Diamondoid Hydrocarbons as Maturity Indicators for Condensates from Southern Indus Basin, Pakistan
Joint Authors
Nasir, Shagufta
Fazeelat, Tahira
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-23
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Diamondoid hydrocarbons have been examined in condensates reservoired in the Southern Indus Basin using GC-MS.
Bulk properties reveal that samples are waxy and low sulfur with the exception of Pakhro and Gopang which are nonwaxy.
TIC show bimodal distribution of n-alkanes along with high abundance of C20+ n-alkanes indicating substantial contribution of terrigeneous OM in these samples.
CPI close to one is consistent with mature nature of oils.
The samples show two ranges of Pr/Ph ratios.
Those within the range of 2.2–2.7 reflect marine depositional settings for OM while others with Pr/Ph >3 may have originated from terrestrial OM deposited under marine oxic conditions.
The cross plot of Pr/n-C17 versus Ph/n-C18 indicate type III kerogen as main source of OM deposited under marine to marine oxic conditions.
The values of diamondoid based maturity parameters, like methyladamantane index 54.1–75.8% and methyldiamantane index 34.9–56.3% indicate high level of thermal maturity corresponding to vitrinite reflectance 1.1–1.6%.
No biodegradation is observed in any of these samples as shown by methyladamantanes/adamantane 3.99–5.52 and methyldiamantanes/diamantane 2.16–2.99 and supported by high values of API gravity (45.13°–60.02°) and absence of UCM.
American Psychological Association (APA)
Nasir, Shagufta& Fazeelat, Tahira. 2013. Diamondoid Hydrocarbons as Maturity Indicators for Condensates from Southern Indus Basin, Pakistan. Journal of Chemistry،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-487081
Modern Language Association (MLA)
Nasir, Shagufta& Fazeelat, Tahira. Diamondoid Hydrocarbons as Maturity Indicators for Condensates from Southern Indus Basin, Pakistan. Journal of Chemistry No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-487081
American Medical Association (AMA)
Nasir, Shagufta& Fazeelat, Tahira. Diamondoid Hydrocarbons as Maturity Indicators for Condensates from Southern Indus Basin, Pakistan. Journal of Chemistry. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-487081
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-487081