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Micro-Resistivity

http://jesspetrie.com/?amilto=%D8%AD%D8%B3%D8%A7%D8%A8-%D8%A7%D9%84%D8%AA%D8%AF%D8%A7%D9%88%D9%84-%D9%85%D9%85%D8%A7%D8%B1%D8%B3%D8%A9-%D8%A7%D9%84%D8%AE%D9%8A%D8%A7%D8%B1%D8%A7%D8%AA-%D8%A7%D9%84%D8%AB%D9%86%D8%A7%D8%A6%D9%8A%D8%A9 The micro-resistivity module provides a high- vertical-resolution micro-focused resistivity measurement within the flushed zone. The measurement electrodes are mounted on a flexible pad which is maintained in contact with the borehole wall by a motor-driven back-up/ caliper arm. The measurement pad is interchangeable to give a either micro-focused resistivity or micro-normal/ micro-lateral electrode geometries. The tool is stackable with all other RG slim oilfield probes. When combined with the dual laterolog it replaces the lower guard electrode.

Principle of measurement:

Micro-focused resistivity

الخيارات الثنائية السوق العالمية تجريبي A central current-injection electrode is surrounded by 3 concentric ring electrodes in a circular LL-7 configuration. The measure current is focused into a narrow beam which penetrates the mud-cake to give a resistivity measurement in the flushed zone (Rxo) beyond.

Micro-normal/ micro-lateral

الخيارات الثنائية انذارا Three in-line button electrodes, 1” apart, are configured to provide simultaneous 2” micro- normal and 1.5” micro-lateral measurements. Separation of the two measurement values due to their different depths of investigation gives an indication of mud-cake thickness.

الفوركس فى مصر Features

  • High-vertical-resolution resistivity
  • Robust back-up arm ensures good pad contact
  • Pad interchangeable in field
  • Fully stackable with other RG oilfield probes

موقع مفيد Measurements

  • Resistivity of invaded zone (Rxo)
  • Borehole diameter

Applications

  • Determination of moveable hydrocarbons
  • Correction of Rt for invasion
  • Indication of permeability
  • Precise location of bed boundaries

Specifications

Diameter (over pad): 97mm (3.9”)
Length: 3.53m (139”)
Weight: 56kg (123lb)
Max. temperature: 125°C
Max. pressure: 86MPa (12,500psi)
Range: 0.2 – 2000ohm-m
(micro-focused resistivity)
Caliper range: 96mm (3.9”) – 400mm (12”)

Operating Conditions

اكتشاف هنا Borehole type:  4” to 12” open hole

Sales Information

I015642 Micro-resistivity probe
Accessories:
I015644 Spare micro-focused resistivity pad
I015646 Spare micro-normal/ micro-lateral pad

Download Micro-Resistivity sheet

Support

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

Robertson Geologging Ltd., 2017

how can we help you?

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