RDR has developed unique skills in the analysis of fault zones. We have devised a new and integrated approach to solving fault seal issues, combining microstructural and petrophysical analysis of cores, and structural logging of cores, with seismic scale characterization of fault array geometries. We have also generated an extensive database on fault rock properties, fault zone structures, and sealing behavior, which can be used to enhance fault/fluid flow evaluation in areas where limited data is available.
The RDR integrated approach to fault seal analysis
- Physical property and microstructural analysis of deformation features in cores—Allows quantification of fault rock permeabilities and transmissibilities, the identification of sealing mechanisms, evaluation of sealing capacities, and assessment of the timing of seal development and seal stability.
- Detailed structural logging and geostatistical analysis of deformation features sampled by wells—Provides a database for the characterization of the distribution, clustering, and populations of subseismic faults.
- 3D mapping of seismic scale fault geometry and evolution—Allows evaluation of structural history, displacement, and juxtapositions patterns, as well as the identification of potential reservoir compartments.
- Integration of well test and production data—Allows construction and testing of models for hydrocarbon/water contact variations and flow behavior.
- Flow Modeling in complex fault zones—Enables generation of complex fault zone models based on the geostatistics derived from core logging and petrophysical analysis. The critical parameters can then be 'collapsed' on to an average fault plane for use in reservoir modeling packages.
- Generation of reservoir modeling parameters—Integrates physical property, fault geometry, and fault activity datasets, allowing the selection of critical parameters (fault zone permeability and transmissibility, etc.) needed for realistic and robust reservoir modeling.
- Generation of decision pathways to facilitate risk assessments—Evaluates the range of possible fault geometries and the impact on sealing behavior.
- Construction of fluid communication maps—Amalgamates available data sets to illustrate potential communication pathways and identify critical areas (volumes) where the alternative solutions require more assessment.
Comprehensive fault seal assessment
RDR fault seal analysis offers the following:
- Derivation of complex fault zone properties for reservoir modeling
- Evaluation of faulting and fault sealing in individual hydrocarbon fields or parts of fields
- Multifield analysis in hydrocarbon provinces where amalgamation of the data provides information for the prediction for prospect evaluation and production strategies
- Rapid assessment of fault seal potential in frontier exploration areas