Evaluating Fault and Cap Rock Seals

This volume constitutes the proceedings of the AAPG Hedberg conference on seals held in Barossa Valley, South Australia, in 2002. The key driver for both the Hedberg conference and this publication was the recognition that knowledge of risk in the estimation of sealing capacity and fault-seal potential is important in making judgments at the exploration, appraisal, and development stages of the petroleum business. In addition, incorporating seal risk in the overall assessment of hydrocarbons in place can affect decisions to drill prospects and the location of appraisal and development wells, as well as reserve estimation. Improved methods to estimate seal capacity and fault integrity can lead to savings in well costs, improved recoveries through optimum placement of wells, and improved estimates of hydrocarbon in place. This volume contains 18 chapters that reflect the spectrum of presentations at the conference. The knowledge imparted by these chapters will be a window on the state of seal knowledge at this juncture of time and includes topics such as seal failure related to basin-scale processes, the role of geomechanics in seals, and the economic evaluation of prospects with a top seal risk.
Quantifying the Impact of Fault Modeling Parameters on Production Forecasting for Clastic Reservoirs
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Published:January 01, 2005
Abstract
Recent developments in structural modeling allow the detailed representation of the fault geometries, and their impact on reservoir behavior can be fully assessed. However, it is unclear how much the most advanced developments, such as sub-seismic fault and fault-seal modeling, contribute to a better understanding of a field. This study was designed to set up a workflow for assessing the impact of structural uncertainty and to test the workflow on a synthetic model to analyze the production response to this uncertainty.
A synthetic oil reservoir model was built, using a simplified tilted block structure, which was then modified with...
- Arctic Ocean
- Atlantic Ocean
- Bajocian
- clastic rocks
- dynamic properties
- faults
- geophysical methods
- Gullfaks Field
- Haltenbanken
- Jurassic
- Mesozoic
- Middle Jurassic
- naturally fractured reservoirs
- North Atlantic
- North Sea
- Norwegian Sea
- oil and gas fields
- permeability
- petrography
- petroleum engineering
- porosity
- prediction
- production
- productivity
- reservoir properties
- reservoir rocks
- sedimentary rocks
- seismic methods
- simulation
- Tarbert Formation
- Viking Graben