Oil Well Allocation: The Ultimate Interpolation Problem

Geest, Robert van der; Morud, Svein Arne; Zaostrovski, Andrei

doi:10.1016/s1474-6670(17)38579-8

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…A comparative simulation study of our soft sensor against an interpolation method for the estimation of production rates in an oil well may be found in Ref. 3. That paper also includes a detailed description of the model.…”

Section: Soft Sensorsmentioning

confidence: 99%

Reliability Through Data Reconciliation

Geest¹,

Broman²,

Johnson³

et al. 2001

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We propose a flexible simulator of an oil well that may be used for several forms of online, real-time reconciliation of data from existing measurement equipment. It turns out that data reconciliation used as part of the instrumentation philosophy on an oilfield constitutes a dissimilar, redundant level of instrumentation. This additional level of instrumentation may be used to make the existing measurement hardware more reliable by verifying the validity of measurement data. In addition, the technology may be used to replace permanently installed hardware in times of failure. Greater reliability is expected to contribute to greater system uptime by reducing the need for workovers.

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Section: Soft Sensorsmentioning

confidence: 99%

Reliability Through Data Reconciliation

Geest¹,

Broman²,

Johnson³

et al. 2001

All Days

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“…This software system has also been discussed in [3] and [4], and a similar software system is described in [2]. The wells are sparsely instrumented, and additional major challenges arise due to low flow rates.…”

Section: Introductionmentioning

confidence: 99%

Software That Enables Flow Metering of Well Rates With Long Tiebacks and With Limited or Inaccurate Instrumentation

Melbø¹,

Morud²,

Geest³

et al. 2003

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Accurate metering of flow rates and prediction of water breakthrough are important issues in offshore oil production. The multiphase flow rates can be found for instance from frequent well testing, from multiphase flow meters, or from software simulations. Multiphase flow meters are very expensive and so are single-well tests, especially in cases with long tiebacks. On the contrary, software simulations are cheap, they can be made accurate, and simulations can usually be based on existing sensors. Also, software is easy to install, operate, and maintain compared to hardware multiphase meters.In this article we describe the main components needed in a flexible software system for flow metering that can handle sparsely instrumented production facilities. Several sources of implicit information are pointed out, and a tuning strategy that avoids single-well tests is described. We also present examples that show the power of advanced simulations in situations that are not well handled by multiphase flow meters and standard software because of very low flow rates. What makes the situation in the examples even harder is that: There is no available information about the choke, the bottom hole sensors fail, and the temperature measurements are influenced by the seawater temperature. Despite this, good results are obtained.

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