Wellbore Models GWELL, GWNACL, and HOLA User's Guide

Aunzo, Z.; Björnsson, Grímur; Bodvarsson, G.S.

doi:10.2172/937440

Cited by 13 publications

(8 citation statements)

References 12 publications

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“…After this come NG sets of NH flowing bottomhole pressure data in -77 -format 8E10.4. The data in Table 6 were generated with the HOLA wellbore simulator (Aunzo et al, 1991) for a 0.2 m (≈ 8 inch) inside diameter well of 1,000 m feed zone depth with 7 bars wellhead pressure.…”

Section: Genermentioning

confidence: 99%

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TOUGH3 User’s Guide, Version 1.0

Jung¹,

Pau²,

Finsterle³

et al. 2018

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Section: Genermentioning

confidence: 99%

“…This was done to avoid rates going out of table range during Newton-Raphson iteration in a TOUGH3 flow simulation. Aunzo et al, 1991).…”

Section: Genermentioning

confidence: 99%

TOUGH3 User’s Guide, Version 1.0

Jung¹,

Pau²,

Finsterle³

et al. 2018

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“…In both cases, using an explicit computation of the hydrostatic pressure drop, the well model can be reduced to a single equation and a single implicit unknown corresponding to the well reference pressure P ω (see e.g. [6]).…”

Section: Well Modelmentioning

confidence: 99%

Parallel Geothermal Numerical Model with Fractures and Multi-Branch Wells

Beaude

Beltzung

Brenner³

et al. 2018

ESAIM: ProcS

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To answer the need for an efficient and robust geothermal simulation tool going beyond existing code capabilities in terms of geological and physical complexity, we have started to develop a parallel geothermal simulator based on unstructured meshes. The model takes into account complex geology including fault and fracture networks acting as major heat and mass transfer corridors and complex physics coupling the mass and energy conservations to the thermodynamic equilibrium between the gas and liquid phases. The objective of this Cemracs project was to focus on well modeling which is a key missing ingredient in our current simulator in order to perform realistic geothermal studies both in terms of monitoring and in terms of history matching. The well is discretized by a set of edges of the mesh in order to represent efficiently slanted or multi-branch wells on unstructured meshes. The connection with the 3D matrix and the 2D fracture network at each node of the well is accounted for using Peaceman’s approach. The non-isothermal flow model inside the well is based on the usual single unknown approach assuming the hydrostatic and thermodynamical equilibrium inside the well. The parallelization of the well model is implemented in such a way that the assembly of the Jacobian at each Newton step and the computation of the pressure drops inside the well can be done locally on each process without MPI communications.

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“…INL researchers obtained permission to interface those geophysical models with their existing reservoir model and TETRAD. 150 They initially developed TETRAD code modifications-including geophysics output and new keywords for defining rock types on a regional basis-with test cases using direct current (DC) resistivity, self potential, and microgravity models.…”

Section: Reservoi R E N G I N E E R I N G Updates To Tetrad Reservoirmentioning

confidence: 99%

“…[147][148][149] In a few cases, reservoir and wellbore models were run interactively to more realistically simulate the interaction between underground and surface conditions. 150…”

Section: Wellbore Modelsmentioning

confidence: 99%