1887

Abstract

Summary

Ocean bottom seismic (OBS) provides numerous advantages for reservoir monitoring offshore [ ]. This provides wide azimuth high-fold illumination in a quiet environment that results in high quality seismic data. If done with nodes, these can be placed within meters of previous locations enabling highly repeatable 4D surveys. This is a distinct advantage over streamer surveys as they are difficult to repeat in the Gulf of Mexico due to unpredictable currents. In addition, nodes can be placed in close proximity to infrastructure, eliminating the need for undershooting, thus providing good illumination of targets across the whole field. Finally, nodes provide a scalable option to design and acquire lower-cost surveys for targeted monitoring, the so-called i4D concept. All these advantages make OBS a technically robust solution for 4D seismic reservoir monitoring, especially in deepwater environments. In this paper we apply this method at the Ursa/Princess field, in a structurally complex area (subsalt). We explain how we dealt with the design challenge, present the main results and interpretation, and finish with a business impact summary.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201412550
2015-06-01
2019-12-15
Loading full text...

Full text loading...

References

  1. Beal, E., Salo, E., Corcoran, C.
    [2014] Lessons from the Deep, processing ocean-bottom seismic data. SEG, Expanded Abstracts.
    [Google Scholar]
  2. Beaudoin, G.J., Reasnor, M. D., Pfister, M., Openshaw, G.
    [2010] First wide-azimuth time-lapse seismic acquisition using ocean bottom seismic nodes at Atlantis field-Gulf of Mexico. 72nd EAGE Conference & Exhibition, Expanded Abstracts.
    [Google Scholar]
  3. Hatchell, P.J., Wang, K., Lopez, J.L., Stammeijer, J.G.F, Davidson, M.
    [2013] Instantaneous 4D seismic (i4D) for water injection monitoring. EAGE, Expanded abstracts.
    [Google Scholar]
  4. Stopin, A.A., Hatchell, P.J., Beal, E., Gutierrez, C., Soto, G., Corcoran, C.
    [2011] Results from the First OBS to OBS time-lapse Survey in the Mars Basin. EAGE, Expanded Abstracts.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201412550
Loading
/content/papers/10.3997/2214-4609.201412550
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error