EOR Field Management Through Well-Planned Surveillance
- Marcel Zwaan (Shell Intl. E&P Co.) | Rob Hartmans (Petroleum Development Oman) | Stan Schoofs (Shell Intl. E&P Co.) | Albert Hendrik De Zwart (Shell Intl EP Co) | Guillermo Rocco (Petroleum Development Oman) | Rashid Adawi (PDO) | Faisal Saadi (PDO) | Khalfan Shuaili (PDO) | Jorge L. Lopez (Shell Intl. E&P Co.) | joel Ita (Shell Global Solutions International) | Tanguy Plerre Yves Lhomme (Delft U. of Technology) | Tibi Sorop (Shell) | Yuan Qiu (Shell International B.V.) | Paul van den Hoek (Shell) | Fahad Al Kindy (Petroleum Development Oman) | Said Al-Busaidi (Petroleum Development Oman) | John Elliot Fraser (Petroleum Development Oman)
- Document ID
- Society of Petroleum Engineers
- SPE EOR Conference at Oil and Gas West Asia, 16-18 April, Muscat, Oman
- Publication Date
- Document Type
- Conference Paper
- 2012. Society of Petroleum Engineers
- 1.1 Well Planning, 5.4.6 Thermal Methods, 5.6.4 Drillstem/Well Testing, 5.1.2 Faults and Fracture Characterisation, 5.1.9 Four-Dimensional and Four-Component Seismic, 5.5.3 Scaling Methods, 5.1 Reservoir Characterisation, 5.6.11 Reservoir monitoring with permanent sensors, 5.1.6 Near-Well and Vertical Seismic Profiles, 5.4.2 Gas Injection Methods, 3 Production and Well Operations, 5.3.4 Integration of geomechanics in models, 4.3.4 Scale, 1.2.2 Geomechanics, 5.7.2 Recovery Factors, 5.8.7 Carbonate Reservoir, 5.4.1 Waterflooding, 3.3 Well & Reservoir Surveillance and Monitoring, 5.4.7 Chemical Flooding Methods (e.g., Polymer, Solvent, Nitrogen, Immiscible CO2, Surfactant, Vapex), 2.2.2 Perforating, 5.1.5 Geologic Modeling
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PDO has implemented Enhanced Oil Recovery (EOR) methods including thermal, chemical and miscible gas injection projects in several fields. In the initial phase of these EOR projects, well and reservoir surveillance is key to increase the understanding of the effectiveness of the EOR processes in the various reservoirs.
However, the interpretation of this advanced surveillance data and integration into well and reservoir management workflows is still challenging. This paper describes the results of the integrated workflows for the interpretation, modeling and integration of surveillance data in four EOR projects. The surveillance methods include geomechanical modeling, thermal reservoir modeling and monitoring through time lapse seismic, surface deformation, microseismic, temperature, pressure and saturation logging. This paper shows that the surveillance has contributed to the understanding of recovery mechanism in a pattern steam flood, it has supported decisions well-recompletions and work-overs and it has supported decisions on injection rates and surveillance planning in the chemical flood project.
Well-planned and executed reservoir surveillance has proven in the past to add significantly to the production and ultimate recovery from reservoirs . Because of progress in technology in areas of data acquisition, processing and modeling
techniques, well and reservoir surveillance data are increasingly used to optimize EOR processes [9, 10, 11].
The ultimate position of well and reservoir surveillance in mature EOR projects is to have surveillance technologies that add maximum value, which are sustainable, non-intrusive and deliver all of this at lowest cost. In all cases the value of these technologies is realized by optimising the field management decisions and increase hydrocarbon recovery.
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