Dual Telemetry EM and Mud Pulse MWD System

Dual Telemetry EM and Mud Pulse MWD System

Specifications

Operating Temperature :
0–150°C (32–302°F)
Shock Rating :
1000 g
Power Consumption :
10 mA at 28 V
Telemetry :
EM and Mud Pulse
Data Transmission Speed :
up to 4 times faster than conventional mud pulse
Logging Data Transmission :
4.5 seconds or less
Communication :
Two-way EM communication
Tool Configuration :
Fully retrievable
Memory :
Recordable measurements
Telemetry Switching :
Selectable between EM and Mud Pulse

Description

The high-speed EM telemetry delivers real-time data at speeds four times faster than conventional mud pulse. Operators can make better decisions using more information without reducing ROP.

With two-way electromagnetic communication, the operator can downlink commands to the tool. The EM transmitter can be paired with a mud pulser in one string to provide dual telemetry. The EM MWD system can transmit high-resolution data from all PDT sensors at a reliable high speed. Signal-decoding technology filters noise from the transmission.

 

Applications

  • Conventional and underbalanced drilling.
  • Air drilling.
  • Coiled tubing drilling.
  • Lost circulation.
  • Coal bed methane and coal seam gas.
  • Mining and degasification.

 

Features & Benefits

  • Higher noise resilience for better detection.
  • Memory-recordable measurements.
  • Fully retrievable.
  • Survey during connection.
  • Logging data can be transmitted in 4.5 seconds or less.
  • Software can discriminate signal in noisy environments.
  • Selectable between EM and Mud Pulse.

 

Software

  • All-in-one software package with M-ary and Fast Pulse.
  • Switches between telemetry methods seamlessly.
  • Downlink between EM and Mud Pulse.
  • Switch sequences between sliding and rotary.
  • Survey and Logging frames can be selectable between telemetry methods, either mud pulse or EM, or both.

 

Gap Subs

Gap Sub Connection3.5 IF, XT394.5 XH, 4.5 IF, XT466 5/8 Reg
Gap Sub Torque9,900 lbf·ft22,500 lbf·ft47,000 lbf·ft
Gap Sub Yield Strength18,090 lbf·ft34,020 lbf·ft83,380 lbf·ft
Max. Dogleg Sliding28°/30 m (100 ft)20°/30 m (100 ft)12°/30 m (100 ft)
Max. Dogleg Rotating12°/30 m (100 ft)10°/30 m (100 ft)7°/30 m (100 ft)