5-day carbonate seminar ad copy[1]

8/9/2019 5-Day Carbonate Seminar Ad Copy[1]

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CARBONATES APPLIED TO

HYDROCARBON

EXPLORATION AND EXPLOITATION

AN INNOVATIVE, EXERCISED-BASED,

5-DAY SEMINAR

AVAILABLE ON A PRIVATE BASIS

Presented By

JEFFREY J. DRAVIS Ph D

Dravis Interests, Inc.

4133 TennysonHouston, Texas 77005

(713) 667-9844

WEB: www.dravisinterests.com

Copyrighted @ 2009 by Dravis Interests, Inc.


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CARBONATE RESERVOIRS

Carbonate rocks (limestones and dolostones) contain major oil

and gas deposits throughout the world:

* 33% of N. American Fields

* 50% of N. American Giant Fields

* ~40% of World’s Giant Fields

Discovering carbonate plays is predicated on a sound understanding

of the key controls that govern their occurrence and distribution, for

a given geological period. Seismic is but one part of the equation.

In addition, existing carbonate reservoirs can be exploited if one

understands the basic play relationships, how these reservoirs are

organized into depositional cycles, and how porosity and

permeability relate to depositional facies and cyclicity.


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PURPOSE

The purpose of this seminar is to introduce participants toestablished principles of carbonate sedimentology applied to

hydrocarbon exploration and exploitation. Hydrocarbon play

relationships associated with both shallow- and deep-marine

sequences are emphasized, stressing the interrelationship betweenreservoir, source, seal and trapping mechanism. How one zones a

carbonate reservoir to more effectively extract oil and gas is

discussed as well.


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APPROACH

This seminar is taught under the basic premise that to predict or

exploit plays, or even interpret seismic data and wells logs incarbonates, one needs a sound understanding of carbonate

depositional systems (facies) and potential pathways for porosity

and permeability evolution (diagenesis). One needs experience

with the rocks!

I have designed a five-day seminar that utilizes a sample-based

lecture and exercise format. The seminar includes various rock

description/interpretation exercises, a real exploration core

problem with a suite of logs, and a stratigraphic-facies

correlation exercise. Exercises tied to ten identical rock sets,

comprised of samples from around the world, reiterate principles

presented in lectures.


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WHO IS THIS SEMINAR FOR?

This seminar is intended for geologists, geophysicists, reservoir

engineers and supervisors working or planning to work carbonatesequences. This is an excellent refresher course for those who

have been away from carbonate projects for a while. Geologists

with siliciclastic backgrounds working mixed carbonate and

siliciclastic sequences benefit from this course as well.

After this seminar, each participant will be able to describe and

classify typical carbonate rocks, interpret facies relationships,

delineate stratigraphic sequences and correlate facies within them,

evaluate reservoir quality in limestones and dolostones, and betterunderstand subsurface carbonate play relationships.

Participants will be better prepared to initiate carbonate projects or

evaluate carbonate prospects brought to them.


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WHY A PRIVATE SEMINAR?

There are several benefits to conducting a private version of this

seminar in your office, or in a nearby facility:

First, it is more cost-effective. More employees can be trained at

one time.

Second, employees do not have to travel, further minimizingcosts.

Third, participants are near their offices and can handle more

easily any brushfires that arise.

Fourth, sensitive play concepts/strategies can be discussed incomplete confidentiality.

Fifth, teams of professionals (geologist, geophysicist, engineer)

can attend the seminar together. This fosters better

communication between disciplines and enhances team

work and productivity.


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HISTORICAL PERSPECTIVE

This seminar has been presented 69 times to industry, either on aprivate basis or in a public format open to all companies.

Private versions of this seminar have been presented to Tenneco,

Conoco (6 times), BP Canada, BP, Chevron, Exxon USA,

Canadian Hunter Ltd., Union Pacific Resources, Marathon Oil,

ADNOC, Chesapeake Energy (2 times), Occidental Oil & Gas (4

times), Baker Hughes (5 times), Suncor Energy, Devon Canada and

Enerplus Resources.


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INSTRUCTOR’S QUALIFICATIONS

Jeffrey J. Dravis (Ph D) is a technical consultant and instructor in

carbonate geology with over 30 years of worldwide industry andfield experience in all aspects of applied modern and ancient

carbonate geology. This experience includes 8 years with Exxon

Production Research Company where he headed up Exxon's

worldwide training efforts in carbonates. Since 1987, he has taught

168 basic and advanced applied carbonate seminars. He has

completed over 115 technical projects for clients, including

reservoir studies in Texas (Paleozoic & Mesozoic), Devonian of W.

Canada and Russia, Jurassic and Cretaceous of Gulf of Mexico, and

Cretaceous of Tunisia; and exploration studies of the JurassicSmackover/Haynesville and Cretaceous James Lime, Edwards and

Glen Rose Limestones, Devonian/Mississippian of W. Canada,

Pennsylvanian of Four Corners region, Mesozoic of western and

northern Africa, Permian Khuff of Qatar, and Tertiary off ofNicaragua. See web site for details.


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CLASSROOM FORMAT

Typical classroom view showing participants with notebook and rock

sets, as they work an exercise following a lecture.


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TYPICAL LAB EXERCISE

Participants work in groups of two, fostering discussion and

sharing experiences. The labs reinforce the formal lectures.

This format is more enjoyable and enhances learning.


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SEMINAR MATERIALS

Lectures are reinforced with exercises that use rock samples of cores

and outcrops, augmented by thin sections. Thin section photographs

are organized into a photo book. Each participant receives a CD

containing representative photos of hand samples & thin sections.


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DEMONSTRATION SAMPLES

Demonstration samples from all over the world, ranging in age from

Holocene to Cambrian, are used to illustrate typical examples

of carbonate skeletal and non-skeletal grains, texturesand sedimentary structures, porosity types, and evaporites.

Participants examine these samples before tackling the formal

exercises.


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CORE DESCRIPTION EXERCISE

Much of the fourth day of the seminar is devoted to a core

description exercise that utilizes a suite of cores from a lowerCretaceous reefal and oolitic sequence in S. Texas. Participants

discern depositional facies, cycles of sedimentation, and reservoir

quality and relate each to log response. They present their results to

the group. Each group discusses the plays evident in their core and

evaluates the bigger-scale controls for each.


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LECTURE SYLLABUS - 1

1. DISTINCTIVE ASPECTS OF CARBONATES

(Introduction to unique attributes of carbonate facies and controls on their deposition)

2. GRAIN TYPES

(Non-skeletal and skeletal components of limestones; criteria for their recognition and

environmental significance [exercise])

3. CARBONATE CLASSIFICATIONS AND SEDIMENTARY

STRUCTURES

(Review of popular classification schemes; discussion of typical sedimentary textures

and structures inherent to carbonates, and their significance for interpreting

environmental setting [exercise])


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4. LIMESTONE DIAGENESIS AND POROSITY EVOLUTION

(Basic geochemical principles governing diagenetic reactions; carbonate mineralogiesand their influence on diagenesis; diagenetic environments and associated processes

and products, including cementation and porosity modification in marine, fresh water

and burial diagenetic environments; diagenetic fabrics - their recognition and

significance; controls on carbonate diagenesis; guidelines for predicting porosity trends

in the subsurface; new techniques for more effective evaluation of diagenetic historyand reservoir quality [exercise])

5. DOLOMITIZATION AND POROSITY EVOLUTION

(Review of geochemical principles governing dolomite formation; controls on

dolomitization; review of standard models of dolomitization; porositydevelopment/modification associated with dolomitization; review of new techniques to

interpret facies and timing of porosity evolution in massive dolomites [exercise])

6. CARBONATE POROSITY TYPES

(Review of Choquette and Pray scheme for classifying carbonate pore types [exercise])


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LECTURE SYLLABUS - 37. CARBONATE FACIES MODELS

(Discussion of controls on facies occurrence and distribution; attributes and

criteria for recognition of basinal facies, foreslope facies, platform reef systems,oolitic sand complexes, platform-interior grapestones, subtidal pelleted sands and

lime muds, and carbonate tidal flats; Review of predictive end-member models:

the ramp and platform with a steeply-dipping margin; use of Holocene two-

dimensional models stressing comparative sedimentology, environmental

relationships, geometries and preservable facies attributes; review of classical

models of shallow-marine carbonate deposition from the Caribbean, Arabian

Gulf and Australia)

8. VERTICAL DEPOSITIONAL SEQUENCES AND CYCLICITY

(Facies components of ancient carbonate sequences and their upward-shoaling

character; recognition of depositional sequences and cyclicity in outcrops andcores; major controls on depositional cyclicity; geometries within depositional

cycles; geometries between depositional cycles; effects of progradation and

backstepping on carbonate facies distribution and geometry; guidelines for

predicting depositional cyclicity in ramps or steep-margined platform settings; use

of depositional cyclicity for local and regional time-stratigraphic correlation -implications for exploration and development geology)


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9. LOG AND SEISMIC EXPRESSION OF CARBONATES

(Use of wireline logs in delineating carbonate facies and depositional cyclicity;pitfalls in log pattern correlations; seismic expression of carbonate buildups and

other facies; pitfalls of seismic interpretation; evaluation of existing carbonate

sequence stratigraphic models)

10. CORE PROBLEM

(A suite of cores allows delegates the opportunity to interpret depositional facies,

break out depositional cycles and vertical sequences, tie facies and porosity to

cyclicity and log response, and assess regional depositional setting. In Texas, a suite

of superb Lower Cretaceous cores are borrowed from the Bureau of Economic

Geology in Austin and form the basis for the core problem. A suite of wireline logs

is used with these cores. In Calgary, cores from a Devonian sequence can be easilysubstituted, using the facilities at the A.E.U.B. If the client has a series of cores from

a basin of particular interest, these may be used as well)


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13. CARBONATE FACIES CORRELATION EXERCISE

(Exercise utilizing rock sample sets to reinforce key points discussed during theseminar. In this exercise, delegates are required to interpret facies and vertical

sequences based on samples from four wells, develop a map depicting the regional

physiographic setting, construct a time-stratigraphic cross section in which time-

equivalent facies packages are correlated, and evaluate the merits of potential play

relationships based on their cross section. This popular exercise challenges the

delegates to apply all the information they have learned during the seminar [exercise])

NOTE: Discussions on evaporites and carbonate source rocks are integrated into some of the topics noted

above. If desired, separate lectures on these two topics can be provided (see below):

EVAPORITES

(Controls on evaporite formation and distribution; review of environments of formation and models;depositional and diagenetic fabrics; interrelationships between evaporites and carbonate sequences)

CARBONATE SOURCE ROCKS

(Discussion of controls on preservation of organic matter in carbonate facies; review of models for predicting

carbonate source rock potential; carbonate source rock case studies, including discussion of how various

techniques and approaches aided a regional evaluation of hydrocarbon migration distances and pathways)


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TYPICAL SCHEDULE - DAY 1

8:00 Course Overview

8:30 Distinctive Aspects of Carbonates

9:00 Coffee Break

9:15 Carbonate Non-Skeletal Grains

10:00 Lab: Non-Skeletal Grains

11:00 Review of Non-Skeletal Grains Lab

11:30 Lunch12:30 Carbonate Skeletal Grains

1:15 Coffee Break

1:30 Carbonate Skeletal Grains - Continued

2:30 Lab: Skeletal Grains3:45 Review of Skeletal Grains Lab

4:15 Carbonate Sedimentary Structures - Show and Tell

5:00 Adjourn


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8:00 Carbonate Classifications

9:45 Lab: Carbonate Classifications

9:00 Coffee Break

9:15 Continuation of Lab

10:15 Review of Lab on Classifications

10:30 Limestone Diagenesis: Controls, Fabrics, Recognition,

and Porosity Relationships11:30 Lunch

12:30 Limestone Diagenesis - Continued

1:30 Coffee Break

1:45 Limestone Diagenesis - Continued2:30 Lab: Diagenesis of Limestones

3:45 Review of Limestone Diagenesis Lab

4:15 Dolomitization: Introduction and Models of Formation

5:00 Adjourn


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8:00 Carbonate Depositional Sequences and Cyclicity

9:30 Coffee Break 9:45 Log and Seismic Expression of Carbonates

11:15 Introduction to Core Exercise

11:30 Lunch

12:30 Continuation of Core Exercise3:00 Review of Core Exercise

5:00 Adjourn


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8:00 Carbonate Play Types

9:00 Coffee Break

9:15 Carbonate Play Types - Continued

10:00 Coffee Break

10:30 Use of Depositional Cyclicity to Zone Carbonate Reservoirs11:30 Lunch

12:30 Carbonate Facies Correlation Exercise

3:15 Review of Correlation Exercise

4:00 Adjourn


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COMMENTS FROM PAST SEMINAR ATTENDEES - 1

"This was one of the best 5-day courses I have taken - learned enough about carbonates

that I could start a carbonate project and know where to look for help and what type of

preparation I need, and that should help the company.”

“Instructor was very knowledgeable and though-provoking. He appeared thoroughly

competent in all aspects of carbonate geology, and possessed a very likable personality

and temperament. Works very well with people."

"It (this seminar) will help me as a development geologist to interject regional conceptsinto my interpretation."

Quality of Instruction: "Excellent. Speaker was very articulate, open to questions and

made an effort to walk around, ask questions and give advice during exercises."

"The core and laboratory exercises were based on real exploration examples and were

very effective.”

"This course is especially useful for the siliciclastic-background geologist who is

starting out in carbonates."


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"Considering that I have never had any training in carbonates..., the course was very

well run and organized and I learned a good deal about the subject matter."

"Good all around course directed at petroleum problems and objectives. A good

mixture of classical theory, case studies, new findings and practical applications."

" Overall, I really enjoyed the class and gained a great deal from it. I will strongly

recommend this course to other engineers."

"It is obvious that Jeff has taught this course many times - excellent command of

material and direction for the course. One of the best courses I've attended."

"Enjoyed material and became excited about learning again by your relaxed andexcellent teaching style."

"Jeff Dravis has put together the best geologically-oriented course I have taken in my

seven years with Conoco. Five stars!"


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“Having very limited background in carbonates, I now have a solid foundation

upon which I can better communicate with geologists in my group.”

“The class shows how previous models may have overlooked potential

reservoirs. We might be able to re-evaluate our areas and find new reserves.”

“I work very closely with geologists and geophysicists. When reviewing plays,

wells, cores, samples (drilling), this course will definitively help me interact withthem much better.”

“Authoritative, well-paced and clear instruction with clear, logical flow and good

balance between theory and practical exercises.”

COSTS TEXAS SEMINAR


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COSTS - TEXAS SEMINAR

A flat fee of $18, 900 USD is charged for this seminar when it is presented in

Houston or elsewhere within the State of Texas. The maximum number of

participants is limited to 20. This fee includes: the course manual (700+ pages,keyed to lectures; with color viewgraphs [notebooks cost ~$225 each to reproduce]);

all handouts; CD with color images of samples (rocks and thin sections) utilized in

exercises; instructor’s time for preparation (2+ days); time for teaching (5 days); and

any instructor’s travel and lodging expenses. Client is expected to provide a suitable

room for lectures, and a room for the core exercise (4th

day), as well asbeverage/coffee service each day. This fee also covers charges for rental and

shipping of cores (40 boxes+) from the Bureau of Economic Geology in Austin,

Texas. Full teaching fee ($18, 900) is payable 15 days before the start of the

seminar.

For a seminar with 15 people, the per person cost is well below what a comparable

public seminar would cost, and saves on travel and lodging costs.


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COSTS - OUTSIDE OF TEXAS

For seminars presented outside of Houston or in Canada, theseminar fee remains the same. For seminars presented at other

international locations, the fees are negotiable and will be

somewhat higher. In areas outside of Texas, clients usually must

substitute other cores for a core exercise (and assume costs), or fill

the time with additional lectures of their choice. This time can beused to review the client’s carbonate projects or play prospects.

Clients outside of Houston agree to reimburse expenses associated

with shipping of notebooks, handouts, and other exercise materials

(rock sets, photo books, etc.). Clients outside of Houston also agreeto reimburse instructor for reasonable travel (business class for

flights longer than 4 hours), and food and lodging expenses.


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SCHEDULING OF SEMINAR

Less than a one-month lead time is usually required to organize

and prepare for an in-house seminar, if it is presented in Texas.

Such a time framework also is contingent upon the instructor’s

technical consulting load at the time, and the cores being

available for rental from the Bureau of Economic Geology in

Austin.

For seminars held internationally, a one- to two-month lead time

is normally required, but this varies depending on the country.

Note that this seminar can be tailored to fit your needs and time

framework. Two or more companies may consider a combinedsponsorship of this seminar for their employees.

If you have any questions, please contact Jeff Dravis at (713)

667-9844 or by e-mail at [email protected]

Thank you for your time (July 2009)
mailto:[email protected]:[email protected]

5-day carbonate seminar ad copy[1]

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