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Project Description
Geochemistry is defined by the Schlumberger Oilfield Glossary as "The study of the chemistry of the Earth and within solid bodies of the solar system, including the distribution, circulation and abundance of elements (and their ions and isotopes), molecules, minerals, rocks and fluids. For geochemists in the petroleum industry, source rock geochemistry is a major focus. Geochemical techniques can determine whether a given source rock is rich enough in organic matter to generate hydrocarbons, whether the source rock has generated hydrocarbons, and whether a particular oil sample was generated by a given source rock".
PPDM version 3.8 contains tables that allow information about water, oil and gas analysis to be captured, and details describing the collection, preparation and storage of lithologic samples have been defined. The workgroup seeks to expand on this base to support petrologic geochemical analysis. The following subjects are in scope for the work group, although not all work may be completed in phase 1.
- Source rock screening Geochemistry
- Source rock extraction
- Fluid Geochemistry
- Fluid inclusion geochemistry
- Sample types, collection and preparation
- Lithology
- Reservoir geochemistry
Objectives and Vision
The PPDM Geochemistry model will be the data storage mechanism of choice for laboratories, oil and gas companies, data vendors, software vendors and regulatory agencies. In order to achieve this vision, the data model must handle a very wide variety of geochemical analysis information as efficiently and effectively as possible while remaining understandable and usable.
Benefits
As standards are more widely implemented in our industry, data and information will become increasingly easy to find and interchange. Data conversions and migrations can be minimized, reducing the effort needed to move data around, and freeing resources to handle the essential task of data quality, integrity and completeness.
Geochemical data standards will reduce the large number of variable formats that data is currently received in, and allow data to be stored in databases, rather than in spreadsheets. Data bases support more powerful query mechanisms and are more easily integrated and converted than are spreadsheets or XML files.