Short Courses

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Petrophysical Analysis and Integrated Approaches to the Study of Carbonate Reservoirs

INSTRUCTOR S :

Lynn Watney, Kansas Geological Survey, Lawrence, KS; Michael Holmes, Digital Formation, Inc., Denver, CO

INSTRUCTOR LOOKUP

DATES:

April 16 - 18, 2013

LOCATION:

Austin, TX

TUITION:

Member: $1,275.00 • Nonmember $1,475.00
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increases to $1475/$1675 after 3/18/2013; includes course notes and refreshments. No refunds for cancellations after 3/18/2013.

LIMIT:

50 people

CONTENT:

2.2 CEU What is a CEU?

Who Should Attend

This course is for geologists, geophysicists, engineers and multi-disciplinary team members needing to learn more about exploration in carbonate reservoirs. The course is designed to be cross disciplinary, and of interest to anyone involved in reservoir description. For geologists/ geophysicists the interest will be the contribution petrophysics has to understand the variability of carbonate facies in a reservoir context. For engineers, the course will give insight as to the geological and petrophysical attributes controlling reservoir variability.

Objectives

Upon completion of this course, you will be able to:

• determine lithology
• compare moldic porosity with intercrystalline/interparticle porosity
• determine the influence of gas on porosity log responses
• determine rock typing with correlations to facies descriptions
• define mobile from capillary bound water, changing rock quality by level, and changing porosity permeability relations
• make use of a method to quantify adsorbed and free hydrocarbons in shale reservoirs,
• use rock physics modeling to differentiate brittle from ductile sequences
• evaluate the role of structural reactivation and apply to refining location and properties of carbonate reservoirs
• apply process-based analogs and interpretations to improve geomodels
• use petrofacies approach to better define key properties of complex carbonate reservoirs (e.g., water saturations, volumetrics, ROIP, establishing permeability correlations and predicting fluid flow)
• use an integrated approach for more accurate and valid geomodels

Content

This course is divided into two parts. The first part, on Petrophysical Analysis, is designed to encompass the spectrum of information that can be derived from examination of standard open-hole logs. Basic petrophysical interpretation to calculate porosity, shale volume, fluid saturation, grain density, and permeability will be covered. Advanced analysis will include detailed examination of porosity log responses, relations between porosity and water saturation, and a discussion of capillary characteristics.

The second part, on Integrated Approaches, provides an overview of key factors controlling oil and gas distribution in carbonate reservoirs in the greater Midcontinent USA. A top down approach is taken starting with regional structural and tectonic framework followed by sequence stratigraphic framework and reservoir architecture through analysis of core, well, and seismic data. A description of common reservoir lithofacies and their recent analogs is followed by a review of petrofacies concept and pore typing using petrophysical techniques grounded on core studies.

Case studies will demonstrate integrated approaches to reservoir characterization and modeling of 1) ooid and grainstone shoals; 2) phylloid algal mounds and related lithofacies; 3) low resistivity microporous chert and dolomitic reservoirs, and 4) karst and fracture modified reservoirs. Methodologies and workflows reviewed in these case studies include geosteering and evaluation of horizontal wells and optimizing carbon storage utilization and management. The overall goal of this section is to provide tools for efficient and effective re-exploration and development.