Near-Wellbore Modeling to Assist Operation of an Intelligent Multilateral Well in the Sherwood Formation

Lucas, Craig; Duffy, P.; Randall, E.; Jalali, Younes

doi:10.2118/71828-ms

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…The benefits of smart wells have been demonstrated in practical applications, especially for multiple reservoirs where commingled production is the main production strategy (Lucas et al, 2001;Jalali et al, 1998). In these operations, the control devices are commonly used in on/off mode (i.e., the branch is either opened or closed to production), which may not be the optimum way of operating these devices.…”

Section: Introductionmentioning

confidence: 99%

Decision analysis under uncertainty for smart well deployment

Yeten

Brouwer

Durlofsky

et al. 2004

Journal of Petroleum Science and Engineering

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Downhole inflow control devices allow for the flexible operation of nonconventional wells. In this paper, a method for determining the optimal performance of smart wells, i.e., wells containing downhole inflow control devices, is presented. The method entails the use of a gradient-based optimization technique in conjunction with a reservoir simulator. The optimization accounts for uncertain geology as well as the risk of failure of the control devices. A decision analysis approach is presented to determine whether or not to deploy smart completions in light of these uncertainties. The overall optimization technique is applied to several example problems involving geological models with multiple geostatistical realizations and with different reliability scenarios for the control devices. It is shown that there is significant variation in the level of improvement attainable using inflow control devices and that this improvement varies with both the valve reliability and the particular geological realization. Decision-making techniques are used to quantify the benefits obtained using optimized smart wells under different risk attitudes. D

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Section: Introductionmentioning

confidence: 99%

Decision analysis under uncertainty for smart well deployment

Yeten

Brouwer

Durlofsky

et al. 2004

Journal of Petroleum Science and Engineering

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“…Performance of horizontal wells with multiple laterals has been considered in several modeling studies. [13][14][15][16][17][18] Refs. 17-21 have reported the field applications of the multilaterals.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Performance of Multilaterals in Commingled Reservoirs

Yildiz¹

2002

Proceedings of SPE International Thermal Operations and Heavy Oil Symposium and International Horizontal Well Technology Confer

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractIn this study, a comprehensive transient model was developed for multilateral wells producing from multiple formations separated by impervious streaks. Model is flexible and is capable of simulating the flow with any number of layers, unequal initial layer pressure, non-uniform petrophysical properties for each layer, and unequal layer size. Additionally, each lateral can have nonuniform formation damage and may be selectively completed.We investigated the long-term rate decline and cumulative recovery response of the multilateral wells connecting multiple isolated formations. Total flow rate, cumulative production, and fractional rate for each branch, are all compared for several completion scenarios and layer properties. Crossflow between the layers through the wellbore is also evaluated.

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