Rock Pyrolysis

Bulk pyrolysis, like HAWK instruments as picture, generally provide following parameters for good or poor source rocks, like HI/OI for types of kerogens, Tmax for maturity and S2 or TOC for abundance of organic matter.

Rock pyrolysis is a fast technology for evaluating potential ability of oil and/or gas generation. Normally two different ways could be used on rock pyrolysis, that is bulk pyrolysis, like HAWK and component pyrolysis, like Py/GC.

HAWK Rock Pyrolysis Instrument


The HAWK Instrument is a full workstation including the computer, printer, power accessories and leak detector.

  • Pyrolysis and TOC parameters
  • Multi-ramp/zones and multi-peaks (including our predefined HAWK-PAM™)
  • 126 sample capacity
  • No loss of light oil
  • Precise Temperature
  • Multi-point calibration
  • True temperature for kinetics
  • HAWK-Eye software


  • Evaluation of both conventional and unconventional petroleum resources
  • Identify unconventional hydrocarbon resources such as shale oil, tight oil, low resistivity, by-passed, and conventional payzones
  • Determine classical geochemical parameters for source, maturity and kerogen type

The HAWK Instrument will provide you with the basic data for formulation of geochemical logs that is needed to classify the type of reservoir rock that your drill bit encounters.

Application of data from HAWK leads to the successful identification of producible Shale Oil Resource Systems.

  • Continuous organic-rich mudstones with no open fractures (tight shale)
  • Organic-rich mudstones with open fractures (fractured shale)
  • Organic-rich mudstones with interbedded organic-lean facies (hybrid shale)

Key to producible shale oil resource systems and identification of by-passed pay zones is the presence of producible oil which occurs when the “oil crossover effect” is plotted as shown below:

  • Utilizing the “Oil Crossover Effect”:
  • S1/TOC > 1 or when Oil Saturation Index (S1/TOCx100) > 100 mg oil/g TOC


  • S1 (free oil)
  • S2 (kerogen yield)
  • S3 (organic carbon dioxide yield)
  • S4
  • Tmax (maturity)
  • TOC (Total Organic Carbon)
  • CC (Carbonate Carbon)
  • Absolute Tmax for kinetics calculations

Plus the Following Interpretative Calculations:

  • Adsorption Index (AI)
  • Oil Saturation Index (OSI)
  • Hydrogen index (HI)
  • Oxygen index (OI)
  • Production index (PI)
  • Generative Organic carbon (GOC)
  • non-generative organic carbon (NGOC)

Component pyrolysis as picture 2, mostly combining with GC or GC/MS, could give more details information of hydrocarbons. Researcher could know deposit environment, types of organic input and biomarkers using for oil/source correlation study from this information.

Py/GC system with SRA and Agilent GC