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CURSOS

Structural Styles and Interpretation Techniques in Petroleum Exploration and Production

Dr. Shankar Mitra
Descripción del instructor

Holds the Monnett Chair and Professorship of Energy Resources at the University of Oklahoma. He received his Ph.D. degree in Structural Geology from Johns Hopkins University in 1977. He spent 19 years at ARCO Research and Exploration as Senior and Principal Research Geologist, Director of Structural Geology, Manager of Geological Research, Exploration Director, and Senior Exploration Research Advisor. His primary interests are in the development of structural concepts and methods and their application to exploration and production problems. He was an Associate Editor of the A.A.P.G. Bulletin for 9 years. He is a two-time recipient of A.A.P.G.’s Wallace Pratt Best Paper award and the Cam Sproule Best Paper award.

In-House

Compartir:
Fecha indefinida

ABOUT COURSE

 

COURSE OBJETIVE

This five-day course discusses common structural styles in sedimentary basins and the geometry and evolution of trap-forming structures associated with extensional, salt, compressive, strike-slip and inversion structures.  Techniques for constructing balanced cross sections, maps and 3-D interpretations through them are discussed in detail. Examples of trap-forming structures from a number of basins worldwide are used to illustrate the concepts. Problem sets provide hands on experience in interpreting and validating subsurface structures using surface, seismic, and well data.

 

WHO SHOULD ATTEND

Exploration and Production Geologists and Geophysicists.  The course is designed for geoscientists working in exploration and production, who need to understand the structural geometry of trap-forming structures, and apply structural techniques to make improved seismic interpretations, balanced cross sections, structural maps and 3-D depth models in complex areas.

 

 

CONTENT

 

1. INTRODUCTION

  • Concept of Comparative Structural Styles.
  • Controls of Mechanical Stratigraphy.
  • Structural Models and Methods in Interpretation.

 

2. BASIC PRINCIPLES AND METHODS

  • Fold Geometry and Mechanisms.
  • Fault Parameters and Interpretation.
  • Structure Maps.
  • Structural Cross Sections.
  • Structural Restoration and Validation.
  • Kinematic Reconstruction and Structural Evolution.
  • 3-D Structural Modeling and Interpretation.

 

3. RIFT STRUCTURES

  • Evolution of Rift Structures.
  • Symmetric Graben-Horst Structures.
  • Rotated Tilt Blocks.
  • Drape Folds.
  • Transfer Zones.
  • Structural Traps.

 

4. LISTRIC GROWTH FAULTS

  • Regional Framework of Passive Margins.
  • Mechanism of Rollover Folding.
  • Synthetic and Antithetic Faults.
  • Shale vs. Salt Cored Structures.
  • Transfer Zones.
  • Structural Trap Classification.

 

5. SALT STRUCTURES – AUTOCHTHONOUS

  • Mechanisms of Salt Tectonics.
  • Salt Rollers, Pillows, Diapirs, Bulbs and Canopies.
  • Progressive Evolution of Salt Structures.
  • Mechanisms – Active Diapirism vs. Downbuilding.
  • Salt-related Faults.
  • Classification of Structural Traps.

 

6. SALT STRUCTURES – ALLOCHTHONOUS

  • Evolution of Salt Sheets.
  • Regional vs. Counter regional Faults.
  • Growth Fault Systems and Minibasins.
  • Subsalt Structures.

 

7. FOLD AND THRUST BELTS

  • Fold and Thrust Geometry and Mechanisms.
  • Fold-Accommodation Faults.
  • Fault-Bend Folds.
  • Fault-Propagation Folds.
  • Detachment Folds.
  • Faulted-Detachment Folds.
  • Fold-Thrust Systems.
  • Wedge and Triangle Structures.
  • Compressive Growth Structures.
  • Map and 3-D Geometry.

 

8. FORELAND BASEMENT STRUCTURES

  • Regional Framework.
  • First- and Second- Order Structures.
  • Trishear Models.
  • Mode I –Basement Structures.
  • Mode II- Basement Structures.
  • Backlimb and Forelimb Dips.
  • Trap Styles.

 

9. INVERSION AND REACTIVATED STRUCTURES

  • Mechanisms of Inversion and Reactivation.
  • Characteristic Features- Separation and Growth Features.
  • Fault-Propagation Folding Inversion.
  • Fault-Bend Folding Inversion.

 

10. STRIKE-SLIP STRUCTURES

  • Distributed vs Decoupled Shear.
  • En echelon Folds, Faults, Riedel Shears.
  • Transpressional Structures.
  • Transtensional Structures.
  • Releasing Bends- Pull-Apart Basins.
  • Restraining Bends – Pushup Structures.
  • Criteria for Interpreting Strike-Slip Structures.
  • Strike-Slip Structural Traps.

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