Closed-loop Feedback Control for Production Optimization of Intelligent Wells under Uncertainty

Dilib, Fahad Ahmed; Jackson, Matthew D.

doi:10.2118/150096-ms

Cited by 10 publications

(5 citation statements)

References 58 publications

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“…In reality, conventional waterflooding schemes may not suffice in increasing the yield of produced oil due to a poor sweep efficiency [7]. So, to account for oil productivity, a system involving reservoir management lifecycle called Closed-Loop Reservoir Management (CLRM) is developed to tackle this production shortcoming [8]. CLRM basically involves the application of real time data and mathematical models to propagate the long and short term decision making strategies for new and existing oil reservoirs [8], [9].…”

Section: Introductionmentioning

confidence: 99%

“…So, to account for oil productivity, a system involving reservoir management lifecycle called Closed-Loop Reservoir Management (CLRM) is developed to tackle this production shortcoming [8]. CLRM basically involves the application of real time data and mathematical models to propagate the long and short term decision making strategies for new and existing oil reservoirs [8], [9]. CLRM primarily consist of two workflows; the first is history matching which relies on historical data assimilation; the second is the optimization of control inputs which relies on some optimization algorithms (Fig.…”

Section: Introductionmentioning

confidence: 99%

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Untitled

2023

JESTR

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Waterflooding is the most common secondary recovery technique used in oil and gas industries today, owing to its cheap investment cost and easy implementation. However, major challenges are encountered in terms of oil sweep efficiency and breakthrough time which poses a risk to production and economic lifecycle of reservoirs. As a result, reservoir engineers are tasked with improvising optimal production strategies with the goal of maximizing profit. This review extensively describes some common optimization techniques reported in improving oil reservoir production. Also, their formulation, limitations and advantages with respect to production rates, oil well placement and control, inter-well connectivity and reservoir sweep efficiency were reviewed. While there are several optimization algorithms used in waterflooding, the emphasis in this work involves only the gradient and data driven optimizers since it is impossible to cover all optimization technique in a single review paper. Basically, no algorithm has been globally accepted as superior to the other since the sole aim is to improve productivity and economic profit, and each of these techniques has its unique practicability. However, when considering factors like design limitations, computational and economic cost, implementation timeframe, availability of data, some technique may suffice.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Untitled

2023

JESTR

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“…Several authors are of the opinion that there should be a shift of paradigm to an efficient utilization of production measurements where control strategies are implemented in a closed-loop fashion (Brouwer, Naevdal, Jansen, Vefring, & van Kruijsdijk, 2004;Dilib & Jackson, 2013;Foss & Jensen, 2011;Jansen, Brouwer, & van Kruijsdijk, 2005;Sarma, Aziz, & Durlofsky, 2005). This led to studies on methodologies for automatic model updating (data assimilation) integrated with optimization of production systems in a closed-loop.…”

Section: Introductionmentioning

confidence: 99%

“…Similar to other work, the efficacy of the designed closed-loop was evaluated by comparing its performance to an open-loop based solution. In the work of Dilib and Jackson (2013), the robustness of their direct feedback relationship (formulated from a base model) was tested on more unexpected reservoir behaviours which include shape of relative permeability curves, horizontal permeability, width of shale-free zone and aquifer strength. Although more uncertainties were introduced in this work than the previous ones, the approach of performance evaluation is basically the same.…”

Section: Introductionmentioning

confidence: 99%

Receding horizon control for oil reservoir waterflooding process

Grema

Cao

2017

Systems Science & Control Engineering

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Waterflooding is a recovery technique where water is pumped into an oil reservoir for increase in production. Changing reservoir states will require different injection and production settings for optimal operation which can be formulated as a dynamic optimization problem. This could be solved through optimal control techniques which traditionally can only provide an open-loop solution. However, this solution is sensitive to uncertainties which is inevitable to reservoirs. Direct feedback control has been proposed recently for optimal waterflooding operations with the aim to counteract the effects of reservoir uncertainties. In this work, a feedback approach based on the principle of receding horizon control (RHC) was developed for waterflooding process optimization. Application of RHC strategy to counteract the effect of uncertainties has yielded gains that vary from 0.14% to 19.22% over the traditional open-loop approach. The gain increases with introduction of more uncertainties into the configuration. The losses incurred as a result of the effect of feedback is in the range of 0.25%-15.21% in comparison to 0.39%-31.51% for the case of traditional open-loop control approach. ARTICLE HISTORY

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“…(Dilib and Jackson, 2012) tested the robustness of a predefined reactive control strategy with respect to reservoir description uncertainty of the case study. A reactive and (pseudo) proactive (essentially a predefined reactive) control strategy were compared by (Pinto et al, 2012) for a particular, rate-constraint case.…”

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confidence: 99%

Role of Artificial Lift in Wells With a Downhole, Flow Control Completion

Gasbarri

Muradov²,

Davies³

2013

SPE Offshore Europe Oil and Gas Conference and Exhibition

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Several hundred of Intelligent wells well that combine downhole flow control and monitoring have been installed over the last decade in a wide range of reservoir production scenarios. Numerous publications have reported the successful use of the technology to reduce the number of well interventions, improve sweep efficiency, reduce risk, mitigate production problems, etc. A number of zonal inflow and outflow control methodologies have been proposed to meet a wide range of different well objectives as well as different production or injection conditions. Research still continues in the areas of simple reactive or predefined passive control methods employed by Intelligent wells. This is even more true if it is planned to use proactive control which requires optimisation of a complex multivariable problem.Efficient downhole flow control comes at the cost of adding an additional pressure loss. Such losses can be significant, jeopardizing the well productivity and sometimes carrying the risk of a reduced well performance of the intelligent well when compared to the corresponding conventional well. Installing artificial lift can compensate for this reduced well performance; not only extending the well life, but also adding additional well control flexibility. However, it also poses two extra problems: how to (a) optimally design the artificial lift equipment and (b) avoid interference between the I-well's control of the zonal inflow and control of the artificial lift.This paper sets out how to(1) Add control flexibility to downhole flow control by artificial lift and (2) Design an electric submersible pump that operates flexibly with down hole, multi-zone inflow control actions.Improved active and passive downhole flow control will be discussed in a rigorous, mathematical manner that allows the conclusion that the combination of artificial lift and downhole flow control provides greater zonal flow control flexibility and reduces the inflow imbalance. Also, two conceptual, electric submersible pump design options, employing (1) a variable wellhead choke and (2) a variable pump operating frequency, are proposed and illustrated. Both of these proposed pump design options could cope with the changing well inflow performance created by downhole flow control devices in situations where the standard pump design workflow was ineffective.

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Closed-loop Feedback Control for Production Optimization of Intelligent Wells under Uncertainty

Cited by 10 publications

References 58 publications

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Receding horizon control for oil reservoir waterflooding process

Role of Artificial Lift in Wells With a Downhole, Flow Control Completion

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