Quantification of Uncertainties of Fracture Permeability via Mud Loss Information and Inverse Stochastic Modeling
June 2019, 81st EAGE Annual Conference and Exhibition, London, UK
Alberto Guadagnini, Anna Russian, Monica Riva, Politecnico di Milano, Eliana Russo, Mario Chiaramonte,
GeoTech
Fracture characterization of NFRs plays an important role in hydrocarbon production estimation. Uncertainty propagation from input parameters to model outputs is quantified through a Monte Carlo framework. Stochastic inverse modelling with field data is performed to evaluate posterior probability densities of fracture aperture and to simulate drilling fluid invasion in fractures in quasi-real time during drilling.
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geolog@geolog.it
High Resolution Geochemistry at Well Site, a New Emerging Tool
March 2019, AAPG Hedberg: The Evolution of Petroleum Systems Analysis: Changing of the Guard from Late Mature Experts to Peak Generating Staff, Houston, USA
Mario Chiaramonte, Roberto Galimberti,
GeoTech
The recent impressive improvements in analytical chemistry, due on one side to the growing needs of environmental monitoring and on the other to fast developments in nanotechnologies, made possible to move part of geochemical lab activities to wellsite. New portable and more robust instruments, able treplace bulky and complex instruments used in the labs, have been adopted in mud logging units, to introduce geochemistry at well site. This trend is still ongoing and other analytical techniques will be moved soon, offering new opportunities to get in quasi-real time additional high value data, matching lab quality standards.
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geolog@geolog.it
H2S detection while drilling: a new approach
March 2019, 14th Offshore Mediterranean Conference and Exhibition, Ravenna, Italy
Luca Mascheroni,
GeoTech
Oil and gas reserve contamination by acid gas is a growing issue and H2S occurrence is more and more frequent. The use of organic scavengers in drilling mud prevents the application of techniques routinely used for H2S detection. Geolog has set up an innovative methodology to highlight H2S distribution in reservoir, even in presence of these scavengers.
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geolog@geolog.it
Carbon Isotopes from Mud Gas: Lab IRMS or Wellsite Laser-Assisted Technologies?
September 2019, 29th International Meeting on Organic Geochemistry (IMOG), Gothenburg, Sweden
Bianca Cecconi and Roberto Galimberti,
GeoTech
The objective of the study is to screen differences in carbon isotopic analysis between laboratory GC-IRMS and one of the possible alternative solutions for wellsite deployment, Cavity Ring-Down Spectroscopy (CRDS). Comparison examined advantages and disadvantages of two approaches and technical performances in terms of LoD, precision and accuracy.
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geolog@geolog.it
