The Science Behind Structural Geology Software Tools

Transcription

1 The Science Behind Structural Geology Software Tools The Force Structural Geology Group are pleased to announce a halfday seminar focusing on the science behind some of the main software tools dedicated to structural interpretation in petroleum exploration. Some examples Presentations will focus on technical issues and their resolutions: Rationale for creating the software What did you wish to accomplish? Why does it work? Main challenges and pitfalls Case studies Future improvements

2 Oslo Wednesday May 7 Auditorium, Lilleakerveien 8, Lysaker Sandwich lunch at Seminar ends at Networking: Drinks and tapas served Stavanger Thursday May 8 Valhall, Prof. Olav Hanssens vei 10 Sandwich lunch at Seminar ends at Networking: Drinks and tapas served Preliminary Program 11:30 Participant registration and sandwich lunch 11:55 Welcome and introduction 12:00 TecMod, Geomodeling Solutions 12:30 3D Move, Midland Valley (awaiting final confirmation) 13:00 Coffee break SSR new generation AntTracking 14:00 GeoTeric, ffa 14:30 Coffee break and cake 15:00 RDR module in Petrel 15:30 TrapTester, Badleys 16:00 Networking, drinks and light food served This seminar is free for Force members.

3 Please notice the late warning for this seminar, which is already in two weeks. Registration on will open tomorrow, or you can send an to Heidi Hagland with the Force Secretariate on On behalf of the Organizing Committee for The Science Behind... Olav Blaich Michiel van Noorden Mikal Trulsvik Marinius Øygaren Heidi Hagland Sidsel Lindsø

4 Abstracts TechMod SSR A robust assessment of a sedimentary basin s structural and thermal history is the basis of any petroleum system analysis as it directly controls the timing of hydrocarbon maturation as well as likely migration pathways. The standard approach of constraining paleotemperatures and past vertical motion relies on a combination of backstripping/decompaction techniques and basin-scale thermal modelling. Yet, with current petroleum prospects moving further and further into frontier areas often characterized by deep-water conditions, extreme crustal thinning, and intrusive as well as extrusive igneous activity the classic approach may not suffice any longer. In such settings, feedbacks between large-scale geodynamic (e.g. the rift-todrift transition, magmatism, and differential thinning) and smaller-scale sedimentary basin (e.g. sediment blanketing, sill intrusions, and source rock maturation) processes become important. In this presentation, by showing examples from the Jan Mayen micro-continent and the Norway- Greenland conjugate volcanic margins, we illustrate how feedbacks between shallow and deep processes can be resolved with the software package TecMod, which is based on the coupling of a lithosphere-scale forward model and an inversion algorithm for automated parameter optimization. Automated Fault Extraction and Prediction Novel Fault Attributes and Methods Wiebke ATHMER and Aicha BOUNAIM, Schlumberger Stavanger Research Discontinuities in the rock influence fluid flow, and understanding fracture distribution and density is crucial for petroleum exploitation. In order to identify faults and fractures at various scales, a novel workflow is proposed. Large- to medium-scale faults are detected with new seismic attributes, enhanced with Ant Tracking technology, and extracted following either an automated point cloud approach or interactively with MutAnts, the latest Ant Tracker generation. Small-scale and sub-seismic fractures are then predicted hierarchically using a geomechanical forward model of deformations. Different iterations of simulations with an increasing number of input faults are performed, establishing a feedback-loop and interdependency between the numerical model and the seismic interpretation. The results can be used to identify fracture corridors, to better understand reservoir compartmentalization, or to improve geomechanical earth models.

5 Abstracts Badleys ffa The Science behind TrapTester Graham Yielding, Badley Geoscience Ltd, UK. TrapTester is Badleys flagship software package, which has a 25-year heritage. Collaboration with the Fault Analysis Group at Liverpool Univeristy in the late 1980s led to the development of FAPS (Fault Analysis Projection System), which was the world s first commercial system to use faultdisplacement patterns to assist seismic interpretation. TrapTester is the successor to FAPS and continues to lead innovation for others to follow. Key structural techniques pioneered in our software include: # fault-displacement analysis and fault-population statistics, # fault-seal analysis (e.g. SGR, column-height prediction), # fault-transmissibility multipliers for simulation models # fault-related fracture prediction, and stress control on fault/fracture permeability. Geoteric Typically, manual fault interpretations from seismic are simplistic when compared to the fractures and faults we observe in the rocks themselves. The resolution of seismic data as well as the need for simple fault planes in static models may mean that we lose some information about the character of our faults which may be useful if we want to derive a more detailed interpretation. In this presentation we show how we can achieve more detailed interpretations of our faults, in less time than manual interpretation methods, from seismic attributes and how the faults from our attributes more closely resemble the faults we observe in the real world. We consider normal faults and show that, while manual interpretation may result in a single fault plane, the faults from image processing techniques show a lot of the kinks and curves which can be related to linkage growth patterns and may give further insight on tip-throw relations across the faults.