Mapping Reservoir Saturation with Seismic Resolution to Improve Reservoir Model

Reymond, S.B.; Soenneland, L.; Strudley, A.

doi:10.2118/57259-ms

Cited by 3 publications

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“…Seismic studies were performed to reduce the uncertainties on the structure 126,127 and locate the remaining oil 126,128 to develop different size mature fields. Reservoir simulation is generally used to assess the field potential for any development plan and reserves booking studies for the remaining oil 129,130 .…”

Section: Reservoir Management Practicesmentioning

confidence: 99%

Mature Field Development - A Review

Babadagli

2005

Proceedings of SPE Europec/Eage Annual Conference

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractDevelopment of mature oil fields has been, and will increasingly be, an attractive subject.Mature field development practices can be divided into two major groups:(1) well engineering and (2) reservoir engineering. This paper focuses on the reservoir engineering aspects.An extensive review of previously reported reservoir management practices for mature field development is provided. After the definition of mature field and an overview, different aspects of mature field development are outlined. The first issue covered is the estimation of remaining reserves focusing on the determination of the amount and location of the residual oil after primary and secondary recovery using field, log, and core data. After valuing the remaining oil, methods to recover it are classified. They include tertiary recovery, infill drilling, horizontals, optimal waterflooding design for mature fields, optimal well placement and other reservoir management practices. Suggested or implemented field application examples for big fields owned by majors and small fields owned by independents are presented.Special attention is given to tertiary oil recovery. An extensive review and critical analysis of tertiary recovery techniques covering the theoretical, practical, and economical aspects of it are provided. The emphasis is on their applicability in mature field development in terms of effectiveness (incremental recovery) and efficiency (cost and recovery time). Laboratory and field scale applications of different tertiary recovery techniques, i.e., gas (double displacement, WAG, and miscible-immiscible HC, CO 2 , and N 2 ), chemical (dilute surfactant, polymer, and micellar injection), and thermal (air and steam) injection, conducted to develop mature fields are included. Specific examples of big/giant fields, fields producing for decades, and mid to small size fields were selected.Differences in reservoir management strategies for majors, independents, and national oil companies are discussed.

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Section: Reservoir Management Practicesmentioning

confidence: 99%

Mature Field Development - A Review

Babadagli

2005

Proceedings of SPE Europec/Eage Annual Conference

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Data Analysis Methodology for Reservoir Management

Aly

2007

All Days

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Reservoir management (starting from a development plan, implementing the plan, monitoring and evaluating the performance of the reservoir) requires knowledge of the reservoir that should be gained through an integrated data acquisition and analysis program. Data analysis program requires a great deal of effort, scrutiny and innovation. The key steps are (1) plan and organize, (2) collect and analyze, and (3) integrate and store. This approach addresses a general framework of optimizing the data analysis process. This paper attempts to highlight this type of approach. The applicability of this work is confirmed by actual field case study (Shukheir Bay Field) in Offshore Shukheir Oil Company (an international joint venture company in Egypt). Such study is an original contribution to the knowledge of the data analysis process, which proved effective in clarifying the overall view of the reservoir performance in view of facilitating decision making for developmental plans. Introduction Reservoir management is an on-going, dynamic process of collecting, analyzing, validating, and integrating reservoir description data and performance data into an optimal reservoir development and depletion plan as shown in Fig. 1.1–4 It can also be defined as an efficient use of resources for decision making proposes on the basis of facts, information and knowledge in order to achieve the maximum hydrocarbon recovery at the lowest cost, while protecting the environment and people's health, and maintaining harmony with society as shown in Fig. 2. Making smart decision depends on the ability to analyze and integrate the available data from the disciplines of geology, geophysics, and reservoir engineering. 5–7 Reservoir management not only involves the drawing of a field exploitation plan, but also the implementation of a wide and systemic strategy that considers the following elements:knowledge of the reservoirs that are being produced,technology available that helps improve management,people with sufficient skills and engaged in reservoir management, andmanagement environment to asses the impact of social, economical and regulations factor on reservoir management process. When these elements are integrated, decision can be made and strategy developed for achieving managements goals. The goals of reservoir managements are to maximize profitability and economical recovery of hydrocarbons.8, 9 There is no doubt that reservoir management is an art and skill as well as a science.10–14 No short cuts or easy numerical solutions exist for the complex problem of developing a hydrocarbon resource that adequately substitutes for skill, experience, and vision. The task of management is not question; however, the quality of management is at stake. The quality of the management depends on the quality of the analysis and the integrating of the reservoir data. This paper discusses the analysis of the reservoir data that can be determined from various disciplines, shows how these data can be integrated to obtain reservoir description, and summarizes the use of this information in reservoir management. Data Analysis Methodology The data analyses program in the reservoir management process is needed to form a picture of an accumulation and to have a good understanding of the reservoir geometry, rock properties, phase behavior, fluid properties and flow characteristics. Data analyses require a great deal of effort, scrutiny and innovation. The key steps are (1) plan and organize, (2) collect and analyze, and (3) integrate and store. 1. Data Planning. The data planning should address the ties between data needs and data applications and cost/benefits assessment.5 A practical compromise (between those who want truckloads of data and those who don't need any) can be reached by asking a few questions: can I do without this piece of data? Do I need to generate site-specific data? What is the benefits/risk impact on the quality of the decision based on those data?

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Mature Field Development - A Review

Babadagli

2005

All Days

View full text Add to dashboard Cite

Development of mature oil fields has been, and will increasingly be, an attractive subject.Mature field development practices can be divided into two major groups:well engineering andreservoir engineering.This paper focuses on the reservoir engineering aspects. An extensive review of previously reported reservoir management practices for mature field development is provided.After the definition of mature field and an overview, different aspects of mature field development are outlined.The first issue covered is the estimation of remaining reserves focusing on the determination of the amount and location of the residual oil after primary and secondary recovery using field, log, and core data.After valuing the remaining oil, methods to recover it are classified.They include tertiary recovery, infill drilling, horizontals, optimal waterflooding design for mature fields, optimal well placement and other reservoir management practices.Suggested or implemented field application examples for big fields owned by majors and small fields owned by independents are presented. Special attention is given to tertiary oil recovery.An extensive review and critical analysis of tertiary recovery techniques covering the theoretical, practical, and economical aspects of it are provided.The emphasis is on their applicability in mature field development in terms of effectiveness (incremental recovery) and efficiency (cost and recovery time).Laboratory and field scale applications of different tertiary recovery techniques, i.e., gas (double displacement, WAG, and miscible-immiscible HC, CO[2], and N[2]), chemical (dilute surfactant, polymer, and micellar injection), and thermal (air and steam) injection, conducted to develop mature fields are included.Specific examples of big/giant fields, fields producing for decades, and mid to small size fields were selected.Differences in reservoir management strategies for majors, independents, and national oil companies are discussed. Introduction The world average of oil recovery factor is estimated 35%.Additional recovery over this "easy oil" depends on the availability of proper technologies, economic viability, and effective reservoir management strategies.On the other hand, chance of discovering giant fields remarkably decreases1. The discovery rate for the giant fields peaked in the late 60s and early 70s and declined remarkably in the last two decades. About thirty giant fields comprise half of the world oil reserves and most of them are categorized as mature field.The development of those fields entails new and economically viable techniques, and proper reservoir management strategies. Mature field development is a broad subject.It can, however, be divided into two main parts:Well development, andreservoir development.Depending on the field type, history, and prospects, the development plans could be done on either one or both. This paper covers reservoir engineering aspects of mature field development.Determination of the amount and location of the remaining oil is the key issue in this exercise.Techniques to improve the recovery factor such as tertiary recovery, infills, horizontals, and optimal placement of the new wells are the other elements of reservoir development. Definition and elements of mature field development Oil fields after a certain production period are called mature field.A more specific definition of mature fields is the fields reached the peak of their production or producing fields in declining mode.A third definition could be the fields reached their economic limit after primary and secondary recovery efforts.Fig. 1 shows a typical production life of a field.Any points indicated by a question mark can be considered as the time when the maturity is reached.The tendency, however, is to define the decline period indicated by the arrow in Fig. 1, which is typically reached after having some secondary recovery efforts.Increasing water and gas production, decreasing pressure, and aging equipment are other indicators of maturity.

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Mapping Reservoir Saturation with Seismic Resolution to Improve Reservoir Model

Cited by 3 publications

References 1 publication

Mature Field Development - A Review

Mature Field Development - A Review

Data Analysis Methodology for Reservoir Management

Mature Field Development - A Review

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