gsh feb08 news · presentation and q&a location: fugro building 6100 hillcroft, suite 100...
TRANSCRIPT
NEWSLETTERVOL. 42, NO. 6 FEBRUARY 2008
President’s Column continued on page 16.
Inside This Issue
President’s Column
SEG/EAGE DISC ......................... 11Membership Report ..................... 16Sightings .................................... 16Museum News ............................. 18Calendar of Events ...................... 20
Geophysical Auxiliary .................... 3Item of Interest ............................. 6Spring Symposium ........................ 9Data Processing SIG .................... 10Rock Physics SIG ........................ 11
Technical Luncheon continued on page 5.
Technical Luncheonby Steven Cochran, GSH Treasurer
Technical Breakfast
FEBRUARY 2008SUNDAYSUNDAYSUNDAYSUNDAYSUNDAY MONDAYMONDAYMONDAYMONDAYMONDAY TUESDAYTUESDAYTUESDAYTUESDAYTUESDAY WEDNESDAYWEDNESDAYWEDNESDAYWEDNESDAYWEDNESDAY THURSDAYTHURSDAYTHURSDAYTHURSDAYTHURSDAY FRIDAYFRIDAYFRIDAYFRIDAYFRIDAY SATURDAYSATURDAYSATURDAYSATURDAYSATURDAY
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28
TechnicalBreakfast
Rock Physics SIG
GSHBoard Meeting
Valentine’sDay
TechnicalLuncheon
(West)Omni Palace
TechnicalLuncheon
(Downtown)Petroleum Club
MarchNewsletterDeadline
Technical Breakfast continued on page 3.
The Same Talk, Two Locations
Date 1: February 19, 2008Time: 11:30 a.m.Location 1: Omni Palace
12121 Westheimer Rd.Houston, TX 77077
Date 2: February 20, 2008Time: 11:30 a.m.Location 2: Petroleum Club
800 Bell St.Downtown Houston
Register Online: www.gshtx.orgCost: $30/members pre-registered$35/non-members, non-registrants
Title: The Role of Amplitudeand Phase In Processingand Inversion
Speaker:Tadeusz J. Ulrych,Professor Emeritus ofEarth and Ocean Sciences,SEG Spring 2008Distinguished Lecturer
Abstract:The object of seismic exploration isencoded in the data that are acquiredon or near the surface of the earth. The
Date: February 13, 2008
Time: 7:00 a.m. - 7:30 a.m.Breakfast & Social7:30 a.m. - 8:30 a.m.Presentation and Q&A
Location: Fugro Building6100 Hillcroft, Suite 100Houston, Texas 77274
Note: Please RSVP to Liz Ivie713-369-5863 [email protected]
Title: Design Concepts, ModelBuilding and PreliminaryProcessing Results from aDeep Water Gulf ofMexico 3D GeologicModel: The TempestModel and Dataset
Speaker:Adam M. Seitchik,Devon Energy Corp.
Abstract:In 2005, Devon EnergyCorp. initiated a project designed to helpaddress and understand imagingchallenges encountered by interpretersworking subsalt Gulf of Mexico Prestack
DataProcessing SIG
As I am writing this, oil has today, for the first time, reached $100. I do
not know what, if any, the psychologicaleffect of having hit triple digit oil priceswill be, nor how long the price may staythere, though it will be interesting towatch it all play out. 2007 was a recordyear for energy prices and also a strongfinancial year for the GeophysicalSociety of Houston.
Currently, the books are in the black andwe have no need to touch our long terminvestments. The society has aprofessionally managed investmentaccount worth, as of December 31, 2007,approximately $449,844. This is up from$432,582 and $391,029 at the sametime in 2006 and 2005, respectively. Thishas, in the past, acted as our reserve,should our income not meet our expenses.Hopefully we will not be required towithdraw from this account any time inthe near future.
The past couple of years have seen strongsupport for society activities and eventsfrom the membership and a variety ofcorporate sponsors, and hopefully this willcontinue to grow from both fronts. TheGSH board and all of the individuals who
~~~~~~~
~~~~~~~
HappyValentine’s
Day!
2 Geophysical Society of Houston February 2008 February 2008 Geophysical Society of Houston 19
GEOPHYSICAL SOCIETY OF HOUSTONSandra Babcock, Office/Business Accounts Manager • 14811 St. Mary’s Lane, Suite 250, Houston, TX 77079 • Office Hours 8 a.m. - 5 p.m.
Phone: (713) 463-9477 • Fax (713) 463-9160email: [email protected] • website - http://www.gshtx.org
GSH Board of Directors = GSH Executive Committee + SEG Section Representatives
Phone Fax EmailPRESIDENT _________________ George Marion _______ 713-408-0147 _____________________ [email protected]
Corp Relations ___________ Kathy Hardy _________ 713-862-0913 _____________________ [email protected] ________________ Art Ross _____________ 281-360-9331 _____________________ [email protected] ________________ Tom Fulton __________ 281-242-1806 _____________________ [email protected] ______________ George Marion _______ 713-408-0147 _____________________ [email protected] ________________ Lisa Buckner _________ 713-6094256 ____ 713-609-5666 ___ [email protected] Liaison _______ Art Ross _____________ 281-360-9331 _____________________ [email protected]
PRES-ELECT ________________ Frank Dumanoir ______ 713-576-3326 _____________________ [email protected] Liaison ________ Steve Danbom ________ 713-937-7530 _____________________ [email protected] ________________ Lee Lawyer __________ 281-531-5347 _____________________ [email protected] Referral _____ Sam Leroy ___________ 281-556-9766 ___ 281-556-9778 ___ [email protected] ___________________ Dave Agarwal ________ 281-920-4450 ___ 281-920-1576 ___ [email protected] _______________ Jerry Donalson _______ 713-464-6188 ___ 713-464-6440 ___ [email protected]
FIRST VP____________________ Robert Wegner _______ 713-899-9023 _____________________ [email protected] Education _____ Robert Wegner _______ 713-899-9023 _____________________ [email protected] ________________ Robert Wegner _______ 713-899-9023 _____________________ [email protected] Breakfasts __________ Marvin Taylor_________ 713-369-5864 ___ 832-367-3837(c) _ [email protected] luncheons __________ Cheri Williams ________ 713-465-3181 ___ 713-465-8416 ___ [email protected] Committee _________ Jim DiSiena __________ 832-854-4289 ___ 832-854-7606 ___ [email protected]
SIGSData Processing __________ Ray Abma ___________ 281-366-4604 _____________________ [email protected]________________________ Clive Gerrard _________ 281-509-8183 _____________________ [email protected] Fields ___________ Shawn Mulcahy _______ 281-874-6050 _____________________ [email protected] Physics ____________ Ayako Kameda _______ 281-544-4354 _____________________ [email protected]________________________ Ronny Hofmann __________________________________________ [email protected]
________________________ Ezequiel F. Gonzalez _________ 713-245-7841 ___ [email protected]
Multi-component _________ John Dai _____________ 713-689-6173 _____________________ [email protected]________________________ Mark Lee ____________ 713-689-2479 _____________________ [email protected]________________________ Tony Johns __________ 713-689-6633 _____________________ [email protected]
SECOND VP _________________ Haynie Stringer _______ 281-491-2045 ___ 877-552-0178 ___ [email protected] Meeting __________ Jim Moulden _________ 832-636-8665 ___ 832-636-5824 ___ [email protected] Banquet __________ Steve Davidson _______ 281-202-7838 (cell) _________________ [email protected] Tournament _________ Steve Tyrrell __________ 281-855-3662 _____________________ [email protected] Water Tournament ___ Bobby Perez__________ 281-240-1234 ___ 281-240-4997 ___ [email protected] Clays 2007 ______ Alan Foley ___________ 713-526-6680 _____________________ [email protected] Clays 2008 ______ Steve Mitchell ________ 281-275-7650 _____________________ [email protected] Tournament _______ Marvin Taylor_________ 713-369-5864 ___ 832-367-3837(c) _ [email protected]
SECRETARY _________________ Bob Gauer ___________ 832-351-8306 _____________________ [email protected] ________________ Paul Schatz __________ 713-975-7434 _____________________ [email protected] Membership ________ Jackie Moorehead _____ 832-351-8525 _____________________ [email protected] Auxiliary __________ Suzy Stepanek ________ 713-783-6888 _____________________ [email protected] Rep. _______________ Alf Klaveness _________ 713-465-8449 ___ 713-468-5123 ___ noneSEG Membership_________ Bob Gauer ___________ 832-351-8306 _____________________ [email protected]
TREASURER ________________ Steven Cochran _______ 281-509-8506 ___ 281-509-8091 ___ [email protected] _________________ Dwight Brown ________ 713-320-1330 _____________________ [email protected]
EDITOR _____________________ Fernanda Araujo ______ 832-486-2564 _____________________ [email protected] Editor __________ Glenn Bear ___________ 713-431-6583 _____________________ [email protected] Editor __________ John Sumner _________ 713-666-7655 _____________________ [email protected] Company Contacts ______ Scott Sechrist _________ 281-856-8029 ___ 281-856-7445 ___ [email protected] Pub ___________ Scott Sechrist _________ 281-856-8029 ___ 281-856-7445 ___ [email protected]_____________ John Sumner _________ 713-666-7655 _____________________ [email protected] _________________ Scott Sechrist _________ 281-856-8029 ___ 281-856-7445 ___ [email protected] Site ________________ Paul Schatz __________ 713-975-7434 _____________________ [email protected]
PAST PRESIDENT ____________ Kathy Hardy _________ 713-862-0913 _____________________ [email protected] PAST PRES. __________ Pat Peck _____________ 713-461-7178 ___ 713-468-7246 ___ [email protected] SECTION REPS _________ Lee Lawyer __________ 281-531-5347 _____________________ [email protected]
________________________ Art Ross _____________ 281-360-9331 _____________________ [email protected]†ALTERNATE SEG REPS _______ Dave Agarwal ________ 281-920-4450 ___ 281-920-1576 ___ [email protected]
________________________ Bill Gafford___________ 281-370-3264 _____________________ [email protected]
:
43”
)22eb
o=
Editor’s Note
18 Geophysical Society of Houston February 2008 February 2008 Geophysical Society of Houston 3
AuxiliaryTo ensure your information
reaches the GSH society membersin a timely manner it mustappear in the appropriatenewsletter issue. Please note thefollowing deadlines and plan yourfunction’s publicity strategy ac-cordingly. Items must bereceived on or before the corre-sponding deadline date. Pleasesend any obituary or memorial ar-ticles of recently deceased membersto the Editor for inclusion in thenewsletter. Materials can be emailedto Fernada Araujo, Editor [email protected] a copy sent to Glenn Bear [email protected]. Ifyou have any questions please callFernanda Araujo at 832/486-2564,or Glenn Bear at 713/431-6583.
2008 GSHNewsletter Deadlines
Issue ........................... March 2008Deadline ............... February 5, 2008
Issue ............................. April 2008Deadline .................. March 4, 2008
AnnouncementsTechnical Breakfast
February 13, 2008Technical Luncheon
February 19, 2008Omni Palace
Technical LuncheonFebruary 20, 2008
Petroleum ClubData Processing SIG
February 20, 2008Rock Physics SIG
February 20, 2008
The GeophysicalAuxiliary of Houston
Happy New Year!
S tart 2008 by joining GAH! This is a remarkable organization with outstanding women who know how to celebrate being affiliated with the Geophysical Society
of Houston.
* If you like fun and laughter, you have to join us at the JUNIOR LEAGUE OFHOUSTON on March 17th for great food and games.
* Get a tour of backstage, enjoy a mini opera performance in the Heights,and lunch at a known atmospheric restaurant on March 31st.
For information call Suzy Stepanek at 713 783 6888.
Museum News by Tom Fulton
W ith transistors now 60 years
old and so veryimportant in our livesyou might like someties between transistorsand exploration. John
Bardeen born in 1908 shares Nobel Prizesfor both the invention of the transistor anddiscover of superconductivity. He was alsoa geophysicist for Gulf Oil 1930 - 1933and produced the first formulae for upwardand downward continuation of potentialfields. The Sunday Chronicle here had apicture of him along with comments thatthe transistor was invented 60 years ago.As to the continuation formulae, accordingto Barry Davies, they were contained in anSEG work of Leo Peters, perhaps in
Geophysics volume 13 or 14 for which hereceived Best Paper in Geophysics in1949. Davies indicates that Bardeen’snotes were given to Dan Tudor to send tothe SEG in about 1987.
After Gulf, Bardeen went to Princetonfor a PhD in Math then to teach at the Uof Min. before going to the NavalOrdnance Lab. in 1941 to 1945(probably worked with Charlie Lash, afriend at Amoco) and then to Bell Labsin 1945 (I interviewed there in 1955)where the transistor was invented.
I was in Northern Japan on a GSI crew in1956 when TI sent a former Bell Labsinvestigator, Gordon Teal, to licensetransistor knowledge to Sony. At that time
about the only Sony product I canremember was a turntable accepting asingle, manually exchanged, phonographrecord. TI & Regency had introduced thefirst transistor radio in 1954 with Ratheon& Tokyo Tsvshin Kogyo (which becameSony) introducing radios in 1955. GordonTeal was born in Dallas in 2007 and is theco-inventor of the integrated circuit. He washired by TI in 1952 to be in charge of Semi-conductor R & D. It is neat to remember adinner of the crew and Gordon & wife at aGeisha House in Akita, Japan.
You are likely aware that TI was formed byGSI during WWII and became parent inabout 1951, and sold GSI to Halliburtonin 1988 to be combined with Geosourceand subsequently sold to Western.
TRANSISTORS & GEOPHYSICS
SMALL WORLD STORIES
Recently we were asked to relate stories about things that happened on seismic
crews during the time when interpretation wasdone in the field. I’ll stretch this to includetwo stories associated with the travelingdoodle bugger. The above places me as asingle “computer” or “seismologist” on a crewin Japan. With that contract completed it wasoff to East Pakistan (now Bangladesh) andIndia to complete the two year hitch. Will savestories of crew life on these two helicoptercrews to a later time but indicate that I leftIndia & GSI in 1958 to return home.
Fast forward to 1964. A wife, Emilie, anda job with Amoco R & D in Tulsa had beenacquired and we were taking her niece &nephew to the World’s Fair in New York.Having noticed that Amoco had an officeon 5th Avenue containing a geophysicistby the name of Mathews, a visit seemed tobe in order. While chatting with Mathewshe stated that my name was familiar to himand was on the back of some phonographrecords that he had. It turned out that Ihad sold or given my records to Don Southwhen I left Calcutta and that Mathews had
gotten them from Don IN ARGENTINA!!!On to the Fair and a visit to the VenezuelaExhibit (of interest because of workingthere in 1952 & 1953). A chat with thepart time desk guide, Oscar Faria, revealedthat he was the brother of sisters that Ihad dated in Maracaibo. It was not properthere to be seen with just one. The brotherhad been in Canada in school so I had notpreviously met him.
Please excuse my trivia, I would happilybe like Lee Lawyer and print Your stories.
Depth data. To accomplish this, Devondesigned and created a detailed 3Dgeologic model, generated a syntheticdataset and used it for testing variousprestack depth migration algorithms aswell as analyzing the advantages ofdifferent acquisi t ion designs. Thepurpose behind the design of the modelwas to evaluate the limits of currentseismic depth imaging software whenimaging complex geology given thevelocity model. The model and variousdatasets derived from the model weregenerated in 2006 and namedTempest. Depth imaging followed,beginning in mid-2006 and continuedinto early 2007.
The Tempest model represents saltrelated geologic features encountered inthe salt province of the deep water Gulfof Mexico and was generated with inputfrom the interpreter. Features in themodel include salt floored basins, weldedbasins, salt bodies, faults, vertical weldsand rafted sections in the basin(s) withwater depth ranging from about 1,800
feet to 9,000 feet and a total depth ofimaging to 42,000 feet. The Tempest3D dimensional geologic model is anacoustic velocity model (i.e. consists ofpressure ve loc i ty f ie ld ) , and thesimulated using an acoustic f initedifference wave equation modelingprogram, generating a shot sorted setof field records as primary output. Datawas recorded as both narrow as well aswide azimuth using a 3-boat marineacquis i t ion geometry. Fo l lowingacquisition, reference depth migratedvolumes were created by migrating thedata set with the known velocity modelgenerating Kirchhoff and WEM Narrowand Wide Azimuth datasets. Freesurface multiples were not included inthe acquisition.
Results from the Tempest project enablethe comparison of different depthmigration algorithms, highlighting theirpositives and negative attributes. Since themodel was designed based on real dataimages, the analysis of its results candirectly be used in comparisons to real data.
Biography:Adam Seitchik received a B.A. inGeology from Denison University and aM.S. in Geology from the University ofAlabama focusing studies on SeismicStratigraphy and Siliciclastic depositionalsystems. Adam began his career withMobil E&P, New Orleans in 1997working shelf exploration and providinglead support for AVO, Inversion, andNeural Network projects. After two years,Adam transferred to Mobil’s Gulf of
Mexico Deep Water Exploration groupworking regional salt interpretation projectsand identifying exploration opportunities inKeathley Canyon and Walker Ridge. Thiswork continued through the merger withExxon until he accepted a position withDevon Energy in their Deep Water Gulf ofMexico team. While at Devon, Adamworked many different regions of the deepwater gulf, most notably in Walker Ridgeand Eastern Keathley Canyon, capitalizing
and expanding Devon’s Lower Tertiaryposition. Through exploration work, hegained exposure to and experience withPreStack Depth Migration projectsranging from interpretation to initiatingand managing proprietary reprocessingprojects utilizing a variety of depthimaging algorithms. Adam is currently aSupervisor for Devon with responsibilitiesin Mississippi Canyon, Atwater and theEastern Gulf.
Technical Breakfast continued from page 1.
Technical Breakfast continued on page 18.
Technical Breakfast continued from page 3.
4 Geophysical Society of Houston February 2008 February 2008 Geophysical Society of Houston 17
To reserveyour
advertisementspace
or for rateinformation
contactLilly Hargrave
at:713-
463-9477
For Advertising information contactLilly Hargrave at: 713-463-9477
CONTACT US!HOUSTON• Steve Davidson• Michael Higgins• Doug Kuervera• John Linger
February 2008 Geophysical Society of Houston 516 Geophysical Society of Houston February 2008
President’s Column continued from page 1.President’s Column continued from page 1.
goal of decoding these data is ,essentially, to find out where and whatthis object is. Although we record ourinformation in space and time, wealways, at some stage, follow theteachings of Jean Baptiste JosephFourier and transform ourmeasurements into the frequencydomain. In this domain, our data livein the phase and temporal and spatialfrequency dimensions. The “where” isencoded in the phase, the “what” isencoded in both the phase andamplitude.
The aim of the processing of the datais to remove obscuring artifacts suchas coherent and incoherent noise,s ta t i c s , and the ub iqu i tous lydeleter ious effect of the seismicsource signature. The aim of inversionis to answer the question, “what?”Process ing in our indus t ry hasachieved an enviable level of success.This success, I will argue, has beenach ieved, to a la r ge ex tent , byconcentrating on the role of theamplitude properties of the inherentd i s tor t ions cause by undes i redcomponents. Phase has played amuch lesser role and consequently, sohas the re t r ieva l o f the v i ta linformation concerning the “where”.Inversion, successful as it has been,has also in my humble opinion, placedampl i tude in a lof ty pos i t ion ascompared to that of phase.
The purpose of this presentation is toconvince you that treating amplitudeand phase with the equal dignity thateach deserves can lead to someinteresting and important results.Specifically, I will deal with only-phasereconstruction, by which I mean theinversion of information by using onlythe phase component without any apriori assumption concerning theampl i tude (championed by AlanOppenheim and colleagues in the early1980s). I will also reintroduce, after a35 year absence from this field andbecause of exciting new developments,cepstral processing and its application
to the deconvolution of thin beds.Finally, I will foray into the dangerousterritory of attributes. Dangerousbecause there are so many anddangerous because I know so little.However, my colleagues (MauricioSacchi, Mike Graul, and Tury Taner)and I have recently had some hopefullyinteresting thoughts and results whichwe would like to share.
A picture is, of course, worth a 1000mumblings and so here is one. Figure1a shows an image; the ? is mine.Research group RFOA receives onlythe amplitude spectrum, combines itwith their best guess at the phasespectrum (=0 for example) andreconstitutes the image as shown inFigure 1b. Their conclusion? The imageis that of a cloudy sky. Research groupRFOP combines the received phasespectrum with their best guess at the
amplitude spectrum (=1, for example),reconstitutes the image as shown inFigure 1c and concludes that Tristanand Isolda are in love. This is anexample not of only-phase, but ofphase-only. The former producesresults that are even more informative.
Biography:
Tadeusz J. Ulrych was born some timeago in Warsaw, Poland. His travelsbegan early, 1939 to be exact, whenAdolf had a brain blitzkrieg. Followingsojourns in Rumania, Turkey, andCyprus, he ended up in London,England, where he obtained a B.Sc.degree in Electrical Engineering (like allgeophysicists?) at London University.A year working in ultrasonics convincedhim to seek deeper pastures and hemoved to Canada where, at theUniversity of British Columbia, hereceived both his M.Sc. and Ph.Ddegrees (1961 and 1963) in the studyof lead isotopes under Don R. Russell.His first academic position was asAssistant Professor at the University ofWestern Ontario. Following a thrillingPDF at Oxford and the Bernard PriceInst i tute at the Univers i ty ofWitwatersrand, Ulrych joined theUniversity of British Columbia wherehe has remained these many and happyyears. He has been an Invited Professorat PPPG (now CPGG) at the FederalUniversity of Bahia, the University ofKyoto and OPERA, University of Pau.He has consulted and given courses invarious locations around the globe, andcontinues to do so in spite of mandatoryretirement which earned him hispresent position of Professor Emeritus(office, graduate students, researchprojects, no salary but free parking).Tad’s interests are signal processing,information and inverse theory, and aplethora of other topics that changebimonthly. He has supervised a fewstudents, published some papers andcoauthored a book with MauricioSacchi. His hobbies include visits to thePyramids of Giza with his mostcherished wife, via camel.
organize the events work very hard toprovide activities and experiences that willadd maximum value to your membershipin the society. The fun and camaraderieof the social events alongside theeducation and networking providedduring the various meetings add to thereasons that one is a member of theGSH, and help to make us a strong andvibrant society. Your involvement andparticipation only makes these eventsmore successful and valuable.
As the GSH Treasurer for fiscal year 2007I want you to be informed of the financialworking of the society. As such, I’vecreated a couple of tables that provide afinancial summary of the GSH. Thesetables are linked to the president’s columnon our website www.gshtx.com. I haveincluded many of the categories of incomeand expense related to society activities,though left out some minor categories dueto space considerations. The valuesrepresent totals in a fiscal year. Someevents (particularly summer social events)span fiscal years, so may have money thatfalls into two fiscal years for one event.Some also have trailing and advanceexpenses/income, such as late arriving billsand deposits for forthcoming events thatmay cross fiscal year boundaries. I haveincluded several previous years forcomparison. Also, FY 2007 is onlythrough December 19, 2007 (it does notend until June 30, 2008). Please note thatthis is not an official accounting, just a quicksummary for your benefit.
Finally, I would like to thank SandraBabcock in the GSH office for her diligentand careful record keeping. Without herand Lilly Hargrave’s hard work every day,the society would not run anywhere closeto as smoothly as it does. If you have anyquestions concerning the finances of theGSH; I would encourage you to send mean email at [email protected].
Membership Committee Report
Census As OfDecember 13, 2007
Members GSHActive 851Associate 181Emeritis 54Honorary 28Lifetime 29Students-FT ___11Total Members 1154 FIGURE 1
FIGURE 2
FIGURE 3
Timothy LarsonGeraldine Maxwell
Eldar GuliyevJim Chodzko
Emil NassifRandall Robinson
Luis Ramirez
Sonia GrahamJohn CramerLarry Oakes
Alan ZickJohn Waggoner
Gordon GouldChris EggerEike RietschMark Hilliard
New ASSOCIATE Members:New ACTIVE Members:
Sightings Scenes from December Technical Breakfast
February 2008 Geophysical Society of Houston 156 Geophysical Society of Houston February 2008
Here’sMy Card...
To reserve your advertisement space or for rateinformation contact Lilly Hargrave at: 713-463-9477
T he first discovery using seismic methods wasOrchard Dome in Texas found in June 1924 by a
Seismos Refraction crew.
In 1925, Everette De Golyer formed the GeophysicalResearch Corporation with himself as President andJohn Clarence Karcher as Vice President. The followingyear, the GRC field tested an electrical seismograph.Newly-designed electrical detectors and amplifiersboasted increased sensitivity, and the use of theoscillograph improved the capacity of the recordingequipment to six channels. The use of reflection seismicmethods was established.
Item ofInterest...Item ofInterest...
Everette De Golyer
A clearer image www.pgs.com
Elephants communicate over long distances with a low-frequency subsonic rumbling thatcan travel through the ground farther than sound travels through the air. Discovery of thisaspect of elephant communication came with breakthroughs in audio technology, whichcan pick up frequencies outside the range of the human ear.
At PGS we’ve been listening to your needs and have significantly enhanced our depthimaging capabilities. We now offer AGS’ fast VMB and beam migration workflow blendedwith PGS’ preprocessing and high-fidelity imaging suite for wide-azimuth and multi-azimuth processing. Contact Kim Walsh at (281) 509-8117 to learn how we can deliverunmatched turnaround time, data quality and image clarity.
February 2008 Geophysical Society of Houston 714 Geophysical Society of Houston February 2008
Houston telephone: 713.973.5772 | Corpus Christi telephone: 361.882.8400
2D/3D Seismic Processing Services
www.3dimaging.net
More solutions, better results.3D Imaging is a complete seismic processing service company. Our employees have theknow-how, experience and resources to provide the best quality products in the industry,offering a complete range of 2D and 3D land, marine, seismic processing and imagingservices and has earned a reputation for delivering projects of exceptional quality andinnovation. Our state-of-the-art on-site seismic data processing services are offeredeither online or through our data processing centers. Our seismic processing facilitieshave highly experienced geo-scientists using industry-leading tools to provide accurateand timely solutions.
•PreStack Time/Depth Migration•Inversion•AVO Modeling•High Resolution Signal Processing•Geophysical Consulting
•Discontinuity Volumes•Reservoir Characteristics•Media Copies•450 Gigaflop Linux Clusters
February 2008 Geophysical Society of Houston 138 Geophysical Society of Houston February 2008
noitarolpxEdriBaeS noitarolpxEdriBaeS
www.fugro.com/geoscience/devprod/nonexcl.asp
Kenneth Mohn Mike Whitehead Marvin Taylor713-369-5859 713-369-5862 [email protected] [email protected] [email protected]
Fugro Multi Client Services, Inc.
Gulf of Mexico: In Depth & In Focus
All PSTM & PSDM available
10,000 meter PSTM, AVOLong Offset Data
Wave Equation & Gravity & MagneticsKirchhoff PSDM
February 2008 Geophysical Society of Houston 912 Geophysical Society of Houston February 2008
February 2008 Geophysical Society of Houston 1110 Geophysical Society of Houston February 2008
DATA PROCESSING SIG
Date: Wednesday February 20, 2008Time: 5:00 p.m.Social
5:30 p.m. TalksLocation: WesternGeco
10001 Richmond AvenueHouston, TX 77042 • Phone: 713 789 9600
Talk 1: Sorting the Weeds from the Flowers: Interference Noise on Seismic DataSpeaker: John Brittan, Petroleum Geo-Services, Walton-on-Thames, United Kingdom
Abstract:Interference noise is an increasingly common problem on many seismic datasets, especially those being acquired for use ina production, rather than exploration environment. The sources of this noise are numerous; for example: other seismicvessels, production equipment and installations, even the natural environment. This diversity of sources, and the correspondingdiversity of seismic noise characteristics, means that algorithms dedicated to suppressing the noise within a seismic datasetmust be highly adaptable in both their identification of the noise and their preservation of the underlying signal. In this talkI will look at a number of case studies of interference noise removal and, in particular, the problem of preserving theunderlying signal when the noise, especially in the pre-stack domain, has almost indistinguishable seismic characteristics.
Biography:John Brittan received a BSc in Physics from the University of Birmingham in 1992 and, thanks to a Shell Scholarship,a PhD from Imperial College, London in Geophysics in 1995. He then was a Royal Commission for the Exhibition of1851 Research Fellow at Imperial, being part of the team who undertook the first seismic profile across the K-Tboundary crater at Chicxulub and also being part of Imperial’s pioneering efforts in Full Waveform Inversion. Sincejoining PGS in 1997, he has worked on the research and development of data processing algorithms with particularinterest in the fields of multiple removal, time-lapse processing, travel-time tomography and noise attenuation. John ispresently Head of Processing Technology at PGS, which involves responsibility for all processing algorithms related totime processing and for the PGS processing system itself.
Talk 2: New Ideas in Noise SuppressionSpeaker: Stuart Trickett, Kelman Technologies, Calgary, Canada
Abstract:This talk is a gentle tutorial on two general statistical strategies for noise suppression. I avoid heavy mathematics in favourof intuitive understanding, and present many examples. In the first part of the talk I describe maximum-likelihood-estimation(MLE) stacking, which uses robust statistics to improve on one of the oldest estimation problems in seismic processing. Idiscuss the properties that a stacker should have (namely robustness and parsimony), how MLE stacking meets thesecriteria, and how it compares to previously proposed robust stackers. MLE stacking generates a new attribute - theprobability distribution of the noise as it varies with CMP and time - which may have uses other than for stacking. In thesecond part, I describe Cadzow filtering in the frequency domain, a powerful way to remove random noise that improveson f-x and f-xy deconvolution and projection filtering. The possible applications and variations of Cadzow filtering are nearlimitless, including pre- and post-stack random noise suppression, interpolation, erratic noise removal, hybrid Cadzow-eigenimage filtering, extension to any number of spatial dimensions, and automatic strength determination.
Biography:Stewart Trickett is Manager of Research and Development at Kelman Technologies, where he has worked for thelast fourteen years. He began his career in 1979 at Veritas Seismic in Calgary as a seismic applications programmer.Since then he has developed almost every type of seismic processing software, and was chief designer of Veritas’sSage and Kelman’s Kismet processing systems. He has written papers on deconvolution, noise suppression, stacking,and statics. Stewart has a B.Sc. in computer science (University of British Columbia) and an M.Math. in appliedmathematics (University of Waterloo).
ROCK PHYSICS SIG
Date: Wednesday, February 20, 2008Time: 5:30 p.m.Location: CGG Veritas
10300 Town Park Dr., Houston, TX 77072Title: Pressure-Transient Analysis and the
Elastic Characterization of Reservoir RocksSpeaker: Reynaldo Cardona, ChevronAbstract:Pressure-transient analysis is the generic name given to theinterpretation of pressure and flow-rate data measured atthe well location. Reservoir engineers use these data toestimate average permeability, average pressure, and storagecapacity of the rock pores assuming that the diffusionequation describes the fluid flow through the reservoir.
The condition of elasticity that is inherent in the diffusionequation links the storage capacity of the rock pores to thebulk modulus of the rock. Therefore, in theory, it shouldbe possible to use a parameter estimated by ReservoirEngineers (storage capacity) to place bounds on a parameterGeophysicists try to measure (bulk modulus) and vice versa.
In fractured rocks it can be shown, using Zimmerman’srock compressibility relations and Schoenberg’s linearslip theory, that the storage capacity ratio determinedby engineers may be related to the normal compliance
of the fracture system estimated by geophysicists. If it isassumed that the fractures behave elastically as pennyshaped cracks, then, the storage capacity ratio is afunction of the fracture density and fracture porosity.
This work presents an approach to integrate pressuretransient and multi-component seismic data to determinethe characteristics of single- and double-porosity reservoirs.The application of the approach developed in this work isdemonstrated by the analysis of the pressure buildup datafrom a fractured carbonate reservoir.
Biography:Reynaldo Cardona has a BSc. in Physics from the SimonBolivar University, Venezuela. He obtained his Masters inGeophysics from Stanford University in 1999 and his Ph.D.in Geophysics from Colorado School of Mines in 2002.He has been employed with Chevron since 2003.
SEG/EAGE Distinguished Instructor Short CourseApril 7, 2008
WesternGeco, 10001 Richmond Avenue
“Reservoir Geophysics”William L. Abriel, Chevron
This course demonstrates how and why geophysics adds value in reservoir management using examples from multiplegeological environments (deepwater turbidites, onshore fluvial, near shore deltaics, and carbonates). The instructor
examines and illustrates the dependencies of geology and engineering data on geophysical applications during reservoirmanagement and exposes participants to the variety of geophysical tools used in reservoir work focusing primarily onseismic data. Participants will become familiar with the application and value of geophysics for users (customers) as well asthe inherent risks and uncertainties.
The material is organized into 4 lectures and 2 student problems for a total of 6 hours and 30 minutes. The material isbased primarily on cases in oil and gas company activity with a strong reliance on Chevron experience. Material from theliterature and other contributing organizations is also used to ensure the best presentation of principles and examples.
This course is designed primarily for geophysicists of all backgrounds who are or will be supporting delineation, development,and/or production of oil and gas fields. This includes interpreters, processors, researchers and service employees. Thecourse is predominantly conceptual and graphical showing use by example, and no theoretical background in geophysicsis required. Therefore, the course is also highly applicable to geologists, engineers, and managers engaged in reservoirmanagement of oil and gas field and who use, or need to use, geophysics.
Mark your calendar.
Registration information
to follow next month.