Integrated Geochemical Interpretion Limited IGI Ltd

Basin Modelling

IGI personnel have extensive experience in the construction and interpretation of 1-D, 2-D and map-based (2.5-D) basin models. Data derived from drilling logs, core and cutting samples, company literature, published reports and seismic profiles and grids are used in the construction of models.

A one dimensional model (1-D) deals with depth variations at a single point, such as a drilled well. In essence, the model is only concerned with maturity modelling and is unaware of lateral variations in lithology, fluid flow or heat flow. Its primary function is the estimation of the depths to the oil and gas windows, and production of results on the timing, types and amounts of hydrocarbons generated. 1-D models are easy to calibrate, quick to run and are relatively inexpensive.

Two dimensional modelling (2-D) deals with a cross-section, such as an interpreted seismic line, or interpolation between two wells, and is concerned with both maturity and fluid-flow modelling through time. This type of modelling is a powerful tool for understanding the migration of fluids and views the basin as a petroleum system. 2-D models are relatively easy to construct, generally run quickly but can be difficult to calibrate.

In terms of understanding a particular petroleum system, a combination of a series of 2-D lines and volumetric calculations is a cost effective and relatively rapid means of assessing petroleum potential, fluid flow and estimations of charge. It is sometimes called a 2.5-D model because it combines a series of 1-D or 2-D models with seismically-derived surfaces to produce a series of layers (units) and the appearance of a 3-D model.

Modelling software

With permanent licenses IGI can offer basin modelling using a range of software packages:
1-D modelling: BasinMod ( Platte River), PetroMod (IES) & Genesis (Zetaware)
2-D modelling: BasinMod (Platte River) & PetroMod ( IES)
2.5-D modelling: BasinView (Platte River) & Trinity ( Zetaware)

Full 3-D modelling work is conducted in association with IES.