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The Fast Hybrid Telemetry (FHT) is the most important component on a cased hole logging system, is the link between the surface panel and the rest of sensors connected below via a Half Duplex communication. The FHT is the fastest telemetry in the market with a Wireline Bus (WLB) of up to 400Kbps and an Internal Bus (OWB) of 1.5Mbps.
The FHT can uplink analog packages in between digital packages so you have the option to combine different types of tools on the string.
FHT can be use with Scientific Data Systems panels and their software Warrior.
Version “A” is the most basic configuration with an uplink of up to 120kbps and an internal Bus of 500kbps.
Version “B” is the most powerful configuration with an uplink of up to 400kbps and an internal Bus of 1.5Mbps.
|Communication||Half Duplex with parity control and checksum|
for Cased Hole
Uplink 60Kbps to 400Kbps
for Open Hole
Uplink 120kbps to 800Kbps
|One Wire Hybrid Bus (Internal Bus)||1.5Mbps|
Tool Head Voltage
70VDC - 300VDC
177 deg C / 350 deg F
117.2 MPa / 17,000 psi
Tool Power Hybrid Bus up to 5Amps @ 18VDC to 70VDC for tool string, shunt regulator option is available for 2Amps
Type of cables
7/32”, 5/16”, 7/16”, 9/32" - H2S and Open hole cables
Type of tools supported
Cased hole and Open hole
1-11/16” (43mm) O.D. by 27” (685.8mm) Long
Memory minimum sampling rate
each sensor can have different sampling rate
the signal is retrieve through an analog equalizer and a digital equalizer all done through an adaptive system
the system offers error data and frame error data. In case the data get corrupted, it will be discarded
the telemetry can use the following protocols to communicate with different tools:
in addition the telemetry have a 32GB internal memory per sensor. The system offers the flexibility to retrieve the data from the memory in real time or memory mode as a stand alone memory tool