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Bjarne Rafaelsen
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Joined: 14 Mar 2004
Posts: 325
Location: Harstad

PostPosted: 15 May 2008 06:57    Post subject: JULY08 - CARBONATE GEOLOGY FOR OIL AND GAS EXPLORATION Reply with quote


JULY 21-25, 2008

Registration: Ms Sylvia Reyer (E-Mail: Training

INSTRUCTOR: JEFFREY J. DRAVIS (Consultant - Dravis Interests, Inc., Houston)

FOR: Geologists, Geophysicists, Reservoir Engineers, Log Analysts and Managers.

GOAL: 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 dolomites, and better understand subsurface carbonate plays and reservoirs. This is an excellent refresher course for those who have not worked carbonates in a while.


This five-day, in-house seminar introduces participants to established principles of carbonate sedimentology applied to hydrocarbon exploration and development geology. Using a highly acclaimed, hands-on approach, each participant learns to describe typical carbonate rocks, delineate facies and sequences, evaluate reservoir quality, relate carbonates to log and seismic expression, better predict play relationships in the subsurface, and construct a time-stratigraphic facies framework essential for both accurate regional correlation of carbonate sequences and zonation of carbonate reservoirs. Lectures are reinforced with exercises and problems keyed to 10 identical sample rock sets, each containing 56 representative samples from around the world. A 750+ page notebook accompanies the course, as well as a reference CD with pictures of samples used in various exercises. This seminar has been presented to industry 58 times!

This seminar was presented in Vienna in June of 2006 and 2007 and was well received.


Jeffrey J. Dravis (Ph D) is a technical consultant and instructor in carbonate geology with
28 years of worldwide industry and field 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 over
125 basic and advanced carbonate seminars. Past consulting projects (>85 in number) include 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 in the Jurassic and Cretaceous of the U.S. Gulf Coast, Jurassic Deep Panuke gas trend, offshore Nova Scotia; Devonian/Mississippian of W. Canada, Pennsylvanian of Four Corners region, Mesozoic of western and northern Africa, and Tertiary, offshore Nicaragua.


DAY 1: Distinctive Aspects of Carbonates; Non-Skeletal grains; Skeletal Grains.
DAY 2: Carbonate Classifications and Structures; Limestone Diagenesis and Porosity Evolution; Introduction to Dolomitization.
DAY 3: Dolomitization and Porosity Evolution; Porosity Classification; Attributes of Shallow and Deep-Marine Facies; Models - Platform; Facies Models – Ramp. Discussion of trade winds as a driver of carbonate deposition.
DAY 4: Carbonate Depositional Sequences & Cyclicity; Log and Seismic Expression of Carbonates; Carbonate Source Rocks; Carbonates and Evaporites; Carbonate Play Types and Review of Case Studies DAY 5: Carbonate Play Types and Review of Case Studies (Continued); Use of Depositional Cyclicity to Zone Carbonate Reservoirs (Review of Two Case Studies); Carbonate Facies Correlation Exercise.


"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 concepts into 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."

Lab Exercises: "Imaginative way to draw it all together."

"This course is especially useful for the siliciclastic-background geologist who is starting out in carbonates."

"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 and excellent teaching style."

"The notebook was well thought out and made the course useful, as I now have a handy reference for different environments that I can draw upon in the future."

"Jeff Dravis has put together the best geologically-oriented course I have taken in my seven years with Conoco. Five stars!

“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 with them much better.”

“Authoritative, well-paced and clear instruction with clear, logical flow and good balance between theory and practical exercises.”

Questions About the Seminar? Contact Jeff Dravis : Questions About Jeff Dravis?
Bjarne Rafaelsen,
Carbonate Network Administrator
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