SBED

Articles

Seeing the Subsurface
Given a choice, oil and gas geoscientists would surely love an opportunity to peel back the layers of earth covering their buried reservoirs to steal a peek at their inner workings. But given that's not feasible, a Calgary company is providing the next best thing.

Small-scale reservoir modeling tool optimizes recovery offshore Norway
Modeling of small-scale bedding geometries improves recovery estimates in Norwegian oil fields, yielding added value of at least 16 million barrels.


Papers

Bridging the missing scales: New developments in small-scale heterogeneity modeling
Reservoir heterogeneity exists at multiple scales, from pore structures, bedding structures, internal stratification, litho-facies, to fault blocks. Conventional reservoir modeling workflows do not consider multi-scale heterogeneity in an integrated manner, which results in unrealistic and inaccurate reservoir models. Applying such models in reservoir simulations increases the uncertainty in history matching and reserve predictions.

A new approach to the petrophysical characterization of thin layered reservoirs
An innovative methodology was used to characterize the petrophysical properties of a clastic reservoir consisting of levels thinner than the resolution of wireline logs. The methodology presented here: 1) allows modeling the actual sedimentary complexity of each log-facies; 2) provides a dynamic upscaling of the petrophysical parameters (Phi, Kh, Kv); 3) takes implicitly into account the net-to-gross.

Geologically based estimation of kv / kh ratios: an example from the Garn Formation, Tyrihans Field, Mid-Norway
A simple geologically based upscaling method including the use of SBED software package has been developed. Small-scale models of near well-bore geology are upscaled using single-phase flow simulation to obtain directional-dependent permeabilities for facies with different mud contents and style.
This approach gices a more realistic kv/kh ration than traditional methods involving simple averaging, or arbitrary guesses, of vertical permeability.

Petrophysical characterization of a heterolithic tidal reservoir interval using a process-based modelling tool
Heterolithic litofacies in the Jurassic Tilje Formation, offshore mid-Norway, consist of three components - sand, silt, and mud itercalated at the centimetre scale - and are generally difficult to characterize petrophysically with core and wireline data.
A near-wellbore model of the lower part of the Tilje Formation in the Heidrun Field is constructed to illustrate the application of these results to formation evaluation studies.

Vertical permeability estimation in heterolithic tidal deltaic sandstones
A method for estimation of vertical permeability in heterolithic tidal deltaic sandstones is proposed. Three-dimensional, stochastic, process-based models of sedimentary bedding are used to give estimates for the effective permeability of heterolithic tidal sandstone units where heterogeneities in the sandstone and mudstone components are evaluated explicitly.

Application Notes

Multi-scale heterogeneity modeling - A method for reservoir data integration

SBEDStudio - An integrated workflow solution for multi-scale geomodeling

Modeling Uncertainty in Discount Factors for Turbidite Channel Reservoirs

Solutions:



Thin-Bedded Reservoirs

Technical Bulletins:

Near Well Bore Modeling (1,933 KB)
Upscaling from Core Scale to Reservoir Grid (1,638 KB)

Featured Case Study:

Small-scale reservoir modeling tool optimizes recovery offshore Norway (395 KB)
Modeling of small-scale bedding geometries improves recovery estimates in Norwegian oil fields, yielding added value of at least 16 million barrels.