Basin modeling

Basin modeling or analysis is a technique for understanding physical and chemical processes that cause oil and gas generation in sedimentary basins. It allows you to reconstruct the burial and temperature history of a sedimentary basin through time and to understand source rock maturation and subsequently hydrocarbon expulsion and migration.

Sedimentary basin modeling is a geological method by which the history of a sedimentary basin is revealed, by analysing the sediment fill itself. Aspects of the sediment; composition, primary structures, and internal architecture, can be synthesized into a history of the basin fill. This can reveal how the basin formed, how sediment was transported or precipitated, and reveal sediment sources.

From such syntheses models can be developed to explain broad basin formation mechanisms; backarc, forearc, passive margin, epicontinental and extensional basins. Sedimentary basin analysis is often conducted through the use of reflection seismology and well data or (analogue) field data, exhumed and dissected by subsequent tectonic events.

Important tools in sedimentary basin analysis are geological maps, stratigraphy, chronology, and sequence stratigraphy, in which various sedimentary sequences are related to pervasive changes in sea level and sediment supply.

At the most basic, a basin modeling must assess:

  • The burial history of the basin (backstripping).
  • Thermal history of the basin (modeling).
  • The maturity history of source rock(s).
  • Expulsion, migration and trapping of hydrocarbons (and their different phases).

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Why Basin Modelling

Various factors influence the petroleum system and it is imperative to understand their evolution through time. With this knowledge the burial and thermal histories can be calculated and used to assess generated and migrated hydrocarbons as well as migration pathways and reservoir properties. Basin modeling is a valuable tool in the search for new reservoirs. Also assessment and ranking of undiscovered resources. With the increasing processing capability of today's PC's and workstations, the road is open for moving basin modeling to where it belongs, to the geologist doing the basin modeling.

What Can Basin Modeling do?

The resulting model is an interactive tool that the geologist can use to:

  • Test impact on prospect charge from changes in various assumptions (as source characteristics), Assess the charge risk associated with each of the various
  • elements of a given petroleum system (e.g., adequate source richness, volume, maturity and timing relative to timing of trap formation).
  • Estimate volume of petroleum generated from a given volume of source rock(s), volume expelled and lost during migration – and quantity of petroleum delivered to the trap(s).
  • Depending on the sophistication of the model (and the data on which the model is based!), the basin model may help the geologist address issues such as:
  • The timing of hydrocarbon generation relative to the timing a trap formation.
  • The volumes of hydrocarbons delivered to a trap.
  • Hydrocarbon type in the trap (liquid vs. gas and their relative proportions). Physical properties (PVT) of the hydrocarbon charge.
  • Possible migration paths to the prospect (and migration shadows).
  • Possible post-charge loss from the trap (seal leakage, tilt and spill, thermal cracking, biodegradation

Our Services

  • We can assist you in the construction of special grids for basin Modeling in which the cell faces should match the fault plane and in their restoration over the entire time period upto the depositional date
  • The construction and interpretation of 1-D, 2-D and map-based (2.5-D) basin models.
  • Hydrocarbon charge studies using basin modelling techniques
  • Basin and block scale prospectivity studies
  • 3D gridding module enables the construction of special grids for basin modeling. Basin modeling grids differs from reservoir flow simulation grids in that cell faces should match the fault plane.