Trace element geochemistry of crude oils and condensates from South African Basins

被引：48

作者：

Akinlua, A. ^{[1
,2
]}

Sigedle, A. ^{[2
]}

Buthelezi, T. ^{[2
]}

Fadipe, O. A. ^{[2
]}

机构：

[1] Obafemi Awolowo Univ, Dept Chem, Fossil Fuels & Environm Geochem Grp, Ife, Nigeria

[2] Univ Western Cape, Dept Earth Sci, Cape Town, South Africa

来源：

MARINE AND PETROLEUM GEOLOGY | 2015年 / 59卷

关键词：

Oil; Condensate; Bredardorp Basin; Orange Basin; Oil family; Depositional environment; Trace elements; LA LUNA FORMATION; ORANGE BASIN; PETROLEUM SYSTEM; SOURCE ROCKS; VANADIUM; NICKEL; CLASSIFICATION; INSIGHTS; METALS; RATIO;

D O I：

10.1016/j.marpetgeo.2014.07.023

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Crude oil and condensates samples from Bredasdorp and Orange Basins, South Africa were analyzed for trace elements using inductively coupled plasma - optical emission spectrometry. The oil and condensate samples were analyzed to classify the oils into family and to determine the origin of the oils and depositional environment of organic matter that yielded the oils using trace elements. The concentrations of the elements (Co, Cr, Cu, Fe, Mn, Ni, and V) determined ranged from 0.10 to 7364.7 ppb. Iron is the most abundant element in the samples while cobalt is least abundant. Both concentrations and ratios of nickel and vanadium showed two main families of oils; oils of marine origin and oils of terrestrial origin. Oil samples from the Orange Basin are mainly of marine source and their organic matter were deposited under anoxic conditions. Most of the oil samples from the Bredasdorp Basin are of marine origin with a few samples having terrestrial origin. Cluster analysis also classified the oil and condensate samples from the two basins into two main families of marine and terrestrial sources. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：286 / 293

页数：8

共 30 条

[11] Re-Os geochronology and Os isotope fingerprinting of petroleum sourced from a Type I lacustrine kerogen: Insights from the natural Green River petroleum system in the Uinta Basin and hydrous pyrolysis experiments [J].

Cumming, Vivien M. ;

Selby, David ;

Lillis, Paul G. ;

Lewan, Michael D. .

GEOCHIMICA ET COSMOCHIMICA ACTA, 2014, 138 :32-56

[12]

Davies C. P. N., 1997, THESIS U STELLENBOSC, P286

[13] Unusual biomarker maturation ratio changes through the oil window, a consequence of varied thermal history [J].

Davies, CPN .

ORGANIC GEOCHEMISTRY, 1997, 27 (7-8) :537-560

[14] DISTRIBUTION OF TRACE-ELEMENTS IN CRUDE OILS FROM SOUTHERN GERMANY [J].

ELLRICH, J ;

HIRNER, A ;

STARK, H .

CHEMICAL GEOLOGY, 1985, 48 (1-4) :313-323

[15]

Filby R.H., 1987, METAL COMPLEXES FOSS, V344, P146

[16] CLASSIFICATION OF SOME NEW-ZEALAND CRUDE OILS AND CONDENSATES BY MEANS OF THEIR TRACE-ELEMENT CONTENTS [J].

FRANKENBERGER, A ;

BROOKS, RR ;

VARELAALVAREZ, H ;

COLLEN, JD ;

FILBY, RH ;

FITZGERALD, SL .

APPLIED GEOCHEMISTRY, 1994, 9 (01) :65-71

[17] V/Ni ratio as a parameter in palaeoenvironmental characterisation of nonmature medium-crude oils from several Latin American basins [J].

Galarraga, F. ;

Reategui, K. ;

Martinez, A. ;

Martinez, M. ;

Llamas, J. F. ;

Marquez, G. .

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2008, 61 (01) :9-14

[18]

HITCHON B, 1984, AAPG BULL, V68, P838

[19]

Horsfield B., 2007, S AFR J GEOL, V110, P262

[20] COMPARISON OF GEOCHEMICAL INDEXES USED FOR THE INTERPRETATION OF PALAEOREDOX CONDITIONS IN ANCIENT MUDSTONES [J].

JONES, B ;

MANNING, DAC .

CHEMICAL GEOLOGY, 1994, 111 (1-4) :111-129

← 1 2 3 →