New 2.38-inch (60mm) diameter Javelin-238 available now.

Javelin Wireline magnetic resonance logging system available in two diameters

  • Javelin-238 offers low-cost, small-diameter, high-resolution, multi-frequency logging with interchangeable 2.38-inch and 3.5-inch sensors.
  • Javelin-350 offers large-diameter, four-frequency logging with interchangeable 3.5-inch and 5.25-inch sensors.

Advantages

The unique design features of Javelin Wireline enable performance over a wide range of borehole environments and drilling conditions.

View Beyond Drilling Disturbance

Drilling disturbs the formation around the borehole. Javelin provides deep view sensitivity, detecting the native formation in a sensitive shell located past the disturbed zone. This large diameter of investigation allows Javelin to operate in larger hole diameters, avoiding influence from washout and mud-invasion.

Multi-frequency Logging

Javelin Wireline acquires data at multiple frequencies during a single logging run to obtain sensitivity at up four discrete diameters of investigation. Shells can be combined in post-processing to improve data quality or can be analyzed independently to assess radial variation or drilling artifacts.

diagram info graphic showing detail of the Javelin tool

graphic showing multiple NMR sensitive shells

Javelin-238

The Javelin-238 offers a 2.38-inch digital logging downhole section with interchangeable magnetic resonance sensors in 2.38-inch and 3.5-inch diameters. The Javelin-238 logs magnetic resonance data at two frequencies, providing two independent measurement shells. Integrated natural gamma measurement is available.

The Javelin-238 is lower cost, higher resolution, and has shorter echo spacing than the larger Javelin-350. It is smaller, easier to handle, and can be deployed from smaller logging vehicles.

Recommended for boreholes from 3″ to 12″ (7.5 to 30cm).

JAVELIN-238 WIRELINE SYSTEM

Diameter: 2.38 inches
Logging Speed: 100-500 ft/hr
Cable: 3/16 inch 4-core
Javelin Wireline® Control Box:
110/220V, USB, 3U rackmount

Power and Digital Module
Diameter:
2.375in (6cm)
Length: 6.6ft (2m)
Weight: 44lb. (20kg)

 

Javelin Sensors JPY238 JPY350
Sensor Diameter 2.38in (6cm) 3.5in (8.9cm)
Sensitive Diameter F1: 9in (23cm) F1: 12in (30cm)
F2: 11in (28cm) F2: 15in (38cm)
Vertical Resolution 10in (25cm) 20in (50cm)
Min Echo Spacing 450μs 600μs
Pressure Rating* 2350psi 1700psi
Length 6.1ft (1.9m) 6.0ft (1.8m)
Weight 25lb (11kg) 55lb (25kg)

*Includes a Safety Factor of 2.

Javelin-350

The Javelin-350 offers a 3.5-inch digital logging downhole section with interchangeable magnetic resonance sensors in 3.5-inch and 5.25-inch diameters. The Javelin-350 logs magnetic resonance data at four frequencies, providing four independent measurement shells.

The Javelin-350 is larger than the Javelin-238, for logging the largest boreholes.

Recommended for boreholes from 4″ to 18″ (10 to 46cm).

JAVELIN-350 WIRELINE SYSTEM

Diameter: 3.5 inches
Logging Speed: 100-500 ft/hr
Cable: 3/16 inch 4-core
Javelin Wireline® Control Box:
110/220V, USB, 3U rackmount

Power and Digital Module
Diameter:
3.5in (8.9cm)
Length: 7.5ft (2.3m)
Weight: 55lb. (25kg)

Javelin Sensors JPX350 JPX525
Sensor Diameter 3.5in (8.9cm) 5.25in (13cm)
Sensitive Diameter F1: 10in (25cm) F1: 15in (38cm)
F2: 12in (30cm) F2: 17in (43cm)
F3: 13in (34cm) F3: 19in (48cm)
F4: 15in (38cm) F4: 21in (53cm)
Vertical Resolution 20in (50cm) 20in (50cm)
Min Echo Spacing 800μs 800μs
Length 5.9ft (1.8m) 5.4ft (1.6m)
Weight 65lb. (30kg) 95lb (43kg)

Surface Station

JAVELIN WIRELINE SURFACE STATION

Compatibility: Operates both the Javelin-238 and Javelin-350 downhole wireline logging systems.

Installation: Rack-mount configuration for installation in a logging vehicle, or available in a stand-alone, shock-mount case (pictured at right).

Power Requirements: Runs on 110V or 220V for global deployment.

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