Advanced Oil Detection Technology

Telemetry FHT

The Fast Hybrid Telemetry (FHT) links the surface panel and downhole sensors via half-duplex communications. It’s the fastest telemetry in its class, with a Wireline Bus (WLB) up to 400 kbps for cased hole (up to 800 kbps for open hole) and an internal One-Wire Hybrid Bus (OWB) at 1.5 Mbps. FHT can interleave analog packets with digital ones, supports Warrior (SDS), and offers Version A (up to 120 kbps / 500 kbps) and Version B (up to 400 kbps / 1.5 Mbps).

ENGRD Fullbore Spinner
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Injection Flow
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Production Flow
Electronics Housing
Three-arm Spinner
Spring-Loaded Cage
Uplink Speed
400 / 800 kbps
Internal Bus
1.5 Mbps
Operating Range
350°F (177°C)
Technical Excellence

SPECIFICATIONS

The Fast Hybrid Telemetry (FHT) is a half-duplex system that links surface panels and downhole tools. It supports analog packet interleaving, high-speed uplink, and an internal hybrid bus. Version A: up to 120 kbps uplink / 500 kbps internal. Version B: up to 400 kbps uplink / 1.5 Mbps internal. Compatible with Scientific Data Systems Warrior software.

Fastest Telemetry

Up to 400 kbps (cased) / 800 kbps (open) and 1.5 Mbps internal bus.

Hybrid Analog + Digital

Interleaves analog packets between digital frames for mixed strings.

Versions A & B

A: 120 kbps / 500 kbps • B: 400 kbps / 1.5 Mbps.

Communication & Buses

Mode Half duplex (parity & checksum)
Wireline Bus (Cased) Uplink 60–400 kbps • Downlink 5 kbps
Wireline Bus (Open Hole) Uplink 120–800 kbps • Downlink 5 kbps
Internal Bus (OWB) 1.5 Mbps
Analog Interleave Analog packets between digital

Operating & Electrical

Temperature Rating 177°C (350°F)
Pressure Rating 17,000 psi (117.2 MPa)
Tool Head Voltage 70–300 VDC
Hybrid Bus Power Up to 5 A @ 18–70 VDC (shunt option 2 A)
Cable Types 7/32″, 5/16″, 7/16″, 9/32″; H₂S & open-hole
Supported Tools Cased & open hole

Data, Interfaces & Physical

Sampling Min 1 μs; per-sensor multi-rate
Equalization Analog + digital adaptive
Error Handling Data & frame error detection; discard on corruption
Tool Protocols SPI, USB, Analog BUS, 1553, CAN, I²C, RS-232, RS-485, Ethernet
Memory 32 GB per sensor; retrievable RT or standalone
Dimensions 1-11/16″ (43 mm) O.D. × 27″ (685.8 mm)
Compatibility Warrior (SDS); analog & memory tools compatible