Features
● Build rate is 15°/100 ft (15°/30 m).
● Provides Azimuthal Gamma Ray
● Provides Near Bit Inclination.
Introduction
The high build rate (15°/100 ft.) geosteering system makes sure drill directional or horizontal wells by only one trip. Near bit inclination, azimuthal gamma ray, resistivity, caliper, pressure, vibration, etc are acquired at the same time.
Components
Stop Sub
Bi-directional Communication & Power System While Drilling-High Build Rate (BCP-B)
Pressure & Caliper Measurement While Drilling (PCD) Electromagnetic Propagation Resistivity-High Build Rate (EPR-B) Wireless Measurement While Drilling-High Build Rate (MWD-B) Rotary Steerable Unit-High Build Rate (RSU-B)
Note: MWD-B includes Azimuthal Gamma Ray.
Specifications
| Tool O.D. (Nominal) |
6.75 in. |
| Well OD. |
8-1/2 in. to 9-7/8 in. (216 to 251 mm) |
| Length (Nominal) |
57 ft.-8.91 in. (17.6 m) |
| Weight |
4,079 lbs. (1,850 kg) |
| Connections |
GT6 box up
GT6 box down |
| Dogleg Severity |
Max. Rotating 15°/100 ft. (15°/30 m)
Max. Sliding 20°/100 ft. (20°/30 m) |
| Mud Flow Range |
760-3,030 lpm |
Operating Specifications:
|
Max. Temperature
|
350°F (175°C)
|
|
Max. Pressure
|
20,000 psi (137.9 MPa)
|
|
Sand Content
|
Max. volume recommended<1%
|
|
Lost Circulation Material
|
Fine to medium nut plug
|
|
Pulsation Dampener
|
Recommended set to 1/3 stand pipe
pressure
|
|
Data Acquisition
|
Mud pulse telemetry to surface and
downhole memory
|
|
Telemetry Type
|
Positive pulse
|
|
Mud Pumps
|
Either duplex or triplex
|
|
Downhole RPM
|
± 80% max. deviation from the
mean Operating rpm (e.g., 100 rpm: Operation Range=20-180 rpm)
|
|
Pulser Pressure Drop
|
Pressure drop dependent upon mud
weight, flow rate, MWD tool valve gap, and data transmission rate.
|
|
DP at Bit
|
No restrictions
|
|
Mud Filter (Uphole)
|
Most sizes supplied
|
|
Full Survey Transmission
|
55 seconds from Pumps-On
|
