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Geochemistry Laboratories

SOPs

ERP-PGRL-SOP-01 Submittal, Sample Receipt, Login to LIMS and Reporting

This procedure describes sample submittal procedures from submittal, sample receipt, login to LIMS, storage, reporting and return of any remaining sample to the submitter after all analyses are complete. 

 

ERP-PGRL-SOP-02 Solid Sample Preparation

This procedure describes several methods to crush geologic samples to a suitable particle size.

 

ERP-PGRL-SOP-03 Glassware PTFE and Crucible Cleaning

This procedure describes cleaning non-volumetric glassware, volumetric glassware, polytetrafluoroethylene beakers, stainless steel crucibles and glass Gas Chromatography vials.

 

ERP-PGRL-SOP-04 Gravimetric Determination of Bitumen

This procedure is used to extract bitumen (solvent-soluble organic matter) from a wide variety of unaltered and altered source and reservoir rocks such as coal, lignite, oil shale and tar sands. The concentration of bitumen is determined gravimetrically.

 

ERP-PGRL-SOP-05 Total Organic Carbon or Total Carbon in Geologic Material by Leco C744

Total Organic Carbon (TOC) and Total Carbon (TC) may be determined using this procedure. TOC is a measure of the organic richness of geologic materials and is useful as an indicator of petroleum potential. This procedure uses a non-dispersive infrared cell.

 

ERP-PGRL-SOP-06 Fractionation of Oil or Bitumen by Column Chromatography and Gravimetric Determination of Percent Saturated, Aromatic, Resin, and Asphaltene Hydrocarbons

This procedure utilizes open-column chromatography for compound class separation of oils and bitumen extracts.  The saturated, aromatic, resin and asphaltene (SARA) fractions are dried and the weight percent of each fraction in the oil or bitumen is determined gravimetrically.

 

ERP-PGRL-SOP-07 Programmed Pyrolysis

Programmed pyrolysis is primarily used as a screening tool in the evaluation of hydrocarbon-generating potential and thermal maturity of prospective source rocks. During programmed pyrolysis, organic matter in rock samples is thermally decomposed by heating in an oxygen-free environment.

 

ERP-PGRL-SOP-08 Qualitative Biomarker Analysis by Magnetic Sector Gas Chromatography Mass Spectrometry

Biological markers (biomarkers) are complex molecular fossils derived from biochemicals, particularly lipids, in once living organisms. Biomarker geochemistry is used by scientists to assess maturation, correlation, source input, depositional environment, and biodegradation of organic matter in petroleum source rocks, reservoirs, and the environment.

 

ERP-PGRL-SOP-09 Powder X-ray Diffraction of Rock, Sediment and Soil

This procedure describes the determination of crystalline mineral phases in rock, sediment and/or soil mixtures.

 

ERP-PGRL-SOP-10 Qualitative Analysis of Whole Oil, Bitumen, and Saturated and Aromatic HC by GGCFID

This procedure is used to screen, correlate and characterize crude oil and extractable organic matter from source rocks.  Gas chromatography flame ionization detection chromatograms of sample fluids are interpreted to derive characteristic parameters. The pristane to phytane ratio, four different carbon preference indices and three odd even predominance indices are calculated from the saturated hydrocarbon fraction, crude oil or bitumen gas chromatograms.  These parameters can be used to gain a better understanding of the origin, maturity, and secondary alteration, of petroleum system components.

 

ERP-PGRL-SOP-11 Determination of API Gravity

This procedure is used to determine the American Petroleum Institute (API) gravity of a crude oil. API gravity is the standard specific gravity used by the oil industry, which compares the density of oil to that of water through a calculation designed to ensure consistency in measurement. The API gravity is determined using an Anton Parr digital density meter which uses the oscillating U-tube technique to determine the density of the oil.

 

ERP-PGRL-SOP-13 d13C Analysis of Natural Gas Components via GC-IRMS

The determination of the 13C/12C ratio on components of natural gas (methane, ethane, propane, butanes, pentanes and carbon dioxide) has been historically used in combination with the D/H ratio of methane and compositional analysis to genetically type natural gases as being of thermogenic, mixed or bacterial origin.  We utilize the latest commercial continuous-flow technology to link a gas chromatograph to a modern isotope ratio mass spectrometer via an oxidative interface. 

 

ERP-PGRL-SOP-16 Carbonate removal for d13C analysis

This SOP describes a treatment to remove inorganic carbon (i.e., carbonate) from sedimentary rock samples prior to carbon isotopic analysis.

 

ERP-EGL-SOP-14 d13C and d15N Analysis of Bulk Organic Liquids and Solids via EA-IRMS

The determination of the 13C/12C and 15N/14N ratios on bulk organic materials has been widely used in petroleum geochemistry for correlational analysis and paleo and modern environmental geochemistry. Analyses can be performed on ANY solid or liquid organic materials including but not limited to whole oils, bitumens, SARA fractions, and kerogens.  In order to provide timely, accurate and precise carbon isotopic analyses, we utilize the latest continuous-flow technology to link an elemental analyzer to a modern isotope ratio mass spectrometer (EA-IRMS) via an open-split interface. 

 

 

ERP-EGL-SOP-15 d2H Analysis of Natural Gas Components via GC-IRMS

The determination of the D/H ratio on methane has been historically used in combination with the 13C/12C ratio of methane to genetically type natural gases as being of thermogenic, mixed or bacterial origin.  In order to provide timely, accurate and precise hydrogen isotopic analyses, we utilize the latest continuous-flow technology to link a gas chromatograph to a modern isotope ratio mass spectrometer via a pyrolytic interface. 

 

ERP-EGL-SOP-12 Elemental Analysis of CHNOS (analysis currently not available)


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Page Last Modified: Tuesday, February 06, 2018