SureShot-EM

ELECTROMAGNETIC TELEMETRY MWD SYSTEM

The APS SureShot™ EM telemetry MWD system communicates by transmitting electromagnetic waves through the formation instead of pressure pulses through a fluid column. Benefits include time saved by transmitting surveys during a connection, high data rates and the ability to operate in conditions where mud pulse telemetry cannot.

SureShot EM is compatible with all APS downhole sensors. The electromagnetic transmitter uses the same flow subs and is a drop-in alternative for the mud pulse transmitter, having many parts in common with the SureShot mud pulse MWD system. Operators benefit from reduced inventory cost and increased flexibility when providing a mix of EM and mud pulse MWD services.

SureShot EM is a state-of-the art system with a downhole tool featuring two-way electromagnetic communication. The sequence and frequency of transmitted measurements is EM downlink selectable. Whether it’s a higher density log to pick a casing point, more pressure measurements for drilling optimization or emphasis on directional measurements while sliding, SureShot EM enables the operator to quickly choose the optimum data sequence for the drilling operation.

SureShot EM works with all APS downhole sensors. The EM transmitter uses the same flow subs and is a drop-in alternative for the mud pulse transmitter, having many parts in common with the SureShot mud pulse system. Operators benefit from reduced inventory cost and increased flexibility when providing a mix of EM and mud pulse MWD services.

Download Technical Data Sheets

SureShot-EM allows the operator to choose the right mix of directional, LWD and pressure measurements for any drilling situation.

  • Data rates up to 12 bps.
  • High-power 50 W transmitter for two-way EM communication.
  • Downhole selectable data sequences – choose the optimum combination of directional, LWD and pressure measurements for the drilling operation.
  • EM Downlinking – Quickly adjust power, bit rate, carrier frequency and telemetry sequences for the conditions.
  • Plug-and-play compatibility with APS SureShot downhole and surface equipment.
  • Operates with batteries or turbine alternator for extended bit runs and high current draw applications.
  • Unique rugged, reliable dual gap sub.
  • WPR™ resistivity compatible.
  • Fixed-mount and retrievable configurations are available.
  • Depth tracking options include the SureShot Depth Tracker, the SureShot mud pulse SIU and WITS.

  • Quad-channel digital surface receiver to rapidly select the best signal from among 4 antenna pairs as the well progresses.
  • Gap sub is a dual-gap design for added reliability.
  • Ceramic sleeves prevent loss of power due to arcing.
  • No coating to wear and arc.
  • Dual insulator rings for greater reliability.
  • Higher power to the formation due to gap distance.

  • High ROP drilling with frequent surveys
  • High data density LWD and drilling optimization applications
  • Underbalanced drilling
  • Foam and air drilling
  • Extreme lost circulation conditions

TOOL SPECIFICATIONS

Downhole Transceiver
Data Rate 1 to 12 bps uncompressed; selectable
Power Output 2 to 50 W, selectable
Power Source 2 – 4x 10 DD lithium battery or
Downlink Methods APS Turbine Alternator + 1x 10 DD lithium battery
Downlink-adjustable Parameters EM and flow
Data Rate
Power Output
Operating Frequency
Data/Survey Sequences
Survey-on-command
Operating Frequency 2 to 12 Hz; selectable
Collar OD 8.0 in.
6.75 / 6.50 in.
4.75 in.
204 mm
172 / 165 mm
121 mm
Flow Rate Limits Operating Frequency
Sand Content 8.0 in. – 300 to 1100 gpm
6.75 / 6.50 in. – 150 to 750 gpm
4.75 in. – 125 to 350 gpm
203 mm – 19 to 69 L/sec
171 / 165 mm – 9 to 47 L/sec
121 mm – 7.9 to 22 L/sec
< 1% by volume recommended
-13˚ to 302˚F 138 MPa
Surface System
Operating Temperature 32˚ to 158˚F 0˚ to 70˚C
Storage Temperature 14˚ to 185˚F -10˚ to 85˚C
Surface Sensors Depth encoder, hookload, standpipe pressure
SureShot MWD with EM
Downhole Configurations
Available Platforms Fixed-mount or retrievable
Fixed-mount System Battery
Battery and PWD
Turbine, battery and PWD
Retrievable System Battery
Battery and PWD
Available Sensors Directional, gamma, vibration, WPR, annular and bore pressure
Length Equal to mud pulse transmitter; 30 – 31 ft for DGMWD collar
Surface System
Surface System Surface receiver, downlink transmitter, laptop, rig floor display
Depth Options WITS, SureShot Depth Tracker, SIU 1 or SIU 2