3-D geometric description of fractured reservoirs

Gringarten, Emmanuel

doi:10.1007/bf02066006

Cited by 22 publications

(9 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In such cases, drilling boreholes need to be oriented accordingly to intersect the fractures to raise production efficiency [23]. DFN model facilitates accurate simulation of reservoir fluid flow and production [9]. Moreover, in geothermal reservoirs where fractures are not well connected or have low permeability, some permeability enhancement techniques such as hydraulic fracture stimulation are essential.…”

Section: Discrete Fracture Network Inversionmentioning

confidence: 99%

Simulated annealing technique in discrete fracture network inversion: optimizing the optimization

Tran

2007

Comput Geosci

View full text Add to dashboard Cite

Simulated annealing (SA) has the capacity to handle complex problem of fracture heterogeneity. However, its applications to characterization and modeling of an actual discrete fracture network are limited. Borrowing the context of geothermal reservoirs (where extensive discrete fractures exist), this paper attempts to solve several key practical issues that persist in current models: objective function's (OF's) formulation, modification scheme, and stop criteria. The improvements are examined in a case study on an actual fracture outcrop, where results are compared with a current and advanced SA work.

show abstract

Section: Discrete Fracture Network Inversionmentioning

confidence: 99%

Simulated annealing technique in discrete fracture network inversion: optimizing the optimization

Tran

2007

Comput Geosci

View full text Add to dashboard Cite

show abstract

“…This led to new 'propagating fracture' models (Gringarten, 1996(Gringarten, , 1998 whereby fractures are created as seeds in a pixel environment and grown according to constraints on density, orientation and length. Stopping criteria are included such that fractures stop growing when they encounter another fracture.…”

Section: Fracture Networkmentioning

confidence: 99%

Carbon dioxide storage risk assessment: Analysis of caprock fracture network connectivity

Smith

Durucan

Korre

et al. 2011

International Journal of Greenhouse Gas Control

View full text Add to dashboard Cite

“…In the case of fault, models of transient hydrodynamic behaviour during pumping are now well established (Anderson, 2006;Dewandel et al, 2014Dewandel et al, , 2011Rafini and Larocque, 2012;Roques et al, 2014). It involves two main phases: (i) an early stage where water is mainly coming from storage in the fault and (ii) due to the limited storativity of this structure, a second stage during which adjacent reservoirs contribute to the flow by leakage (Escobar and Hernández, 2010;Gringarten, 1996;Moench, 1984;Rafini and Larocque, 2009;Roques et al, 2014;Tiab, 2005). These transient hydrodynamic specificities imply some temporal exchange and mixing between reservoirs during pumping that may be associated with geochemical changes.…”

Section: Introductionmentioning

confidence: 99%

Groundwater sources and geochemical processes in a crystalline fault aquifer

Roques

Aquilina

Bour

et al. 2014

Journal of Hydrology

View full text Add to dashboard Cite

International audienceThe origin of water flowing in faults and fractures at great depth is poorly known in crystalline media.This paper describes a field study designed to characterize the geochemical compartmentalization of adeep aquifer system constituted by a graben structure where a permeable fault zone was identified. Analysesof the major chemical elements, trace elements, dissolved gases and stable water isotopes reveal theorigin of dissolved components for each permeable domain and provide information on various watersources involved during different seasonal regimes. The geochemical response induced by performinga pumping test in the fault-zone is examined, in order to quantify mixing processes and contributionof different permeable domains to the flow. Reactive processes enhanced by the pumped fluxes are alsoidentified and discussed.The fault zone presents different geochemical responses related to changes in hydraulic regime. Theyare interpreted as different water sources related to various permeable structures within the aquifer.During the low water regime, results suggest mixing of recent water with a clear contribution of olderwater of inter-glacial origin (recharge temperature around 7 C), suggesting the involvement of watertrapped in a local low-permeability matrix domain or the contribution of large scale circulation loops.During the high water level period, due to inversion of the hydraulic gradient between the major permeablefault zone and its surrounding domains, modern water predominantly flows down to the deep bedrockand ensures recharge at a local scale within the graben.Pumping in a permeable fault zone induces hydraulic connections with storage-reservoirs. The overlaidregolith domain ensures part of the flow rate for long term pumping (around 20% in the present case).During late-time pumping, orthogonal fluxes coming from the fractured domains surrounding the majorfault zone are dominant. Storage in the connected fracture network within the graben structure mainlyensures the main part of the flow rate (80% in the present case). Reactive processes are induced by mixingof water from different sources and transfer conditions. A specific approach is applied to quantify thereaction rate involved along the pumping time. Autotrophic denitrification coupled with iron mineralsoxidation is highlighted and water rock interaction is clearly enhanced by the flux changes induced bypumping

show abstract

3-D geometric description of fractured reservoirs

Cited by 22 publications

References 7 publications

Simulated annealing technique in discrete fracture network inversion: optimizing the optimization

Simulated annealing technique in discrete fracture network inversion: optimizing the optimization

Carbon dioxide storage risk assessment: Analysis of caprock fracture network connectivity

Groundwater sources and geochemical processes in a crystalline fault aquifer

Contact Info

Product

Resources

About