气候变化领域集成服务门户(CCPortal): Oil families and inferred source rocks of the Woodford–Mississippian tight oil play in northcentral Oklahoma

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DOI	10.1306/09181818049
	Oil families and inferred source rocks of the Woodford–Mississippian tight oil play in northcentral Oklahoma
	Wang T.; Philp R.P.
发表日期	2019
ISSN	0149-1423
卷号	103 期号:4
英文摘要	Twenty-four oils produced from the Woodford Shale and overlying Mississippian strata in central Oklahoma were characterized geochemically to determine their possible source(s). The 168 core samples from the Woodford and Mississippian sections of 14 wells in central Oklahoma were initially characterized by total organic carbon (TOC), Rock-Eval, and vitrinite reflectance, and select samples (TOC > 1.0 wt. %) were subjected to biomarker analyses to characterize source input, depositional environment, maturity, and oil-to-source rock correlations. Thermal maturity parameters indicate the Woodford Shale is immature to marginally mature in Payne County, Oklahoma, and shows a progressive increase in maturity toward the southwest. Close to the Nemaha uplift, the Woodford is in the main stage of oil generation. It is proposed that the oils in this area have three possible origins: (1) Oils produced from the Woodford and overlying Mississippian strata have similar fingerprints, suggesting the Woodford Shale and overlying Mississippian strata are in communication; (2) oils produced near the Nemaha uplift (Logan and western Payne Counties) were sourced from the Woodford but had a significant Mississippian source contribution based on source-specific biomarkers; (3) oils east of the Cherokee platform (eastcentral Payne County) share strong Woodford source characteristics, and they were not generated in situ from the immature Woodford Shale but probably migrated from the Woodford Shale in the deeper part of the Anadarko Basin in southern Oklahoma. These results are consistent with the findings that indicate abundant marine coarse-grained biogenic silica (radiolarian-rich) chert facies found in eastcentral Payne County may contribute to good reservoir petrophysical properties, suggesting the Woodford Shale may not be a source in this area but simply a tight reservoir. Copyright ©2019. The American Association of Petroleum Geologists. All rights reserved.
语种	英语
scopus关键词	Organic carbon; Petrophysics; Silica; Depositional environment; Petrophysical properties; Source characteristics; Source contributions; Source rock correlation; Thermal maturity; Total Organic Carbon; Vitrinite reflectance; Biomarkers; biomarker; hydrocarbon generation; hydrocarbon migration; hydrocarbon reservoir; Mississippian; shale; silica; source rock; total organic carbon; Oklahoma [United States]; United States
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/125026
作者单位	College of Resources and Environment, Yangtze University, Wuhan, China; School of Geology and Geophysics, University of Oklahoma, Norman, OK, United States
推荐引用方式 GB/T 7714	Wang T.,Philp R.P.. Oil families and inferred source rocks of the Woodford–Mississippian tight oil play in northcentral Oklahoma[J],2019,103(4).
APA	Wang T.,&Philp R.P..(2019).Oil families and inferred source rocks of the Woodford–Mississippian tight oil play in northcentral Oklahoma.AAPG Bulletin,103(4).
MLA	Wang T.,et al."Oil families and inferred source rocks of the Woodford–Mississippian tight oil play in northcentral Oklahoma".AAPG Bulletin 103.4(2019).