Play Fairway Analysis and Petroleum System Modeling. Bernard Colletta Exploration Project Director

Transcription

1 Play Fairway Analysis and Petroleum System Modeling Bernard Colletta Exploration Project Director

2 Objectives Promote further exploration of the Nova Scotia margin Better understanding of the geology of the offshore domain New evaluation of the petroleum potential Improve data quality

3 Deliverables MAPS Interpreted seismic sections Lithology interpreted sections Sand Atlas (paper and digital format) of the Nova Scotia margin including: Stratigraphic models 1D +2D +3D Petroleum system modeling CRS Maps Structural maps Gross Depositional Environment maps Petroleum System Modeling results Common Risk Segment Map Yet to find Well log interpretation Shale Salt 3D depositional environment

4 Progress of the PFA project Plate tectonics Biostratigraphy Geochemistry Seismic data Seismic reprocessing GXT Seismic reprocessing TGS Salt structuration Sedimentology PFA

5 Progress of the PFA project Plate tectonics Biostratigraphy Geochemistry Seismic data Seismic reprocessing GXT Seismic reprocessing TGS Salt structuration Sedimentology PFA Finished Preliminary results

6 Main Tasks of the PFA project Phase 1 : interpretation Phase 2 : modeling

7 Petroleum system elements and processes Paleotemperature Burial history Traps Seals Reservoirs Source rocks Entrapment Gas Cap Oil Water Seal Rock Reservoir Rock Migration Source Rock 120 F 50 C Generation 350 F 180 C 2480 AAPG document

8 Petroleum system event chart Paleozoic Mesozoic Cenozoic D M P P T R J K P N North Slope, Alaska Bird, Western North Slope 2. East-central North Slope 1 2 Relative timing Geologic Time-Scale Petroleum System Events Source Rock Reservoir Rock Seal Rock Overburden Trap Formation Generation, Migration, and Accumulation Preservation Critical Moment

9 Petroleum system workflow Stratigraphic modeling DIONISOS Pressure calibration/prediction TEMIS 2D/3D HC migration efficiency TEMIS 2D PRESSURE Expelled Oil (million tons) Geological model TEMIS 1D/2D/3D, CERES 0 KX2-WL-CVX1 & KX2-F1B-S3 KX1 South channel West F1B West NK4/NK5 2 Expelled HC Drainage areas TEMIS 3D Seismic interpretation Risk maps TEMPERATURE Structural restoration VITRINITE Thermal/maturity calibration TEMIS 1D Source rock evaluation TEMIS 3D Play ranking & uncertainties TEMIS 3D, QUBS

10 Biostrat project Stratigraphic model Ages of sequence sequence boundaries boundaries? Facies / deposition environment? Facies / deposition environment? Changes in stratigraphic chart? CNSOPB

11 Salt tectonic s project Seismic interpretation Salt weld s&f eede rs? res Early salt structu Ini tia ls alt thi ck ne ss & pin ch ou t??

12 Plate tectonic s project Evolution through time of the NS Margin History of the Atlantic opening? Significance of the ECMA? Significance of the ECMA? From Stampfli & Borel (2002). Crustal architecture? Magnetic anomaly map Crustal scale section Funck et al. 2004

13 Sedimento. project Reservoir and source rocks distribution Dionisos Supply Source(s) Source(s) of sediments sediments? Subsidence Sedimentary Sedimentary facies facies in in wells wells? Evolution through time?

14 Temperature and burial history TEMPERATURE Erosional Erosional or thermal thermal events events Apatite fission track project VITRINITE 2D burial evolution Burial history

15 Main questions to be answered What is the age of the different units recognized in the wells and on seismic lines? What is the role of the Jurassic salt in the structures and traps development? What is the evolution of the margin at crustal / lithospheric scale? Where are the reservoirs and sources rocks? What is the tectonic and thermal evolution of the Nova Scotia margin?.

16 Academic Panel on Special Projects Integration of top world class academic research into an industry exploration project Andrew MacRae Saint Mary s University Steven Ings Dalhousie University Prof. Marcos Zentilli PGeo-NS