Apollo MWD System
Fulfill the telemetry needs of challenging wells by providing reliable and faster data transmission to optimize drilling
Capable of running as ‘directional only’ as well as ‘directional + gamma ray’ MWD
Can be used in HPHT wells up to operating range of 175°C and 20,000 psi pressure
Features
- Best MWD Solution offering directional, gamma & tool temperature sensors
- Run in highly deviated wells, DLS up to 109°/100 ft unachievable through other MWD Systems
- Widest flow range for any MWD System (50 gpm – 1200 gpm)
- Long battery life up to 400 hours making it a great choice for deep and long runs
- Available in 3-1/2" to 9-1/2" collar sizes
- Positive mud pulse telemetry with very quick tool face updates–17 seconds
- Capable of short period (1.5 minute) directional surveys
- Advanced synchronization algorithm, advanced noise filtering and signal decoding techniques
- Highly accurate and sensitive measurement of direction and gamma rays
- Accurate directional measurements make anti-collision scans more reliable
APOLLO MODULAR MWD SYSTEM OVERVIEW
| Available Sensors | Directional, Gamma, Tool Temperature |
| Tool Configuration | UBHO Sub (muleshoe) and probe |
| Tool O.D. (availability) | 3-1/2” to 9-1/2” |
| Max Dogleg Severity | 109° / 100 ft |
| Max Operating Temperature | 175° C (347° F) |
| Pressure Drop Across Tool | Flow loop / calculated (water): 118 psi |
| Max Hydrostatic Pressure | 20,000 ps |
|
Flow Rate 70 ft/sec |
Low as 50 gpm (2.2” collar I.D.) Up to 1200 gpm (3-1/4” collar I.D.) |
SYSTEM OPERATION
| ON Telemetry Type | Positive mud pulse |
| Survey Transmission Time | 90 seconds |
| Tool Face Update Rate | 17 seconds average |
ABSOLUTE ACCURACIES
| Gravity Tool Face | +/- 0.05° to +/- 3.0°, Programmable |
| Poainting Accuracy | 0.15° = 2 ft per 1,000 ft displacement |
| Magnetic Tool Face | +/- 0.05° to +/- 3.0°, Programmable |
| Azimuth | +/- 0.1° (inclination > 5°) |
| Inclination | +/- 0.1° |
| Crossover to High Side Tool Face | Programmable to any value desired (5° is typical) |
| Repeatability | Inclination +/- 0.05°; Azimuth +/- 0.05° |
| Readout Resolution | Inclination 0.1°; Azimuth 0.1°; Tool Face 1° |
| Gamma Sample Rate | One per 1.8 seconds measured 20 per minute in downhole memory. Programmable. |
| Gamma Memory Capacity | 120 - 600 hours as function of program |
TOOL DIMENSIONS
| Directional Only | 31 ft/ 197 lbs |
| Directional + Gamma | 35.6 ft/ 229 lbs |
| Tool O.D. | 1-7/8" |
