Link to the University of Pittsburgh Homepage
Link to the University Library System Homepage Link to the Contact Us Form

VELOCITY MEASUREMENTS IN RESERVOIR ROCK SAMPLES FROM A LIMESTONE UNIT USING VARIOUS PORE FLUIDS, AND INTEGRATION WITH WELL LOGS AND SEISMIC DATA

Purcell, Christopher (2012) VELOCITY MEASUREMENTS IN RESERVOIR ROCK SAMPLES FROM A LIMESTONE UNIT USING VARIOUS PORE FLUIDS, AND INTEGRATION WITH WELL LOGS AND SEISMIC DATA. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

[img]
Preview
PDF
Primary Text

Download (9MB) | Preview

Abstract

One of the most promising methods proposed to mitigate excess global CO2 is carbon sequestration, a process in which CO2 is pressurized and injected into geologic formations. A technical challenge surrounding the geologic sequestration of CO2 is tracking the movement of the fluids pumped underground. Monitoring, verification and accounting activities related to CO2 storage are important for assuring that sequestered CO2 does not escape to the surface. Tracking this carbon dioxide can be considerably aided by reflection seismic-based detection methods. This thesis employs lab scale velocity measurements of core samples, under in situ reservoir pressure and temperature conditions, combined with multiple 3D reflection seismic surveys, to effectively track the movements of CO2 after injection.
The National Energy Technology Laboratory (NETL) of the United States Department of Energy began to participate in research of an enhanced oil recovery project including the injection of CO2 deep into a reservoir structure, repeat reflection seismic surveys, collection of well logs, and rock physics analysis of sample core material. Our study is concentrated on a small area of this field around the injection site. At this site, hydrocarbons were previously moved via water injection. We obtained ultrasonic elastic wave velocity measurements that were conducted under several different saturation scenarios, including CO2 saturated samples, so a quantification of the conditions in different parts of the reservoir could be determined.
This approach can help to characterize what is taking place inside the reservoir. Core-scale velocity measurements under in situ conditions allow us to predict changes in future well log or seismic surveys. The large amounts of CO2 accumulated over the past four decades in this reservoir give us a real world example of how an EOR site matures. Combining core scale, well log scale, and seismic scale measurements allows a better understanding of the various processes at work when CO2 is sequestered in a limestone reservoir.


Share

Citation/Export:
Social Networking:
Share |

Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Purcell, Christopherpurcell429@gmail.com
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairHarbert, Williamharbert@pitt.eduHARBERT
Committee MemberStewart, Brianbstewart@pitt.eduBSTEWART
Committee MemberAbbott, Markmabbott1@pitt.eduMABBOTT1
Committee MemberAnderson, Thomastaco@pitt.eduTACO
Committee MemberSoong, Yee
Date: 9 October 2012
Date Type: Publication
Defense Date: 7 July 2012
Approval Date: 9 October 2012
Submission Date: 9 October 2012
Access Restriction: 5 year -- Restrict access to University of Pittsburgh for a period of 5 years.
Number of Pages: 163
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Geology and Planetary Science
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: Carbon Sequestration, Climate, Carbonate Reservoir, Rock Physics, Seismic Monitoring, Enhanced Oil Recovery
Date Deposited: 09 Oct 2012 19:41
Last Modified: 09 Oct 2017 05:15
URI: http://d-scholarship.pitt.edu/id/eprint/15805

Metrics

Monthly Views for the past 3 years

Plum Analytics


Actions (login required)

View Item View Item