What is well log analysis?

Well log analysis uses various tools to describe reservoir properties such as mineralogy, saturation, hydrocarbon exploration and porosity. The process is used to describe various topics such as formation of water resistivity, mechanical properties of rocks and logs of gamma rays.

What do well logs measure?

Engineers and drillers use well logs to measure depths of formation tops, thickness of formations, porosity, water saturation, temperature, types of formations encountered, presence of oil and/or gas, estimated permeability, reservoir pressures and formation dip — ultimately determining whether a well is commercially …

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 well log correlation?

    Well log correlation can be considered the identification and connection of equivalent patterns and/or values between log curves of adjacent wells. “Good’ or “accurate” correlation can almost be viewed as an acquired art or craft hence there can often be much argument and dispute over the results.

    How can you tell lithology from well logs?

    Lithology is also determined from the logs, because each main reservoir lithology has characteristic responses. Frequently, lithologies are derived by pattern recognition of the GR-, density-, and neutron-log responses. Some subsequent delineation wells are likely to be cored over the entire of the reservoir interval.

    What is RT in well logging?

    Rxo= Resistivity of flushed zone. Rw= Resistivity of formation water. Rmf= Resistivity of mud filtrate. Rt= Resistivity of uninvaded zone.