Biomarker characteristics of certain crude oils and the oil-source rock correlation for the Kurdistan oilfields, Northern Iraq

Mohialdeen, Ibrahim M.J.; Hakimi, Mohammed Hail; Al-Beyati, Fawzi M.

doi:10.1007/s12517-013-1228-3

Cited by 29 publications

(11 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hopanes are pentacyclic triterpanes commonly containing 27-35 carbon atoms in a naphthenic structure composed of four sixmembered rings and one five-membered ring (Omar et al, 2001). Hopanes have been reported to be present in crude petroleum and source rocks (Enkhtsetseg et al, 2011;Hodairi and Philp, 2012;Mohialdeen et al, 2015;Mulabagal et al, 2013), particulate matter of vehicular exhaust (Fujita et al, 2007;Fushimi et al, 2011;Kleeman et al, 2008;Riddle et al, 2007a,b), engine lubricating oil (Kleeman et al, 2008), road dust (Rogge et al, 2012), smoke particles from biomass burning (Fang et al, 1999), and urban aerosols (Alves et al, 2014;Křůmal et al, 2013;Wang et al, 2006aWang et al, ,b, 2009. They have been used as specific biomarkers of coal and lubricating oil present in motor vehicle exhaust (Kleeman et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Road tunnel, roadside, and urban background measurements of aliphatic compounds in size-segregated particulate matter

Alves

Oliveira

Martins

et al. 2016

Atmospheric Research

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Road tunnel, roadside, and urban background measurements of aliphatic compounds in size-segregated particulate matter

Alves

Oliveira

Martins

et al. 2016

Atmospheric Research

View full text Add to dashboard Cite

“…The CPI values of the seven samples of Bn-1 and one sample of Baraw indicate maturation, while the other samples show a predominance of marine input and /or thermal maturation. The ratios of C 29 20S/ (20S+20R) and ββ/ (ββ+αα) steranes increase with increasing maturity [4,44]. The relationship between C 29 ββ/ (ββ+αα) and C 29 20S/(20S +20R) steranes of the studied samples indicate a peak mature zone (Table -2; Figure-15).…”

Section: Thermal Maturity Assessmentmentioning

confidence: 82%

Organic Geochemistry and Thermal Maturity Assessment of Cretaceous Balambo Formation from Selected Sites, Kurdistan, NE Iraq

Sarraj

Mohialdeen

2021

eijs

View full text Add to dashboard Cite

The Cretaceous Balambo Formation from three sections in Kurdistan Region of Northern Iraq was studied. The selected sections are located in the Zagros Fold -Thrust Belt. Eleven rock samples were analyzed by means of the organic geochemical method, Bitumen extraction method, and gas chromatography/mass spectrometry to determine the bitumen and hydrocarbon content, kerogen types, origin of organic matter, thermal maturity level, and depositional environment. The analyzed samples are considered to have an excellent potential in Baranan-1.G1 and Sazan sections, with poor to fair potential in Baraw section. The Baranan-1.G1 source rocks are of type II kerogen (oil prone), whereas Sazan and Baraw samples are of type II/III (oil/ gas prone). Detailed distribution analysis of biomarkers such as normal alkane, isoprenoids, sterane and terpane was performed on saturated hydrocarbons. The mode of n-alkanes and isoprenoids distribution in all analyzed samples is similar, with a unimodal distribution that indicates non-biodegraded hydrocarbons, with the same range of alkane compounds between C13-C34 alkanes. The results of n-C17, pristane, n-C18 and phytane, and regular steranes show that the source rocks of Balambo Formation in Baranan-1.G1 are mainly rich with algal marine organic matter deposited under a reducing environment, while Baraw and Sazan sections are composed of mixed marine organic matter that refers to terrestrial land plants input deposited under reducing anoxic/dysoxic environments. Thermal maturation appraisal is deduced from Pristane/n-C17 versus Phytane/n-C18 diagram, Carbon Preference Index (CPI), C29 ββ/ (ββ+αα), C29 20S/ (20S +20R), C32 22S/ (22S+22R), and Ts/ (Ts+Tm). All these parameters indicate that the analyzed samples are mature and have entered the oil window (early to peak oil window). Biomarker ratios of C22/C21, C24/C23 and C26/C25, C31R/C30H show that the Balambo Formation is composed mostly of carbonates with less shale beds.

show abstract

“…Multivariate statistical methods have become the focus in the oil-source correlation process [15,16]. As a typical multivariate statistical method, hierarchical cluster analysis (HCA) (also called hierarchical cluster) is considered to be a helpful method in oil-source correlation [17,18]. It is an algorithm that groups similar objects into groups called clusters.…”

Section: Introductionmentioning

confidence: 99%

Geochemical Characteristics and Oil Source Correlation of Minfeng Area, Dongying Depression, China

Jiang

Zhao

et al. 2021

Geofluids

View full text Add to dashboard Cite

The identification of the oil-source correlation plays a significant role in petroleum exploration and development. In this study, we identify the oil-source correlation by a hierarchical cluster analysis method combined with traditional methods. The results shed light on the oil-source correlation in Minfeng area and revealed the oil migration and accumulation process. The crude oil in different structural belts and different horizons has different geochemical characteristics. According to the four types of crude oil and their planner distribution, it was considered that the crude oil mainly migrates along with favorable sand bodies and unconformity surfaces in the lateral direction and then charged and accumulated in the glutenite of Sha3 and Sha4 members since the area from sag to Yan Jia Oil and the gas field was lacking of oil source faults. Further analysis shows that the traps of fault blocks in Yong’anzhen are formed in the same phase, while the crude oil generated in the early stage is charged and accumulated in the fault block of the near source. Along with increasing of the buried depth of source rocks, the overlying source rocks gradually entered into the hydrocarbon generation phase, when crude oil started to charge in the fault blocks farther away.

show abstract

Biomarker characteristics of certain crude oils and the oil-source rock correlation for the Kurdistan oilfields, Northern Iraq

Cited by 29 publications

References 28 publications

Road tunnel, roadside, and urban background measurements of aliphatic compounds in size-segregated particulate matter

Road tunnel, roadside, and urban background measurements of aliphatic compounds in size-segregated particulate matter

Organic Geochemistry and Thermal Maturity Assessment of Cretaceous Balambo Formation from Selected Sites, Kurdistan, NE Iraq

Geochemical Characteristics and Oil Source Correlation of Minfeng Area, Dongying Depression, China

Contact Info

Product

Resources

About