Subsurface noise #6
REDEVELOPING AN OIL FIELD WITHOUT DRILLING A NEW WELL During a lunchtime talk in Aberdeen in October, Curtis Bracher from NEO Next presented on the Affleck field redevelopment in the Read More

This issue is about synclines. At least, that’s what a few articles have in common, one of which is the cover story. Oil and gas has long been found in synclines, and thanks to the concept of stratigraphic trapping and increased seismic resolution, it is now possible to look for hydrocarbons more extensively in areas outside the classic four-way closures. That’s what seems to happen in Kuwait at the moment, where recent discoveries in the offshore seem to have sparked interest in an area that was traditionally seen as less attractive compared to the structural culminations where most oil and gas fields were found. The same is happening in Uzbekistan, where a deep well is currently being drilled targeting a synclinal structure. And finally, the Jafurah unconventional gas project in Saudi Arabia is the climax of all this, with a reported 10,000 wells drilled into the source rock of the Ghawar field. In other words, please digest this magazine, and experience the breadth of topics covered.
FIRSTS
8 – Subsurface noise
10 – Energy matters – by Rodney Garrard
11 – Regional update – by Ian Cross
12 – Striking gas – KOC continues its exploration success in what could be described as a syncline
INSIGHTS
90 – A Geologist Ruins Everything – The absurdity of security… or… comfortable being uncomfortable – by Juan Cottier
91 – Reservoir models – Producing more by producing less
92 – HotSpot – Offshore Otway Basin drilling campaign – by NVentures
94 – Use your brines – When your oil reservoir turns out to be a lithium deposit – by István Nagy-Korodi
95 – Petroleum Systems – How structural setting and hydrocarbon phase are closely related – by Lukasz Krawczynski and Martin Neumaier
96 – What do air hockey and induced seismicity have in common? – by Molly Turko
98 – The Grand Canyon of the Middle East – by Joe Versfelt
100 – Vertical Geology – Going deeper for salt mining
COVER STORY
14 – An unconventional unconventional gas project
EXPLORATION OPPORTUNITIES
20 – Sweetness and light in Oman’s Indian Ocean – Searcher
34 – Proper sampling of near-surface geologic complexity illuminates tight oil reservoirs in the Permian Basin – Stryde
50 – Cameroon: Unlocking potential and reigniting exploration – Viridien
84 – From cuttings to clarity: AI unlocking the Norwegian Continental Shelf – Earth Science Analytics and Rockwash Geodata
OIL & GAS
26 – When perforating below the Free Water level makes sense
27 – Drilling deeper for new resources in Uzbekistan
28 – Karabash – West Siberia’s new frontier? – by Dominic Lewenz
29 – Renaissance ramps up exploration activity in Nigeria
30 – Open for business, again
31 – Will Greenland be the next oil hotspot?
32 – Understanding the “Minimum Economic Field Size” concept and aggregating targets
32 – “The day I cut an 88 ft core of top seal”
FEATURES
40 – Looking for a low-risk infill well? You might want to consider areas of weak 4D response
41 – US Permian Basin – the largest injection experiment
45 – Predicting viscosity in an undrilled panel of a deep-water field in West Africa – by Thierry Rives, Yulia Kedzierski and Honggang Zhou, Totalenergies
48 – Escaping the relentless cycle of re-orgs
PORTRAITS
56 – When geology just happens, and you happen to be quite good at it, Zhiyong He
GEOTHERMAL ENERGY
62 – Where the earth yawns – by Susan Fellows
63 – Denmark to embark on an innovative geothermal drilling project – by Louise Broen Larsen, Mads Sylvest Eegholm, Nikolaj Holmer Nissen, Camille Hanna And Kim Gunn Maver
64 – Layer cake geology and a lack of grid access
SUBSURFACE STORAGE
66 – Progress over perfection Equinor’s renewables – by Ronny Setså
67 – Being smart with data
68 – Are the problems around the Gorgon CO2 storage project proof that CCS does not work?
DEEP SEA MINERALS
70 – American Samoa offshore minerals planning advances – by Ronny Setså
71 – Deep-sea mud trial extraction to begin in 2026 – by Ronny Setså
72 – A greenprint for Norwegian sulphide exploration – by Ronny Setså
73 – A licence to operate – by Ingvild Ryggen Carstens
NEW GAS
76 – A “monumental deposit” or an attempt to revive coal-seam gas exploitation? – by Arnout Everts
77 – The Koloma enigma – by Mariël Reitsma
78 – France’s first stimulated natural hydrogen project – by Mariël Reitsma
TECHNOLOGY
80 – Finding big fields by detecting the smallest element
81 – It’s time to introduce chromostratigraphy
82 – From scattered campfires to integrated cities: The future of energy software – by Dan Austin