Coupled Completion and Reservoir Simulation Technology for Well Performance Optimization

Grubert, Marcel; Wan, Jing; Ghai, Sartaj Singh; Livescu, Silviu; Brown, William P.; Long, Ted

doi:10.3997/2214-4609-pdb.170.spe125251

Cited by 6 publications

(2 citation statements)

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“…In comparison with conventional completion methods, the application of Inflow Control Devices (ICDs) has been shown to markedly enhance the inflow profile of horizontal wells. These devices facilitate a balanced advancement of the water ridge front in the lower part of the reservoir, significantly extending the time to bottom water breakthrough, augmenting the cumulative oil production without water, and enabling horizontal wells to operate effectively under elevated production pressure differentials [1,2].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Oil Recovery Through Balanced Production Techniques in Horizontal Wells of Bohai A Oilfield

Xue,

Zheng,

Liu

et al. 2024

ATG

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In response to the prevalent high water cut challenge in horizontal wells of the Bohai A Oilfield, this study introduces an innovative approach for pinpointing water production points in horizontal wells. The methodology leverages a comprehensive evaluation that integrates techniques such as curve identification, dynamic analysis, numerical simulation, and seepage model calculations. In conjunction, a novel hydraulic control-based balanced oil production process has been developed. This process utilizes a specialized water plugging string to effectively seal water production points in horizontal wells. Additionally, a hydraulic control system for horizontal well oil production has been implemented, facilitating staged extraction and thus achieving balance in oil production. Field application, particularly in Well X1, demonstrates a marked improvement post-implementation: the comprehensive water cut in Well X1 decreased from an initial 98.1% to 87.3%, and the production pressure differential escalated from 0.55 MPa to 2.01 MPa. This substantial enhancement in reservoir utilization indicates a notable reduction in water cut within the crude oil. The application of this balanced production technology in horizontal wells has led to a decrease in water cut and liquid production, significantly alleviating surface processing pressures. Consequently, there has been an improvement in well productivity and the overall development effectiveness of the oilfield. These findings suggest that the balanced oil production technique offers a promising solution for enhancing oil recovery in horizontal wells, particularly in fields grappling with high water cuts.

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Section: Introductionmentioning

confidence: 99%

Enhanced Oil Recovery Through Balanced Production Techniques in Horizontal Wells of Bohai A Oilfield

Xue,

Zheng,

Liu

et al. 2024

ATG

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“…This imbalanced phenomenon could be further aggravated if the reservoir is strongly heterogeneous or fractures are developed. By generating an additional pressure loss, inflow-control devices (ICDs) facilitate inflow profile uniformity. − …”

Section: Introductionmentioning

confidence: 99%

Design and Performance of a Novel Autonomous Inflow Control Device

2017

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Due to geological complexity and the heel−toe effect, the production profiles of long horizontal wells are usually imbalanced, and as a result, premature water breakthrough is usually encountered. Once water breakthrough occurs, this phenomenon will reduce oil production. To maximize oil recovery, inflow-control devices (ICDs) are widely used to create a uniform inflow profile. To date, known ICDs cannot meet all the ideal requirements throughout the well's life. In this study, based on the combination of a successive restriction mechanism and water swelling rubber, a novel autonomous inflow control device is proposed. Then, the rules of oil−water two-phase flow through the novel design are studied by a numerical simulation based on optimized structural parameters, and the fluid property sensitivities are analyzed. Upon integration of the novel design into the test apparatus, flow tests are conducted. The influences of water content, inflow rate, and injection rate on the pressure drop are further analyzed to provide a guide to completion parameter optimization. The results demonstrate that the novel design has a simple structure. Its flow-resistance rating can be easily adjusted. Additionally, the design provides a significant oil and water resistance difference. The pressure-drop ratio of the water relative to oil can be up to 40. The design has a large crosssectional flow area, providing high plugging resistance and high erosion resistance. Moreover, the design is not sensitive to flow rate or oil properties and has a wide application range. Reservoir heterogeneity should be given more attention than the heel−toe effect when optimizing the completion parameters.

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Application of a Coupled Wellbore/Reservoir Simulator to Well Performance Optimization

et al. 2010

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Long-term completion performance is important for the economic development of any field. As fields are now developed in environments that are capital intensive and increasingly technically challenging, new technologies are required for optimization of the completion design. Stand-alone reservoir simulators lack the required detail on the completion side, while stand-alone wellbore simulators do not have the long-term reservoir performance information available. Even the new class of coupled wellbore/reservoir simulators often lack comprehensive completion design capabilities. We have developed a fully-coupled black-oil wellbore/reservoir model which accounts for the necessary details for an optimized completion design. Specifically, the model couples ExxonMobil's proprietary reservoir simulator and a detailed completion hydraulics simulator such that the reservoir flow, wellbore tubing and annulus flows, and pressure fields are simulated simultaneously. In this paper, we compare different synthetic cases involving open-holes, pre-drilled liners, packers, and inflow control devices that demonstrate unique completion opportunities captured by using our modeling capabilities. We show that our model provides not only detailed information regarding the tubing and annulus flow and the associated pressure drops along the completion, but also the impact of different completion types on short- and long-term reservoir recovery. Our results show the significance of this new coupled approach in its ability to relate the reservoir performance and the flow dynamics through various completion types.

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Coupled Completion and Reservoir Simulation Technology for Well Performance Optimization

Cited by 6 publications

References 0 publications

Enhanced Oil Recovery Through Balanced Production Techniques in Horizontal Wells of Bohai A Oilfield

Enhanced Oil Recovery Through Balanced Production Techniques in Horizontal Wells of Bohai A Oilfield

Design and Performance of a Novel Autonomous Inflow Control Device

Application of a Coupled Wellbore/Reservoir Simulator to Well Performance Optimization

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