Description
Ratings & Dimensions
|
Max Temperature |
350°F (177°C) for 4 hours |
|
Maximum Pressure |
20,000 psi (138 MPa) |
|
Outer Diameter |
2.75 in (69.9 mm) |
|
Length |
61.68 in (1566.67 mm) |
|
Weight |
60 lb. (27.2 kg) |
|
Min Csg/Tbg OD |
4.5 in (115.0 mm) |
|
Max Csg/Tbg OD |
9.63 in (244.60 mm) |
|
Tensile Strength1 |
Tension: 15,000 lb Compression: 15,000 lb |
|
Measure Points |
Near Detector (SS): 16.32 in (414.53 mm) Far Detector (LS): 21.36 in (542.54 mm) |
Borehole Conditions
|
Borehole Fluids |
Salt, Fresh and Oil |
|
Logging Speed |
Recommended: 35 ft/min (10.0 m/min) |
|
Tool Positioning |
Centralized | Eccentralized |
Hardware Characteristics
|
Source Type |
15 Curie Am241 Be Neutron Emitter |
|
Sensor Type |
One He3 Gas Detector Tube each |
|
Sensor Spacing |
Near Detector (SS): 17.5 in (444.5 cm) Far Detector (LS): 27.5 in (698.5 cm) |
|
Transmission Rate |
20 frames /sec |
|
Waveform |
Digital Telemetry Data |
|
Combinability |
GR, CCL (Required), RADii CBT, Digital CBT |
Measurements
|
Type |
Neutron Porosity |
|
Principle |
Ratiometric Thermal Neutron Detection |
|
Range |
-3 to 60 porosity units |
|
Vertical Resolution |
Approximately 10 in (254 mm) |
|
Depth of Invest. |
Porosity dependent, 12 in or less (304.8 mm or less) |
|
Accuracy (1SD) |
± 2% |
|
Primary Curves |
Neutron API Units | Near & Far Detector Count Rates |
|
Secondary Curves |
Detector Count Rate Ratio |
Calibration
|
Primary |
University of Houston API Neutron Pit |
|
Secondary |
Neutron Calibration Tank |
|
Wellsite Verifier |
350 μCi Active Verifier |
1Strengths apply to new tools at 70°F (21°C) and 0 psi.
* This tool must be run in conjunction with a 2.75 in Digital Gamma Ray tool. It cannot be run alone.
Version Control: 2021.12.09
On-line specifications are for REFERENCE ONLY and subject to change without notice. DO NOT USE FOR FIELD OPERATIONS.
