Applying improved analytical methods for modelling flood displacement fronts in bounded reservoirs (Quitman field, east Texas)

Nelson, Rhodri; Zuo, Lihua; Weijermars, Ruud; Crowdy, Darren

doi:10.1016/j.petrol.2018.03.006

Cited by 12 publications

(15 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The source and sink flows are characterized by a positive and a negative value of the strength m(t), respectively. Strength m(t), for a well with productivity of q(t) (m 3 •s −1 ) with a reservoir height of h (m), and reservoir porosity n, is:…”

Section: Brief Overview Of Cam Methodology and Algorithmsmentioning

confidence: 99%

“…A CAM model for the Quitman field has been presented in detail in a companion study [3]. The study revisited a classical waterflood simulation for an East Texas oil field [20].…”

Section: Case A-sweep Patterns and Water Cut Ratiosmentioning

confidence: 99%

“…The Eulerian particle tracking method was first combined with CAM models by Weijermars [1]. The code was subsequently expanded to model the time of flight and sweep patterns 2 of 19 in hydrocarbon reservoirs with vertical injection and producer wells, first in unbounded reservoirs [2], and then was adapted for fault-bounded reservoirs [3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fast Models of Hydrocarbon Migration Paths and Pressure Depletion Based on Complex Analysis Methods (CAM): Mini-Review and Verification

Weijermars

Khanal

Zuo

2020

Fluids

Self Cite

View full text Add to dashboard Cite

A recently developed code to model hydrocarbon migration and convective time of flight makes use of complex analysis methods (CAM) paired with Eulerian particle tracking. Because the method uses new algorithms that are uniquely developed by our research group, validation of the fast CAM solutions with independent methods is merited. Particle path solutions were compared with independent solutions methods (Eclipse). These prior and new benchmarks are briefly summarized here to further verify the results obtained with CAM codes. Pressure field solutions based on CAM are compared with independent embedded discrete fracture method (EDFM) solutions. The CAM method is particularly attractive because its grid-less nature offers fast computation times and unlimited resolution. The method is particularly well suited for solving a variety of practical field development problems. Examples are given for fast optimization of waterflood patterns. Another successful application area is the modeling of fluid withdrawal patterns in hydraulically fractured wells. Because no gridding is required, the CAM model can compute the evolution of the drained rock volume (DRV) for an unlimited (but finite) number of both hydraulic and natural fractures. Such computations of the DRV are based on the convective time of flight and show the fluid withdrawal zone in the reservoir. In contrast, pressure depletion models are based on the diffusive time of flight. In ultra-low permeability reservoirs, the pressure depletion zones do not correspond to the DRV, because the convective and diffusive displacement rates differ over an order of magnitude (diffusive time of flight being the fastest). Therefore, pressure depletion models vastly overestimate the drained volume in shale reservoirs, which is why fracture and well spacing decisions should be based on both pressure depletion and DRV models, not pressure only.

show abstract

Section: Brief Overview Of Cam Methodology and Algorithmsmentioning

confidence: 99%

“…A CAM model for the Quitman field has been presented in detail in a companion study [3]. The study revisited a classical waterflood simulation for an East Texas oil field [20].…”

Section: Case A-sweep Patterns and Water Cut Ratiosmentioning

confidence: 99%

See 1 more Smart Citation

Fast Models of Hydrocarbon Migration Paths and Pressure Depletion Based on Complex Analysis Methods (CAM): Mini-Review and Verification

Weijermars

Khanal

Zuo

2020

Fluids

Self Cite

View full text Add to dashboard Cite

show abstract

“…The closed-form solution is commonly used to map curvilinear line-integrals to identify streamlines [77,78]. Our novel approach using complex analysis methods has been applied to fluid flooding and sweeping of hydrocarbon reservoirs with finite boundaries [6] and infinite boundaries [79,80]. Investigations of how hydraulic fractures drain the matrix in shale reservoirs are also possible using our method for streamline simulation and fluid time-of-flight tracing based on complex analysis methods.…”

Section: Methodsmentioning

confidence: 99%

“…We developed a grid-less and meshless model tool based on Complex Analysis Methods (CAM), which allows rapid visualization of flow attributes around individual hydraulic fractures, using: (1) pressure field contour plots, (2) velocity field contour plots, (3) streamlines, and (4) drainage contours. The accuracy of the CAM tool has been benchmarked against independent reservoir simulators, which showed no discernable difference in results [6][7][8], except for the higher resolution of the CAM results. The method is suitable for modeling the drainage pattern near multiple hydraulic fractures and natural fractures.…”

Section: Introductionmentioning

confidence: 99%

Shale Reservoir Drainage Visualized for a Wolfcamp Well (Midland Basin, West Texas, USA)

Weijermars¹,

Harmelen²

2018

Energies

Self Cite

View full text Add to dashboard Cite

Closed-form solution-methods were applied to visualize the flow near hydraulic fractures at high resolution. The results reveal that most fluid moves into the tips of the fractures. Stranded oil may occur between the fractures in stagnant flow zones (dead zones), which remain outside the drainage reach of the hydraulic main fractures, over the economic life of the typical well (30-40 years). Highly conductive micro-cracks would further improve recovery factors. The visualization of flow near hypothetical micro-cracks normal to the main fractures in a Wolfcamp well shows such micro-cracks support the recovery of hydrocarbons from deeper in the matrix, but still leave matrix portions un-drained with the concurrent fracture spacing of 60 ft (~18 m). Our study also suggests that the traditional way of studying reservoir depletion by mainly looking at pressure plots should, for hydraulically fractured shale reservoirs, be complemented with high resolution plots of the drainage pattern based on time integration of the velocity field.

show abstract

Displacement field potentials for deformation in elastic Media: Theory and application to pressure-loaded boreholes

Weijermars

Ettehad

2019

Applied Mathematics and Computation

View full text Add to dashboard Cite

Applying improved analytical methods for modelling flood displacement fronts in bounded reservoirs (Quitman field, east Texas)

Cited by 12 publications

References 41 publications

Fast Models of Hydrocarbon Migration Paths and Pressure Depletion Based on Complex Analysis Methods (CAM): Mini-Review and Verification

Fast Models of Hydrocarbon Migration Paths and Pressure Depletion Based on Complex Analysis Methods (CAM): Mini-Review and Verification

Shale Reservoir Drainage Visualized for a Wolfcamp Well (Midland Basin, West Texas, USA)

Displacement field potentials for deformation in elastic Media: Theory and application to pressure-loaded boreholes

Contact Info

Product

Resources

About