GSH Meetings _______________ GSH Technical Luncheon December 14 ............................................ 1 Reality Centers SIG ..................................... 8 Buying and Selling Production ................... 11 Articles and Comments _______ Editors Note ................................................. 3 GeoEvents Calendar .................................... 3 SEG Distinguished Instructor Short Course .......................................... 4-5 GSH Membership Report ............................. 8 GSH General Purpose Summary ................ 9 Annual Seismic Softball Tournament ........... 9 1999 GSH Tennis Tournament Photos ....... 10 Milton Dobrine Lecture ............................... 10 Museum at the SEG ................................... 11 Social Events ________________ Potential Fields Party ................................... 8 Technical Luncheon I N S I D E VOL. 34, NO. 4 NEWSLETTER DECEMBER 1999 Technical Lunch continued on page 6 Date: Tuesday, December 14, 1999 Time: Registration and Cash Bar 11:30am Luncheon and Talk 12:00pm Location: HESS Building 5430 Westheimer Title: An integrated study of the Liuhua 11- 1 Field using an ultra high resolution 3D seismic dataset: South China Sea Authors: Chip Story*, Patrick Peng, Christoph Heubeck, and Claire Sullivan, BP Amoco, Lin Jian Dong, CNOOC Speaker: Chip Story Summary The Liuhua 11-1 Field, located 130 miles southeast of Hong Kong in 1000 feet of water, is a vuggy carbonate reservoir at shallow depths (3850 feet subsea), producing 16-22 degree API oil under a very strong bottom-water drive. The field was discovered in 1987 and is currently being developed with twenty-five long- radius horizontal wells drilled from a floating production system (FPS) tied to a modular sub-sea structure. Project success is dependent on well productivity and on limiting water production, which in turn makes an accurate reservoir description critically important. To better define reservoir heterogeneity, a 3-D seismic survey of the Liuhua field was acquired in July, 1997. A very high resolution dataset (200+ Hz) was obtained, and has been used in an integrated field study to evaluate the future exploitation potential of the Liuhua 11-1 Field. Drilling and seismic data were integrated to obtain detailed maps of reservoir structure and stratigraphy. Petrophysical data coupled with seismic inversion were used to obtain a 3D spatial distribution of reservoir properties (porosity, permeability, and saturation). Coherence technology was used to map faults and fractures in the reservoir; complex attribute analysis added an improved understanding of rock quality in different parts of the reservoir. All this information has been used to build reservoir characterization and simulation models via several commercial and proprietary software systems. Introduction The Liuhua reef complex, of which only the western part of central core area has been developed, has 1.4 billion barrels of highly viscous crude in place. After the initial production in 1996, it became clear that the reservoir is much more petrophysically heterogeneous than originally thought. In addition, many unexpected internal faults have been identified by drilling and inferred from production performance. The objectives of the Liuhua project were four fold: 1) high frequency acquisition and processing, 2) a high resolution acoustic impedance inversion, 3) a highly integrated interpretation and reservoir characterization, and 4) a complete Reminder: The SEG Distinguished Instructor Short Course will be held on December 7, 1999. Sign up now - space is limited. See page 4 for details.
Transcript
GSH Meetings _______________
GSH Technical Luncheon December 14 ............................................ 1
Reality Centers SIG ..................................... 8
Buying and Selling Production ................... 11
Museum at the SEG ................................... 11
Social Events ________________
Potential Fields Party ................................... 8
Technical LuncheonI N S I D E
VOL. 34, NO. 4 NEWSLETTER DECEMBER 1999
Technical Lunch continued on page 6
Date: Tuesday,December 14, 1999
Time: Registration and CashBar 11:30amLuncheon and Talk12:00pm
Location: HESS Building5430 Westheimer
Title:An integrated study of the Liuhua 11-1 Field using an ultra high resolution3D seismic dataset: South China Sea
Authors:Chip Story*, Patrick Peng, ChristophHeubeck, and Claire Sullivan, BPAmoco, Lin Jian Dong, CNOOC
Speaker: Chip Story
SummaryThe Liuhua 11-1 Field, located
130 miles southeast of Hong Kong in1000 feet of water, is a vuggycarbonate reservoir at shallow depths(3850 feet subsea), producing 16-22degree API oil under a very strongbottom-water drive. The field wasdiscovered in 1987 and is currentlybeing developed with twenty-five long-radius horizontal wells drilled from afloating production system (FPS) tiedto a modular sub-sea structure. Projectsuccess is dependent on wellproductivity and on limiting waterproduction, which in turn makes anaccurate reservoir description criticallyimportant.
To better define reservoirheterogeneity, a 3-D seismic survey ofthe Liuhua field was acquired in July,1997. A very high resolution dataset(200+ Hz) was obtained, and has been
used in an integrated field study toevaluate the future exploitationpotential of the Liuhua 11-1 Field.
Drilling and seismic data wereintegrated to obtain detailed maps ofreservoir structure and stratigraphy.Petrophysical data coupled with seismicinversion were used to obtain a 3Dspatial distribution of reservoirproperties (porosity, permeability, andsaturation). Coherence technology wasused to map faults and fractures in thereservoir; complex attribute analysisadded an improved understanding ofrock quality in different parts of thereservoir. All this information has beenused to build reservoir characterizationand simulation models via severalcommercial and proprietary softwaresystems.
IntroductionThe Liuhua reef complex, of which
only the western part of central corearea has been developed, has 1.4billion barrels of highly viscous crudein place.
After the initial production in1996, it became clear that the reservoiris much more petrophysicallyheterogeneous than originally thought.In addition, many unexpected internalfaults have been identified by drillingand inferred from productionperformance.
The objectives of the Liuhuaproject were four fold: 1) highfrequency acquisition and processing,2) a high resolution acoustic impedanceinversion, 3) a highly integratedinterpretation and reservoircharacterization, and 4) a complete
Reminder:The SEG Distinguished
Instructor Short Course will beheld on December 7, 1999.
Sign up now - space is limited.See page 4 for details.
2 Geophysical Society of Houston December, 1999
GEOPHYSICAL SOCIETY OF HOUSTONJoan Henshaw, Office Manager • 7457 Harwin Drive, Suite 301 • Houston, Texas 77036 • Office Hours 8 a.m. - 5 p.m.
the GSH society members in a timelymanner it must appear in the in theappropriate newsletter issue. Pleasenote the following deadlines and planyour function’s publicity strategyaccordingly. Items must be receivedon or before the correspondingdeadline date. Materials may be sentto [email protected] or faxed to713/783-9780.
Make reservations by e-mail [email protected] and includeyour member number (found onBulletin mailing label), or use thephone reservation system at713/917-0218.
Mr. Patrick J. StarichPresidentGeophysical Society of Houston
Dear Patrick,
On behalf of the Society of Exploration Geophysicists, the entire1999 Annual Meeting Steering Committee and myself, I would like tothank the membership of the Geophysical Society of Houston for thetremendous support they provided during the 1999 Annual Meeting.When the call for volunteers was made, GSH stepped up and answeredthe call in grand style. According to my records we had over 150volunteers work on this year’s Annual Meeting, with most of themcoming from the GSH. The many hours worked by the volunteersbefore, during, and after the annual meeting helped guarantee itssuccess.
I need to say a special thanks to the five individuals who workedwith me directly on the Arrangements Committee. Without theirassistance, the Arrangements Committee would not have been able tocarry out its required functions. They are Mike Cooper of Geo Focus(Delegate Bag Preparation), Rob Dammer of Jebco Seismic (Signs),George Lauhoff of Fairfield Industries (Golf Tournament), Roy Clarkof Exxon Exploration (Communications), and GSH’s VolunteerCoordinator Claire Bresnahan (Session Monitors). They spent untoldhours recruiting volunteers and working during the Annual Meeting.
I would like to express appreciation to my employer, CraigLimbaugh of Alliant Geophysical, for allowing me the time to serve asthe Arrangements Chairman for the 1999 Annual Meeting. I wouldalso like to thank the employers of all the other volunteers who helpedcarry out the various duties of the Arrangements Committee. Without the support and commitment of those companies, we could nothave succeeded. This was not an insignificant commitment as I estimatethat the volunteers spent some 1500 to 2000 hours working on themeeting.
Thanks again for your support.
Sincerely,
Robert L. AyersArrangement Chairman1999 Annual Meeting Steering Committee
4 Geophysical Society of Houston December, 1999
COURSE DESCRIPTIONMulticomponent studies are
perhaps today at the same stagethat 3-D studies were fifteen yearsago. The renewed interest in shearwaves is obvious, especially in thesubsea environment where millionsof dollars are being spent onacquiring the elastic response ofthe earth. Because shear wave-related techniques are raising theinterest of the E&P industry, thiscourse addresses, through casehistories, the practical aspects ofmulticomponent data acquisition,processing and interpretation.
Although the industry resortsto shear wave propagation whenthe usual compressional responseis poor, the main promise of theshear wave response is in itscombination with thecompressional one. However, thisis possible only when the qualityand resolution of the tworesponses are similar.
The first part of the course isdevoted to overcoming thedifficulties associated with shearwave acquisition. Converted modeoperation is covered in detail usingreal-life examples. Theparticularities of sea bottomreceivers are also examined.
The second part of the coursereviews the processing and themain challenges of the shearconverted modes: staticcorrections, gathering, velocity
analysis and compensation for shearwave splitting in axial anisotropy. Thecourse gives a detailed description ofprocessing sequences. 2-D and 3-Dresults, yielding natural axis orientationof layers, are compared in shear andPS converted modes.
The third part of the course isdevoted to case histories where newattributes, such as Vp/Vs ratio, crackdensity, or fracture orientation, areillustrated in a reservoir characterizationcontext. These case histories can guidethe geophysicist to decide if a particulargeological situation can be best handledusing shear waves.
WHO SHOULD ATTEND?For those who are interested in the
potential of the methodology involvingshear waves, it is a good opportunityto learn from one of the leaders in thisfield and to maximize the chances ofgetting the most out of the data whenbig investments are at stake.
AUTHOR’S BIOGRAPHYRobert J. Garotta graduated from
the Facult=E9 des Sciences in Paris andbegan his career in the geophysicaldepartment of the French NationalCenter for Scientific Research (CNRS),where he conducted work in themagnetotelluric method. He spent 37years at CGG, first in the gravitymethod, then as a seismologist in fieldoperations. Later he joined the GeneralGeophysics Division as an areageophysicist in charge of quality control
SEG DISTINGUISHED INSTRUCTOR SHORT COURSEDecember 7, 1999 • 8:00am - 4:30pm • Houston Marriott Westside
and technical assistance tooperations. His solid technicalbackground, combined with hispermanent involvement in fieldoperations, gave him theexperience to successfully addressthe most complex geophysicalproblems. He concluded his careerat CGG as senior vice president ofgeophysical methods. He is nowadvising the CGG group in the areaof multicomponent seismic datafrom acquisition to interpretation.He has made significantcontributions in various fields ofresearch and development such asvibroseis, velocity analysis, staticcorrections and 3-D survey design,and is the author of numeroustechnical papers. He was one ofthe key promoters of shear waveacquisition, processing andinterpretation in our industry. Hispioneering work on the use ofconverted shear waves led himfrom the first experiments inFrance to active participation in theColorado School of Mines projects.A longstanding member of theSEG and of the EuropeanAssociation of Geoscientists &Engineers (EAGE), he was the co-recipient of the ConradSchlumberger award in 1965. Mr.Garotta has two children and fivegrandchildren, and he spends a lotof time in his vineyard in the Southof France.
SHEAR WAVES FROM ACQUISITION TOINTERPRETATIONBy Robert Garotta
December, 1999 Geophysical Society of Houston 5
Registration form forSEG Distinguished Instructor Short Course
Shear Waves from Acquisition to InterpretationDecember 7, 1999
Houston Marriott WestsideNW Corner of Katy Freeway IH-10 and Eldridge Parkway
SEG Member? ❏ Yes ❏ No Geophysical Society of Houston Member? ❏ Yes ❏ No
Cost: (Check ONE)❏ Member of SEG and GSH - includes lunch - $50❏ Member of SEG but not GSH - $70 ($20 will be applied toward GSH membership)❏ Member of GSH but not SEG - $120 ($70 will apply toward SEG Associate Membership)❏ Member of neither GSH nor SEG - $140 Please complete both applications
* If you wish to join either GSH or SEG and would like to apply this registration fee to your membership dues, please submit theappropriate membership application form(s) with this registration form.
AMOUNT ENCLOSED: $_______________Make checks payable to Geophysical Society of Houston
Send to: GSH, 7457 Harwin Drive, Suite 301, Houston TX, 77036-2160
Payment by credit card: CARD: ______ Mastercard ______ Visa _____ American Express
PRINTED NAME AS IT APPEARS ON CARD: _________________________________________________________________
If paying by credit card, you may fax to: 713-785-0553
If coming from out of town, for your convenience, the contact information for the hotel:Phone: 281-558-8338 • Fax: 281-558-4028 • http: www.fairfieldinn.com/marriott/HOUWS/
6 Geophysical Society of Houston December, 1999
reservoir simulation driven by thecharacterization to guide futuresidetracks and thereby optimizeexploitation of the reservoir. Theacquisition was conducted duringextremely calm seas with short(1500m) streamers and very shallow(3.5m) tow depths. The 180Hz fielddata were enhanced during processingto produce peak frequencies of 240Hz.Approximately 4 million traces wereacquired at a bin spacing of 5m x 5mover a 100 sq. km. area. These datawere converted to acoustic impedanceusing geologically constrained inversiontechniques and then to porosity basedon a linear impedance vs. porosityrelationship. The interpretation andcharacterization of the reservoir fromthe seismic data are the prime subjectsof this paper.
DiscussionTwo groups of bounding faults on
the north and south sides of the Liuhuareservoir delimit the production areain a horst block that has a maximumrelief of approximately 250 feet. Figure1 is an east looking 3D visual of thetop of the Miocene Zhujiang Formationcarbonates. A coherence image of thissurface is provided in Figure 2 with thebounding fault groups shown at theedges of the production area near theends of the horizontal wells.
Both groups of bounding faults areassociated with low velocity gas sagson the seismic time sections. Inaddition, the southern fault system isassociated with four large circular karstcollapse structures (sinkholes) clusteredtogether roughly due south of thecentral production platform. Six orseven additional major karst featuresare shown on Figure 2 rimming themain platform in the southwest areaof the 3D dataset. The major faultsprovide channels for significant verticalmovement of bottom water at theedges of the reservoir. The karstsinkholes present a model for additionalvertical water encroachment within theproductive area of the reservoir. As aresult of this field study, karst collapseis now thought to be a significant factoreffecting the hydraulics of this reservoirand was simulated during the flowmodeling.
Figure 3 is an east-west seismiccross section, paralleling the southernbounding fault trend within thereservoir development area, using thereflection strength attribute. Gas sagzones associated with the boundingfault systems just inside of the reservoiredges are thought to represent zonesof incipient carbonate collapse due tokarst leaching and appear as areas oflow amplitude chaotic reflectivity on theseismic. The associated gas chimneydim zones are also seen on the seismic.These smaller, internal partial karstfeatures are not completely collapsedinto cylindrical patterns as are the largeoff-structure sinkholes, and thereforeonly the linear edges show up on thecoherence image in Figure 2. Themechanical process for all the solutioncollapse is identical, and is importantto document because of the suspectedrelationship of these features withabnormal vertical water movementupward through the associatedmicrofracturing. Several isolated karst“dimples” which are suspected to existwithin the core producing area areassociated with very subtle seismicdiscontinuities, and may ultimately bepart of the reason for the higher thanexpected water production from thereservoir through sub-resolutionfracture swarms.
The second significant findingrelated to fluid flow within the Liuhuareservoir is a revised understanding ofthe primary deposition and secondarydiagenesis, and the associatedheterogeneity of the reservoir flowunits. Because the majority of theporosity stratification in Liuhua isbelieved to be diagenetic in origin, itwas important to be careful ininterpreting the mix ofchronostratigraphic andlithostratigraphic events that comprisethe seismic reflectivity. The diagenetictight streaks are important in that theyhave had a divergent double effect onindividual well productivity: 1) Highlycemented zones below the horizontalwellbores reduce pressure support fromthe bottom-water drive, and 2) thesesame zones protect attic oil accessedby the wellbores from early waterbreakthrough.
Given the complex geologicbackdrop associated with a reef system,
it became imperative to generate a highquality seismic inversion to properlydefine the porosity heterogeneity (andfluid flow) in the reservoir. Fortunately,the acoustic impedance vs. porosityrelationship is excellent and aninversion of the seismic data hasproduced a 3D property model ofporosity that is in very close agreementwith the well log-derived porosityvalues. Figure 4 is a cross sectionthrough the 3-space porosity structuremodel as an example of the internalcharacteristics of the reservoir near oneof the horizontal development wells.The porosity ranges from 10% to 34%and demonstrates the spatial variabilityof the stratigraphic zones.
A prime objective of the Liuhuaasset team was to produce an accurategeoscience characterization based onthe porosity inversion for input to flowsimulation. The high frequency andquality of the seismic data input to theinversion cube shown in Figure 4 hasallowed for temporal and spatialresolution on the order of 14 feet, withdetectability approximately 1/3 of that.The depth conversion process whichproduced the structure model of Figure4 was complicated by both the thinporosity layers in the reservoir and thegas sag effects in the solution collapsezones. Because the main reservoirproducing zone averages about 25 feetin thickness, the depth conversionrequired a very tedious, high precisionprocess to ensure that the 25 horizontalwells were in the correct zonespredicted by the well log porosity data.This entire 3-space model was thenexported directly to the reservoirsimulator.
ConclusionsMuch of the prior geoscience
knowledge affecting the reservoir flowcharacteristics during the engineeringsimulation was revised significantly asa result of this new work. The structurallocation of the wellbore, which isalways important, must be consideredalong with the internal faulting/fracturing, the porosity/permeability ofthe producing zones, and the integrityof the “tight” zones. A critical findingas demonstrated by the porosity modelis the general heterogeneity and lack
Technical Lunch continued on page 7
Technical Lunch continued from page 1
December, 1999 Geophysical Society of Houston 7
of continuity in the tight layers as calledfor in the original development plan.The Liuhua reservoir is now seen tobe riddled with porosity soft spots andsuspected fracture swarms in the zonesthat were originally required to bespatially competent as tight protectionfrom aquifer influx. This model wasrefined and re-exported to thesimulator a number of times afterexamination by the engineering staff.Limits on the perturbation of the basicgeoscience variables in thecharacterization were therefore tightlybounded during simulation, and forceda fast and accurate convergence on asolution during history matching andfield modeling.
AcknowledgmentsThe authors would like to thank
the management of BP Amoco, KerrMcGee, and CNOOC for permissionto publish this work.
An integrated study of the Liuhua11-1 Field
Figure 1: 3-space image of the topof the Liuhua reef complex. Faultbreaks shown as gaps, karst featuresas deep sinkholes.
Figure 2: Coherence image of thereservoir top. Large circular featuresare karst collapse zones; linear featuresare faults.
An integrated study of the Liuhua11-1 Field
Figure 3: Reflection strengthsection showing amplitude loss in thegas chimney zones within and abovethe reservoir.
Figure 4: Combined structure andproperty model in depth showingcarbonate porosity flow units input towell simulation.
Technical Lunch continued from page 6 Biography of Chip Story
Chip Story holds a B.S. degree inGeological Engineering from the SouthDakota School of Mines and an M.S.degree in Geophysics from theColorado School of Mines. His careerbegan with Amoco in 1977 with theearly efforts in the Wyoming ThrustBelt. Subsequent projects includedwork in the Paradox Basin andWilliston Basin. Project assignments inNew Orleans and Houston starting in1983 involved the Gulf of MexicoPleistocene, the onshore and offshoreNorphlet Trend, the Tuscaloosa Trend,the Hackberry Trend, the Santos Basinoffshore Brazil, and the Liuhua Fieldcomplex offshore China. Chip iscurrently working as a consultingexploration geophysicist on Norphlet/Smackover projects in the MississippiInterior Salt Basin and on theTuscaloosa in the Tuscaloosa Trend forCAEX Services of Houston. Hisprofessional interests include 3-Dseismic interpretation, visualization,and reservoir characterizationtechnology. Chip holds activememberships in the GeophysicalSociety of Houston and the Society ofExploration Geophysicists.
8 Geophysical Society of Houston December, 1999
SIG Meetings
Reality Center -SIG Organizing
Date: December 9, 1999Time: 9:00amPlace: Continuum Resources
The RC-SIG will meet regularlyto review the operating tips and tricksof the running a virtual reality center.
The two-day technical kick-offmeeting of the North American RC-SIG will be January 31st and February1st of 2000 at Continuum, 11700 OldKaty Road at Kirkwood, Suite 100.About one-half day will be devoted toeach of these four topic areas (contactH. Roice Nelson for more details):
TechnologyOperationsResearchUser experiences
With centers at UH, BP-Amoco,Landmark, Halliburton, Veritas, EPR,Texaco, Occidental, Rice, Continuum,Schlumberger, Geco, and other placesin Houston, and with all of the usersinvolved with these centers, the RC-SIG will provide a significant service tothe geoscience community in Houston.The North American RC-SIG ismodeled after the European RC-SIG,which Darrell Fangui helped found.
The Geophysical Society of HoustonBoard on 11 November unanimouslyapproved the new Special InterestGroup with H. Roice Nelson as its firstChairman.
In addition to the two-day technicalkick-off meeting starting 31st January2000, there will be an initial organizingmeeting December 9, 1999 at 9:00am at Continuum Resources which willinclude interactive collaboration with anafternoon activity of the European RC-SIG. All persons interested in helpingdirect the activities of the RC-SIGshould contact RC-SIG Chairman, H.Roice Nelson for details of theorganizing meeting in December:
H. Roice NelsonVisualization DirectorContinuum Resources International,Inc.11700 Old Katy Road, Suite 100713.860.5000713.860.5050 (Fax)[email protected]
The GSH initiated the NorthAmerican RC-SIG, but we encourageother professional organizations to alsorecognize the RC-SIG.
John MorseMarianne RauchDenny RompotesKamal SiddiquiWade SkeltonJames StantonBrian WallickRudy Wilhelm
Robert WyckoffMathew Martin
AssociateNizar Chemingui
Thad DunbarPaul HarrisonKeith HatchZoe Smith
Current Membership 1880
MembershipDirectoryCommitteeNeeds ChairGSH is seeking a volunteer to chairthe committee organizing our jointGSH/HGS MembershipDirectory. If you feel you have theorganizational skills and desire tolead this important committee,please contact:
Knowledge of Microsoft Access isa plus, but not necessary.
December, 1999 Geophysical Society of Houston 9
The 2nd annual Seismic Softballtournament was played on Saturday,October 16, 1999, at the Sportsparkin Houston. The proceeds from thetournament went to the SEGFoundation. Five teams participated.They were the PGS-Rams, BP-Amoco-Killer V’s, Paradygm-Geos, Syntron-Stingrays and the Schlumberger-GeocoPrakla-Titans. The early format was around robin to select the cedes for theafternoon final single eliminationround.
Each team fielded five men and fivewomen. This was a slow pitch game.The ball had to be between six feet andtwelve feet high rather than the flatpitches in the faster game. There wereseveral rules designed for the women.A smaller ball was substituted everytime a woman came to bat. Theoutfielders were not allowed to move
forward in anticipation of a shorter hitwhen a woman was at bat. Severaltimes they were moved back by theUmpire. If a team did not field fivewomen, they had to take one out eachtime two men batted in order. If a manwas walked, the following woman hadthe option of walking or hitting.
Everyone had a great time. Therewere many words of encouragement
to the batters from their teammates.One that produced the best result was,“Imagine the ball is your boss’s head!”Since there were several bosses there,it also produced a lot of laughter. Onesuch boss, Dick Miles with Syntron,batted for the first time ever. This wasnot his game. He suggested that hecould hit better if the ball bounced onthe way in and he was defending awicket.
The tournament was organized byMarisa Rowland and Michelle Klugefrom PGS. They did a great job. Thefinal round came down to the PGS—Rams and the Syntron-Stingrays. It wasa close game with the Syntron-Stingrays coming out on top.Congratulations are in order for eachof the teams and all of the players.
2nd Annual Seismic Softball Tournament
The Geophysical Society of Houston was formed in 1947 to promote the science and profession of geophysics and tofoster fellowship and cooperation among all persons interested in geophysics. The GSH forms the heart of a Houston-basedgeophysical community and gives opportunities to interact with colleagues throughout the profession. It is a public foundationand is a charitable, tax-exempt organization (under 501(c)(3) of the IRS tax code).
The GSH encourages and supports scientific, educational, and charitable activities of benefit to geophysicists.
GSH Purpose Summary 1999
Programs and Opportunities
Technical Activities
Technical Luncheon, third Tuesdayof the month, HESS
Special Interest GroupsData ProcessingInterpretationNear Surface
Potential FieldsReservoir
Technical Breakfasts, monthly at siteson the West Side, Greenspoint, and
downtown Houston
Spring Symposium
Continuing Education
Organize and present courses tomembers at cost
Conserve, catalog, and displaygeophysical artifacts and documents
Academic liaison with geophysicsdepartments at Rice University and
The University of Houston
Publications
Monthly Newsletter
Annual Membership Directory
Information at our website http://www.seg.org/sections/gsh/
gshhome.html
Scholarships - Loans
Student Loans
Contributions to the SEG Foundation- administer numerous scholarships
Fund-raising Activities
Annual Meeting/ BBQ
Shrimp Boil (w/ HGS)
Sporting Clays, Tennis, Golf, andBass Tournaments
Honors and awards annually toworthy geophysicists in the Houston
area
10 Geophysical Society of Houston December, 1999
GEOPHYSICAL SOCIETY OF HOUSTON1999 FALL SCRAMBLE TENNIS TOURNAMENT
MIXED DOUBLES-CHANCELLORS RACQUET CLUB OCTOBER 8,1999
Results:Braccket First Place Second Third Fourth FifthA Travis Moebes Patrick Donais Forrest Carpenter Marvin Taylor Marc HeisingerB Lee Lawyer Kahlid Razvi Bob Parker T. K. Chao Ronnie Bauerlein
All the tennis players and the Geophysical Society of Houston wish to thank the following companies for making this event agreat success:
DIAMOND GEOPHYSICAL SERVICE CORPORATION
GRANT GEOPHYSICAL INC.
INDEL-DAVIS INC.
MITCHAM INDUSTRIES, INC.
OVATION DATA SERVICES
PETRIS TECHNOLOGY SERVICE
SAIC(Science Application International Corp.)
SEITEL MANAGEMENT INC.
TGS-NOPEC Geophysical Company
VERITAS GEOPHYSICAL SERVICES
WESERN ATLAS INTERNATIONAL INC.
Many thanks to the Tennis committee Joe Jones & Bill Steiner
The annual Milton DobrinMemorial lecture will be held onTuesday Feb 1 at the University HiltonHotel on the University of Houstoncampus. The lecture will begin at 5:30and will be followed by a reception at6:30. The speaker will be Dr. ArtWeglein with Arco, and his subject willbe Inverse scattering multipleattenuation. The Annual Dobrinlectures are sponsored jointly by theGeoscience Department of theUniversity of Houston and theGeophysical Society of Houston.
Abstract:Multiple attenuation is a long-
standing problem in explorationseismology. Filtering, predictivedeconvolution, and forward modelingand subtraction methods are theindustry standards and they have astrong (and continuing) record ofenormous positive impact. However,the industry trend towards ever more
costly plays, and increasing complextargets in, e.g., deep water, or highstructure, subsalt, sub-basalt, and sub-volcanics often bring serious violationof the assumptions behind thesetraditional techniques and a seriousdegradation in effectiveness. Thesefactors drive the rejuvinated interest indeveloping fundamentally newdemultiple techniques that canaccommodate these technicalchallenges and remain effective whentraditional methods fail.
The inverse-scattering methods forattenuating free surface and internalmultiples are designed to directlyrespond to these challenges. Theyattenuate all multiples from amultidimensional earth with absolutelyno subsurface information, velocitypicking, or interpretive intervention. Inthis talk we briefly review the conceptsbehind these techniques and exemplifythe algorithms with synthetic and fielddata examples. Open issues and future
directions will be discussed.
BiographyWeglein received his PhD in
Physics from the City University of NewYork in 1975. After a two-year WelshPostdoctoral Fellowship, he worked atthe Citgo Research Lab and thenSohio-BP in Dallas. In 1985 he joinedARCO where his current position isSenior Research Advisor. In 1992-1995 he worked at SchlumbergerCambridge Research, Cambridge,U.K., as Scientific Advisor, while on a3-year leave-of-absence from ARCO.
Weglein has held severalcontemporaneous adjunct and visitingacademic positions including adjunctAssociate Professor at ColumbiaUniversity, 1982-1992; VisitingProfessor at Federal University ofBahia, Brazil, 1989-1990; and VisitingProfessor at Delft University, 1999-present.
Milton Dorbin Memorial Lecture
December, 1999 Geophysical Society of Houston 11
Thursday, December 28:30 a.m. - 4 p.m.Shell Auditorium, One ShellPlaza
Buying and selling productionrequires different focus and skillsthan exploration and developmentactivities. Both novices andexperienced production traders willlearn from this course, featuringthe following presentations:
Merger, Acquisition, andDivestment TransactionsOverviewDavid L. Bole, VP CorporateResearch & Development, Randall& Dewey, Inc.
Exploring Vs. Buying ReservesDan Olds, Manager, PetroleumEngineering Consulting,Pricewaterhouse Coopers
Structuring the Deal - Who DoesWhat, WhenGeoff Roberts, Madison Energy
Financing the DealPaul Riddle, VP Finance, First Union
Auctions vs. Negotiated SalesKen Olive, President, The Oil & GasAsset Clearinghouse
Luncheon Keynote speaker:John Walker, President & CEO ofEnervest Management CompanyCase studies on Acquisition Strategies(see website www.hgs.org for whichcompanies)
Houston Geological Society and Society for Independent Professional Earth Scientists Gulf Coastpresent
Buying and Selling ProductionThis course is intended for any
upstream energy professional -geoscientist, petroleum engineer,petrophysicist, or landman.
$ 85 HGS and SIPES members$ 95 Non-members$125 Walk-ins
Course is limited to first 125registrants.
Lunch and networkingreception after seminar is included.
To reserve a seat, send a checkpayable to HGS to:
HGS, 7457 Harwin, Suite301, Houston, Texas
77036,Attn: Buy/Sell Course
Our good fortune was to have abold 50’s museum consisting of field-ready equipment for a crew and theSEG’s traveling museum located at theentrance to the exhibits. For the mostpart the field instruments were donatedby the family of Steven H. Christensen.The “doghouse” lived up to its namein size and obviously required a small,agile, temperature-tolerant observer tooperate the instruments. Which likelycame first - the “Dog House” or thename “Bird Dog” for a clientrepresentative? Perhaps Lee Lawyercan ponder this and report back in his“From the Other Side” column in theLeading Edge.
Bill Gilchrist and Bill Swart deserveout thanks for their work in mountingthe exhibit and for the cleaning,restoration, and painting of thedoghouse.
SEG’s virtual museum andprototype of the museum kiosk wereviewed by many. Video taping ofhistorical information occurred duringthe convention as organized by Norm
Domenico.The Doodlebugger maquettes
were on sale and exhibited in themuseum. Gary Sernos and DamirSkeerl can claim that theirdoodlebuggers have spent time in a real“doghouse.” General Hardy and I soldthe latter and one other toSchlumberger.
We plan to prepare selected itemsthat Joel Watkins chose for display onthe Texas A&M campus. Following arequest from Bob Tatham and asuggestion from Bob Hardage tocontact Dr. William Fisher, we also planto prepare items that will be displayedat the University of Texas. BobWyckoff would like to donate one ofour torsion balance instruments to theUniversity of Wyoming. We willrequest shipping charges as soon aswe select one of the instruments. SinceBill Swart and others on the MuseumCommittee have seismic backgrounds,we are looking for someone withpotential field experience to help selectan appropriate instrument.
With 21% of SEG members in theHouston area, there are likely thosewho would enjoy helping the GSHMuseum by contributing time and talentto our artifacts, the virtual museum, andthe learning kiosk. Volunteers areneeded and would be appreciated.
The presence of our museumprompted an offer from SteveChelminski, inventor of the Bolt sleeveairgun, to offer the original prototypeairgun and drawings. We may getadditional artifacts donated because ofthe excellent exposure at theConvention.
The GSH thanks HaysInternational Management, Inc. forstoring the artifacts and Baker-Hughes,courtesy of Martin Wiltshire, for storingthe doghouse.
Thanks to all who help at theexhibit at the SEG Convention: BillGilchrist, Bill Swart, John Farr, WaldoGullickson, Bob Wycoff, and HughHardy. Steve Emery (SEG-Tulsa) wasespecially helpful in moving things inand out of the display area.
Museum at the SEGTom Fulton
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