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.
SureShot-EM Technical Data Sheet
|Data Rate||1 to 12 bps uncompressed; selectable|
|Power Output||2 to 50 W, selectable|
|Power Source||2 - 4x 10 DD lithium battery or
APS Turbine Alternator + 1x 10 DD lithium battery
|Downlink Methods||EM and flow|
|Downlink-adjustable Parameters||Data Rate
|Operating Frequency||2 to 12 Hz; selectable|
|Collar OD||8.0 in.
6.75 / 6.50 in.
172 / 165 mm
|Flow Rate Limits||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
|Sand Content||< 1% by volume recommended|
|Operating Temperature||-13˚ to 302˚F||-25˚ to 150˚C|
|Maximum Pressure||20,000 psi||138 MPa|
|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|
|Available Platforms||Fixed-mount or retrievable|
Battery and PWD
Turbine, battery and PWD
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 receiver, downlink transmitter, laptop, rig floor display|
|Depth Options||WITS, SureShot Depth Tracker, SIU 1 or SIU 2|
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