EUOGA First result from the EU shale gas assessment project

Transcription

1 1st Annual Conference of the European Science and Technology Network on UH Extraction EUOGA First result from the EU shale gas assessment project By Peter Britze GEUS 40 Years Listening to the Beat of the Earth

2 EUOGA European Unconventional Oil and Gas Assessment (EUOGA, pronounced YOGA) is an inventory of existing published knowledge on shale oil and gas resources in Europe.

3 Why Euoga? Example unconventional gas resources in Poland? SHALE GAS Shale gas recoverable resources of the onshore and offshore Ordovician Silurian Baltic Podlasie Lublin Basin Basin is estimated for maximum: 1920 Bcm (1.92 Tcm). Taking into account constraints on key parameters of the calculations, the higher probability range of recoverable shale gas resources are: Bcm Państwowy Instytut Geologiczny Państwowy Instytut Badawczy Source: ASSESSMENT OF SHALE GAS AND SHALE OIL RESOURCES OF THE LOWER PALEOZOIC BALTIC-PODLASIE- LUBLIN BASIN IN POLAND. First Report by P. Poprawa, 2011

4 Need for coordinated Pan-European assessment 4

5 Pan-European Assessment There is no reliable assessment on the European shale gas resources. EU is interested in a reliable assessment of Europe's unconventional oil and gas resources. Many geological surveys have made their own domestic assessments, but they are not comparable between countries. The overall goal with a pan-european assessment study is to get an independent, scientific based, coherent assessment of the shale gas resources. 5

6 Pan-European Assessment cont. Pan-European assessment on a basin by basin approach The European geological surveys has the data and knowledge on the specific shale stratigraphy, sedimentology, petrography etc. By combining the knowledge from each survey into a basin wide synthesis, knowledge is shared and the end product improved. 6

7 B.2.9.: Energy Policy support on unconventional gas and oil Support by JRC-IET in the area of unconventional gas and oil, especially by: Assessing Europe's resources in cooperation with geological surveys, especially by analysing results from current assessments conducted by Member States and from ongoing exploration projects.

8 EUOGA objectives European Unconventional Oil and Gas Assessment (EUOGA, pronounced YOGA) is an inventory of existing published knowledge on shale oil and gas resources in Europe. The project will: Compile data from European countries Define a common resource assessment methodology Make results available in an interactive GIS system Duration: September 1 st 2015 to March 31 st 2017

9 EUOGA 8 tasks The project is divided into : Task 1: Project management Task 2: Common EU methodology Task 3: Introductory overview of the current status and development of shale gas and oil in Europe Task 4: Geological resource analysis of shale gas and oil in Europe Task 5: Compilation of geological maps and web-portal Task 6: Overview of relevant shale layer characteristics Task 7: Resource estimation Task 8: Review of results, knowledge gaps and recommendations for future work

10 Project development Tender from JRC Deadline for proposal joint proposal by GEUS and TNO JRC sends contract to GEUS GEUS send invitation letter, LoI template and questionary to NGS Contract signed by JRC Meeting JRC, GEUS and TNO Final workplan T1 approved Subcontracts send out to NGS Kick-off meeting with NGS T3a submitted T2a submitted

11 EUOGA areal coverage

12 Project organisation Project Management (GEUS) Assessment Group (TNO) National Geological Surveys GIS database Group (GEUS) Assessment (TNO) Templates GIS database (GEUS) NGS DATA Basin 1 Basin 2 Basin 3 Shale A Shale B Shale D Shale B Shale C Shale A Shale D

13 Project progress plan Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep

14 T2a: Selected assessment method The selected method in EUOGA needs to fulfil several prerequisites: The focus of the study is on gas/oil initially in place (GIIP/OIIP) calculation; the selected method therefore needs to be able to calculate these parameters. It should address and visualize uncertainty on different scales. The method needs to be able to deal with a wide range of data availability and detail, both between the different basins but also within one basin. It should have the possibility to rescale the calculated GIIP/OIIP values to total recoverable resource (TRR) estimates To account for these prerequisites the proposed method for the assessment consists of four different steps.

15 The 4 assessment steps 1. General uncertainties of the presence of shale gas/oil Distribution of the shale in a basin Presence of organic matter 2. Ranking of shales per country/basin Area (km 2 ) Large > Medium Small <10000 Depth (m) Thickness (m) TOC Wt% Maturity %Ro Porosity Vol% Structural setting Depositional complexity > 100 > >10 Simple Simple > Moderate Moderate <1000 < 30 < < 5 Complex Complex

16 The 4 assessment steps 3. Subdivision into assessment units Depth Thickness Maturity (Immature/oil/gas transition) Mineralogy including Porosity and Permeability Biogenic versus Thermogenic gas systems Source rock quality (OM type and TOC content) 4. GIIP/OIIP calculation GIIP = GIIPfree + GIIPadsorbed GIIPfree = V * ϕ * sat * Bg GIIPadsorbed = V * ρ * G V : Volume, m 3, ϕ : Porosity, %, sat : Gas saturation, %, Bg : Gas formation volume factor, Rm 3 /Sm 3, ρ : Rock density, g/cm 3, G : Langmuir factor

17 T3a EUOGA questionaries' Questionary on data availability created by GEUS and TNO Send to NGS June 26 th Part 1: General status Part 2: Data availability per basin

18 Status for returned questionnaires

19 Unconventional hydrocarbon resource assessment

20 Activities related to unconventional hydrocarbon exploration Low level of activity: Permits have been issued or exploration wells have been drilled in the past. Medium level of activity: Permits have been granted and wells drilled. Future activates are expected High level of activity: Permits have been granted and wells drilled. Future activities will occur.

21 Political acceptability towards unconventional hydrocarbon exploration

22 Participating Contributing 22