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Compensated Neutron Tool – PTX – 2 3/4 in.

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SKU: 050-CN275-WSBL
  • Description

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
Torque:150 ft-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)
Maximum: 60 ft/min (18.2 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.

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