Measurement of Z-factors for carbon dioxide sequestration

Paulus Adisoemarta, Scott M Frailey, Akanni S. Lawal

Research output: Contribution to conferencePaper

Abstract

Due to concerns about global climate change, carbon dioxide gases from natural and industrial sources are more and more re-injected into depleted gas reservoirs. The PVT laboratory at Texas Tech University has undertaken a comprehensive study on compressibility factor (Z-factor) of hydrocarbon (HC) gas at various amount of CO2. For the sole purpose of the measured Z-factor data, three temperatures of 100°F, 160°F and 220°F and pressures ranges from 50 psia to 5000 psia are selected as representative of the depleted gas reservoirs (DGRs). In order to analyze the various phase behavior to be encountered in gas reservoirs (dry gas, wet gas and retrograde gas), the median gas compositions for dry, wet and retrograde gases are specified by gas type. The gas types are categorized by representative compositional analysis for the three types of gas reservoirs (dry gas, wet gas and retrograde gas). The measurements of z-factors for CO2-hydrocarbon mixtures in varying proportions and at the three specified temperatures for various pressures are performed on the median gas compositions of the type gases. The results of the Z-factor measurements of CO2-hydrocarbon mixtures are used to interpret the expected phase behavior to be encountered in the geologic storage of CO2 in gas reservoirs. Also, the Z-factor measurements of CO2-retrograde gas mixtures are used to quality the benefits of enhanced gas and condensate recovery in gas reservoirs.

Original languageEnglish (US)
StatePublished - Dec 1 2004
Event2004 AIChE Annual Meeting - Austin, TX, United States
Duration: Nov 7 2004Nov 12 2004

Other

Other2004 AIChE Annual Meeting
CountryUnited States
CityAustin, TX
Period11/7/0411/12/04

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Carbon dioxide
Gases
Hydrocarbons
Phase behavior
Chemical analysis
Compressibility
Climate change
Gas mixtures

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Adisoemarta, P., Frailey, S. M., & Lawal, A. S. (2004). Measurement of Z-factors for carbon dioxide sequestration. Paper presented at 2004 AIChE Annual Meeting, Austin, TX, United States.

Measurement of Z-factors for carbon dioxide sequestration. / Adisoemarta, Paulus; Frailey, Scott M; Lawal, Akanni S.

2004. Paper presented at 2004 AIChE Annual Meeting, Austin, TX, United States.

Research output: Contribution to conferencePaper

Adisoemarta, P, Frailey, SM & Lawal, AS 2004, 'Measurement of Z-factors for carbon dioxide sequestration' Paper presented at 2004 AIChE Annual Meeting, Austin, TX, United States, 11/7/04 - 11/12/04, .
Adisoemarta P, Frailey SM, Lawal AS. Measurement of Z-factors for carbon dioxide sequestration. 2004. Paper presented at 2004 AIChE Annual Meeting, Austin, TX, United States.
Adisoemarta, Paulus ; Frailey, Scott M ; Lawal, Akanni S. / Measurement of Z-factors for carbon dioxide sequestration. Paper presented at 2004 AIChE Annual Meeting, Austin, TX, United States.
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