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TGS GPS - APPA Project Brochure
- 1. © 2014 TGS-NOPEC GEOPHYSICAL COMPANY ASA. ALL RIGHTS RESERVED. Stratigraphic Harmonization of African Sedimentary Basins See the energy at TGS.com Regional Harmonization of Stratigraphic Nomenclature and Associated Studies
- 2. 4/14 © 2014 TGS-NOPEC GEOPHYSICAL COMPANY ASA. ALL RIGHTS RESERVED. See the energy at TGS.com Project Description The APPA Stratigraphic Harmonization of African Sedimentary Basins Project is one of the major studies included in the 8th Action Program (2012 – 2017) of the African Petroleum Producers Association (APPA). This Program was adopted in March 2012 in Cairo, Egypt by the 29th Session of the APPA Council of Ministers in line with APPA’s organizational objective of fostering technical co-operation between member countries. The decision to commission a harmonization study was taken to recognize the trans-border nature of many of Africa’s hydrocarbon- bearing sedimentary basins and to foster effective cross-border geoscientific data exchange between APPA member countries. In order to meet this objective, the project will involve the compilation, interpretation and normalization of geological and geophysical data from all APPA member countries. The resulting data will be used to build a revised geological model using harmonized nomenclature for the following three international project zones: Intracratonic Zone This zone covers the onshore sedimentary basins in Angola, Cameroon, the Republic of Congo, the Democratic Republic of Congo, Gabon, Nigeria, Niger and Chad. Gulf of Guinea Zone This zone incorporates the onshore and offshore connecting sedimentary basin in Angola, Cameroon, Equatorial Guinea, Gabon, Nigeria, the Democratic republic of Congo and the Republic of Congo. West Africa Zone This zone covers the offshore and onshore sedimentary basins in the Republic of Benin, Côte d’Ivoire, Ghana, Togo and western offshore Nigeria. Key Objectives ƒ Harmonize the Stratigraphic Nomenclature of the Sedimentary Basins within APPA member countries. ƒ Compile and correlate data at sub-regional level for a better understanding of the geological characteristics of the sedimentary basins in Africa. ƒ Improve the technical skills and expertise of oil and gas industry professionals in the countries concerned. Example stratigraphic chart Example well log panel
- 3. Harmonization Project Deliverables Key project deliverables for each zone will include: Study Report Project Dataset Each Study Report will contain the following: ƒ The regional maps and geological correlation data of all the sedimentary basins within the study zone ƒ Maps defining the extent and main structural elements of each basin ƒ A review of the tectonic evolution of the study zone ƒ Common harmonized stratigraphic nomenclature of the Sedimentary Basins of the zone concerned in conformity with the code of the International Union of Geological Sciences ƒ Stratigraphic column for each sub-basin The dataset will contain the following interpreted / enhanced data for each country in the study zone: ƒ The litho-stratigraphic data for each country ƒ The bio-stratigraphic data for each country ƒ The chrono-stratigraphic data for each country ƒ Interpreted/enhanced seismic data and by-products for each country ƒ Enhanced well log data Project Delivery Project data will be packaged and delivered using TGS’ Facies Map Browser (FMB) platform. Associated Studies Additional beneficial studies such as sequence stratigraphic studies, play fairway analyses, petrophysical analyses and seismic data libraries are planned for each member country. Associated Studies Deliverables Petrophysics Seismic Database Sequence Stratigraphic Study Play Fairway Analysis 1. Shale / clay volume 2. Reservoir and net pay characteristics 3. Variable grain density 4. Porosity Ø (total and effective) 5. Permeability where cored 6. Connate water resistivity [Rw ] 7. Water saturation [Sw ] 8. Core data when available 9. Pressure data when available 10. Report detailing the processing and parameters used 1. Vectorisation of legacy paper based seismic. 2. SEGY Conversion of legacy seismic 3. Structural interpretation of legacy seismic 4. Incorporation of gravity & magnetics data into study. (where available) 1. Interpreted borehole stratigraphy 2. High quality log suite 3. Lithology with cements and modifiers 4. Main environment of deposition 5. Associated depositional facies 6. Paleo Bathymetry 7. Burial History 8. TD Pairs and Synthetics 9. Gross Depositional Environment Maps 1. Gross Depositional Environment Maps 2. Seismic Facies Maps 3. Reservoir Distribution Risk Maps 4. Top Seal Distribution Risk Maps 5. Reservoir Temperature Risk Maps 6. Common Risk Segment Maps 4/14 © 2014 TGS-NOPEC GEOPHYSICAL COMPANY ASA. ALL RIGHTS RESERVED. See the energy at TGS.com
- 4. Key Benefits ƒƒ Gives exploration companies of all sizes cost-effective access to a multi-national dataset and basin scale regional analysis. ƒƒ Provides a consistent framework for tracking and coordinating exploration efforts at a regional level. ƒƒ It provides a homogeneous framework for play modelling and exploration work. ƒƒ It fast tracks understanding of basin development and shortens exploration cycle time. ƒƒ Provides a standardized nomenclature to improve the effectiveness of cross-border data exchanges and new ventures analysis. ƒƒ Saves company time and money by allowing in-house technical resources to concentrate on high value prospect definition work. Example well correlation panel © 2014 TGS-NOPEC GEOPHYSICAL COMPANY ASA. ALL RIGHTS RESERVED. See the energy at TGS.com Commercial Details The project is planned as a multi-client study supported by oil and gas industry sponsors. It is a multi-year program with deliverables scheduled at regular intervals. Sponsors will be required to support the entire program through an annual subscription fee. Sponsors will receive all of the deliverables for their zone of interest. TGS is looking for expressions of interest from potential sponsors in order to commence work as planned in Q1 2016. UK Tel: +44 208 339 4200 Email: gps-sales@tgs.com For more information, contact TGS at: