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Slokkert Consultancy develops the ezValidator unfaulting and unfolding software for use in the geological evaluation of oil and gas fields.


The ezValidator software can help you to validate interpretation of simple and complex geological structures. Early on in an interpretation it assists you to get the correlation across faulted structures right. Later on it gives you a view of the detailed stratigraphic variation across the unbroken flat-lying sediments in their origial depositional setting.

The software can handle complex fault patterns such as branching and crossing faults, and it creates gaps at angular unconformities.

The ezValidator software is released in Landmark’s DecisionSpace® Geosciences software environment. The software is interactive, intuitive and very fast. It can be used by mainstream seismic interpreters (expert structural-geological knowledge is not required).

Slokkert Consultancy provides an unfaulting/unfolding service to oil and gas E&P companies. This can be based on screen dumps of sections or on projects stored in an OpenWorks database. This service is free for the first section in a new area.

Other examples for this website are greatly appreciated (outcrop photos, seismic).

ezValidator Arches National Park Utah originalezValidator Arches National Park Utah unfaultedezValidator Arches National Park Utah unfaulted unfolded

Outcrop at entrance of Arches National Park, Utah

Foot wall of the Moab fault

 (photograph Kees Rutten)


Unfaulted & unfolded

AAPG Explorer Geophysical Corner Article April 2010
Halliburton/Landmark DecisionSpace®



Slokkert Consultancy

Dr. Kees W. Rutten

Rolde, The Netherlands

Phone: +31-592-242452



ezValidator on Champion Field

Unravelling a horrendously complex structure with many crossing faults and unconformities.