Percussion Sidewall Core


During percussion sidewall coring, an explosive charge is used to fire a short core barrel into the formation at high speed.  This method of coring does not yield the same quality of rock material produced by conventional or rotary coring, but it has the advantage of being a much faster and less expensive way to retrieve rock material.

Service around the clock

Proper sampling and handling of these samples directly contributes to the quality of the data generated.  Our Percussion Sidewall Lab operates 24 hours a day to deliver data within hours of our receiving the samples which enables you to make fast completion decisions. 

The most cost-effective and useful tool in your evaluation arsenal.

  • Residual saturations useful in water-based mud systems

  • Sample volumes typically suitable for petrology and geochemistry

  • Aid for completion strategies and evaluating anomalous log response

Additional uses of percussion sidewalls

  • Grain size analysis (LPSA/sieve analysis)

  • Petrographic analysis (XRD, thin section, and SEM)

  • Formation damage (capillary suction time and acid solubility)

  • Custom photography


Data acquired from routine PSWC Analysis:

  • Permeability (empirical)

  • Porosity (summation of fluids)

  • Saturations (oil/water/gas)

  • Critical water (empirical)

  • Oil gravity (refractive index)

  • Combustible gas

  • Lithologic description






With over 200 years of combined experience, the Weatherford Laboratories sidewall core analysis team offers an inexpensive and rapid method to determine porosity, permeability, and oil/water saturations. Our experts can explain questionable log responses and also distinguish pay from non-pay, regardless of mud type.