EOR: Past, Present and What the Next 25 Years May Bring

Stosur, George

doi:10.2118/84864-ms

Cited by 31 publications

(6 citation statements)

References 1 publication

(2 reference statements)

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“…The advantageous part of the development of mature fields through tertiary oil recovery is the data, information and experience gathered throughout the production life that would significantly minimize the geological or technical uncertainties. The uncertainty in oil prices is the major factor that affects the applications of tertiary recovery projects (Taber et al, 1997b;Stosur, 2003). The following points should be taken into consideration during the planning of a tertiary recovery application to develop a mature field:…”

Section: Field Scale Applicationsmentioning

confidence: 99%

Development of mature oil fields — A review

Babadagli

2007

Journal of Petroleum Science and Engineering

165

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Section: Field Scale Applicationsmentioning

confidence: 99%

Development of mature oil fields — A review

Babadagli

2007

Journal of Petroleum Science and Engineering

165

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“…The higher amount of air in the oil helps to reduce its viscosity to a greater extent and, thus, enhances its recovery. In addition to reducing the oil viscosity, the increase in the temperature is expected to cause the gas–oil mixture to expand and help increase the oil recovery further. , …”

Section: Resultsmentioning

confidence: 99%

Enhanced Oil Recovery with Air Injection: Effect of the Temperature Variation with Time

2016

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Gas-based enhanced oil recovery (EOR) processes rely on the injection of gases, such as carbon dioxide, nitrogen, and natural gas, into heavy oil reservoirs to reduce native oil viscosity. Although these processes are very promising, they face the problem of limited and costly gas supply. This paper investigates the conditions, specifically of temperature variation, under which freely available air at low temperatures and low pressures and in a non-reactive environment may be used for EOR. To that end, experiments are carried out by injecting air into a lab-scale heavy oil reservoir at different pressures (0.169, 0.286, 0.403, and 0.514 MPa absolute) and temperatures in the range of 25−90 °C. Reservoirs of four different permeabilities (40, 87, 204, and 427 darcy) are used in experiments, which demonstrate heavy oil recovery of up to 58.2% original oil in place (OOIP) with constant temperature air injection. When air is injected with a periodic temperature variation between 75 and 90 °C that has an average of 78 °C, the recovery is found to increase to 69.1% OOIP. This is an improvement of 18.6% over that using constant temperature air injection at the maximum temperature of 90 °C.

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“…The advantageous part of the development of mature fields through tertiary oil recovery is the data, information and experience gathered throughout the production life that would significantly minimize the geological or technical uncertainties. The uncertainty in oil prices is the major factor that affects the applications of tertiary recovery projects 24,76 . The following points should be taken into consideration during the planning of a tertiary recovery application to develop a mature field:…”

Section: Field Scale Applicationsmentioning

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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EOR: Past, Present and What the Next 25 Years May Bring

Abstract: The paper presents an analysis of worldwide EOR activities and trends for the mid-term future. The focus of the paper is on EOR production levels and the corresponding number of projects within each major EOR technology group: thermal, gas flooding, chemical and other methods.

Cited by 31 publications

References 1 publication

Development of mature oil fields — A review

Development of mature oil fields — A review

Enhanced Oil Recovery with Air Injection: Effect of the Temperature Variation with Time

Mature Field Development - A Review

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