What is Welllogging PDF?

Well logging is a means of recording the physical, acoustic and electrical properties of the rocks penetrated by a well. Logging has the advantage that it measures in situ rock properties which cannot be measured in a laboratory from either core samples or cuttings.

Why is well logging important?

The process of extracting the detailed records of geologic formations made by a well or a borehole is called well logging. It helps in gathering the complete information including its formation traits and fluid properties.

What is quad combo log?

The quad-combo, which includes resistivity, bulk density/neutron porosity, sonic, and gamma ray measurements, provided the operator with information to evaluate the reservoir’s potential and lithology.

Why do we need well logging?

Well logging techniques are very widely used for electrical imaging, mine mapping, hydrocarbon and hydrological exploration for getting important in situ properties for possible reservoir rocks. Electric logs are considered the most useful for evaluating formation fluid properties.

What are the well logging tools?

Electric Micro Imaging Log.

  • Circumferential Borehole Acoustic Scanning.
  • Magnetic Resonance Imaging Log.
  • Multi-Array Induction Imager Tool (MIT)
  • High-resolution Array Laterolog Imager Tool (HAL)
  • Micro-Conductivity Imager Tool (MCI)
  • Multi-Pole Array Acoustic Logging Tool (MPAL)
  • Ultrasonic Imager Tool (UIT)
  • What is a triple combo?

    The triple combo is the standard set of measurements used in formation evaluation and wireline logging: gamma-ray, porosity, and resistivity. Simply put, the triple combo tells us about rocks, pores, and fluids. A gamma-ray log measures naturally occuring radioactive minerals.

    Are there any rules in the well log interpretation?

    So, there you go – the six Ko Ko Rules in well log interpretation. It goes without saying that the rules won’t work all the time. They are just rules, not a law. Even for gravity, it works on earth, but not so well in space. When it doesn’t work, ignore these rules.

    What’s the best way to read a well log?

    That’s just how nature works. It’s a good starting point for any well log evaluations. The next step would be to look at all the available logs curves and other well data so you can do a proper quantitative log analysis. That’s when petrophysics gets really interesting.

    How is well log analysis used for reservoir characterization?

    Some approaches are needed to characterize reservoir, by using well log data, the user may be able to calculate: The interpretation of well log data must be done in several steps and it is not recommended for the user to analyze them randomly because, the result might be a total error.

    Which is the best library for well log visualization?

    Well-Log-Visualization is an advanced domain specific extension for TIBCO Spotfire that provides functionality to visualize well log data (using the d3.js visualization library and JSVIZ). Basic Well Log Interpretation with python, pandas, matplotlib.