| Title: |
NMR contribution in sub-horizontal well for porosity-permeability heterogeneity characterization in limestones: implications for 3D reservoir prediction and flow simulation in a world class geothermal aquifer |
| Authors: |
Catinat, Maxime; Brigaud, Benjamin; Fleury, Marc; Antics, Miklos; Ungemach, Pierre; Davaux, Mélanie; Gasser Dorado, Julien; Thomas, Hadrien; Thomas Florent Essou, Codjo; Andrieu, Simon; Mouche, Emmanuel |
| Contributors: |
Géosciences Paris Saclay (GEOPS); Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS); GEOFLUID; IFP Energies nouvelles (IFPEN); Bureau de Recherches Géologiques et Minières (BRGM); Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE); Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA); Modélisation Hydrologique (HYDRO); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)); Cergy Paris Université; Université de Neuchâtel; ANR-19-CE05-0032,UPGEO,Changement d'échelle et simulation des flux de chaleur pour amélioer l'efficacité des systèmes géothermiques profonds(2019) |
| Source: |
12th European Geothermal PhD Days; https://hal.science/hal-05294969; 12th European Geothermal PhD Days, Cergy Paris Université; Université de Neuchâtel, Feb 2021, (Visioconférence), France |
| Publisher Information: |
CCSD |
| Publication Year: |
2021 |
| Collection: |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
| Subject Terms: |
Flow simulation; Carbonate; Modeling; Paris Basin; NMR; [SDU]Sciences of the Universe [physics] |
| Subject Geographic: |
France |
| Time: |
(Visioconférence), France |
| Description: |
International audience ; With around 50 heating networks today operating, the aera around Paris is the European region which concentrates the most heating network production units in terms of deep geothermal energy. In France, the energy-climate strategy plans to produce 6.4TWh in 2023, compared to 1.5TWh produced in 2016 [1]. Despite an exceptional geothermal potential, the current average development rate of 70MWh/year will not allow this objective to be achieved, it would be necessary to reach a rate of 6 to 10 times higher. The optimization of the use of deep geothermal energy is a major challenge for France, and in Ile-de-France, which has a population of nearly 12 million inhabitants. This project aims to reconstruct and simulate heat flows in the Paris Basin using an innovative methodology (1) to characterize, predict and model the properties of reservoirs (facies, porosity, permeability) and ( 2) simulate future circulations and predict the performance at a given location (sedimentary basin) on its geothermal potential. This study focuses on a high density area of well infrastructures around Cachan, (8 doublets, 1 triplet in 56 km 2 ). A new sub-horizontal doublet concept has been recently (2017) drilled at Cachan to enhance heat exchange in medium to low permeability formations [2]. Nuclear Magnetic Resonance (NMR T2) logs have been recorded in the sub-horizontal well (GCAH2) providing information on pore size distribution and permeability. We integrated all logging data (gamma ray, density, resistivity, sonic, NRM T2) of the 19 wells in the area and 120 thin section observations from cuttings to derive a combined electrofacies-sedimentary facies description. A total of 10 facies is grouped into 5 facies associations coded in all the 19 wells according to depths and 10 3rd order stratigraphic sequences are recognized. The cell size of the 3D grid was set to 50 m x 50 m for the XY dimensions. The Z-size depends on the thickness of the sub-zones, averaging 5 m. The resulting 3D grid is composed of a total ... |
| Document Type: |
conference object |
| Language: |
English |
| Availability: |
https://hal.science/hal-05294969 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.4F257271 |
| Database: |
BASE |