geophysical society of houston

VOL. 37, NO. 1 NEWSLETTER AUGUST 2002

Geophysical Societyof Houston

GSH Meetings _____________________

GSH Technical Luncheon

September 17 ....................................... 1

SIG Meetings ............................................ 6

SEG 2002 ............................................... 11

I N S I D E T H I S I S S U E

President’sColumnBy Dan EbromGSH President, [email protected]

A new year’s resolutionOne of the features of the GSH is

that our board serves from July 1 of oneyear to June 30 of the next. That givesthe society a “year” that starts in themiddle of summer, and gives me a sec-ond opportunity for making some NewYear’s resolutions. Like most resolutions,these will probably be observed more inthe breach than in the observance, butwe’ve all got to have goals.

A first resolution is to have moretechnical seminars, especially short“one-off” meetings on topics of currentinterest. We’ve already had some sug-gestions, such as a half-day AVO sym-posium. And there has been enoughinterest in rock physics that we are start-ing a new Special Interest Group (SIG)on this topic. (I’ll be chairing this SIG

President’s Column continued on page 6

Please Join us for the

2002ICEBREAKEROn Thursday, September 12 at the HESS BuildingFrom 5 pm to 7 pm @ 5430 WestheimerGSH will provide hors d’oeuvres plus a cash bar.$12 with reservation. $15 at the door.Call, email or FAX reservations to the GSH office.

Renew YourMembership

NOW!!!Call the GSH office with

credit card.

Its that easy!

Articles and Comments ______________

President’s Column................................... 1

Honors & Awards Ceremony..................... 4

Geophysical Auxiliary................................ 7

Saltwater Tournament Results .................. 8

Sporting Clays......................................... 10

Date: Tuesday, September 17Time: 11:30 AMLocation: Hess Bldg.Cost: $20 reservation, $25 at

the door

Title: AVO & Beyond AVO

Speaker: Subhashis Mallick,Western Geco

Abstract:AVO and BeyondSubhashis Mallick, WesternGeco

Use of prestack data for quantita-tive analysis of hydrocarbon reservoirshas gained popularity over the past de-cades. Most of these quantitative stud-ies rely on the seismic reflection ampli-tude variation with offset or AVO analy-sis. AVO makes a simple assumption

Technical Luncheon continued on page 9

Technical Luncheon

2 Geophysical Society of Houston August 2002

GEOPHYSICAL SOCIETY OF HOUSTONJoan Henshaw, Office Manager • 10575 Katy Freeway, Suite 290 • Houston, TX 77024 • Office Hours 8 a.m. - 5 p.m.

Phone: (713) 463-9477 • Fax: (713) 463-9160 • Event Reservations Number: (713) 463-8920email: [email protected] • website - http://gsh.seg.org

GSH Board of Directors = GSH Executive Committee + SEG Section Representatives

PHONE FAX E-MAIL

PRESIDENT .................................... Dan Ebrom .................... 281/366-3011 .......... 281/366-7561 .......... [email protected]

Corp. Relations ....................... Pat Starich .................... 281/654-5036 .......... 281/654-5766 .......... [email protected]

Historian ................................ Art Ross ........................ 281/360-9331 ............................................ [email protected]

Honors & Awards ................... John Sumner ................. 713/431-6796 .......... 713/431-6094 .......... [email protected]

Museum ................................. Tom Fulton .................... 281/242-1806 ............................................ [email protected]

Nominating ............................. Dave Agarwal ................ 281/920-4450 .......... 281/920-1576 .......... [email protected]

Scholarship Liason .................. Art Ross ........................ 281/360-9331 ............................................ [email protected]

PRES.-ELECT ................................. Roy E. Clark, Jr. ............ 281/654-5651 .......... 281/654-5891 .......... [email protected]

Academic Liaison .................... Hua-Wei Zhou ............... 713/743-3424 .......... 713/784-7906 .......... [email protected]

Advisory ................................. Lee Lawyer ................... 281/531/5347 ........................................... [email protected]

Employment Ref ..................... Sam LeRoy ................... 281/556-9766 .......... 281/556-9778 .......... [email protected]

Finance .................................. Shane Coperude ............ 281/275-7514 .......... 281/276-7660 .......... [email protected].

Office ..................................... Hugh Hardy .................. 713/729-9208 .......... 713/726-0456 .......... [email protected]

Volunteers .............................. Jerry Donalson .............. 713/464-6188 .......... 713/464-6440 .......... [email protected]

FIRST VP ....................................... Pat Peck ........................ 713/461-7178 .......... 713/461-2788 .......... [email protected]

Continuing Education .............. Mike Fenton .................. 713/215-7452 ............................................ [email protected]

Speakers ................................ Jim Schuelke ................. 713/431/7620 ......... 713/431-6333 .......... [email protected]

Tech Breakfasts ....................... Karl Seibert ................... 713/339-1616 ............................................ [email protected]

Tech Luncheons ...................... Seth Berman ................. 281/275-7506 ............................................ [email protected]

Tech Committee ...................... Roy E. Clark, Jr. ............ 281/654-5651 .......... 281/654-5891 .......... [email protected]

SIGS

Data Processing ...................... Karl Seibert ................... 713/339-1616 ............................................ [email protected]

Potential Fields ........................ Afif Saad ....................... 281/342-8575 ............................................ [email protected]

............................................. Bob Van Nieuwenhuise ... 281/679-2208 ............................................ [email protected]

Reservoir Geophysics .............. Alan Foley .......................................................................................... [email protected]

SEC. VP ......................................... Bobby Perez .................. 281/240-1234 .......... 281/240-4997 .......... [email protected]

Annual Meeting ....................... Jim Moulden .................. 281/876-8665 ............................................ [email protected]

Awards Banquet ...................... Carmen Comis .............. 713/393-4833 .......... 713/393-4801 .......... [email protected]

Golf Tournament ..................... George Lauhoff ............. 281/275-7623 .......... 281/275-7550 .......... [email protected]

Salt Water/Bass Tournament ... Bobby Perez .................. 281/240-1234 .......... 281/240-4997 .......... [email protected]

Shrimp Peel ............................ Lee Shelton ................... 713/789-2444 .......... 713/789-4449 .......... [email protected]

Sporting Clays ........................ Steve Bircher ................. 713/780-8334 .......... 713/780-8335 .......... [email protected]

Tennis Tounament ................... Joe Jones ...................... 281/438-5626 .......... 281/682-6928

SECRETARY ................................... Farrukh Ahmad .............. 713/647-3499 .......... 713/647-3671 .......... [email protected]

Directory ................................ Laura Self ...................... 713/952-7526 .......... 713/952-6784 .......... [email protected]

GSH Membership ................... Hugh Hardy .................. 713/729-9208 .......... 713/726-0456 .......... [email protected]

Ladies Auxiliary ....................... Luann Cefola ................. 281/366-3422 ............................................ [email protected]

OTC Rep ............................... Alf Klaveness ................. 713/468-5123 .......... 713/468-0900 .......... none

SEG Membership .................... Hugh Hardy .................. 713/729-9208 .......... 713/726-0456 .......... [email protected]

TREASURER .................................. Frank Dumanoir ............. 713/393-4881 .......... 713/393-4801 .......... [email protected]

EDITOR .......................................... Lee Lawyer ................... 281/531/5347 ........................................... [email protected]

Assistant Editor ....................... John Sumner ................. 713/431-6796 .......... 713/431-6094 .......... [email protected]

Company Contacts .................. Scott Sechrist ................ 281/856-8029 .......... 281/856-7445 .......... [email protected]

Electronic Pub ......................... Scott Sechrist ................ 281/856-8029 .......... 281/856-7445 .......... [email protected]

Photography ........................... John Freeland ................ 713/689-2618 .......... 713/966-3084 ..........

Publicity ................................. Scott Sechrist ................ 281/856-8029 .......... 281/856-7445 .......... [email protected]

PAST PRES .................................... Dave Agarwal ................ 281/920-4450 .......... 281/920-1576 .......... [email protected]

PRIOR PAST PRES ......................... John Sumner ................. 713/431-6796 .......... 713/431-6094 .......... [email protected]

SEG SECTION REPS* ..................... Steve Danbom ............... 713/937-7530 ............................................ [email protected]

............................................. Hugh Hardy .................. 713/729-9208 .......... 713/726-0456 ..........

............................................. Keith Matthews .............. 281/2757598 ............................................. [email protected]

............................................. Mike Fenton .................. 713/215-7452 ............................................ [email protected]

Alternate SEG Sec. Reps .................. Wulf Massell .................. 713/650-3820 .......... 713/659-3735 .......... wulf@epicgeo,com

............................................. Art Ross ........................ 281/360-9331 ............................................ [email protected]

............................................. Bill Gafford .................... 281/366-7873 ............................................ [email protected]

............................................. Pat Starich .................... 281/654-5036 .......... 281/654-5766 .......... [email protected]

............................................. Shane Coperude ............ 281/275-7514 .......... 281/276-7660 .......... [email protected]

August 2002 Geophysical Society of Houston 3

Corporate Partner

The GSH would like to thank the followingcompanies for their support as corporate members:

Thank you for your supporting the GSH!For information on how to become a corporate member or to endow a scholar-

ship with an organization’s name please contact Pat Starich (281) 654-5036 or theGSH office at (713) 463-9477.

Corporate Sponsor

Corporate Benefactor

Corporate Underwriter

ReservationsMake reservations by e-mail at [email protected] and include your member

number (found on Bulletin mailing label). Fax reservations to (713) 463-9160or use the phone system at 713/463-8920.

Reservation CodesUse these codes to make voice mail meeting reservations:

Technical Luncheon ................................... 601Data Processing SIG ................................... 602Potential Fields SIG .................................... 605Environmental Applications SIG .................. 606Breakfast ................................................... 607

AnnouncementsTennis TournamentOctober 4, 2002

12 NoonChancellors Racquet Club

SEG Annual MeetingOctober 6-11, 2002

Sporting Clays TournamentOctober 19, 2002

Corporate Benefactor

Corporate UnderwriterCorporate Underwriter

Editor’s NoteTo insure your information reaches

the GSH society members in a timelymanner it must appear in the appropri-ate newsletter issue. Please note the fol-lowing deadlines and plan yourfunction’s publicity strategy accordingly.Items must be received on or before thecorresponding deadline date. Materialscan be sent to Lee Lawyer [email protected] with a cc to JohnSumner at [email protected]. If you have any ques-tions please call Lee Lawyer at 281/531/5347 or John Sumner at 713/431/6796.

2002 GSH NewsletterDeadlines

Issue ............ September 2002Deadline .... August 6, 2002

Issue ............ October 2002Deadline .... September 10, 2002

Issue ............ November 2002Deadline .... October 8, 2002

Issue ............ December 2002Deadline .... November 6, 2002


Honorary MemberAlistair R. Brown

Alistair R. Brown is a ConsultingReservoir Geophysicist working out ofDallas, Texas. His specialties are inter-pretation of three-dimensional seismicdata, stratigraphic interpretation, opti-mum use of interactive workstations andseismic reservoir identification and evalu-ation. He spends much of his time teach-ing interpretation methods and advisingon interpretation problems worldwide.Alistair graduated from Oxford Univer-sity in England, having attended TheQueen’s College and has 36 years ofgeophysical industry experience. He hasbeen using 3-D seismic data since 1975and interactive workstations since 1980.He has developed many new interpre-tation methods and is a widely publishedauthor in his field. The making of thefirst horizon slice was a particular accom-plishment in 1979. The Fifth Edition ofhis book, Interpretation of Three-Dimen-sional Seismic Data (AAPG Memoir 42/SEG Investigations no. 9) was publishedin November 1999 following previouseditions in 1997, 1992, 1989 and1986.

Life MemberRobert H. Tatham

Robert H. Tatham is a professor ofExploration Geophysicis in the Depart-ment of geological Sciences at the Uni-versity of Texas at Austin and he holdsthe shell Oil Companies CentennialChair in Geophysics. His previous in-dustry experience includes research andexploration position with Texaco and amajor international seismic contractor,Geosource.

In 1967, Bob completed his BS inPhysics from California State Universityat Northridge and immediately began hiscareer in Geophysics with Texaco. Ini-tial activities at Texaco included process-ing of digital seismic data (then a newtechnology) and progressing onto inter-pretation of land data in East Texas,south Texas and the Gulf of Mexico.While working in this early assignment,Bob studied with the University of Hous-ton and began studies at the Lamont-Doherty Geological Observatory of Co-

GSH Honors and Awards Ceremonylumbia University and was awarded hisPhD by Columbia in 1975.

Bob is quite actively involved in SEGactivities. He served as an AssociateEditor for Geophysics from 1990through 1997, has been chair of theSEG Research Committee, where hecontinues active participation and hasserved as the President of the Geophysi-cal Society of Houston (1997-1998), thelargest section of the SEG. Continuingactivities include involvement with inte-grating geophysical, geological and res-ervoir engineering activities.

Dr. Tatham has published exten-sively on a variety of topics in explora-tion geophysics, including the book,“Multicomponet Seismology in Petro-leum Exploration”, currently in its thirdprinting, which he co-authored withMike McCormack. His dozens of publi-cations include not only numerous pa-pers on Shear Wave topics but data pro-cessing and reservoir geophysics as well.He is an active member of the SEG,AAPG, SSA, AGU and SPWLA.

GSH President’s AwardScott C. Sechrist

Scott C. Sechrist studied Geologyat Trinity University, received a B.A. inGeography/Remote Sensing fromsouthwest Texas State University, a B.A.in Communication – Broadcast Mediafrom S. F. Austin State University, andpost graduate courses at HCC of Hous-ton toward an M.S. in Geophysics/Ge-ology. He has over 23 years of experi-ence in subsurface mapping, seismicworkstation interpretation, 2D & 3Dseismic field acquisition, 3D prestackmigration data processing, inversion,AVO and amplitude evaluation.

Scott has worked for or consultedwith the Department of Energy, inde-pendents, and major oil companies. Hisprimary areas of experience are TexasGulf Coast onshore, GOM shelf slopeand deepwater, Permian Basin and EastTexas. Areas of international experienceinclude Central Asia, SE Asia and WestAfrica.

Scott joined Panaco, Inc. in 1998as Chief Geophysicist, specializing in 3Dseismic interpretation for prospect map-ping reservoir volumetrics and hydrocar-

bon attribute interpretation in Texas,Louisiana and the offshore GOM. Scottalso has significant experience in UNIXand NT system administration, all typesof seismic interpretation software andpetroleum database management.

Scott is a member of national andlocal chapters of AAPG, SEG, SIPES,and SPE. He is a Director on the Boardof the HGS until 2003, served as GSHsecond Vice President during 1999-2000 and chairs the GSH ElectronicCommunications & Technical Breakfastcommittees.

SEG 60 - Year HonoreesC.H. BroussardLynn D. ErvinSidney SchaferH. T. StommelBooth StrangePaul M. TuckerRudolf F. WeichertFrancis A. RobertsThomas R. ShugartJohn P. Woods

SEG 50 - Year HonoreesMichael AlexanderGeorge AmeryArchibald ArmstrongWm. E. LaingRichard L. ConroyMilford H. Dingman, Jr.Charles E. EdwardsSam L. EvansLeonard J. EversullHarry H. Hasenpflug, Jr.Edmund S. HastingsRobert F. KrayeA.M. OlanderJames R. PatchJohn F. ReillyCharles L. RobinsonRodney J.H. SmithJack C. WeyandBill Woodham


Photos From the GSH Honors and AwardsCeremony


for now, but I’d be delighted to pass thechairing of this SIG on to some otherlucky GSH member! Drop me an emailat [email protected] ) Of course, struc-tural imaging is still “King” in seismictechnology, and depth migration looksto be a likely contender for next year’sSpring Symposium. SEG would like forus to host more of their Continuing Edu-cation 1-day and 2-day courses, andwe’d be especially interested in puttingon the courses that folks missed at theannual convention, but would like to geta second shot at. Got a favorite SEGcourse you’d like to take? Send email toour 1st VP, Pat Peck([email protected] ).

A second resolution is to producemore programming that is relevant toour younger members. This program-

ming should have both a technical anda career development aspect. On thetechnical side, we have had a series oftutorials proposed to give in-depth back-ground on fundamental topics in explo-ration geophysics. On the career devel-opment side, we’ll have speakers ad-dressing how geophysicists rise in theirown organizations (oil companies, ma-jor contractors, specialty shops). It wouldalso be neat to have some successfulindependent interpreters speak abouthow they have managed their own ca-reers. (If you would like to speak at oneof these events, send me some email!)

A third resolution is to have morejoint activities with our sister societies,especially the Houston Geological Soci-ety. Routinely, we have a joint technicaldinner meeting in the spring of each yearand, of course, the phenomenal shrimp

boil each fall. Recently the boards forthe GSH and HGS got together to brain-storm some possibilities. Some ideaswere pretty tame, while others weredefinitely “outside the box” (such as araft trip down the Brazos with pre-cho-sen sites trenched to display fluvial sedi-mentary patterns, and booths for sup-porting vendors along the river banks).If you’ve got an idea for a joint activity,why not fire off an email to yours truly?

My last resolution is simply to sup-port and acknowledge (frequently!) thegreat work done by the volunteers, of-ficers, and committee chairs. These arethe folks who actually make everythingwork. Looking forward to an outstand-ing year!

President’s Column continued from page 1

POTENTIAL FIELDSA New approach for Accessing and Dis-tributing Potential Field Data over Net-works

By Troy Wilson* and Ian MacLeod,Geosoft Incorporated* Speaker

WHERE: HESS building, 5430Westheimer, Houston

DATE: ThursdaySeptember 19, 2002

TIME: 5:30 Social Hour;6:30 Dinner;7:30 Presentation

Cost: $25.00

Contact: Afif Saad, Chair - GSH Poten-tial Fields Group, at281-342-8575([email protected]) or Bob VanNieuwenhuise, Co-Chair at 713-735-6311 ([email protected]) by Tuesday,September 17, 2002 for reservations.E-mail is best because we can confirmyour reservation. Please HONOR yourreservation! We must bill no-shows!

Abstract:With the increased use of potential

field data collected and stored within

exploration company networks, the useof virtual or remote teams to process,analyze, interpret and deliver data withinan organization is becoming more im-portant. The sharing and distributionof large volume data and results contin-ues to be time consuming and inefficientin a workstation environment. The on-going development of useful Internet andIntranet protocols for computers to ac-cess and share geo-data, both privatelywithin an organization, and globally onthe Internet is key to our ability to usethis information efficiently.

The approach presented here ex-amines the use of new data access pro-tocols to move data from various datastores through a local Intranet or GlobalInternet into spatially aware interpreta-tion workstation environments, GIS orthin Web clients. The process for ac-cessing large volume spatial aware datacan be separated into three stages: dis-covery , exploration and exploita-tion . “Discovery” is simply determin-ing what data is available for our area ofinterest. Once we know data exists, we“Explore” the data to determine if itmight be of interest to us, which nor-mally involves obtaining metadata infor-mation about the data – things like reso-lution, survey parameters, etc. Finally,

to “Exploit” the data for our project re-quires transport of the data into the con-text of the project and tools that we use.This includes windowing of the data, re-projecting to the appropriate coordinatesystem, and conversion to a format thatour tools require.

In this presentation, we will describethe use of data access technology tocatalog, store and serve regional andlocal data from the National PetroleumReserve in Alaska into different clientenvironments. We describe the DataAccess Protocol (DAP), which is a suiteof server applications that allow the op-timal discovery and transfer of very largevolume data between an Internet orIntranet client application and a hostingdata server. In this case the data is var-ied in type from well point data, geo-physical grids, images, GIS coverage andreports. The end user environmentsexamined are web clients, GIS and aDAP enabled processing environment.We will show how the use of a singletechnology to support multiple data serv-ers and workstations can improve theefficient use of and collaboration withpotential field and other explorationdata.

SIG Meetings

Potential Fields continued on page 7


Biographies:Ian MacLeod

Ian MacLeod received a B.Sc. inGeology and Physics from Queen’s Uni-versity, Kingston, Canada in 1978. Ianthen joined the geophysical consultingfirm Paterson, Grant and Watson (PGW)where he was active in the acquisition,processing and interpretation of manytypes of geophysical data for explora-tion and engineering studies throughoutthe world. In 1986, Ian co-foundedGeosoft Inc., where he currently holdsthe titles of Chief Technologist and Di-rector of Research & Development.

Potential Fields continued from page 6 During Ian’s sixteen-year tenure atGeosoft, he has been the principal de-signer and architect for Geosoft’s com-mercial earth science applications, in-cluding DAP, Oasis montaj, Sushi, andnumerous related geophysical applica-tion suites. Geosoft software is currentlyused by more than 4000 geoscientistsin 82 countries.

Troy WilsonTroy Wilson received a B.Sc. in

Engineering from Queen’s University,Kingston, Canada in 1987. Troy workedfor both, Geoterrex an airborne geo-physical survey company, and Paterson,

Grant and Watson (PGW), geophysicalconsultants, prior to joining Geosoft in1990. Troy initially managed Geosoft’sTechnical Services group in Toronto,Canada before setting up Geosoft’s firstinternational office, in the United King-dom, becoming the Managing Directorof Geosoft Europe Limited in 1993.Troy returned to Toronto in 1997,where he currently holds the title of Glo-bal Business Officer. During Troy’stwelve-year tenure at Geosoft, he hasbeen a key force in building Geosoft’sinternational markets.

Geophysical Auxiliary ofHouston

The Geophysical Auxiliary of Houston, with Georgeann Massell as President,began the 2001-2002 year at the Houston Racket Club for lunch and a book reviewby Paula Scudday. Other luncheons included a style show and a program on how toaccessorize clothing for travel and everyday wear. Special events included attendingthe filming of a Debra Duncan show at Channel 13 and the Spring Brunch at LakesideCountry Club.

The following ladies served as officers and committee chairpersons for theyear:Georgeann Massell, Kathi Hilterman, Marinell Williams, Barbara Thigpen, EmilieFulton, Betty Conroy, Jeanne Cooley, Donna Parrish, Linnie Edwards, Ruth Harrison,Jane Hasenflug, Jerry Templeton, Susan Graul, Cass Hanson and Carol Gafford. TheAuxiliary extends a special thanks to them for all their time and energy and also toWestern Geco for printing our yearbooks.

We sill begin our new year in September and welcome new members. Yearly duesare only Call Membership Chairperson Emilie Fulton at 281-242-1806 for informa-tion on how to join. The wife of any present or past member of the GSH or SEG, thewidows of former members of the GSH or SEG and women members of these orga-nizations are invited to join jus for our 2002-2003 events. For information on pro-grams scheduled for the year, call Carol Gafford at 281-370-3264.

The Geophysical Auxiliary of Houston provides social activities for its members,contributes to the GSH Scholarship Fund and assists the GSH as needed.

MembershipReportNew MembersActiveFortenberry, Jeffrey S.Scarlett, Joseph R.Scoulios, Thomas E.Sheline, Hans E.Spark, Robert N.Stewart, Jonathan

AssociateBerlau, Charles E.Fisher, Perry A.Sisk, Melinda A.Terwilliger, John R.Wilson, David V.Zacharakis, Ted G.

TotalActive ............. 1201Associate ......... 399Comp ............. 22Emeritus .......... 62Honorary ........ 27Life ................. 31Student ........... 18

Total 1760 (As of July 11, 2002)

There are approximately 200 mem-bers who have not renewed their mem-bership. Many of these are the result ofsimple oversight. We get busy. We havevacations. There are priorities. But thereare the obvious benefits of membershipin the Geophysical Society of Houston.Renew today by calling the GSH office.It’s easy. It’s quick. Do it now.


This years Saltwater Fishing Tour-nament was a Big Success for both theGeophysical Society of Houston and theHouston Geological Society. The Tour-nament took place at Teakwood Ma-rina, Village of Tiki Island, Galveston,Texas. We scheduled the Fishing Tour-nament on a Saturday, June 22, to getfull family participation. Anglers fishedthe entire Galveston Bay Complex catch-ing plenty of Redfish, Speckled Trout,and Flounder. We had three categoriesof participants: Anglers, Lady Anglers,and Junior Anglers. Anglers competedfor the first, second, and third place Tro-phy Plaques sponsored by Manzanita.These trophy plaques were awarded tothe Anglers for bringing in the HeaviestRedfish, Speckled Trout, Flounder, andStringer (Combination of 1 redfish, 3trout, and 1 flounder.)

This years winner’s are:First Place, Heaviest Speckled Trout:

William Wilburn, 3 lb. 12 oz., SecondPlace, Joe Casarez, 2 lb. 5 oz., ThirdPlace, Rich Thompson, 1 lb. 15 oz.

First Place, Heaviest Redfish: DaleShipley, 8 lb. 12 oz., Second Place, MikeNaughton, 7 lb. 11 oz., Third Place,William Wilburn, 3 lb. 9 oz.

First Place, Heaviest Flounder: DaveSmith, 2 lb. 5 oz., Second Place, SteveGillie,

First Place, Heaviest Stringer: Will-iam Wilburn, 13 lb. 7 oz., Dale Shipley,8 lb. 2 oz., Third Place, Mike Naughton,7 lb. 11 oz.

The Tournament was lot of fun foreveryone. We ended up with 60 Anglersand lots more people just came to par-ticipate in the fun, cool refreshments,and Bar-B-Que. A special Thank You tothe volunteers of this event: JoanHenshaw (GSH/HGS office) PatriciaPerez, Tom Parsons (Rinalli Boats), DaleShipley (Anadarko), Alan Grimes (M-WPaper & Graphics Supply), and MaryThompson (Unique Digital Technology)for helping with the registration and

preparation of the event.We can’t praise our sponsors

enough for their support and generos-ity for this event. We need to give a “Spe-cial Thank You” to Gene Lindsay (GXTechnology), Kenneth Mohn (FugroGeoscience Division), Alan Grimes (M-W Paper & Graphics Supply), andGeorge Lau off (Fairfield Industries) forsponsoring the Bar-B-Que. David Or-chard (Manzanita) for sponsoring theTrophy Plaques. Ryan Clark (A2D Tech-nologies) for sponsoring the FishingCaps, and John Cramer (TGS-NOPEC),EMERALD GEOSCIENCE for sponsor-ing the Marina. Great door prizes weresponsors by Jim Allen (Sovereign Oil &Gas), Joe Cruso (Manzanita Alliances),Mark Dennis (Petro Log), JerryMcCormack (Indel-Davis), Jeanie Har-ris (American Shooting Centers), Patrick

2nd Annual GSH/HGS Saltwater FishingTournament 2002

Klem (Polaris E&E Services), SteveBircher (Hampson & Russell), Ed Woo-druff (Southwest Canoe & Kayak), SteveTyrrell (Tyrne Corp), Brian Naquin (Ova-tion Data), Lee Shelton (SubsurfaceConsultants), Greg Uhlig (Rinalli Boats),Diane Kraker (Administaff), Pat Peck(Hays Oil Data). Everyone received adoor prize, but the GRAND DOORPRIZE was a 36” Color TV donated byEd Bush (CMS Oil & Gas Company).

We wish to thank everyone againinvolved with the “2nd Annual GSH/HGS Saltwater Tournament”. We lookforward to seeing this event grow witheach coming year. The best advertise-ment is word of month, so please spreadthe word to your friends about the nextfishing tournament.

Robert D. Perez, GSH/HGS Salt-water Tournament Chairman


The 2002 GSH Spring Symposiumwas held Tuesday, April 23 at the WestinGalleria. The topic was “GeophysicalApplications to Pore Pressure Predic-tion”. Attendance topped 70 at the all-day event, reflecting the growing recog-nition that pore pressure is a unifyingconcept that applies to prospectivity aswell as drilling challenges. Kudos go outto GENE SPARKMAN, for organizingthe conference ably and efficiently, aswell as to SCOTT SECHRIST for pro-viding PR and web help, and SHANECOPERUDE for logistical and treasurysupport! The speaker’s list for the sym-posium included a wide range of con-tractors and oil companies. The talks andtheir speakers were

Seismic Pore Pressure ImagingStan Lee

2002 GSH Spring SymposiumShear-Wave Applications to PressurePredictionPhil Heppard

Pore Pressure Prediction in Subsalt andOther Deepwater Gulf of Mexico PlaysMichael Smith

Velocity Inversion Compensation: A Pro-cessing Methodology EnhancementMark Herkommer

Seismic Pore Pressure Prediction UsingReflection Tomography and 4-C Seis-mic DataColin Sayers

Deepwater Geohazard Prediction UsingPrestack Inversion of large offset P-wavedata and rock modelNader Dutta

Predicting shallow water flow zones fromseismic, inversions and pore pressuremodelsPeter Trabant

Effects of overpressure on AVO re-sponse in the Gulf of MexicoKeith W. Katahara

The Interplay of Structure, Pore Pres-sure & Prospectivity in the MississippiFan FoldbeltTed Dohmen

Geopressure and its Effects on RockProperties in the Gulf of MexicoRichard Verm

Improving Pressure Prediction ThroughIntegration and Multi-Scale AnalysisMartin L. Albertin

that every reflection event on theprestack seismic data is a primary P-wave reflection, and there is no contami-nation of these amplitudes from otherwave modes. Using synthetic data for afinely layered elastic model, it is demon-strated that such simple assumptions areincorrect, and there is a lot of interfer-ence of P-wave reflection amplitudeswith other wave modes, especially athigh offsets/angles. To properly modelsuch interference, it is necessary to go astep beyond AVO, a full-waveformprestack inversion where these effectsare correctly accounted for. Such aprestack inversion has been successfullyused in continuous prestack inversion,in a hybrid inversion scheme, and in geo-hazard studies like pre-drill pore-pressureprediction and shallow water flow analy-sis.

Prestack inversion is computer in-tensive, since it must compute manyforward synthetic models to obtain anestimate of the optimum earth model ata given common midpoint (CMP) loca-tion. This limits application of this in-version method to geologically simple

areas with little structural complexity. Asthe computers are becoming faster ev-ery day, it is expected that in the nearfuture it will be possible to efficientlycompute forward prestack seismogramsfor complex models, and apply prestackinversion over geologically complex ar-eas.

Using a variety of synthetic and realdata examples, application of prestackwaveform and hybrid inversion method-ologies will be discussed during the pre-sentation.

Biography:S u b h a s h i s

Mallick graduatedwith a Bachelors de-gree in GeologicalSciences in 1976and a Masters de-gree in Geophysicsin 1978, both fromthe Indian Instituteof Technology,Kharagpur, India.

After spending five years in the oil in-dustry, in 1983 he joined University ofHawaii as a graduate student, fromwhere he obtained a PhD. degree in

Geology and Geophysics in 1987. From1988 to 1990 he worked as AssistantSeismologist at the School of OceanEarth Sciences and Technology, Univer-sity of Hawaii where he worked on gen-eral aspects of seismic wave propaga-tion. Beginning 1991, he joined theGeophysical Research and Developmentdivision of former Western GeophysicalCompany. Currently, he is employed asa Principal Research Scientist withWesternGeco. His research interests in-clude seismic modeling and inversion,AVO, Multicomponent Seismology, andReservoir Characterization..

Technical Luncheon continued from page 1


17th AnnualGSH Sporting Clays Tournament

Saturday, October 19, 2002American Shooting Centers16500 Westheimer Pkwy.

This year’s Sporting Clays Tournament will be held on Saturday, October 19th, at the American ShootingCenters. The tournament is an all day event and family participation is encouraged. Non-GSH membersare welcome.

The tournament is a 50 bird event, designed to simulate actual field conditions. Shells are provided,however you must bring eye and ear protection. Prizes will be awarded for shooting prowess in variouslevels of expertise.

BBQ lunch and refreshments are provided throughout the day. Door prizes (made possible throughcorporate and private sponsorship) will be awarded after the conclusion of shooting.

Please ask your company to help sponsor this annual event. It is through the sponsor donations that weare able to have such good door prizes each year. Feel free to call me if you have questions, or pass myname on other interested persons.

For more information, contact: Amanda Dragon at 713-780-8334 or [email protected].

GSH SPORTING CLAYS REGISTRATION FORM

Name: _______________________________ Company: _______________________________

Address: _____________________________ Phone: __________________________________

_____________________________________ Email: __________________________________

Preferred shooting time: (circle one) 9:00 10:45 12:30

Indicate ammunition required: (circle one) 12 gauge 20 gauge

Please return form(s) with check for $60.00 per shooter, payable to: Geophysical Society ofHoustonMail to: Amanda Dragon c/o Hampson-Russell Software, 3000 Wilcrest #170, Houston, TX77042

Registration Fee: $__________ + Sponsor Contribution: $__________ = Total: $_______________

If you wish to shoot with a specific squad (5 shooters max.), please submit all forms together.

DISCLAIMER: I acknowledge that neither the Geophysical Society of Houston nor the AmericanShooting Centers will be held responsible for injury or accidents during this event. PRACTICESAFETY!!

Signature: ____________________________________________

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