2003-2004 Number 8 www.mbgs.org March 2004

EVENTS

March 4, 2004: AIPG Chapter meeting. “Use of Environmental Isotopes With a Case Study on Their Use With Geochemical Fingerprinting to Identify and Discern a Landfill Gas Source for Groundwater Impacts” by Mr. Eric Wallis, Senior Manager of Waste Management, Inc. at Comfort Inn, 2424 South Mission St., Mt.Pleasant, MI

March 16, 2004: MBGS-SPE Meeting will be held Tuesday, March 16 at the Holiday Inn South in Lansing. SPE Distinguished Lecturer Dr. James W. Crafton will be speaking on “Why Shut the Well In? You’ve Already Got the Data ”.

March 19, 2004: The Michigan PTTC and the Northern Michigan SPE present a one-day workshop with an exhibition area and core display; “Michigan Field Experiences--Focus on the Niagaran” 8am to 5pm at the Holiday Inn, Mt. Pleasant, Michigan.

April 14, 2004: MBGS Meeting.

April 18-21, 2004: AAPG Annual Meeting, ”Embrace the Future – Celebrate the Past” at the Dallas Convention Center, Dallas, Texas; for more information go online at www.aapg.org/meetings/dallas04 . The pre-registration deadline is March 17, 2004.

April 30 – May 2, 2004: Northeast Lower Peninsula Field Conference. For more information see the registration from in this Newsletter or the MBGS website at: www.mbgs.org

September 26-29, 2004: Society of Petroleum Engineers annual meeting Houston, Texas

October 3-6, 2004: 33^rdAnnual AAPG Eastern Section Meeting Ramada Plaza Hotel

Columbus, Ohio. The theme of this year’s meeting is “Still Economic after all these Years.”

April 2005: Grand Canyon Field Trip; See announcement in the Newsletter.

A Few Good People

Please consider running for office as part of the 2004-2005 MBGS Executive Committee. The Society is only as good as its members and in order to remain vibrant the MBGS needs active members to provide leadership. The elected officers are President, Vice-President, Secretary, Treasurer, and Business Manager. This year we are also looking for a Newsletter Editor. Contact any officer if you are interested.

MBGS Meeting

March 16, 2004 (TUESDAY)

Location: Holiday Inn (South)

6820 S. Cedar St., Lansing, MI.

Schedule: 5:00 to 6:00 PM Social Hour

6:00 PM Dinner

Presentation after dinner

Cost $30.00/member $15.00 Student (includes dinner)

Topic: “Why Shut the Well In? You’ve Already Got the Data”.

Dr. James W. Craft,

SPE Distinguished Lecturer

MBGS Dinner Meeting Reservation

Name______________________

Number attending _____ Society_____________

Enclosed Registration Fee ______

Please make checks payable to SPE and return to Paul Laubitz by March 12, 2004

Paul Laubitz

ANR Pipeline Company

27725 Stansbury Blvd., Suite 200

Farmington Hills, Michigan 48334

Ph: 248-994-4049 Fax: 248-994-4149

E-mail: paul.laubitz@elpaso.com

2003-2004 MBGS Officers

The Executive Committee meeting minutes are available on the website.

PRESIDENT: TOM GODBOLD, GLMD, DEQ

Ph: 241-1545, fax 517-241-1595 godboldt@michigan.gov

VICE PRESIDENT: MIKE GRAMMER, WMU GEOLOGY DEPARTMENT

Ph: 269-387-3667, fax 269-387-5513 mike.grammer@wmich.edu

SECRETARY: TOM WELLMAN, GLMD, DEQ

Ph: 517-241-1530, fax 517-241-1595 wellmant@michigan.gov

TREASURER & PUBLICATIONS: TOM HOANE, FMFM, DNR

Ph: Bus 517-241-3769, fax 517-373-2443 hoanet@michigan. gov

BUSINESS MANAGER: PAT POLI, MPSC

Gas Division

Ph: Bus 517-241-6141, Fax 517-241-6071 pmpoli@Michigan.gov

PAST-PRESIDENT: MILT GERE, FMFM, DNR

Ph: 517-335-3249, fax 517-373-2443 gerem@michigan.gov

CO-FIELDTRIP DIRECTORS:

MARK WOLLENSAK, CPG

HAMP, MATHEWS & ASSOC, Inc.

Ph: 517-641-7333 Fax 517-641-7337

Cell 517-719-8321

wollensak@voyager.net

LEONARD ESPINOSA, FMFM, DNR

Ph: 517-335-3248, Fax 517-373-2443 espinosl@michigan. gov

NEWSLETTER EDITOR: STAN IDZIAK, SWMD, DEQ

Ph: 517-784-8956, idziaks@michigan. gov

ELECTRONIC PUBLICATIONS, MARK WOLLENSAK (see above)

WEBMASTER: GREG VARNUM

me@gregvarnum.com

University Talks and Seminars Websites

Western Michigan University,

www.wmich.edu/geology/SeminarGeos.html

Michigan State University,

www.glg.msu.edu/news/lectures.html

University of Michigan, Turner Lecture Series,

www.geo.lsa.umich.edu/announce/turner02b.html

Michigan AIPG Section website: www.aipg-mi.org.

MEETING CANCELLATION POLICY

Monthly meetings will be automatically cancelled whenever the National Weather Service issues a "Storm Warning" for the Lansing area. If driving conditions are poor but a "Warning" has not been issued please contact any member of the Executive Committee for the status of the meeting.

MICHIGAN BASIN GEOLOGICAL SOCIETY PUBLICATIONS

Historical CD #1: Nine out-of-print publications from 1949 through 1965 and 1998, Devonian to Silurian Rock Fieldtrips to MI, WI, IL and Ontario, 2000, $15

Historical CD #2: Four out-of-print publications from 1947, 1959, 1983 and 1991, Northern Devonian and UP Fieldtrips in MI, 2001, $10

Historical CD #3: Six out-of-print publications from 1947. 1959, 1983 and 1991, Northern Devonian and UP Fieldtrips in MI, 2001, $12

Special Price - Historical CD #1, #2 & #3, $30

Stratigraphic Lexicon for Michigan, 2001, prepared by MBGS and published by DEQ, 56 pp., chart, $2.65 picked up or $4 mailed, Can be ordered from MBGS or Geological Survey Div. of the DEQ

Price Includes postage, handling and any applicable sales tax. MBGS Members receive a 10% discount on MBGS publications.

Orders for publications should be prepaid in U.S. Funds and addressed to:

MBGS - Publications

c/o Dept. of Geological Sciences

206 Natural Sciences Building

Michigan State University

East Lansing, Michigan 48824-1115

MBGS Mug and Jacket Sale

The Michigan Basin Geological Society is offering mugs and jackets with the society logo for sale. The mugs are $5.00 each. The jackets are $60.00 each plus postage. Please contact Dan McGuire at: Phone (517) 772-5219, Fax (517) 772-7021, or danmcguire@sensible-net.com. Remember to include the correct size of the jacket and the quantity of each item. Checks should be made out to the MBGS.

Society of Petroleum Engineers Northern Michigan Section and PTTC

Jointly present

Michigan Field Experiences--Focus on the Niagaran

March 19, 2004, 8am to 5pm

At the Holiday Inn, Mt. Pleasant, Michigan

One-Day Workshop with Exhibition Area and Core Display

Join us for the day and hear Michigan geologists, engineers, and service providers sharing

• field experiences,

• both good and bad case histories

• geologic overviews, and projections

• their own technologies

Examine a spectacular 600-foot long Niagaran reef core from Oceana County

Participate in the exhibit area of products, services, and opportunities

PRESENTERS

--Mike Barratt, Barratt Consulting, LLC, will show how analysis of economic risks and benefits is critical to the success of any drilling program. Mike will demonstrate his standardized risk evaluation procedure to compare markedly different drilling opportunities. A Devonian horizontal well and a vertical Niagaran well are used as case histories to illustrate the practical aspects of such an evaluation system.

--Tim Brock, Brock Engineering, will discuss the Dover 33 and 36 fields—A review of Michigan’s CO2 floods. Tim will present performance and productive history of these two fields since commencement of CO2 injection.

--Alejandro Coy, Underbalanced Drilling Engineer for Weatherford Underbalanced Systems, will present a field case study which showed how underbalanced drilling consistently resulted in production rates exceeding expectations in the Texas panhandle. The results are even more significant considering the low cost environment in which the wells were competing and where conventional drilling has had difficulty with marginal economics. He will share the well design and UB model considerations, taking into account the geological, reservoir depletion and water proximity challenges. He will also discuss some Michigan case histories.

--Doug Elenbaas, Prinicipal Engineer of Reservoir Services, ElPaso, will discuss production logging in gas storage wells. ANR Pipeline utilizes over 800 gas storage wells in Michigan for gas injection and withdrawal. Production logging has been used on occasion to identify the highly productive intervals in storage zones for both vertically and horizontally completed wells. Doug will present production logging case histories for Niagaran formation gas storage wells.

--John Fowler, Polaris Energy, will share his experience in an attempted redevelopment of a Niagaran reef reservoir using 3D seismic and horizontal drilling in Kalkaska County. After a 3D seismic survey strongly suggested that the reef extended well beyond the area that would have been drained by the initial well, a horizontal well was drilled to explore the potential. John will share how good practice and promising data did not result in an economic success.

--Wayne Goodman, North Lights Energy and Timothy R. Maness, Maness Petroleum Corporation will discuss Niagaran pinnacle reef development and distribution in Mason and Oceana Counties. Following an early successful reef play in Mason County, several periods of drilling attempting to expand the play have met with challenges and inconsistent results. To better understand the geology of this region, Maness Petroleum and Northern Lights Energy conducted a comprehensive regional study. Key findings of that effort will be presented. Wayne and Tim think that considerable opportunity remains to discover significant natural gas reserves in this area. Success in this relatively lightly explored sub-play will be dependent on utilizing detailed geological work consistent with a regional model coupled with high-quality geophysical data. 3-D data offers the optimal seismic solution to this complex problem, but properly designed swath and conventional 2-D programs can also be useful and may provide a more cost-effective approach.

--Dr. William (Bill) Harrison, Director, Michigan Basin Core Research Laboratory, Western Michigan University, will review the history of horizontal drilling in Michigan's Niagaran reef reservoirs. Because more horizontal wells have been drilled in the Niagaran reefs than in all the other Michigan oil and gas reservoirs combined, an extensive database of 260 wells is available to evaluate the use of this technology for continued exploitation of this reservoir. Bill will discuss the overall success of horizontal wells throughout the play and show case histories with detailed production history data. Bill and WMU geology graduate student Tony Sandomierski will exhibit a 600’ section of core from the Amoco-Miller Fox 1-11 well and give their interpretations about it. This core shows one of the longest and most complete sections available from Michigan Niagaran reefs.

--Fred Metzger, Manager of Storage and Pipeline Services, and Edward Dereniewski, Senior Reservoir Engineer of Michigan Consolidated Gas Company, will discuss renewal of a historic North American storage complex—the Six Lakes Field. Michigan Consolidated Gas Company (MichCon) has been storing natural gas in the state of Michigan since the mid-1940s. MichCon’s Six Lakes field was converted in 1953 from a natural gas producing reservoir to a storage facility. Deliverability decline is the most common problem in the storage industry, and from 1968 to 1993, the deliverability of Six Lakes declined at an annual rate of 5.6%. Since 1970, various efforts have been made to restore this declining deliverability. The most cost-effective method has proven to be the drilling of single and multi-lateral horizontal wells. The current rate of success shows that one horizontal well replaces eight verticals. Total field performance has improved due to reduced water production. Horizontal wells have proven highly effective through reduced land requirements, improved field performance, and lower operation costs.

--Allen Modroo, Modroo Geophysical, will present, “Niagaran Reef Seismic; It’s More Complicated than you Think.” The Silurian pinnacle reefs of Michigan are usually regarded as being simple underground “haystacks” containing crude oil or natural gas, and the exploration techniques are likewise viewed as such. Nothing could be farther from the truth. Seismically these vertically tall yet horizontally small targets manifest themselves as a loss of data. This is a dangerous reason to drill a well. 2D seismic data is full of acquisition, processing, and interpretation problems. These problems sometimes result in false seismic “reef” anomalies and hence disappointing drill results. 3D seismic can have some of the above problems but when done correctly will yield results approaching 80% success for reef detection via the drill bit. Allen will present the key to successful exploration of Niagaran reefs: correctly designing, acquiring, processing and interpreting 3d data volumes that will tie geological control and aid in identifying these elusive yet productive oil and natural gas targets.

--Dr. A. S. (Buddy) Wylie, Research Scientist/Engineer and Dr. James Wood, Geology Professor, Michigan Technological University, will present “ Imaging of Niagaran Pinnacle Reef Fields using Well Log Tomography and 3D Visualization.” Movies and 3D images of core and log curve amplitudes from data-rich Niagaran Reefs can be used to show the distribution of permeability and porosity in these fields. Integrating core and log amplitude animations with rock types and formation tops produces reservoir models that can be used as tools to visualize reservoir properties in other Niagaran Reef Fields.

Workshop fee: $75 if received by us by March 11. After that, it's $95. You'll get a workbook, refreshments, and lunch. Sorry, but we can’t “save” seats without payment.

Booth fee: $200 and that includes one person who can also attend the workshop.

Cancellations: We'll refund in full for cancellations received by March 11. After that, we'll refund if a paid participant takes your place.

Time and Place: March 19, 2004, from 8am to 5pm at the Holiday Inn, 5665 E. Pickard Road, Mt. Pleasant, MI 48858. For rooms, ask for SPE/PTTC rates at (800) 292-8891. Maps at www.hiresort.com

Workshop Registration Form below:

Michigan Field Experiences--Focus on the Niagaran

NAME________________________________

COMPANY_____________________________________

ADDRESS_____________________________________________________

PHONE___________________

e-mail________________________________

(please print)

________Reserve a booth (We don’t have many, so please reserve early.)

How are you paying? (please check one payment type)

____By Credit Card: (please circle one card type) Visa MasterCard *

Card No.____________________________ Exp. Date _______

____By check—made payable to “WMU Geosciences Department” and mail it to:

Workshop

Geosciences Department

Western Michigan University

Kalamazoo, MI 49008-5241

*Sorry, we can't take Discover or American Express.

To register with a credit card by phone, please call Kathy Wright at (269) 387-5486 or Linda Harrison at (269) 387-8633 or e-mail linda.harrison@wmich.edu, or send a fax to (269) 387-5513.

Workshop fee: $75 if received by us by March 11. After that, it's $95. You'll get a workbook, refreshments, and lunch. Sorry, we can’t “save” seats without payment.

Booth fee: $200 and that includes one person who can also attend the workshop.

Cancellations: We'll refund in full for cancellations received by March 11. After that, we'll refund if a paid participant takes your place.

For more information, please contact Bill Harrison at (269) 387-8633 or at harrison@wmich.edu

PTTC gratefully acknowledges that its primary funding comes through the U. S. Department of Energy’s (DOE) National Energy Technology Laboratory (NETL). PTTC also appreciates the support of several state governments, universities, and state geological surveys, mainly through the Regional Lead Organizations. Industry donations and in-kind contributions play an important role, and are tax-deductible. Together, cost share from all sources provides over 50% of PTTC’s financial support. PTTC is a national not-for-profit corporation under IRS Code section 501(c)3.

Grand Canyon Field Trip

Join MBGS members and follow John Wesley Powell’s infamous expedition through the Grand Canyon. This is an eight-day excursion that will produce lifelong memories of Grandeur. This Geo Tour will cover 188 miles in a raft through the canyon, from Marble Canyon to Whitmore Wash, we will view Paleozoics and Precambrian rocks while floating this world-class river. Numerous side hikes daily to geologic locations as well as some spectacular scenery. Nights will be spent camping along the banks of the river just as John Wesley Powell did more than 130 years ago. This is an AAPG sponsored excursion with the MBGS contingent joining the expedition in spring of 2005. Reservations will have to be booked in April of 2004 for this 2005 trip. For more information contact Mark Nida 517- 241-6136 or Mark Wollensak.

We at MBGS have just received a message that MBGS could run our own trip if we can get 10-14 members to sign up and send one boat down the canyon. By doing so, this may also provide us a discount. We are looking for the 2005 trip to take place April or early May. The cost will be approximately $2200 plus transportation cost to Las Vegas. If you are interested in joining MBGS members on this trip, email Mark Nida at mcnida@michigan.gov or Mark Wollensak at mark@mbgs.org. It is urgent that you contact us as soon as possible if you have an interest in attending the trip of a lifetime.

GEOLOGY SCHOLARSHIPS AVAILABLE

The Michigan Basin Geological Society (MBGS) is announcing the availability of Geology Scholarships to be awarded in May 2004. Up to $500 will be awarded in cash to one or more applicants.

These scholarships will be based on merit, need, and relevance of the area of interest to current and future needs of society or to how this area of interest increases the geological community’s understanding of the topic.

The MBGS is affiliated with the American Association of Petroleum Geologists (AAPG) and uses their Grants-in-Aid form to review applications. An application may be printed or filled out on-line at http://www.aapg.org/foundation/gia/forms.cfm Please disregard the deadline dates on that application page and DO NOT SUBMIT the application to AAPG. Since this is an MBGS scholarship, not all portions of the form may be relevant. Applications may be made on behalf of specific graduate studies, undergraduate areas of study, field camp, or summer classes. An endorsement of the Chairperson of the Department is not necessary but an endorsement of a geology professor is required (found at the end of the form).

APPLICATIONS MUST BE RECEIVED BY MAY 3, 2004.

Please mail application forms to:

Thomas Wellman

Geological and Land Management Division, DEQ

P.O. Box 30256

Lansing, MI 48909-7756

E-mail applications may be submitted to wellmant@michigan.gov but must be followed up by the written copy of the signature of the applicant and endorsement of a geology professor. Please address all questions to me at wellmant@michigan.gov or contact me at 517-241-1530.

The AAPG is starting its annual membership drive. Cash awards go to the top 3 local societies which recruit the most members.

February 16, 2004

Mr. Tom Godbold, President

Michigan Basin Geological Society

Dept. of Geological Sciences, MSU

East Lansing, MI 48824

Dear Mr. Godbold:

Once again, AAPG is sponsoring a membership drive to increase membership and to enhance the communication of member benefits to current and potential members. To this end, former AAPG President Dan Smith has asked me to represent the Eastern Section on a new Ad Hoc Committee for “Membership Enhancement and Development” (MED). My job is to initiate a grass-roots movement in the Eastern Section to recruit new AAPG members. I am in the process of contacting each affiliated Society President, and perhaps one delegate from each society, to find a volunteer within their group to work with me.

You already have received a letter from Dan Smith explaining the contest. The purpose of this letter is to inform you of my involvement, and to request that you appoint a member of the Michigan Basin Geological Society to work with me. The MBGS Delegate, or anyone you choose to appoint, will join with representatives from the other Eastern Section affiliated societies to form a society network to expand AAPG membership by communicating the benefits of AAPG membership to potential members. Of course this person will do his or her recruiting within your local society, and will communicate the results to me. For this effort to succeed, I believe that it must take place at the local level through one-on-one interaction.

As a first step, we need to encourage 100% of the members of our affiliated societies to become AAPG members as well as local society members. Therefore, the first task for the person who accepts this assignment, and for me, is to compare a list of society members with a list of AAPG members who reside in your area. I can get the membership list from AAPG and compare it to a list you provide, or I can send the AAPG list to your society appointee, if you prefer not to share the list of local members.

I should point out at this time that this is a two-way street. By providing you with a list of AAPG members in your geographical area, you can use the list to increase your own membership in the Michigan Basin Geological Society.

Also, we need to remind your society members that AAPG represents more than just petroleum geology. The Energy Minerals Division includes many coal geologists, and “takes ownership” of coal, coal-bed methane, uranium, geothermal, gas hydrates, gas shales, oil sands, etc. The Division of Environmental Geosciences has many members who are hydrologists or environmental geologists, and the Division of Professional Affairs certifies coal geologists as well as petroleum geologists.

As soon as I receive my e-mail packet from AAPG Headquarters in Tulsa, I will send you more information, i.e., a member value pyramid and membership applications in electronic form. In addition, AAPG headquarters will provide each affiliated society with a tabletop display that can be used to promote the membership drive. This display can be set up at each meeting of your society.

So, what I am requesting at the moment, is the name of the person from the Michigan Basin Geological Society who will represent you in this society network, and an address where AAPG can send the tabletop display.

Thank you for your assistance in this effort. If you would like any further information on this committee, please contact me.

Yours truly,

Douglas G. Patchen

Please contact any of the MBGS Officers if you are interested in participating in this effort.

AIPG Chapter Meeting

March 4, 2004: AIPG Chapter meeting. “Use of Environmental Isotopes with a Case Study on Their Use with Geochemical Fingerprinting to Identify and Discern a Landfill Gas Source for Groundwater Impacts”

By Mr. Eric Wallis, Senior Manager of Waste Management, Inc.

Location: Comfort Inn, 2424 South Mission St., Mt.

Pleasant, MI 48858 (989) 772-4000.

Schedule: 5:30-6:00 PM Cash Bar, 6:00 PM Dinner, Speaker 7:00.

Cost: Students $25.00, Members $35.00, Non-members $40.00.

Dinner choices: RSVP with choice of: Champaign Chicken or Pork Loin buffet.

RSVP by March 27. Telephone or e-mail registration with Name, Company, Address, Phone, Fax, Amount Due, and Dinner Choice to AIPG-Michigan Section, c/o Mr. Scott

Cesarz, Superior Environmental, Inc. Contact Telephone is 248-596-1170, the FAX is 248-596-1175, and email address is: cesarzs@superiorenvironmental.com.

Reservations not cancelled by March 1 will be billed. Checks should be made out to AIPG-Michigan.

Why Shut the Well in?

You’ve Already Got the Data

Dr. James W. Crafton

Abstract

Production data analysis is emerging as one of the oil and gas industry’s most powerful tools for well performance evaluation. The use of a theoretically rigorous production data analysis tool is allowing operators to find significant additional financial value in their wells with data they already have in hand. Accurate analysis of that production data can be performed very quickly, at several levels of detail, and at less cost than traditional solutions of well testing and simulation. The method makes possible the observation of time-dependent skin damage, changing transmissibility, interference, liquid loading, and drainage geometry—as well as the quantitative evaluation of effective fracture length, drainage volume, permeability thickness, skin, and recoverable reserves. Production data analysis is readily accomplished with data, already acquired in the normal course of business, although most electronic data collection systems already record with “near well-test” quality resolution. Even very low-resolution monthly data often provides reliable interpretations. By contrast, traditional shut-in well testing incurs costs that include lost production, well services fees, and (very often) formation damage.

The primary focus of this presentation is to show a variety of the diagnostic signatures that arise in performing production data analysis. The presentation will show actual well history examples including both oil and gas wells, high and low permeability, onshore and offshore, from several different countries, although the origin, operator, etc. will not be discussed. Examples with different signatures arising from water production, such as an active aquifer, a failed completion, and free water production from a producing zone will be shown. One of the examples shows the impact of a shut-in on the productivity of a gas well in multiphase flow. The impact of reservoir geometry on well performance is observable in one example, and another shows the effect of changing transmissibility versus changing skin. The theoretical basis for the method will be presented with simulation generated examples. In most cases, the visual assessment will be concluded with a quantitative evaluation.

Biography: Dr. James W. Crafton

Dr. Crafton received the Doctor of Philosophy from the University of Tulsa in 1975, after attending the University of Missouri at Rolla for the B.S. and University of Oklahoma for an M.S. in Petroleum Engineering. In addition to employment with Gulf Research and Development Corp., Pan American Petroleum Corp., and Texaco, he worked for Trunkline Gas Company and Panhandle Eastern Pipe Line, Co., where he progressed to the position of Chief Reservoir Engineer. He then formed CBW Services, an 18 person consulting firm specializing in multi-disciplinary reservoir studies. In 1982, the opportunity to teach at the Colorado School of Mines arose, where he continued the development of inter-disciplinary programs, including unique graduate level courses, was instrumental in the U.S. DOE Geoscience Forums, and was awarded the Henry B. Matson Technical Achievement Award for work on Water-Drive Gas Reservoir Management. In 1991, he was awarded a patent for a "fluid conveyor system", which was the basis for the formation of Crafton Lift Systems, Inc., a company attempting to develop low-cost artificial lift equipment. After working with Snyder Oil Company as their Staff Consultant, he formed Performance Sciences, Inc., a consultancy specializing in the evaluation of production data for evaluation of reservoir performance and completion performance efficiency. His areas of technical specialization have been in reservoir simulation, pressure transient behavior, well completion methods, well stimulation and geologic reservoir characterization. He is a member of the Society of Petroleum Engineers, the American Association of Petroleum Geologists, Phi Kappa Phi, Sigma Gamma Epsilon, Tau Beta Pi, Sigma Xi, Pi Epsilon Tau and others. He has authored over 30 technical papers and books, and taught numerous industry short courses.