Oil and Gas

Oil and Gas | Reservoir Development

Clastic Reservoir Characterisation for Appraisal and Development (Southern Pyrenees, Spain)

Course Code: N432
Instructors:  Stephanie KapeGary Nichols
Course Outline:  Download
Format and Duration
5 days

Summary

This field course integrates clastic sedimentology predictive models with reservoir characterisation for appraisal and field development, using case studies from the Cenozoic of the southern Pyrenees, Spain. Variations in depositional architecture are considered in terms of linked depositional systems including fluvial, coastal, shallow marine, slope and deepwater facies. The impacts of differing architectures on field development are considered, together with practical guidance on the choices available for building static and dynamic models.

This course facilitates integration between geoscientists, petrophysicists and engineers working in multi-disciplinary asset teams.

Duration and Training Method

A five-day field course in the southern Pyrenean foreland basins. The course is a mixture of field presentations, fieldwork including sedimentological exercises, modelling exercises/discussions and short classroom sessions.

Course Overview

Participants will learn to:
  1. Evaluate the sedimentology and basin fill architecture of a linked continental, shallow marine and deepwater depositional system.
  2. Predict significant changes in sedimentology and stratigraphic architecture, both  laterally and up or down dip in clastic reservoir systems.
  3. Integrate the interactions of the controls on sandstone body architecture.
  4. Assess the impact of depositional architectures, flow zones; and sedimentary heterogeneity on; potential recovery in different hydrocarbon fluid and development scenarios.
  5. Plan how both static and dynamic data can be incorporated to characterise depositional architecture.
  6. Evaluate and rate different modelling options for different architectures, fluids and development scenarios.
  7. Manage the issues of up-scaling in heterogenous clastic systems and select appropriate techniques to use in different scenarios.
Variations in stratigraphic architecture occur over short distances in clastic successions, both laterally and up or down dip, and strongly impact the production performance of a hydrocarbon reservoir. An understanding of the issues involved in developing different architectures in clastic systems and the decisions required to model these heterogenous reservoirs are critical to predicting the long-term production behaviour.

The southern Pyrenean foreland basins in northern Spain formed as a series of flexural basins south of the Pyrenean orogenic belt. The Pyrenees developed in the Cenozoic as a result of crustal shortening between the Eurasian plate to the north and the Iberian sub­plate to the south. Three linked foreland basins developed in the Eocene and within these are preserved the elements of a through-going depositional system from fluvial facies in the east to deep-water deposits in the west. The basins are separated by lateral thrust ramps across which slope deposits developed. These coeval Eocene strata provide an outstanding opportunity to examine variations down-system in clastic depositional facies.

In the Miocene renewed thrusting uplifted the Eocene units and a new foredeep developed further to the south. This later foreland basin is the Ebro Basin within which there are exceptionally-well exposed deposits of large distributive fluvial systems of early Miocene age. These provide examples of different architectures of fluvial channel and overbank facies and changes in reservoir characteristics can be examined within channel belts, in stacked channel successions and as down-system variations over tens of kilometres.

Exercises carried out at outcrops and in classroom sessions illustrate the influence of sedimentological architecture on modelling options for different development scenarios.  Predictive facies models will be discussed and their application to understanding the controls on the architectures developed and preserved in the rock record, from both an exploration and development perspective. Understanding the controls on fluid flow behaviour within the reservoir is key to determining how to model it for different development scenarios. The course will explore how to use static and dynamic data to differentiate between sedimentary architectures in the subsurface and examine production challenges posed by different sedimentary stacking and sedimentary depositional structures. Questions of scale, from core to log to outcrop to simulation model and then how to upscale in complex heterogenous environments will be discussed in the field and classroom.

Itinerary

Day 0

  • Arrival and travel to hotel in Tremp

Day 1

Fieldwork in Tremp area

  • Basin introduction
  • Tidally-influenced reservoir sandstone bodies in the Ager Basin
  • Sandy braided fluvial facies in a confined valley setting, Tremp Basin
  • Proximal pebbly braided river facies at the margin of the Ebro Basin
  • A series of stops in shallow marine and coastal facies

Overnight at hotel in Graus

Day 2

Fieldwork in the Ainsa area

  • Reservoir sedimentology of offshore and barrier bar complexes
  • Large-scale architecture of submarine fan channel complexes
  • Turbidite reservoir facies in a proximal, channelised setting
  • Core store visit of turbidite reservoir facies

Overnight at hotel in Ainsa

Day 3

Fieldwork in the Jaca area

  • Prograding shoreline and deltaic facies in mixed carbonate/clastic successions
  • Turbidite successions in submarine fan lobe complexes
  • Basin margin facies in an internally-drained basin setting

Overnight at hotel, Murillo de Gallego

Day 4

Fieldwork in the Ebro Basin, Huesca area

  • Reservoir-scale fluvial channel and overbank successions
  • Heterogeneity of meandering river deposits
  • Basin-margin facies variations and alluvial fan sedimentology

Overnight at hotel, Murillo de Gallego

Day 5

Fieldwork in Ebro Basin and return to Barcelona

  • Basin-margin fluvial facies and downstream facies transitions
  • Scale of reservoir heterogeneity in fluvial successions
  • Channel and overbank fluvial reservoir architecture and connectivity

Return to Barcelona

The course is aimed at geoscientists, petrophysicists and reservoir engineers who wish to better understand clastic depositonal systems and the practical application of that knowledge in the generation of effective static and dynamic models. Multi-disciplinary asset teams would benefit from attendance as a group. Managers and team leaders of such technical teams are also welcome.  

Stephanie Kape

Background
Dr. Stephanie Kape has over 25 years of experience in the Oil and Gas Industry and is currently an independent consultant geologist at Salar Geoscience Ltd.

After graduating, Stephanie spent 5 years working as a consultant structural geologist with Midland Valley in Glasgow, working on a range of exploration and development projects worldwide. In 2001, Stephanie joined Amerada Hess Ltd as a production geologist based in Aberdeen. She moved to Canadian Natural Resources in 2003 as a Development Geologist and worked the mature North Sea portfolio.

In 2005, Stephanie joined BG Group in Reading working the HPHT exploration, development and appraisal portfolio of the UK Central North Sea. In this role she developed a number of models for fluvial reservoirs, working on the issues and predicting reservoir deliverability. In 2008 Stephanie joined the Subsurface Assurance Team in BG, as part of an internal technical auditor, reviewing the company’s exploration, appraisal and development projects worldwide. A six month secondment to the Brazil Development team working on carbonates followed and a two year stint in the Global New Ventures team and as exploration team lead within the Europe E&P business at BG.

Throughout her career as a development geologist, Stephanie has worked with reservoir models and has acted as an internal focus for Reservoir modelling. She has maintained an interest in fluvial sedimentology and the integration of this with other disciplines to build effective predictive models, publishing and presenting at conferences.

Affiliations and Accreditation
PhD University of Birmingham - Geology
BSc University of Manchester - Geology
C.Geol - Chartered Geologist
PESGB
Geological Society

Courses Taught
D530: Shore to Shelf Depositional Systems (Virtual Outcrops)
D534: Delta Plain to Base of Slope Reservoir Systems: Outcrop, Seismic, and Production Analogues in a Sequence Stratigraphic Context
N108: Exploration and Geological Model Development in Fluvial Reservoirs
N412: A Critical Guide to Reservoir Appraisal and Development
N415: Reservoir Characterisation for Appraisal and Development
N432: Clastic Reservoir Characterisation for Appraisal and Development (Southern Pyrenees, Spain)

Gary Nichols

Background
Gary is responsible for the strategy and technical operations of the company worldwide and is based at RPS Energy offices in Woking, Surrey.

Before joining RPS Energy to work with the Nautilus Training Alliance, Gary taught at Royal Holloway University of London and the University Centre on Svalbard covering undergraduate and MSc courses in Sedimentology, Sequence Stratigraphy, Petroleum Geology and Sedimentary Basins plus MSc Petroleum Geoscience courses in Clastic sedimentology, Sequence Stratigraphy and Sedimentary Basin models.

Key Research Topics include clastic sedimentology and sedimentary basin analysis;  climatic and tectonic controls on sedimentation; fluvial sedimentology; basin-scale patterns of sedimentation and the architecture of basin-fill successions; endorheic basins. Field studies have been carried out in flexural basins in Spain, Greece, USA and Spitsbergen, extensional basins in Madagascar, Greece, northern Thailand, the Red Sea and the Gulf of Aden and in arc-related settings in Antarctica, Indonesia, the Philippines and Malaysia. Detailed sedimentological studies include alluvial fan and fluvial sedimentation in continental basins and the reservoir characteristics of fluvial successions. Gary has published over 100 scientific papers and a widely-used textbook 'Sedimentology and Stratigraphy'. He is currently President of the Society for Sedimentary Geology (SEPM).

Affiliations and Accreditation
PhD University of Cambridge
BSc London University, Honors
C.Geol - Chartered Geologist

Courses Taught
N108: Exploration and Geological Model Development in Fluvial Reservoirs (Pyrenees, Spain)
N155: Introduction to Clastic Depositional Systems: a Petroleum Perspective
N269: Sequence Stratigraphy and Subsurface Prediction: Methods, Limitations and New Developments (Isle of Wight, UK)
N387: Exploration and Development in Fluvio-Lacustrine Systems
N403: Reservoir Sedimentology of Fluvial - Shallow Marine Facies (Isle of Wight, UK)
N418: Tectonics, Sedimentology and Stratigraphy of Coal-Bearing Basins
N432: Clastic Reservoir Characterisation for Appraisal and Development (Southern Pyrenees, Spain)
W017: North Sea Reservoirs Series - Triassic Reservoirs Overview (Distance Learning)

 

CEU: 4 Continuing Education Units
PDH: 40 Professional Development Hours
Certificate: Certificate Issued Upon Completion
RPS is accredited by the International Association for Continuing Education and Training (IACET) and is authorized to issue the IACET CEU. We comply with the ANSI/IACET Standard, which is recognised internationally as a standard of excellence in instructional practices.
We issue a Certificate of Attendance which verifies the number of training hours attended. Our courses are generally accepted by most professional licensing boards/associations towards continuing education credits. Please check with your licensing board to determine if the courses and certificate of attendance meet their specific criteria.