Tools
Surefire is a real-time MWD survey tool designed to provide unmanned
monitoring of wellbore deviation. It provides an intermediate
solution between time consuming and inaccurate wireline survey tools
and expensive steerable MWD systems.
| Specifications | |
|---|---|
|
Data Transmission Type |
Positive Mud Pulse |
| Available Tool Sizes | 4.75" (122mm) with 3 1/2" IF, 150-350gpm 8.00" (203mm) with 6 5/8" Reg, 400-750gpm |
|
Nominal Length |
8 ft |
|
Power Supply |
Lithium Thionyl-Chloride High Temperature Batteries |
|
Shock Limit / Vibration Limit |
1000g, 0.5ms / 20G RMS Random 50-500Hz |
|
Operating Temperature |
32 ° to 302 ° F |
|
Survival Temperature |
-40 ° to 329 ° F |
|
Hydrostatic Pressure (max) |
15,000psi |
|
Pressure Drop |
~50psi @ 350 gpm water |
|
LCM Tolerance (max) |
60-80 ppb medium nut plug, premixed |
|
Sand Content |
<5%, <2% optimal |
|
Inclination Sensor Accuracy / Repeatability |
± 0.2 ° / ± 0.05 ° |
|
Data Telemetered |
|
|
Survey Procedure |
Pumps off for 60 seconds, Pumps
on for 3 |
| Angle Range/ Resolution | 0°- 6° / 0.1° 6°- 16° / 0.25° 16°- 29.5° / 0.5° |
|
System Health Data |
tgf, Battery Hours Remaining,Tool Temperature |
Built around a proprietary mud pulser, high shock rated solid state
sensors and rugged control electronics, the Surefire Angle Only
Survey Tool provides a robust and cost effective surveying option
for vertical wellbores. It dramatically reduces survey times when
compared to wireline or memory survey tools and maximizes useable
rig time in drilling operations.
The Surefire Angle Only Survey Tool implements a high torque, high wear rotary shear valve and provides increased reliability and durability in contaminated mud systems. It also has significantly superior tolerance to LCM and solids when compared to conventional pulser designs that utilize small screens and inlets which are susceptible to blockages.
Unlike other currently available survey tools which only transmit wellbore inclination to the
surface, the Surefire Angle Only Survey Tool also provides Total Gravity Field values drastically
reducing the risk of bad surveys. System health parameters such as downhole tool temperature
and tool battery life are also transmitted. Surveys are initiated by simply cycling the mud
pumps off and on. The total survey time is less than 3 minutes.
Data telemetered from the downhole tool is decoded and displayed automatically by the Surefire
Surface System.
The Surefire Surface System has a small footprint and integrates easily into
the crowded workplace in the dog house. It is touchscreen enabled and features an easy to use
interface that can be mastered in minutes. The driller can view real-time graphs of pressure data
and filtered pulse data, and can also visualize the wellbore using inclination plots and maximum
departure curves.
The Surefire Surface System has extensive data logging and report generation capabilities.
Survey reports can be exported using the built in USB port in PDF and CSV formats.
The Surefire Angle Only Survey System is logistically friendly and ships ready to run in an 8 ft
drill collar. The entire system can be installed, initialized and operational in less than 30 minutes.
Click here to view the Surefire information in a detailed and print-friendly brochure format (.pdf).