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Dual Laterolog

http://www.iranzamin.org/?hifoar=%D9%85%D8%A4%D8%B4%D8%B1-%D8%A7%D9%84%D9%81%D9%88%D8%B1%D9%83%D8%B3&95b=f4 مؤشر الفوركس The RG dual laterolog provides deep and medium penetrating resistivity measurements using a classic laterolog-9 electrode configuration. It is the preferred alternative to the array induction probe in saline drilling muds.

Principle of measurement:

اقرأ المقال An alternating current from a centre electrode A0 passes through the formation and returns to a surface fish (deep resistivity) or to electrodes A2 and A2’ on the probe (shallow resistivity). A bucking current flowing from the guard- electrode pair A1 and A1’ is controlled to maintain the monitor electrode pairs M1M2 and M1’M2’ at the same potential. These equipotential surfaces constrain the measure current path to a disc of thickness 2ft.

http://www.amb.se/?sework=jobba-hemifr%C3%A5n-konsult&f91=15 Features

  • Down-hole digital control of current sequence for deep and shallow measurements
  • Focused measurement gives high vertical resolution
  • Constant power drive for wide dynamic range
  • Voltage reference and SP measurement from electrode on rigid bridle
  • Stackable with RG slim oilfield tool range

مصدر الصورة Measurements

  • Deep focused resistivity (LLD)
  • Shallow focused resistivity (LLS)
  • Groningen
  • SP

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  • Invasion profile
  • Fluid
  • Saturation
  • Permeability indication

Specifications

Diameter: 63mm (2.5”)
Total length: 9.04m (357”) (in 3 sections)
Max section length: 3.37m (133”)
Weight: 102kg (225lb)
Max. temperature: 125°C
Max. pressure: 86MPa (12,500psi)
Range: 0.1 to 40,000ohm-m
Accuracy: 5% at 1000ohm-m
Resolution: 1% measured value

Operating Conditions

تحقق من هذا الموقع Borehole type: Open-hole, mud filled 4” – 12”

Sales Information

I0013886 Dual laterolog probe
Accessories:
I0015009 Solid bridle with reference electrode
I0013888 Field test box with leads and clamps
I0015341 Centraliser (2 required)

Download Dual Laterolog sheet

Support

...Practical Innovation with Global Service & Support...

Robertson Geologging Ltd., 2017

how can we help you?

(+44) 1492 582 323 sales@geologging.com