Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Huang, Hao; Burch, Damian; Brown, William P.; Yin, Jichao; Long, Ted

doi:10.2118/135119-ms

Cited by 3 publications

(4 citation statements)

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“…Numerical results demonstrated good accuracy of the proposed approach. The new approach may be used to provide fast and high resolution simulations for the near-well flow simulation in well performance studies [13]. Coupling of the new approach with geomechanics will lead to the solution of a wide range of important subsurface problems, such as hydraulic fracture and casing integrity analysis in complicated geological conditions [14,15].…”

Section: Discussionmentioning

confidence: 99%

“…The new modeling capability allows for detailed yet fast analysis of flows in near-well region and hence provides a means to quickly evaluate the well performance of various completion or stimulation options [13,17]. The new numerical method can also be coupled with geomechanics models and answer questions related to (1) the operability of wells drilled through complicated subsurface features or (2) the injectivity of a well in complicated geological conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Details of some of the aforementioned applications as well as the modeling of non-conduit subsurface features (such as interlaminar layers) have been presented in Refs. [13,14].…”

Section: Introductionmentioning

confidence: 99%

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On the use of enriched finite element method to model subsurface features in porous media flow problems

et al. 2011

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In this paper, a new enrichment scheme is proposed to model fractures and other conduits in porous media flow problems. Inserting this scheme into a partition of unity based method results in a new numerical method that does not require the mesh to honor the specific geometry of these subsurface features. The new scheme involves a specially designed integration procedure and enrichment functions, which can capture effects of local heterogeneity introduced by subsurface features on the pressure solution. The new method is also capable of modeling fractures with low as well as high conductivity. Another feature of the proposed scheme is that, even though two enrichment functions are used to model the permeability change at the two rock/fracture interfaces of a fracture, only one element partition is made for numerical integration. To demonstrate the accuracy and effectiveness of the proposed approach, production problems for wells that were stimulated or completed by longitudinal fracture, transverse fractures, and perforations are studied.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On the use of enriched finite element method to model subsurface features in porous media flow problems

et al. 2011

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“…Estes detalhes ocorrem em escalas que são muito pequenas em comparação com os elementos de malha dos simuladores de reservatórios típicos. Essas variáveis têm um grande impacto sobre a produtividade dos poços (Karimi, 2011;Chandra, 2011;Huang, 2010a;Byrne, 2009Byrne, , 2010Byrne, , 2011aZeboudj, 2010;Sun, 2011).…”

Section: Modelo Simplificado Para Oíndice Do Poçounclassified

Produtividade De Poços Em Reservatórios De Alta Heterogeneidade De Permeabilidade

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Dias, Rodrigo Araujo Cardoso; Nieckele, Angela Ourivio (Advisor); Fernandes, Paulo Dore (Co-Advisor). Wells Productivity in High Heterogeneity Reservoirs. Rio de Janeiro, 2017. 229p. Tese de Doutorado -Departamento de Engenharia Mecânica, Pontifícia Universidade Católica do Rio de Janeiro.Predicting wellbore production plays a crucial role in petroleum engineering. Therefore, the modeling of the flow in reservoir and in wellbore is fundamental in several problems in this area. In the overwhelming majority problems, Darcy's equation is the choice to predict the behavior of flow in reservoirs. The great success of Darcy's equation, unfortunately, took its application out of the scope of the problems for which it applies. The classic Darcy's equation presents limitations when applied in highly heterogeneous porous media, for example with cavities connected by fracture networks, with vugs and caves. Over the years, other models have been proposed and derived from other points of view to treat flow in porous media, for example through the average volume process or through mixture theory. The present work considers the average volume process in porous media. The developed model includes additional terms for the linear momentum equation that are relevant in several practical situations, and involves the joint solution of conservation equations. In the model developed in this work, the flow in the reservoir is solved coupled to the wellbore flow, considering the possibility of using different completion types. The pressure and velocity fields predictions as well as the productivity of oil wellbores using the developed model are compared with the predictions of the model based on the Darcy's equation. It is shown that for certain situations, especially in highly heterogeneous carbonate reservoirs, large differences can be obtained. The prediction of the productivity of a wellbore from the Darcy's equation can be significantly overestimated.

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Novel Mechanistic Modeling of Cased-Hole Fracpack (CHFP) Well Productivity with Non-Darcy Effects and Fracture-Plane Alignment

Angeles

Yin

Hecker

et al. 2015

Day 2 Wed, March 18, 2015

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Cased-hole fracpacks (CHFP) can deliver high-rate, low-skin completions by creating a highly conductive fracture that extends beyond the perforation tunnels, bypassing near wellbore damage and preventing formation sand production. While the industry has a long history of successful CHFP applications, well performance prediction for this type of completions has remained challenged by complex geometrical (fracture geometry and orientation with respect to arbitrarily deviated wellbores) and multi-physics factors (multiphase flow, turbulence). Most fracpack modeling tools are limited to analytical and simplified reservoir simulation models, which can lead to poor accuracy in quantifying near-wellbore effects, such as non-Darcy pressure drop, particularly important for high-rate gas wells. In this paper, we propose a new mechanistic approach to incorporate the cased-hole fracpack completion with non-Darcy flow through explicitly meshed perforation tunnels, fractures and rock formation in real dimensions. The fracture is modeled by Enriched Finite Element Method (EFEM), which flexibly accounts for arbitrary fracture geometry and orientation while enabling multi-physics effects, impact of perforation/gravel packing damage and perforation-fracture communication uncertainty on deviated well productivities. The proposed approach is validated using (1) analytical and numerical models, and (2) two Gulf of Mexico (GOM) CHFP wells, one vertical and one deviated; where skins measured from step-rate tests were history-matched to longitudinal and transverse fracture models. We also introduce the concept of fracture neighborhood width to account for perforation performance relative to its alignment with fracture opening and orientation. Finally, the new approach is used to predict the deliverability of a high-rate, high-pressure gas condensate well. Non-Darcy effects, condensate banking effects, perforation gravel packing, and geological model uncertainties are included in predicting the well production.

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Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Cited by 3 publications

References 15 publications

On the use of enriched finite element method to model subsurface features in porous media flow problems

On the use of enriched finite element method to model subsurface features in porous media flow problems

Produtividade De Poços Em Reservatórios De Alta Heterogeneidade De Permeabilidade

Novel Mechanistic Modeling of Cased-Hole Fracpack (CHFP) Well Productivity with Non-Darcy Effects and Fracture-Plane Alignment

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