Highresolution lithospheric imaging with seismic interferometry
MULTI-CLIENT SEISMIC IMAGING newsletter - Spectrum · PDF fileMULTI-CLIENT SEISMIC IMAGING ......
Transcript of MULTI-CLIENT SEISMIC IMAGING newsletter - Spectrum · PDF fileMULTI-CLIENT SEISMIC IMAGING ......
61
Spectrum’s new-look quarterly news round-up
2nd Quarter 2013
newsletterMULTI-CLIENT SEISMIC IMAGING
Seamless Seismic
Also in this edition...•Potiguar survey completed offshore Brazil•New Brazil/Uruguay Pelotas Basin surveys•Lebanon 3D seismic program extended
•South Africa seismic program complete•Record spending in Brazil license round•Spectrum moves Perth office
A new tool for exploration offshore Norway
Seamless Seismic:A Unique Norwegian 3D Seismic DatabaseIn February 2013 Spectrum launched the latest addition to its global seismic data library: Seamless Seismic. Seamless establishes a significant footprint for Spectrum on the Norwegian Continental Shelf adding 3D seismic data cubes covering approximately 125,000 square kilometers of the Norwegian Continental Shelf (NCS) and more than 80,000 kilometers of merged and matched 2D data in the Barents Sea. The launch of this product followed Spectrum’s acquisition of the Norwegian companies Carmot Seismic AS and Carmot Processing AS. Seamless Seismic is created through the utilisation of a high quality 3D merge process and applies this to the public domain 3D data. The process includes a careful evaluation of the quality of the input surveys and a comprehensive processing flow resulting in uniform and seamless 3D volumes. These cubes are offered for sale to oil and gas companies including updates as new surveys become available and a service for clients to merge their proprietary surveys. In benchmark tests oil companies prefer the quality of the data processed through this 2nd generation merge process developed by Carmot Seismic. “The vast amount of 3D data acquired by the industry on the NCS over the past 3 decades is one of the most valuable assets in the Petroleum National Data Set and
Example of 2D section through 6 merged 3D surveys.
Map of Seamless Seismic coverage including examples of the data
has contributed greatly to the exploration success in mature areas offshore Norway over the past few years.” commented Spectrum CEO Rune Eng, “Spectrum recognizes the high quality of the 3D cube compilations processed by Carmot and we are pleased to be able to offer these products and derivatives of it to the O&G companies through the Spectrum organization. The Carmot products will be a valuable tool/platform in Spectrum’s growth plan in Norway.” Following this acquisition Spectrum will offer 3D cubes covering approximately 60,000 sq. km in the North Sea, approximately 50,000 sq. km in Mid-Norway and approximately 17,000 sq. km in the Barents Sea. Velocity cubes covering these three areas are also available. The Seamless Seismic data is continually updated with newer released surveys. For a new survey to be merged it must either give new coverage or better quality. Experience has told us that newer surveys don’t always give better quality. Non-public 3D and 2D data may be included if the customer has the rights to use it. We have created a flexible process to merge additional seismic data. For more information on Seamless Seismic data or the merge process, please visit out dedicated web pages at: www.spectrumasa.com/seamless
KEYSpectrum 2D data librarySeamless Seismic 3D VolumeSeamless Seismic 2D Grid
+47 9018 [email protected]/seamless
New Surveys Offshore Uruguay and Brazil Increase Pelotas CoverageSpectrum has completed acquisition of 7,500 km of 2D seismic data in the Pelotas Basin, to complement our extensive 2D library in Uruguay. The Pelotas data has been acquired with 12,000 m offsets and 13 second records to provide an optimal image of the deep basement and source rock section.
The processing sequence will include both SRME and Radon demultiple steps prior to PSTM and PSDM. PSTM
stacks for Pelotas will be available in July, 2013 and PSDM stacks will be available in October, 2013.
Following the completion of this survey, Spectrum has now commenced a new MC 2D survey in the Pelotas basin in Uruguay. The survey is planned for 4,000 km, partly over held acreage and partly over open, ultra deep water acreage in the Oriental del Plata basin, in anticipation of the third licensing round in Uruguay, expected to be held in 2015. The survey is supported by industry funding. The seismic data is being acquired by the Seabird vessel Hawk Explorer and the data will be processed at Spectrum’s processing center in Houston, with the final products scheduled for delivery in late 2013.
Both surveys will tie existing seismic data held by Spectrum offshore Uruguay with full fold.
Spectrum announced today that it has completed the processing on the final phase of its Equatorial Margin long offset 2D campaign for Round 11 offshore Brazil. The data for the 4,133 kilometer Potiguar Basin survey is complete and available for immediate use to evaluate the six blocks being offered in the Potiguar Basin for Round 11. With the completion of the Potiguar Survey, Spectrum now has in excess of 38,000 kilometers of new long offset 2D data available to assist industry in evaluation of the blocks on offer for round 11 offshore Brazil.
Potiguar survey offshore Brazil completed
Example seismic section from the Potiguar survey
Example seismic section from the Potiguar survey
Spectrum Extends Lebanon 3D Multi-Client Seismic Coverage
Spectrum has announced the completion of another Multi-Client 3D survey in the Levantine Basin offshore Lebanon. This new survey covers 2,296 square kilometers and acquisition was performed by Polarcus using its 12-streamer vessel ‘Adira’. The survey covers both the northern part of the Levantine Basin and the basin margins and is located directly North of Spectrum’s recent 3,052 square kilometer Multi-Client 3D survey that was acquired last year. New survey lines fall within licensing blocks 1, 3, 5 and 6 of the first Lebanese offshore licensing round as announced by the Lebanese government in the official round opening on April 30. A fast-track product is currently being made available for delivery to clients by end of June 2013. The final
processed product will be available during August, well in time before the closing of the Lebanese 1st licensing round in November 2013. Successful interpretation of the existing 3D data acquired by Spectrum in 2012 has triggered the execution of this further acquisition to the north of the original survey. The 2012 data, now available to license, indicates that these areas offshore Lebanon have a high likelihood for generation and trapping of thermogenic hydrocarbons. It also indicates large, simple structures with a compelling reservoir case, suggesting that exploration drilling should provide good results.
Spectrum 3d data offshore LebanonLEB3D-12 3,052 sq km
• Acquired 2012 by Dolphin & Fugro• 12 / 8 streamers, length ~7km• 9.5 sec record length @ 2ms sample rate• Deliverables include stacks, gathers, near/mid/far angle stacks
and velocity cube
LEB3D-13 2,296 sq km
• Acquired 2013 by Polarcus• 12 streamers, cable length 7.5 km• 9.5 sec record length @ 2ms sample rate• Deliverables include stacks, gathers, near/mid/far angle stacks
and velocity cube
SyriaSyria
LebanonLebanon
CyprusCyprus
IsraelIsrael
JordanJordan
Al Biqa'Al Biqa'
HazafonHazafon
As Suwayda'As Suwayda'
SaydaSayda
Ash ShamalAsh Shamal
Jabal LubnanJabal Lubnan
LimassolLimassol
LarnacaLarnaca
FarmagustaFarmagusta
HefaHefa
An NabatiyahAn Nabatiyah
BayrutBayrut
DimashqDimashq
HimsHims
Block FTPAO
Block GTPAO
Block 02ENI SPA
Block 09ENI SPA
Block 03ENI SPA
Block ETPAO
Block 12NOBLE EN
Gal (202)RATIO
Block BTPAO
Lela (372)NAMMAX OG
Amit (350)NOBLE MD
Hanna (351)NOBLE MD
Alon A (364)NOBLE MD
Alon E (368)NOBLE MD
Alon B (365)NOBLE MD
Alon D (367)NOBLE MDAlon C (366)
NOBLE MD
Ruth A (358)NOBLE MD
David (352)NOBLE MD
Ruth D (361)NOBLE MD
Rachel (349)NOBLE MD
Ruth B (359)NOBLE MD
Ruth C (360)NOBLE MD
Ishai (370)NAMMAX OG
Yahav (373)NAMMAX OG
Aditya (371)NAMMAX OG
Block CTPAO
Yoad (374)NAMMAX OG
Alon F (369)NOBLE MD
Tamar I/12NOBLE MD
Dalit I/13NOBLE MD
Eran (353)NOBLE MD
Yam Hadera (383)MODIIN
Offshore Block I
Offshore Block II
Offshore Block III
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37°0'0"E
36°0'0"E
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Map showing Spectrum's 2D surveys offshore, Lebanon. Datum: WGS 84Projection: UTM 36NDate: 24 May 2013
±0 10 20 30 405
Km
1:606,453
Spectrum's 2D and 3D surveys offshore Lebanon
LEBANON
LegendSpectrum Lebanon 3D 2013 area (p698)
Spectrum's LEB3D-12 survey 3051.88sqkm
Leb02 Repro 2012 Approx 2,000 km
East Med 2000 PSTM Repro 2011
East Med 1975 reprocessed 1999
Syria 2D 2005 Repro 2011 Approx: 4,900 km
Lebanese Offshore Boundary
Licenced_AreasCategory:
Open / (other)
Contract
Spectrum 2d data offshore LebanonEMED-00 12,303 km
• Reprocessed in 2011 by Spectrum• 7.2 km cable length; 12 sec record length• Regional 2D survey, ties offshore Cyprus, Syria and Lebanon• Final PSTM stacks, offset stacks, PSTM gathers, angle stacks,
final migration velocities, PSDM (2007) stacks only
LEB-02 2,000 km
• Reprocessed in 2012 by Spectrum• 6 km cable length; 9 sec data length• 2D survey extending along the near-shore off Lebanon• Final PSTM stacks, offset stacks, PSTM gathers, angle stacks,
final migration velocities
Map of Spectrum’s 2D & 3D seismic offshore Lebanon
South Africa Survey Completed Following ExtensionSpectrum has completed the latest phase of its extensive 2D Multi-Client campaign in South West Africa over the South Africa Orange basin. Originally planned to cover 9,000 km, the survey was extended to 10,500 km following strong client demand for the additional coverage. The program ties in with seismic data held by Spectrum over the Namibia Orange Basin, acquired in 2012.
The seismic data is currently being processed at Spectrum’s seismic imaging center in the UK, with the final products scheduled for delivery at the end of mid-Q3 2013. The survey is supported by industry funding.
Many geological experts agree that there is a general underestimation of the oil and gas potential offshore South West Africa. This potential is now finally being revealed through the use of new exploration technologies which are rejuvenating this margin. Abundant oil seeps, basin model studies and high resolution 2013 seismic underpin excellent prospects for exploration drilling campaigns.
In neighbouring Namibia the first offshore exploration well, Kudu 9A-1, was drilled in the Orange Basin and discovered gas between 1.3 and 3.0 TCF in Lower Cretaceous sandstones intercalated with volcanic layers. The Orange basin hydrocarbon discoveries have primarily been gas, leading to the perception that the region is primarily gas prone. However previous studies have proposed an oil case for these basins. A number of oil shows/indications in wells imply there is a working oil prone hydrocarbon system present in the shallow water areas and can be extrapolated into the deepwater.
NamibiaNamibia
AngolaAngola
South AfricaSouth Africa
BotswanaBotswana
Northern CapeNorthern Cape
CuneneCunene
Western CapeWestern Cape
Cuando CubangoCuando Cubango
KgalagadiKgalagadi
OwamboOwambo
KaokolandKaokolandKavangoKavango
HuilaHuila
DamaralandDamaraland
Hereroland OosHereroland Oos
NgamilandNgamilandGrootfonteinGrootfontein
NamalandNamaland
BoesmanlandBoesmanland
Hereroland WesHereroland Wes
MoxicoMoxico
Eastern CapeEastern Cape
Block 5/6ANADARKO
060TCPNEW AGE
Block 1CAIRN IN
Block 3A/4A TCPPETROSA
Outeniqua South AreaTOTAL
Orange Deepwater AreaSHELL SAU Block 3A/4A
BHP GB
Block 3B/4BBHP GB
Block 07ANADARKO
Block 1810GRISHAM
Block 2213ECO OG
Block 2514LEKOIL
Block 2614UNIMAG
Central Orange BasinSUNGU PT
Block 2715AFRICAN IN
Block 2713KUNENE EN
Block 2613COWAN PET
Blocks 2013B, 2014B, 2114ECO OG
West BredasdorpEXXONMOBIL
Block 1711ENERGULF
Block 2913BGRISHAM
Blocks 2313A&B, 2413AMAUREL PR
Blocks 2312A/B, 2412A/BENIGMA OG
Blocks 2512A, 2513, 2612ASERICA EN
Blocks 2012B, 2112A, 2113BPCL
Block 1710ALPHAPETRO
Blocks 2913A, 2914BSIGNET PT
Blocks 2815, 2816 and 2915ORANGE PT
055TCPSILV WA EN
Blocks 1913B, 2013ACSG EN
Blocks 2011B, 2111AORANTO
Blocks 1910B, 2010AJUPITER PT
Blocks 2111B, 2211AECO OG
Blocks 2112B, 2212AHRT WA
Block 13ALROSA
Kudu IIITULLOW
Block 2CANADARKO
Block 2CFOREST INT
Blocks 1910A,1911A,1912B,2011AROPAT
Block 1811AENIGMA OG
Block 1811BKAYUCO
Blocks 1910A, 1911, 2011AREPSOL
Block 2012AECO OG
Block 2010BORANTO
Block 2113ANABIRM EN
Block 2BTHOMBO PT
Block 2212BMAUREL PR
Block 12ALROSA
Block 2813BREGALIS PT
Block 2714APETROBRAS
Block 2AFOREST INT
Block 2612AAMIS EN
Blocks 2412Ba , 2413BNAMCOR
OK Energy 1 TCPOK ENERGY
F-E Prospect AreaPETROSA
20°0'0"E
20°0'0"E
15°0'0"E
15°0'0"E
10°0'0"E
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5°0'0"E
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15°0
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A ma to show Spectrum's multi-client 2D seismic surveys offshore Namibia and South Africa. Datum: WGS 84UTM: 33SDate: 30 May 2013Map ID: SA3005
±0 90 180 270 36045
Km
1:3,500,000
Spectrum's multi-client 2D in Namibia and South Africa
Spectrum's multi-client 2D seismic surveys offshore Namibia and South Africa
LegendSouth Africa SPOB12 v23 10,490 km
Namibia 2012 reprocessing project Approx: 4,380km
Namibia EC 89 2D Approx: 4,100 km
Namibia GNA 97 Approx: 1,200 km
Namibia N2R93 Spectrum TGS/Shared Ownership
Namibia NAM 92 Approx: 2,600 km
Namibia RON 97 Approx: 2,900 km
Namibia SCLB 12 Approx: 5,400 km
Namibia SCNL12 Approx: 1,100 km
Namibia SCOB 12 Approx: 8,100 km
Namibia SN 96 Approx: 500 km
Namibia VERNLB 06 Approx: 6,300 km
Namibia VERNOB 03 Approx: 3,500 km
Namibia VERNWB 03 Approx: 1,100 km
Namibia SCSW12 Approx: 1,400 km
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10000.010500.011000.011500.012000.012500.013000.013500.014000.014500.015000.015500.016000.016500.017000.017500.0SP:
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Above: Spectrum’s Multi-Client seismic coverage offshore SW Africa
Below: Seismic example of Line 13 from the SPOB-12 South Africa survey
Record Spending at Brazil’s 11th Oil and Gas AuctionBrazil’s 11th oil and gas auction, held Tuesday 14th May in Rio de Janeiro, raised a record R$2.8 billion (US$1.37 billion), the industry’s regulatory agency said, with Petrobras winning the most blocks, and oil giants, BP, Total, Chevron and ExxonMobil also gaining rights to explore new areas.
The result exceeded the goal of R$2 billion (US$980 million) set by Brazil’s National Petroleum Agency (ANP) president, Magda Chambriard. “We are extremely pleased with the results, which surpassed all expectations,” Chambriard reportedly said. “142 of 289 blocks offered were auctioned, which will ensure minimal investments in the exploration phase of R$7 billion (US$3.43 billion) – in this case a premium of 628 percent over the minimum stipulated by the agency. All records of previous rounds were broken.”
The hotly anticipated bidding round – Brazil’s first for five years – offered blocks in Brazil’s equatorial margin. Although there is no guarantee that oil or gas will be produced from these blocks, there is excitement about the region, as it is geographically similar to equatorial areas of Africa that have proved fruitful.
Of the 289 blocks on offer, 142 were sold, or 100,300 km2 of 155,800 km2 offered, with oil companies offering as much as 40 times the minimum bid required.
A total of 39 companies from twelve countries participated, of which thirty won blocks. Out of these thirty winners, twelve were domestic companies and eighteen foreign, including two firms from the United States (Chevron and ExxonMobil), three British firms, four Canadian and one Norwegian. Petrobras bought, either on its own or in partnerships, rights to 34 of the 289 blocks in the Foz do Amazonas, Espírito Santo, Parnaíba and Barreirinhas Basins, for R$539.9 million (US$264.71 million).
BG Group paid R$415.5 million (US$203.72 million) for ten blocks and OGX, the oil and gas arm of Eike Batista’s EBX conglomerate, paid R$376 million (US$184.35 million) for thirteen. OGX’s substantial outlay was a surprise to many observers, as the company has been struggling financially since its only producing well, in the Turbarão Azul field in the Campos Basin, generated disappointing results last year. France’s Total won ten blocks for R$371.9 million (US$182.34 million), and BP committed R$261.3 million (US$128.11 million) for eight. The winners will have five to eight years to develop their projects and 30 years to explore their fields, according to ANP.
Brazil’s pre-salt region, which is thought to hold as much as 35 billion barrels of recoverable oil, will be auctioned in a separate November auction. A third bidding round will be held in December for unconventional gas deposits like shale.
Source: The Rio Times
New Perth Office for SpectrumOn 1st June Spectrum’s Australian division moved across town to new office facilities in the heart of Perth’s central business district. The contact details for this office, including a new switchboard phone number, can be found below:
105 St Georges TerracePerthWA 6000Australia
Tel: +61 8 9322 3700Email: [email protected]
United KingdomSpectrum Geo Ltd.+44 1483 730201 [email protected]
United StatesSpectrum Geo Inc.+1 281 647 0602 [email protected]
SingaporeSpectrum (Singapore)+65 6827 [email protected]
AustraliaSpectrum ASB Pty Ltd.+61 8 9322 [email protected]
www.spectrumasa.com
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