Real-Time Monitoring of Acid Stimulation Using a Fiber-Optic DTS System

Clanton, Ray; Haney, James F.; Pruett, Rick; Wahl, Courtney; Goiffon, John; Gualtieri, Dan

doi:10.2523/100617-ms

Cited by 16 publications

(4 citation statements)

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“…A separated study also showed that with temperature sensors, it located the zones that took more acid in acid stimulation 22 . The best practice would be integrating a downhole sensing system to monitor temperature and pressure, a real-time skin model to monitor skin factor change, and a downhole flow control system to distribute the stimulation fluid to the desired location for the maximum stimulation result.…”

Section: Current Technology -Hardware Software and Their Applicationsmentioning

confidence: 98%

Optimizing Oil and Gas Production by Intelligent Technology

Zhu¹,

Furui²

2006

Proceedings of SPE Annual Technical Conference and Exhibition

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractIntelligent completion technology, namely permanent downhole monitoring and flow control devices that allow continuous monitoring and control of well flowing system, has become more and more popular today in oil and gas wells to assist well and reservoir performance management. The applications of intelligent well today are much beyond the original vision of the technology that measurement and control become possible without intervention and their associated costs by installing permanent downhole monitoring and flow control devices connected to the surface. In addition to these advantages, the technology has been used to optimize gas lift and ESP systems, sand control, formation damage control, water breakthrough, gas coning problems, and crossflow eliminations.This paper summarizes the current available intelligent technology, describes the production optimization workflow process from data acquisition to optimization and control, and focuses on a discussion of the effective approach of deploying the technology for different types of well completions and drainage volume characteristics. The majority of previous publications on intelligent completion technology have been in two areas: (1) identification of well production problems; and (2) control of the well flowing system to meet operational constraints and limits and/or improve existing well performance to higher levels. Many field examples showed that the monitoring function and the control function of intelligent completions have been applied independently. The efficiency of the integrated system could be greatly improved if monitoring and control systems are interactively integrated. Monitoring can directly guide control schemes and validate the results of their executions. The examples in the paper show that with simple interpretation of monitored data, control of well operation can be less time consuming and more effective. Likewise, downhole monitoring needs to be used with control systems so that the problems identified by monitoring systems can be treated accordingly. The approaches presented in the paper will help to maximize the value of intelligent completion.

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Section: Current Technology -Hardware Software and Their Applicationsmentioning

confidence: 98%

Optimizing Oil and Gas Production by Intelligent Technology

Zhu¹,

Furui²

2006

Proceedings of SPE Annual Technical Conference and Exhibition

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“…Repeated temperature profiles continued to allow the fluid to be tracked as it moved further downhole toward the perforations. 1 At the first diversion stage, BHP was approximately 2,000 psia and stage volume was 44.6 bbl. Soon, the top set of perforations began to take on fluid as indicated by temperature changes just below the perfs.…”

Section: Case History 1 Acidizing Stimulation Treatmentmentioning

confidence: 98%

DTS Transient Analysis: A New Tool To Assess Well-Flow Dynamics

Johnson

Sierra

Gualtieri

et al. 2006

Proceedings of SPE Annual Technical Conference and Exhibition

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractDistributed temperature sensing (DTS) is a valuable tool used to understand the dynamics of oil and gas production and injection rates. This is achieved by monitoring the temperature variations caused by flow or injection rates at the reservoir entry points. Although most documentation to date has been limited to the discussions resulting from the examination of steady-state temperature profile behavior, significantly more knowledge and better assessment of "what's happening" in wells can be gained when sequences of complete wellbore temperature profiles are analyzed during rate-related or other induced thermal transient events, such as seen in pressure transient analysis.DTS technology allows complete wellbore temperature profiles to be obtained in a short period of time without the need for wire line. Discrete temperature measurement information can be obtained along the entire wellbore using optical fiber and a laser source/detector to repeatedly pulse light down the fiber and detect the back-scattered light from every depth. The back-scattered light is the result of the interaction of each laser pulse with the fiber molecules and is proportional to the temperature of the glass at a given depth. Intensity responses of repeated light pulses are averaged to obtain acceptable temperature resolution and can be improved by increasing acquisition time.This paper discusses the value added from transient temperature analysis of DTS profiles for oil and gas wells under production, injection, and treatment conditions. Data taken with DTS technology and thermal simulators from several actual field cases will be provided to demonstrate how these techniques can improve analytical capabilities and how a temperature change has a direct relationship to production/injection layer contributions, reservoir flow properties, tubular leaks, and steam breakthrough locations. The field cases also will demonstrate how a DTS-acquired transient temperature profile analysis can be applied. In addition to the improved data acquisition capabilities, the paper will also provide the cost and safety advantages gained by using DTS transient analysis techniques.

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“…Измеренные значения температуры позволяют делать качественные оценки скорости потока в стволе скважины в разных точках нужного интервала. 16 Подобно тому, как средства геофизического контроля за разработкой могут быть использованы для изучения приемистости, распределенные датчики температуры могут быть использованы для определения профиля потока вдоль ствола скважины. Однако использование этих датчиковэто еще один шаг вперед, т.к.…”

Section: проверка достоверностиunclassified

Improved Acid Diversion Design Using a Placement Simulator (Russian)

Glasbergen

Buijse

2006

SPE Russian Oil and Gas Technical Conference and Exhibition

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Данная статья была подготовлена для представления на технической конференции и выставке Общества инженеров-нефтяников 2006 г. «Российская нефть и газ», которые будут проводиться в Москве 03-06 октября 2006 г.Данная статья была отобрана для представления программным комитетом Общества инженеров-нефтяников (ОИН) после ознакомления с информацией, содержащейся в реферате, представленном автором (авторами). Содержание статьи в представляемом виде не было рассмотрено Обществом инженеров-нефтяников и подлежит корректировке автором (авторами). Материал статьи в представляемом виде не обязательно отражает мнение Общества инженеров-нефтяников, его руководителей или членов. Статьи, представлямые на конференциях Общества инженеров-нефтяников, подлежат рецензированию редакторскими комитетами Общества инженеровнефтяников. Электронное воспроизведение, распространение или хранение любой части данной статьи с коммерческими целями без письменного согласия Общества инженеров-нефтяников не допускается. Разрешение на воспроизведение в печати ограничивается рефератом не более 300 слов; иллюстрации копированию не подлежат. Реферат должен содержать четкие сведения о месте презентации и авторах статьи. Обращайтесь письменно к библиотекарю ОИН, P.O. Box 833836, Richardson, TX 75083-3836, U.S.A., fax 01-972-952-9435.

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Real-Time Monitoring of Acid Stimulation Using a Fiber-Optic DTS System

Cited by 16 publications

References 0 publications

Optimizing Oil and Gas Production by Intelligent Technology

Optimizing Oil and Gas Production by Intelligent Technology

DTS Transient Analysis: A New Tool To Assess Well-Flow Dynamics

Improved Acid Diversion Design Using a Placement Simulator (Russian)

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