• The RS485 interface is available on the Piezo sensor side. The Piezo sensor has a coaxial connector connected to the RS485.
• A Triaxial male connector is mounted on the other side at the end of the electronics chassis. It is used for the connection to the batteries and for 1-Wire communication.
#14:Signature Gauges
IRDV
Sampler SCAR-M
Sampler SCAR MTH
Sliding Sleeve
Firing Head E-fire
Gamma Ray Positioning Tool (GRPT)
![Schlumberger-Private
Muzic
Systems
Muzic 150+ is designed to operate up to
150 degC [302 degF] and 18000 psi
[1240 bar]. It can be operated in certain
configurations up to 165 degC [329
degF] with a specific post-job
maintenance procedure.
Muzic HT is the latest version. It is
designed to operate up to 200 degC [392
degF] and 30000 psi [2068 bar].
Muzic HT keeps the same core
functionalities as Muzic 150+ and adds
some new ones (better power
management)
Muzic HT power consumption has been
very significantly improved compare to
Muzic 150+, leading to an extended
operating time for a given battery
configuration.
Muzic HT electronics is designed around
a Multi Chips Module (MCM)
technology. Like the Signature Gauge,
the Muzic HT electronics section is
permanently sealed and welded with no
maintenance until the tool End of Life.
Muizc HT is fully compatible with
existing Muzic 150 equipment. The only
difference is with the length of some
part. Adapters are provided for
compatibility.
Maintenance is simplified on Muzic HT
as the electronic section is sealed.
Muzic 150+ and Muzic HT have been
designed so that Muzic string can mix
both versions.
Muzic HT and Muzic 150 should not be
mixed in the same node](https://image.slidesharecdn.com/understandingmuzicconcepts-250717211053-b25950ed/85/Understanding_Wireless_Telemet_Concepts_-18-320.jpg)
