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The global energy sector from a subsurface perspective

Worldwide

A new closed-loop horizontal geothermal well solution

Kim Gunn Maver - Green Therma
In Europe, deep geothermal heat production for district heating and to a lesser extent district cooling is mainly based on the conventional doublet geothermal well solution. Examples are the wells…

Salt and Grit

Henk Kombrink
“My fascination with geology started with asking myself a question”, says Clara Rodríguez Rondón. “I grew up in Venezuela, in a town called San Juan de Los Morros, in a…

Geomodelling for CCS, a bridge too far?

Raffik Lazar, Geomodl International
Traditionally, geomodels are built in a simplistic fashion, taking into account the inherent degree of uncertainty in the input data. Attempting to accurately depict an unseen geological object, often multiple…

The competitive world of coring

Henk Kombrink
Until wireline logging came into swing, cutting core was the most important way to obtain reliable information about the targeted formation. With the advance of wireline logging though, the need…

A dissolvable tool

Henk Kombrink
Andrew Garioch from Well-SENSE talks us through the use of fibre-optic technology for well intervention work

Can a seal fail?

David Rajmon
A seal is a rock that has a higher capillary entry pressure relative to other adjacent rocks. The higher the contrast, the greater the hydrocarbon column it can hold. The…

This is the time of subsurface by-products

Mariël Reitsma and Henk Kombrink
Speaking to an Aberdeen audience about 10 years ago, Jon Gluyas argued that the North Sea oil business was in essence a water industry. Looking at volumes of produced water…

Seismic velocity – A strong identifier of gas prospects

Martin Essenfeld - EGEP Consultores SA and Rafael Sandrea - IPC Petroleum Consultants
P-wave velocity (Vp) is an essential parameter for constructing seismic velocity models for geophysical exploration data, and porosity is the single most important factor affecting it, along with the type of…