Seismic Surveillance for Reservoir Delivery
|Instructor||Olav Inge Barkved (BP – Stavanger, Norway)|
|Book||Available in EAGE Bookshop|
|Keywords||4D; integration; interpretation; marine; monitoring; seismicity; shelf; time-lapse|
Time-lapse seismic surveys or 4D seismic provides snapshots of a producing hydrocarbon reservoir and its surroundings. The benefit of the technology in monitoring fluid and pressure changes and to point out bypassed oil or un-drained compartments has been well documented over the last 10-15 years. Still the technology is undergoing rapid development. One of the recent focuses has been the use of permanent seismic installation allowing for cost effective frequent surveying, and an added benefit of providing additional recordings which would not be available without the permanent array. In addition recent case studies have helped raise the awareness of how seismic monitoring techniques can be used to understand possible production induced effects outside the reservoir, often linked to geo-mechanical changes. This course will provide some context on what is driving the dynamic changes linked to producing a hydrocarbon reservoir and what we should expect to observe using seismic technologies in the varied geological setting. It will address key issues that impact the feasibility of time-lapse seismic, and evaluate established methods. However, the focus will be on “new” technologies, use of permanent array, frequent seismic surveying and integration of the data. Examples from the Valhall field will be used extensively to illustrate the potential of seismic data and to articulate issues related to interpretation and integration. This will include data examples from marine towed 4D, frequent surveying using permanently installed sensors, in-well recordings and analysis of passive data, including micro seismicity. Use of seismic surveillance information to support reservoir management, new well delivery and base management will be a central part of the presentation.
- What type of fields and mechanism are candidates for seismic surveillance?
- An overview over available technologies for seismic surveillance of producing reservoirs, with a primary focus on time lapse methods and permanent systems
- 4D seismic and linkage to geo-mechanics
- Application and Integration across the disciplines; challenges and benefits
- Case stories
- How we value the seismic surveillance
- How recent example of emerging technologies can tell us what the future will bring
Basic appreciation of geosciences and petroleum technical principles linked to producing hydrocarbon.
About the instructor