Predicting Reservoir Distribution, Geometry & Quality

Maarten Wiemer 
8 days/sessions of 4 hours each

Business context

Throughout the exploration cycle, from play-based exploration to prospect maturation, from near field exploration to appraisal, a sound geological knowledge of reservoir presence (distribution and geometry) and quality distribution (reservoir effectivity) should underpin the regional and detailed prospect specific mapping, modelling and subsequent risk and volumetrics work.

The 'Predicting Reservoir Distribution, Geometry & Quality' course, aims at improving delegates predictive capabilities of reservoir recognition in terms of type, distribution and quality. Seismic Stratigraphic analysis and Case histories form a key part of the course.

Who should attend

This virtual instructor led training course aims at improving the conceptual geological understanding behind predicting presence and quality distribution of potential reservoirs, starting from seismic and sequence stratigraphic principles. The training material is derived from a variety of geological settings and comprises a mix of petroleum geology case histories and textbook material including seismic, log, core and outcrop data. Focus of the course is on predicting reservoir presence and reservoir effectivity.

Course content

  • Resolution, dimensionality and integration of different types of geological data.
  • Key Concepts of Seismic Stratigraphic Analysis: Understand stratigraphic surfaces and hierarchy and Depositional sequences and systems tracts.
  • PoroPerm systems (reservoir effectivity).
  • Seismic Stratigraphic and Depositional analysis of Deltaic reservoirs, Clastic Shelf reservoirs, Deep Water reservoirs and Alluvial reservoirs.
  • Stratigraphic traps.
  • Correlation do's and don'ts
  • Seismic Stratigraphy and Correlation Case histories a/o from China, Madagascar, Egypt, NW Borneo, Niger Delta, Spain and the North Sea

Learning, methods and tools

  • This VILT (Virtual Instructor Led Training) course makes use of live online interfaces.
  • Learning content is captured in shared presentation and exercise data such as seismic, log, core, outcrop and satellite images.
  • Method of teaching consists of a mix of lectures and interactive exercises, while stimulating individual, team and plenary discussion.
  • Each session -after session 1- will start with a recap of the previous session and some informal quiz questions.
  • Regular home assignments give the delegates the opportunity to deepen / broaden the learnings of the live sessions.
  • The trainer is available for coaching and answering questions via email outside live session hours.

Day by day programme

Session 1

  • Course Introduction and check VILT set-up (ca. 20 mins) 

Seismic  Stratigraphic Analysis 

1.1 Geological Data.(ca. 1hr)

  • Discussion on the nature of data used in subsurface geological evaluation.
  • Exercise: seismic noise or real geological data?

 Break 10 mins

 1.2 Stratigraphic Surfaces and Geometries. (ca. 1hr)

  • Discussion of stratigraphic surfaces from lamination to sequence boundaries.
  • Seismic stratigraphic nomenclature and analysis. 
  • Exercise: Tusan headland stratigraphic surfaces.

 Break 10 mins

 1.2 Stratigraphic Surfaces and Geometries cont'd.(ca. 1hr)

  • Exercise: Kutei seismic geometries.
  • Majunga RL poster discussion

Home Assignment introduction.(ca. 15 mins)

Exercise: seismic response of an unconformity.

 

Session 2

  • Recap session 1 - Kahoot MCQ  (ca. 20 mins)

Depositional Sequences and Systems Tracts

2.1 Depositional Sequences and Systems Tracts.(ca. 1hr)

  • Short discussion of definitions followed by discussion of accommodation space (relative sea level) and sediment supply and their controls.
  • Exercise: Nova Scotia seismic line.

 Break 10 mins

 2.1 Depositional Sequences and Systems Tracts cont'd.(ca. 1hr)

  • Systems Tract analysis, nomenclature and patterns.
  • Exercise: Tarraco.

 Break 10 mins

 2.1 Depositional Sequences and Systems Tracts cont'd.(ca. 1hr)

  • Discussion on parasequences, definitions and stacking patterns.
  • Exercise: shallow clastics.

Home Assignment introduction.(ca. 15mins)

Exercise: systems tract analysis

 

Session 3

  • Recap session 2 - Kahoot MCQ  (ca. 20 mins)                                          

Reservoir Quality Analysis

3.1 PoroPerm Systems.(ca. 1hr)

  • Discusses the nature of, and the controls on, reservoir porosity and permeability.
  • Exercise: porosity estimation

 Break 10 mins

 3.1 PoroPerm Systems cont'd.(ca. 1hr)

  • Depositional texture, burial diagenesis, regional setting controls.
  • Exercise: W2E

 Break 10 mins

 3.1 PoroPerm Systems cont'd.(ca. 1hr)

  • A basin-centred gas example.
  • Exercise: VRE uplift

Home Assignment introduction.(ca. 15 mins)

Exercise: creating a burial graph diagram

 

Session 4

  • Recap session 3 with Kahoot MCQ  (ca. 20 mins)                                          

Depositional System Analysis

 4.1 Alluvial Systems.(ca. 1hr)

  • Alluvial systems - dimensions and controls.
  • Meandering  and braided systems.
  • Exercise: Montanana outcrop.
  • Seismic expression.

Break 10 mins

4.1 Alluvial Systems cont'd.(ca. 1hr)

  • Reservoir body geometries and stacking trends.
  • Exercise: Manandaza well log and core.

 Break 10 mins

 4.1 Alluvial Systems cont'd. (ca. 1hr)

  • Dryland fan examples.

Home Assignment introduction.(ca. 15 mins)

Exercise: analyse Cycle II correlation in terms of surfaces and facies.

 

Session 5

  • Recap session 4 - Kahoot MCQ  (ca. 20 mins)   

Depositional System Analysis

 5.1Deltaic Systems.(ca. 1hr)

  • Delta dimensions, processes and classification.
  • Reservoir body geometries.
  • Exercise: Tulip reservoir-body contouring.

Break 10 mins

5.1 Deltaic Systems cont'd.(ca. 1hr)

  • Growth Faults
  • Correlation and stacking trends.
  • Exercise: AR well log correlation

Break 10 mins

5.1 Deltaic Systems cont'd.(ca. 1hr)

  • Large channel complexes.

Home Assignment introduction.(ca. 15 mins)

Exercise: Tsiribina map analysis in terms of facies distribution and systems tracts.

 

Session 6

  • Recap session 5 - Kahoot MCQ  (ca. 20 mins)                                          

Depositional System Analysis

6.1 Clastic Shelf Systems (ca 1hr)

  • Facies patterns and reservoir distribution
  • Reservoir / seal stacking patterns.

Break 10 mins

6.1 Clastic Shelf Systems cont'd.(ca 1hr)

  • Shelf-top (stranded) and  shelf-edge deltas, incised valley fills.
  • Exercise:  New Jersey shelf.

Break 10 mins

6.1 Clastic Shelf Systems cont'd.(ca 1hr)

  • 'Drowned shelf' or TST / MF settings.
  • Exercise: stratigraphic trap configurations

Home Assignment introduction. (ca. 15 mins)

Exercise: Sarawak clastic shelf.

 

Session 7

  • Recap session 6- Kahoot MCQ  (ca. 20 mins) 

Depositional System Analysis 

7.1 Deep Water Systems(ca. 1hr)

  • DW depositional systems and processes.
  • Exercise: Tabernas outcrop interpretation. 

Break 10 mins 

7.1 Deep Water Systems cont'd.(ca. 1hr)

  • Reservoir facies types  and architectural elements.
  • Exercise: West Africa slope channel complex seismic.

Break 10 mins

7.1 Deep Water Systems cont'd.(ca. 1hr)

  • DW facies correlation challenges.
  • Exercise: GOM mini-basin seismic and well log correlation.

Home Assignment introduction.(ca. 15 mins)

Exercise: DW seismic / biostratigraphy correlation.

 

Session 8

  • Recap session 7 - Kahoot MCQ  (ca. 15 mins)                                          

Stratigraphic Traps and Case Histories

5.1  Stratigraphic Traps(ca. 1hr)

  • Stratigraphic Trap definition and examples
  • Exercise: Tabernas outcrop stratigraphic trapping geometry.

Break 10 mins

Stratigraphic Traps cont'd.(ca. 1hr)

  • Stratigraphic traps and systems tracts.
  • Exercise:. Labuan strat trap - seismic analysis

Break 10 mins

Well Log Correlation

6.1 Correlation do's and don'ts. (ca. 1hr)

  • Pitfalls
  • Correlation set-up
  • Exercise: kebab well log correlation

Course wrap-up.(ca. 15mins)