Source Rock Analysis

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Source rock analysis using programmed pyrolysis is the primary geochemical method of analyzing rock samples, including core, sidewall core, outcrops, and cuttings.

Source rock analysis is primarily used as a source rock screening tool that measures the concentration of volatile hydrocarbons (S1), the convertibility of nonvolatile organic material to oil and gas (S2), and provides an estimate of the maturity of the rock sample (Tmax). When coupling source rock analysis data with TOC, information on kerogen type can be ascertained.


Weatherford Laboratories has developed a proprietary technology for the programmed pyrolysis of source rock samples via the Source Rock Analyzer (SRA).

The stability and reproducibility of SRA data makes it ideal for laboratory analysis, but it has also been field tested at hundreds of well site locations for swift analysis of rock samples.

Weatherford Labs utilizes numerous technologies to maximize our laboratories' throughput for rock sample analysis. 

Our wealth of experience with all methods of programmed pyrolysis as well as the variety of equipment at our disposal preserves our status as the leader in Source Rock Analysis.

  • Source Rock Analyzer
  • Rock-Eval
  • Rock-Eval VI

Source rock analysis provides a wealth of data in a brief analysis.

  • S1 - Concentration of volatile hydrocarbons

  • S2 - Convertibility of nonvolatile organic material to oil and gas

  • S3 - Amount of organic carbon dioxide released during pyrolysis

  • Tmax - Estimate of the thermal maturity of the rock sample

  • TOC - Total organic carbon (if specified)

  • Hydrogen Index (HI) - Ratio of S2/TOC; can be used to generate modified van Krevelen diagram and gauge thermal maturity of rock sample

  • Oxygen Index (OI) - Ratio of S3/TOC; can be used to generate modified van Krevelen diagram

  • Normalized oil content (NOC) - S1/TOC X100; provides insight on the thermal maturity of the rock sample and presence of contamination or migrated oil

  • Production Index (PI) - Ratio of S1/(S1+S2); provides insight on the thermal maturity of the rock sample; can be affected by migrated oil

 

Source-rock geochemistry log created using standard log layout template in IsologicaTM software.


Source Rock Analysis is indispensible for understanding your petroleum system.