The Exploration and Discovery History of the Guyana- Ghana Conjugate - - PowerPoint PPT Presentation

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The Exploration and Discovery History of the Guyana- Ghana Conjugate - - PowerPoint PPT Presentation

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com The Exploration and Discovery History of the Guyana- Ghana Conjugate Equatorial Corridor John R. Dribus, Global Geologist and Advisor, Dribus Geologic Consulting LLC Dribus

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

The Exploration and Discovery History of the Guyana- Ghana Conjugate Equatorial Corridor John R. Dribus, Global Geologist and Advisor, Dribus Geologic Consulting LLC

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

In creating this overview of the Guyana play, Dribus Geologic Consulting (DGC) has utilized various digital and industry data bases and reports from the public domain as input data. Sometimes these data sources do not agree. DGC has made every reasonable effort to reconcile such differences and select the most accurate information. However DGC is not responsible for any errors or incorrect attributions within the public domain, and does not represent or warrant that such material is complete, the most current, or most accurate. Consequently, DGC assumes no liability or responsibility for any errors or omissions in the content of this material. These contents are provided on an “as is” basis with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information. DGC does not claim ownership of or responsibility for any material that has been obtained from the digital public domain, and is not liable for any damages, whether direct, indirect, incidental, special, or consequential, arising out of or in connection with the use of this material. DGC LLC March, 2019

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

2018 Top Ten Exploration Discoveries

Modified after https://energynorthern.com/2018/12/17/the-oil-and-gas-exploration-winners-of-2018/ 13 Discoveries 5.5 Bboe Recoverable

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Top Ten Exploration Companies in 2018

https://www.ogj.com/articles/2019/01/rystad-energy-exxonmobil-leads-pack-of-top-explorers-in-2018.html

Guyana

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Location of Major DW Discoveries and Their Reservoir Rocks

Base map from www.columbia.edu/cu/news/01/07/marieTharp.html

Ta Ta Ta? Ta Ta Ta Ta Ta Ta Ta Ta Ta Ta Ta Ta Ta Ta Ta Ta Denotes Bouma “A” Fan turbidite systems C C C C C C C C C C

Denotes carbonate Systems

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Reservoir Characterization of Targets

Ta: Deep water Turbidites (more liquid systems) clastic sandstone reservoirs

  • Basin Floor Fan Systems (like Jubilee, Ghana and Shell Perdido, GoM)
  • Possible water-support, lower rock properties with higher rock volume
  • Channelized Systems (like GoM Tahoe, and TEN Field Complex in Ghana)
  • Most likely pressure depletion, higher rock properties with lower rock volume

C: Carbonate Reservoir (more gas) in reefs, (more oil) in microbialites (pre-salt)

  • Reefs and biological buildups (Zohr in Egypt and Calypso in Cyprus, Ranger???)
  • Very high column heights, very large areas and rock volume, top seal issues.
  • Microbialites/Stromatolites/Bioclastic grainstones (like Brazil pre-salt)
  • High CO2, possible H2S, very high flow rates, long lived production
  • Fractured carbonates, coquina grainstones, and bioclastic debris flows (reef rubble).

J Dribus 2019

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7

The Atlantic Ocean Basin and Mid-Atlantic Ridge (MAR)

Guyana Ghana

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Review of Plate Divergence

abyss.uoregon.edu/~js/images/plate_ev.gif

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Seven Current Key Deep water Exploration Plays

  • 1. Gulf of Mexico

Lower Tertiary Turbidite Fans

  • 2. Brazil

Presalt

  • 4. N. Sea Havis

Turbidites

  • 5. E Mediterranean Gas
  • 6. E. Africa

Turbidites

Base map from www.columbia.edu/cu/news/01/07/marieTharp.html

  • 3. Transform

Turbidites

  • 7. NW Australia

Dorado Oil Play

Base map from www.columbia.edu/cu/news/01/07/marieTharp.html

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Kosmos Jubilee Field, Offshore Ghana , 2007

The Kosmos Mahogany-1 discovered a hydrocarbon column of 270 meters (885 feet) of net oil pay in three stacked turbidite fan reservoirs in 2007.

Jubilee

The amalgamated fan discovery is now known as the Jubilee Field.

OFFSHORE: Tullow looking to extend prolific deepwater Ghanaian play Published: Oct 1, 2010 Exploration focus shifts towards Liberia, Latin America Jeremy Beckman Editor, Europe

The channel and splay discoveries are now known as the TEN Field.

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Modified after Exploration for Cretaceous stratigraphic traps in the Gulf of Guinea, West Africa and the discovery Jubilee Field: a play opening discovery in the Tano Basin Offshore Ghana. Geological Society, London, Special Publications Online. First published July 31, 2012; doi 10.1144/SP369.12 Geological Society, London, Special Publications v.369, first and Phil Lowry Paul Dailly, Tracey Henderson, Eric Hudgens, Kathy Kanschat

Dip Line and Map Showing Structural Influence on Trap

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Types of Sediment Turbidity (Gravity) Flows

(Hybrid)

Hyperpycnite

http://www.carec.com.pe/biblioteca/biblio/6/48/7%20Deepwater%20-%201.pdf With Permission from

  • Dr. Roger Slatt, 2015
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  • Arnold Bouma (1962) proposed a turbidite classification scheme that relates lithology

and texture to flow processes and energy. The model assumes waning flow (negative acceleration with respect to time).

Bouma Turbidite Sequence

  • This model is by far the most used facies classification scheme for turbidites in the

literature today.

Core

HHemipelagic V Fine Mud Laminated Muds

Finer Cross Bedded Silts

Finer Laminated Sediment

Massive Coarse Sediment

Lithofacies Model Outcrop

Td

13

Ta Tb Tc Td Te Ta

Modified from skywalker.cochise.edu/.../pglnx/chapter10x.htm

http://www.carec.com.pe/biblioteca/biblio/6/48/7%20Deepwater%20-%201.pdf

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Amalgamated Bouma Ta/b Sequences

Modified from skywalker.cochise.edu/.../pglnx/chapter10x.htm

Creates a sand that appears to be massive, but is actually an amalgamated series of Bouma a/b sequences. If the mud member survives, a layered sheet sequence is deposited with much Less storage space

Layered Sequences

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(Modified from Morris, 1971)

1. Continual pelagic rain of fines from suspension creating ductile mud layers 2. Periodic falling stage lateral mass transport mud flows coming down the slope to form brittle shale units 3. Lowstand turbidity currents that deposit cyclic, lateral basin floor fans

CONTINUAL PELAGIC RAIN

Three Components of Deep water Deposition

Ductile Pelagic Shales

Shelf Abyssal Plane

  • J. Dribus 2018
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(Modified from Morris, 1971)

The Turbidite Reservoir Sandwich

1. Pelagic fines from suspension creating ductile mud layers 2. Periodic lateral mud flows coming down the slope as brittle shale layers 3. Cyclic, lateral basin floor fan reservoir rocks

  • J. Dribus 2018
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(Special Permission from C.R.Scotese, 2012)

As the southern area rifts, the north margin begins to slide apart along a major stair-stepped transform system

Jurassic 125 MYA: Asymmetric Rifting Initiates in South

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NA

The Late Cretaceous Major Transforms and Jubilee

(Special Permission from C.R.Scotese, 2012)

These major shear systems sever the rift and create a transform basin between them with high gradient margins and major clastic sediment influx.

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Beginning with Jubilee in Ghana: Extending the Play Westward

Exploration began with the discovery of Jubilee in Ghana and moved westward to Liberia and Sierra Leone. Then the jump was made across the Atlantic to the conjugate Zaedyus discovery in French Guyana

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Modified after: instruct.uwo.ca/earth-sci/200a-001/11rifts.htm

Pecem, Ceara Basin: 140m of oil in turbidite fans Pitu, Potiguar Basin: 188m column of intermediate 24º gravity API oil

Jubilee Analog Applied Across the Basin to the Conjugate Side

Orca and Kronos gas discoveries in Colombia. The Zaedyus well found 72m of pay in three fans. The Ghana Jubilee Fan Discovery: 270m oil in 3 fans. The Exxon Liza oil Discovery in Guyana

Following the Zaedyus well, exploration on the S American side moved westward to Colombia Orca and Kronos gas discoveries, and then oil at Pitu and Pecem offshore Brazil, and then the giant oil discovery at Liza in Guyana

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1999: Stabroek Block awarded to Exxon (Esso). 2000: Exxon completes new electromagnetic survey over the block. 2009: PGS completes a 2-D multi-client seismic survey over the block. 2011: CGG-Veritas acquires another 2-D seismic survey over the block. 2011: Tullow announces a 72 m oil discovery in two U Cretaceous fans in the Zaedyus well (800 MMboe estimated) east of Guyana. 2013: Exxon completes processing a 3-D seismic survey with CGG. 2015: Liza-1 well spuds after Hess and Nexen (CNOOC) join. The well drilled to 17,825 ft through an U Cretaceous fan complex, and found 295 net oil in two fan complexes in a stratigraphic trap system.

History of ExxonMobil Activity in Guyana, Stabroek Block

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Discovery History for Guyana Stabroek Block

LIZA-1 295’ OIL LIZA-2 190’ OIL LIZA-3 1.4 BBbls PAYARA-1 95’ OIL LIZA-3 lower Adds 100MMbo LIZA-4 197’ OIL SNOEK-1 82’ OIL PAYARA-2 Adds 500 MMbo TURBOT-1 79’ OIL RANGER-1 230’ OIL CARBONATE PACORA-1 65’ OIL

13 Discoveries= 5.5 Bboe recoverable (without Ranger numbers)

LONGTAIL-1 256’ OIL HAMMERHEAD-1 197’ OIL PLUMA-1 121’ oil TALAPIA-1 305’ oil Liza-5 Development HAIMARA-1 207’ G/C YELLOWTAIL-1 292’ oil RANGER-2 Appraisal HAMMERHEAD-2 Appraisal TRIPLETAIL-1 Wildcat

NOTE: Each star color is a separate discovery.

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Ranger Carbonate Discovery: A New Play Opener!

Exxon and partners found 230 feet of oil pay in high-quality carbonate reservoir in the Ranger-1 wildcat offshore Guyana (red star), 60 miles NW of Exxon’s Liza turbidite fan play discovering an entirely new play type for the area. Exxon, Hess, and CNOOC estimate that the Stabroek Block offshore Guyana holds 5.5 Bboe recoverable in turbidite fan and channel systems in multiple accumulations ranging in age from Cretaceous to Tertiary. The Ranger carbonate play is currently under appraisal. A continuous exploration drilling program is planned along with development drilling for the Liza phased

  • development. Other blocks remain to be explored.

https://www.google.com/search?q=exxon+ranger+discovery&source=lnms&tbm=isch&sa=X&ved=0ahUKEwju4svU js7iAhUqgK0KHZ5PA6oQ_AUIESgC&biw=1920&bih=876#imgrc=stNhderIOVwBMM:&spf=1559592462425

RANGER-1

https://seekingalpha.com/article/4240592-guyana- suriname-basin-emerging-petroleum-province

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Turbidite Fan and Carbonate Build-up Plays

Modified after Hess Investor Day Presentation, 2018.

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Other Prospective Blocks in the Area?

http://www.worldoil.com/news/2018/4/30/hess-acquires-interest- in-new-acreage-offshore-guyana DEMARARA BERBICE CORENTYNE CANJE KAIETEUR

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Ultra Deep Water Guyana Attracting Attention

Hess announced an agreement with ExxonMobil to acquire a 15% interest in the Kaieteur Block,

  • ffshore Guyana located to the

north of the Stabroek Block. The Kaieteur Block is 3.3 million acres which is equivalent to more than 580 deepwater blocks in the Gulf

  • f Mexico. Significantly, the

Kaieteur Block lies in the same geological basin as the Stabroek Block, where total recoverable resources of more than 5.5 Bboe have been discovered by 13 wells to date.

http://www.worldoil.com/news/2018/4/30/hess-acquires- interest-in-new-acreage-offshore-guyana

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Suriname Poses a Concern for Reservoir and Seal

  • The potential for Suriname is significant according to Staatsolie who has identified and

ranked 15 prospects there. The company had planned to drill a 10-well exploratory campaign from April, 2019 to December 2019.

  • The big question is how far does the potential in the Guyana-Suriname Basin extend across

the border into Suriname? Is the reservoir fan system there, is the reservoir quality good, and are the necessary seals present?

  • Tullow drilled a dry hole offshore Suriname at the Araku oil prospect on Block 54 in 2017.

This was a Jubilee look-alike play in the shelf directly up-dip from the Liza oil-discovery, but it did not find good reservoir rock. The prospect had oil seeps up-dip, and sharp AVO responses and is ~5x the size of Jubilee. The concern is that the AVO response may not distinguish hydrocarbon phase or reservoir quality.

  • The Kosmos Anapai and Pontoenoe wells have both found good reservoir rock, but

with no commercial hydrocarbons.

CONCERNS: 1. Top/bottom seal, 2. Poor Reservoir, 3. False positive AVO.

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Key Learnings from the Other side

Base map from www.columbia.edu/cu/news/01/07/marieTharp.html

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The Mauritania, Senegal, Gambia, Guinea Bissau and Guinea Conakry (MSGBC) Basin Discovery Corridor

FAN and SNE Oil Discoveries

https://www.google.com/search?biw=1536&bih=708&tbm=isch&sa=1&q=msgbc+fields&oq=msgbc+field s&gs_l=psy-ab.3...15004855.15009697.0.15010120.12.12.0.0.0.0.250.1973.0j1j8.9.0....0...1.1.64.psy- ab..3.6.1381...0j0i67k1j0i24k1j0i10i24k1.NVHp-l-ggkI#imgrc=DxlAjsgFkcYXVM:&spf=1502682690174

Mauritania Senegal The Gambia Guinea Bissau Guinea Conakry

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Senegal FAN #1 and SNE #1 Discoveries

2250 MMBO Discovered

https://www.google.com/search?q=flemish+pass+discoveries&biw=1010&bih=539&source=lnms& tbm=isch&sa=X&ved=0ahUKEwjT_aHnvL7KAhXhwYMKHdqCDs8Q_AUIBygC#tbm=isch&q=sene gal+discoveries&imgdii=GaK-RtWUQC8zXM%3A%3BGaK-RtWUQC8zXM%3A%3BEY0Vpc- ReEiy8M%3A&imgrc=GaK-RtWUQC8zXM%3A

The FAN-1 discovered several amalgamated sets of Cretaceous draped turbidite fans pinching out against the paleo-shelf. P50 reserves are 950 MMboe ranging from 28 to 42 degree API. The SNE-1 is an unconformity truncation play that found 30 meters of net reservoir interval over a 60-100 km2 area. The SNE-2 appraisal well flowed 32°API oil at ~9,000 BPD from two zones. SNE source rocks are the same age as those from the FAN discovery, but not the same mix of APIs (different source rocks?).

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Abundant Opportunity Remains in the Area!

file:///C:/Users/jdribus.DIR/AppData/Local/Microsoft/Windows/INetCache/Content. Outlook/5J4HRO9G/2018%20Investor%20Day%20(PRESENTATION)%20(1).pdf

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More Guyana & Suriname Wildcats on the Drill Plan!

Jethro-Lobe-1 Tullow June 2019 Orinduik Block Joe-1 Tullow July 2019 Orinduik Block Carapa-1 Repsol Aug 2019 Kanuku Block Kamarang-1 Repsol Nov 2019 Kanuku Block Utakwaaka-1 CGX Nov 2019 Corentyne Block Apetina -1 Kosmos H-1 2019 Block 42 Suriname Walker -1 Kosmos Block 42 Suriname (Carbonate) Suriname Apache to drill Block 58 near Haimara Suriname Petronas considering Block 48 well

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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

SEVEN Key Learnings from the Wells and Regional Geology

  • 1. Reservoir Quality: Silt in the reservoir degrades the rock quality.
  • 2. Reservoir Quantity: Amalgamated is superior to layered system.
  • 3. Seal Quality: Pelagic ductile shales seal, chaotic MTD’s may not.
  • 4. Top seal is very important: as is BOTTOM SEAL!
  • 5. Confined channels versus unconfined fans.
  • 6. Oil versus Gas: Kerogen type and source rock temperature.
  • J. Dribus 2018
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For Questions call John Dribus 504-232-2221, jdribus@hotmail.com May, 2019 Dribus Geologic Consulting LLC

Are there any questions? John Dribus 504-232-2221 jdribus@Hotmail.com