How to be predictive with low net-to-gross reservoirsa Triassic case study

  1. Luis Miguel Yeste 1
  2. Augusto Nicolás Varela 2
  3. Neil McDougall 3
  4. Fernando García-García 1
  5. Javier Jaímez 4
  6. César Viseras 1
  1. 1 ), Dept. of Stratigraphy and Palaeontology, University of Granada
  2. 2 Centro de Investigaciones Geológicas, Universidad Nacional de La Plata-CONICET, Argentina
  3. 3 Consultant Sedimentologist & Stratigrapher, Madrid
  4. 4 . Centro de Instrumentación Científica. Campus de Fuentenueva. University of Granada
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Revista:
Geogaceta

ISSN: 0213-683X

Año de publicación: 2020

Número: 67

Páginas: 39-42

Tipo: Artículo

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Otras publicaciones en: Geogaceta

Resumen

The ability to be predictive in exploratory geology (hydrocarbon prospecting or hydrogeology) is very important when dealing with a highly heterogeneous reservoir rock and with a low net-to-gross ratio. A Triassic example is presented in the succession informally known as TIBEM (south central Spain) corresponding to a very distal fluvial flood plain that is studied in outcrop and in cores and well logs of wells made behind the outcrop (OBO characterization, Outcrop / Behind Outcrop). It is shown that there are characteristic patterns of 1D data from gamma ray and distribution of tadpoles acquired in wells that allow as to accurately locate the well within the detail sedimentary model of the ancient floodplain. In this way, from the 1D data, inferences can be made about the 3D disposition of the sands-tone sedimentary bodies corresponding to the channel and the cre-vasse-splay lobes, as well as the interconnectivity between these and their potential permeability barriers and baffles. The usefulness of this workflow when it comes to making robust models is evident.

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Información de financiación

The quality of the manuscript has improved significantly in response to the comments of Dr. J.M. Soria, another anonymous reviewer and the editor (Dr. D?az). Funding was provided by the research project CGL2017-89618-R (AEI/ FEDER, UE), the RNM369 Research Group (PAI) and by the Repsol-University of Granada agreement. The authors are indebted to the Consejer?a de Agricultura of Castilla-La Mancha (JCCM), the city hall of Alcaraz and Luis Fern?ndez and Mar?a Alcazar (landowners) for the drilling licenses. The authors also thank REPSOL EXPLORACION, CEPSA E.P. and CRIMIDESA Mining Co. for their support.

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Fuente de los datos: Dialnet