In this section
@inproceedings{Salinas:2016,
author = {Salinas, P and Pavlidis, D and Xie, Z and Adam, A and Pain, C and Jackson, M},
publisher = {EAGE},
title = {Dynamic unstructured mesh adaptivity for improved simulation of nearwellbore flow in reservoir scale models},
url = {http://hdl.handle.net/10044/1/39771},
year = {2016}
}
TY - CPAPER
AB - It is well known that the pressure gradient into a production well increases with decreasing distanceto the well and may cause downwards coning of the gaswater interface, or upwards coning ofwateroil interface, into oil production wells; it can also cause downwards coning of the water table,or upwards coning of a saline interface, into water abstraction wells. To properly capture the localpressure drawdown into the well, and its effect on coning, requires high grid or mesh resolution innumerical models; moreover, the location of the well must be captured accurately. In conventionalsimulation models, the user must interact with the model to modify grid resolution around wells ofinterest, and the well location is approximated on a grid defined early in the modelling process.We report a new approach for improved simulation of nearwellbore flow in reservoirscale modelsthrough the use of dynamic unstructured adaptive meshing. The method is novel for two reasons.First, a fully unstructured tetrahedral mesh is used to discretize space, and the spatial location of thewell is specified via a line vector. Mesh nodes are placed along the line vector, so the geometry ofthe mesh conforms to the well trajectory. The well location is therefore accurately captured, and theapproach allows complex well trajectories and wells with many laterals to be modelled. Second,the mesh automatically adapts during a simulation to key solution fields of interest such as pressureand/or saturation, placing higher resolution where required to reduce an error metric based on theHessian of the field. This allows the local pressure drawdown and associated coning to be capturedwithout userdriven modification of the mesh. We demonstrate that the method has wideapplication in reservoirscale models of oil and gas fields, and regional models of groundwaterresources.
AU - Salinas,P
AU - Pavlidis,D
AU - Xie,Z
AU - Adam,A
AU - Pain,C
AU - Jackson,M
PB - EAGE
PY - 2016///
TI - Dynamic unstructured mesh adaptivity for improved simulation of nearwellbore flow in reservoir scale models
UR - http://hdl.handle.net/10044/1/39771
ER -