Dodds, Kevin

Hovorka, Susan

Krahenbuhl, Richard

Li, Yaoguo

Reitz, Anya

International Journal of Greenhouse Gas Control

English

Dodds, K.

Krahenbuhl, R.

Reitz, A.

Li, Y.

Hovorka, Susan D.

Texas ScholarWorks

Keywords: monitoring, reservoirCited as:Dodds, K., R. Krahenbuhl, A. Reitz, Y. Li, and S.D. Hovorka, 2013, Evaluating time-lapse borehole gravity for CO2 plume detection at SECARB Cranfield, GCCC Publica-tion Series #2013-06, originally published in International Journal of Greenhouse Gas ControlEvaluating time-lapse borehole gravity for CO2 plume detection at SECARB CranfieldGCCC Publication Series #2013-06        K. Dodds    R. Krahenbuhl    A. Reitz    Y. Li    S.D. Hovorka1 AbstractMonitoring of CO2 storage processes provides a renewed challenge of adapt-ing oil and gas monitoring technology to provide measurements required of operator, regulatory authorities and the public. These requirements include providing measurements that will support an understanding of safe contain-ment of the CO2 plume, and inform evidence that injected CO2 remains in the storage complex for the purposes of green house gas accounting, cost effec-tively. These roles for monitoring demand a re-evaluation of deep reading measurements besides seismic, such as gravitational and electromagnetic tech-nologies, sensitive to density and electrical properties of the fluids. In particu-lar this paper explores the operational and interpretational challenges of bore-hole microgravity in a CO2 timelapse survey in two wells at the SECARB Cranfield injection site.The Southeast Partnership (SECARB) test at Cranfield, Mississippi, was the first of the commercial scale projects comprising a staged array of field de-ployments testing key issues of capacity and best methods for assuring storage permanence. More than 3 million metric tons of injected CO2 will have been injected since the start of injection in July of 2008. The site is an historic oil-field at a depth of 2500 m in the Cretaceous fluvial Tuscaloosa Formation, de-veloped by Denbury Onshore LLC. The project was unique in deploying a range of geophysical measurements including cross-well seismic and electrical resistivity tomography, from two monitoring wells positioned in line from the injector and several 100 ft down-dip in the Tuscaloosa. The CO2 Capture Project (CCP) took advantage of the multiple field acquisitions of borehole data during the injection phase of this project to acquire timelapse borehole gravity in the two monitoring wells. The objective was twofold; the first to un-derstand the operational aspects and design of the acquisition, while the sec-ond was to assess the ability of the surveys to detect the injected CO2. The baseline acquisition occurred in October 2009 and the repeat survey in Sep-tember 2010.

Evaluating time-lapse borehole gravity for CO2 plume detection at SECARB Cranfield

Kevin Dodds

Richard Krahenbuhl

Anya Reitz

Yaoguo Li

Susan Hovorka

Crossref

Evaluating time-lapse borehole gravity for CO2 plume detection at SECARB Cranfield     GCCC Digital Publication Series #12-10     Susan Hovorka Kevin Dodds Richard Krahenbuhl Anya Reitz Yaoguo Li                     Cited as:  Hovorka, S., Dodds, K., Krahenbuhl, R., Reitz, A., and Li, Yaoguo, 2012, Evaluating time-lapse borehole gravity for CO2 plume detection at SECARB Cranfield: presented at the 11th Annual International Conference on Greenhouse Gas Technologies, Kyoto, Japan, November 18-22, 2012. GCCC Digital Publication Series #12-10. Keywords: Field study-Cranfield-MS; Monitoring  

https://repositories.lib.utexas.edu/bitstream/2152/67534/2/GCCCDigPub12-10.pdf

Evaluating time-lapse borehole gravity for CO2 plume detection at SECARB Cranfield

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