During percussion sidewall coring, an explosive charge is used to fire a short core barrel into the formation at high speed. The barrel, along with a core of approximately 1” in diameter and around 1” – 2” long, is then retrieved. A percussion-core wireline tool can typically provide several dozen cores in one run. This method of coring does not yield the quality of rock material produced by conventional or rotary coring, but has the advantage of being a much faster and less expensive way to retrieve rock material.
PERCUSSTION SIDEWALL CORES
Retrieval and Stabilization
Core Photography (WL & UV)
Geochemistry
Routine Analysis
Sample Extraction
Laser Grain Size Analysis (LGSA)
Sieve Analysis – Wet or Dry
Oil Gravity (Refractive Index)
Calculated Permeability, Combustible Gas & Lithology
Water/Oil/Gas/Saturations
Porosity
Capillary Suction Time Testing (CST)
Geological Services
Scanning Electron Microscopy (SEM) and Energy Dispersive Spectrometry
Thin Section Analysis (Point Count, Touchstone)
X-Ray Diffraction (XRD
Palynology/Biostratigraphy