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CMR Combinable Magnetic Resonance Tool

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Measure Pore-Size Distribution and Fluid Contents

Improved predictions of permeability and producibility

High-resolution CMR combinable magnetic resonance technology is important for formation evaluation, giving you free-fluid index measurements for differentiating zones of water-free production.

The CMR signal is processed to estimate the distribution of pore sizes. This is a wireline formation measurement you get only with the CMR tool.

Find overlooked pay zones in difficult-to-interpret environments. Also, you’ll reduce rig time because CMR tools are combinable with other logging tools.

Tradition of technology excellence

As the fifth generation of nuclear magnetic resonance (NMR) technology, the CMR tool is capable of 6-in vertical resolution. This helps you identify very thin permeable zones.

Researched and tested

CMR service gives you continuous, reproducible measurements with excellent vertical resolution. Research and extensive field tests have proved that CMR measurements are a reliable source of information.

Benefits

  • Improve predictions of permeability and producibility with pore-size distribution data
  • Improve reserves calculations and water-cut estimates with free-fluid porosity
  • Determine thin beds with high resolution
  • Reduce rig time with combinability
  • Get synergistic measurements with combinability
  • Determine lithology-independent porosity
  • Evaluate large wellbores and highly deviated wells with pad-like skid
  • Measure in any drilling environment, with no mud conductivity limits

CMR-Plus

CMR and MDT

CMR Oil ID

MRF

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Here, CMR data are used to calculate Swirr. Sw from conventional logs shows water saturations ranging from 60% to 90%. The CMR measurement shows this rock to have very small pore sizes containing a high volume of irreducible water, so the predominant movable fluid is the hydrocarbons. After hydraulic fracturing (note low CMR permeabilities) and completion, this economical U.S. land well is producing gas, oil and a small fraction of water.
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