Technical Presentation

When:  Nov 22, 2018 from 05:00 PM to 06:00 PM (CET)
Associated with  Vienna Basin Section

“New Frontiers in Petrophysics & Core Analysis for Advanced Reservoir Characterization and Geomechanics Studies Based on Continuous Data from Entire Cores.”

The presentation starts with a high level introduction on recent technology developments in petrophysics and geomechanics for an improved reservoir characterization based on the integrated analysis of logs and cores.

Main focus of the technical talk will be a unique first time case study on the analysis of fresh whole cores from a clastic reservoir, where several new high-resolution technologies were deployed for generating early comprehensive data as input for a new core analysis workflow.

Continuous profiles of petrophysical and geological properties were acquired with a multi-sensor scratch test bench, that include standard rock strength, acoustic properties (vp & vs), ultra-high resolution core imaging (2µm/px), laser topography and rock powder collection to rapidly discriminate petrophysical facies.

In a couple of days after barrel opening, these new non-damageable technologies produce in addition to a high resolution quantitative rock strength profile along the whole core , robust qualitative grain size distributions, porosity and permeability indexes at centimetre scale. These property profiles can be used to optimize the further conventional core analysis program (RCA/SCAL), but also to support early operational decisions regarding well completion design ( e.g. mitigation of sand production risks in low strength intervals).

The rock strength profiles were found to be well correlated to porosity, while the grain size index was related to the permeability, thus it was possible to generate an early quantification of the reservoir quality distribution along the core.

Additionally, UV pictures of the cores acquired in the groove left by the scratch test (which is a dry cut that prevents any fluid displacement) could be used to map precisely the presence of hydrocarbon along the whole core with no additional costs.

These combined new whole core analysis technologies are unique and designed to be rolled out anywhere in the world. They produce high quality information and reliable petrophysical and quantitative geological data just days after the opening of the core!

 

Christophe Germay is one of the founders and is the managing director of EPSLOG SA since its creation in 2005. Christophe’s current interests are high resolution mechanical logging, analytical core analysis, proxy modelling, up-scaling, facies recognition.  He holds a BSc. Degree in physics from the University of Liege, Belgium; a MSc Degree in Civil Engineering from the University of Minnesota and a joint PhD from the University of Liege and University of Minnesota.

Lutz Riepe is an advisor and director at EPSLOG SA after a 40 years international career in Petroleum Engineering for BEB ( Shell/Exxon Germany) and Shell (UK, Syria, Nigeria), and finally as Petrophysics Custodian for PETRONAS in Malaysia. He holds a MSc Degree in Physics and a PhD ( Dr. rer.nat.) in Petrophysics from Clausthal University Germany. He has settled in Austria to enjoy his retirement in the Weinviertel near Vienna.

Location

OMV Head Office: room Tripoli
Trabrennstrasse 6-8
Vienna, 1020
Austria