22. Suriname – Block 58, Apache, Sapakara West-1 prospect

Sapakara West 1
22 Suriname – Block 58, Apache, Sapakara West-1 prospect V.5.2.20

My best educated guess (5th february 2020):

Will most certainly be the 2nd significant petroleum (light oil & condensate) discovery offshore Suriname.

Rien ne va plus. Faîtes vos jeux. Somewhere beginning April 2020 we will know hopefully.

April 02, 2020:

Significant discovery, announcement by Apache / Total (http://investor.apachecorp.com/news-releases/news-release-details/apache-corporation-announces-significant-oil-discovery-offshore/):

Sapakara West-1 was drilled to a depth of approximately 6,300 meters (20,700 feet), and successfully tested for the presence of hydrocarbons in multiple stacked targets in the upper Cretaceous-aged Campanian and Santonian intervals.

Preliminary fluid samples and test results indicate at least 79 meters (259 feet) of net oil and gas condensate pay (35-45 API oil gravities range) in two intervals.

The shallower Campanian interval contains 13 meters (43 feet) of net gas condensate and 30 meters (98 feet) of net oil pay, with API oil gravities between 35 and 40 degrees.

The deeper Santonian interval contains 36 meters (118 feet) of net oil-bearing reservoir with API oil gravities between 40 and 45 degrees.

Development of Maka and Sapakara discoveries ?

My prognosis is that 2 discoveries could probably be developed, such as with a high capacity FPSO and a production of some 150,000 b/d.

If also Kwaskwasi results to be a similar, significant discovery (what I expect) ? These 3 could be connected to just one FPSO with a production of some 225,000 b/d. Somewhere in 2027.

Block 58 is part of the east side of, what I call and name the “ Golden Lane of Guiana-Suriname Basin “.

Sapakara West 1 Location map:

Sapakara West 1
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Sapakara West 1

Block 58 and bordering area presents a very similar
hydrocarbon habitat, with strong discovery-prone fundamentals, just as the previous major/giant Guyana discoveries.

ExxonMobil reserves 3/2020
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ExxonMobil reserves 3/2020

Critical geological exploration & discovery success factors, in my humble opinion, till now are:

1) Fan systems in the “ deeper, third “ terrace or Cretaceous (deep) offshore area.
North of Cretaceous continental / basin margin.

Lisa giant discovery ?

Well-developed basin floor fan deposystem. Maastrichtian in age, Late Cretaceous.

2) Located above and/or close to the prolific mature/late mature Canje source rock kitchen.
With short and minimal migration problems.

Liza habitat giant fields GSB
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Liza and habitat of other giant fields in GSB -Basinfloor fans in “ Upper Cretaceous offshore area “; Reference eco.com, sept. 2018

Canje source rock is similar and time-equivalent (” family “) to famous Venezuelan, La Luna & Querecual source rocks.

Note on the seismic section that the thickness of the Cenomanian source rock is not constant. But varies considerably, consequently also with strong variability in the amount of source rock available for petroleum generation.

The latters have generated some 300 billion barrels of proven reserves.
Some 100 billion bbls in Maracaibo Basin, some 200 billion in Orinoco Heavy Oil Belt (Ref. e.g. my own publications on these, also on this website).

3) Application of ExxonMobil proprietary full wave seismic inversion technology. Permitted discovery of 5 largest fields (Tilapia, Haimara, Yellowtail, Tripletail, Mako). Raised success rate to 90% in offshore Guyana.

My own geo-mindbreakers, have never seen any published data (yet) on this ?

Kitchens GSB - Repsol
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Kitchens GSB – Repsol – Reference: eco.com, sept 2018

a) How many billion barrels of petroleum were generated in Guiana-Suriname Basin, (just) from Canje source rock ?

…Major oil and gas generation from kerogen occurs between 120 and 150°C in the subsurface…

…gas generation continues to temperatures ⪢ 160°C

b) How many km2 area does Canje cover?

c) How thick is Canje source rock (on average) ?

d) How much TOC content, on average ?

d) What is the volume in km3 of Canje source rocks ?

e) What is the total generation potential of 1 m3 Canje source rock, based on geochemical lab results ?

…> 5 kgt−1 of rock and average organic carbon contents > 1.5% expel 60–90% of the total oil generated.

f) What is the generation potential during the successive maturation stages (early, middle, late stages).


The richness calculated to be between 9 – 41 MMboe/km 2, for similar La Luna / Villeta S.R..

For example, in Norean-1 well, La Luna is 546 m thick with an average TOC value of 3.14 wt%; the Hydrogen Index (HI) is close to 302 mgHC/gTOC, and the S2 ranges from 5 to 27 mg/gRock

HC Generated La Luna SR
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HC Generated La Luna SR

Ref.  A Regional Overview of the La Luna Formation and the Villeta Group as Shale Gas/Shale Oil in the Catatumbo, Magdalena Valley and Eastern Cordillera Regions, Colombia* Ricardo Veiga1 and Francisco Dzelalija1
Search and Discovery Article #10565 (2014) Posted January 20, 2014
*Adapted from extended abstract prepared for oral presentation at AAPG International Conference & Exhibition, Cartagena, Colombia, September 8-11, 2013).

g) Where are the different area maps of the successive maturity phases ?

h) Reason?  

We (dr. Suhas Talukdar, former colleague and myself) did this same important and indispensable excercise for Maracaibo Basin, in 1984.
As part of ” Generation and migration of hydrocarbons in the Maracaibo basin, Venezuela: An integrated basin study “.
Under stewardship of prof. dr. John M. Hunt and prof. dr. Parke Dickey.

i) Etc. etc.etc., enough for a whole congress on source rocks…to get an idea on how much to expect…

3) deep basin floor fans are rather flat lying/low dip, with efficiënt top and side seals. Have a very wide areal extent with the largest reservoir / giant field potential.

Some references:

1) Previous posts on GS basin on my website

2) GeoArt post: painting, my own prognosis in 2008 on Discovery Play types (already long before Guiana-Suriname Golden Lane discovery):

Liza giant discovery, basinfloor and related fan systems.
Presented at successful Art exposition april 2010 at Consulate of Venezuela, Paramaribo, Suriname.

This painting has been solicited and elected for the frontpage of the book titled “ Guyana’s Oil Odyssey, 1750-2019 “ published by the University of Guyana.

3) M.Sc. thesis (2009) on “ Deep Water Turbidites and Fan Systems in Guiana-Suriname Basin – Future Hydrocarbon Potential “.
Based on offshore seismic, wells, field analogs, experimental lab results & insights obtained at University Utrecht, company reports etc.
Thesis including Block 58 and surrounding area.
By one of my Dutch students, I designed the project and was his thesis steward and supervisor.

4) Offshore Suriname, A New Outlook.
Based on my own re-evaluation.

Play fairways, play types, prospective zones, leads, prospects, source rocks and kitchens, areas available for IOC licensing.
Presented dec. 2009, Trinidad, Port of Spain, Caribbean Energy Conference.

5) Etc. etc. etc.

Maka Central 1 First discovery
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Maka Central 1 First discovery


Apache Map
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Apache map

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