Fractionated aromatic petroleums and the generation of gas-condensates

Thompson, K. F. M.

doi:10.1016/0146-6380(87)90011-8

Cited by 368 publications

(150 citation statements)

References 7 publications

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“…Skład węglowodorów w przykładowej surowej ropie w zakresie lekkich węglowodorów do n-C 10 (cykloheksan + … + metylocykloheksan) = (cykloheksan + 2-metyloheksan + 1,1-dimetylocyklopentan + 3-metyloheksan + 1-cis-3-dimetylocyklopentan + 1-trans-3-dimetylocyklopentan + 1-trans-2-dimetylocyklopentan + n-heptan + metylocykloheksan) z wyłączeniem 1-cis-2-dimetylocyklopentanu do określenia stopnia degradacji. Procesowi wymywania wodą towarzyszy ubytek niżejcząsteczkowych węglowodo-rów aromatycznych (benzen, toluen, ksyleny), co powoduje obniżenie wartości wskaźników A, B i X. Ewaporatowa frakcjonacja wpływa na wartości wskaźników B i F, dając w przypadku rop B > 1, a F < 0,5 [9]. Odwrotną zależność obserwuje się dla kondensatów i gazów [6].…”

Section: Podstawy Teoretyczne Analizy Rop Naftowychunclassified

Oznaczanie jakościowe i ilościowe (GC-FID) wybranych składników ropy naftowej

Bieleń

Janiga

2016

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Oznaczanie jakościowe i ilościowe (GC-FID) wybranych składników ropy naftowejZmodyfikowano metodę GC-FID oznaczania ilościowego składników ropy naftowej. Dotychczasowa metodyka wymagała modyfikacji, w tym przede wszystkim dobrania innego rozpuszczalnika do próbek ropy naftowej. Do tej pory wykorzystywano disiarczek węgla (CS 2 ), który jest związkiem silnie kancerogennym, a więc jednym z powodów zmiany rozpuszczalnika były aspekty zdrowotne. Rozszerzono stosowaną metodę o analizę ilościową wybranych komponentów występujących w ropie naftowej. Opracowano analizę ilościową wybranych n-alkanów i izoalkanów oraz niskowrzących związków aromatycznych (BTX). Dobrano program temperaturowy w celu analizy standardów, które posłużyły do utworzenia krzywych kalibracyjnych. Na podstawie tychże krzywych oznaczono wybrane związki chemiczne w sposób ilościowy w około 10 ropach naftowych.Słowa kluczowe: ropa naftowa, n-alkany, izoalkany, BTX. Qualitative and quantitative determination (GC-FID) of selected components of crude oilGC-FID method for the quantification of crude oil components was modified. Previous methodology required modification and a new solvent selection for oil samples. Carbon disulfide (CS 2 ) had been used so far and because of it's highly carcinogenic properties, the author proposed solvent replacement. The method was extended to be used for the quantitative analysis of selected components present in crude oil. Quantitative analysis of the selected n-alkane, iso-alkanes and low-boiling aromatics (BTX) was developed. A temperature program was adjusted for the analysis of standards which were used for the creation of calibration curves. Quantitative analysis of selected compounds was determined based on the curves in about 10 crude oil samples.

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Section: Podstawy Teoretyczne Analizy Rop Naftowychunclassified

Oznaczanie jakościowe i ilościowe (GC-FID) wybranych składników ropy naftowej

Bieleń

Janiga

2016

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“…8) are 0.80 and 0.82. The lat ter in com bi nation with the 1.24 value of the to lu ene/n-heptane ra tio in di cates Num bers re fer to car bon at oms in n-alkane chain, CH -cyc lo hex ane, DMB -dimethylbutane, DMCPdimethylcyclopentane, DMP -dimethylpentane, ECP -ethylcyclopentane, MCH -methylcyclohexane, MHmethylhexane, MCP -methylcyclopentane, MP -methylpentane, TMB -trimethylbutane, m -meta, p -para evap o ra tive frac tion ation pro cesses in the Cre ta ceous oil ac cumu la tion (Thomp son, 1987). Low val ues of pristane/n-C 17 H 36 and phytane/n-C 18 H 38 ra tios (Ta ble 4), re flect ing the low con cen trations of isoprenoids in re la tion to n-al kanes, show that the oils did not un dergo any sig nif i cant biodegradation.…”

Section: Geochemical Characteristics Of Oils and Oil-oil Correlationmentioning

confidence: 99%

Origin and migration of oil from the Ukrainian Outer Carpathians to their Mesozoic basement: the case of the Lopushna traps

Radkovets¹,

Kotarba

Koltun³

et al. 2015

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1 Na tional Acad emy of Sci ences of Ukraine, In sti tute of Ge ol ogy and Geo chem is try of Com bus ti ble Min er als, Naukova 3a, 79060 Lviv, Ukraine The Lopushna oil field has been dis cov ered in Mesozoic-Paleogene strata of the plat form base ment be neath the Ukrai nian Outer (Flysch) Carpathians. Oils from two main ac cu mu la tions, oc cur ring in Up per Cre ta ceous sand stone and Up per Ju rassic lime stone res er voirs, have been ana lysed in or der to iden tify their or i gin and re la tion to the known pe tro leum sys tems in the re gion of the Outer Carpathians and the base ment of the Carpathian Foredeep. Re sults of geo chem i cal in ves ti ga tions of oils, in clud ing biomarker and iso to pic data, show a good cor re la tion with oils ac cu mu lated in Carpathian flysch strata. The oils are low-sul phur and did not un dergo sig nif i cant deg ra da tion. They were gen er ated from Type II or II/III kerogen, de posited in anoxic en vi ron ments in clastic sed i ments. Gen er a tion oc curred at the peak of "oil win dow", prob a bly in the tem per ature range of 122 to 126 o C. The pres ence of oleanane in di cates Cre ta ceous or youn ger source rocks. Good cor re la tion of biomarker and iso to pic data with the or ganic mat ter dis persed in the Oligocene Menilite Beds oc cur ring at the top of the Carpathian flysch suc ces sion al lowed iden ti fi ca tion of these as source rocks for oils of the Lopushna field, which thus can be re garded as an oil fam ily of the Outer Carpathians. The mi gra tion dis tance for both the Lopushna oils and oils ac cu mu lated in the Carpathian flysch strata was sim i lar. A num ber of sub-ver ti cal dis lo ca tions, along which the sub sided flysch strata oc cur at the same depth level as the Ju ras sic and Cre ta ceous rocks of the plat form, can be as sumed as pos si ble mi gra tion pathways from the ma ture source rocks of the Oligocene Menilite Beds of the Boryslav-Pokuttya, Skyba or Krosno units to the Lopushna type traps, which sug gests the pos si bil ity of ex is tence of other hy dro car bon ac cu mu la tions of this type. The Lopushna field so far is unique in con tain ing this type of oil found in the base ment of the Ukrai nian Carpathian Foredeep.

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“…Snowdon et al (1982) found the immature condensates directly derived from the macerals of the terringenous higher plants such as dispersed resinite in Mackenzie basin, Canada. It is discovered by Thompson (1987;1988) that the natural gases generated at the later period could dissolve the early existed oils and carry them to the shallow traps along the faults to form new oil and gas accumulations and called it "evaporative fractionation". Since then, the evaporative fractionation has been studied by quantities of researchers through both experimental analysis and case studies (Dzou et al, 1993;Ma et al, 1995;Curiale et al, 1996;Zhang, 2000;Zhu et al, 2003;Fu et al, 2003;He et al, 2004;Chang et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Geochemical Characteristics of the Condensates and Their Evaporative Fractionation in Kuqa Depression of Tarim Basin, NW China

Gong

Yang

et al. 2014

Energy Exploration & Exploitation

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After analyzing 21 samples in 12 oil and gas fields in Kuqa depression, two genetic types of condensates are identified. One type is the sapropelic condensate mainly derived from the Upper-Middle Triassic lacustrine source rocks which has a relatively higher content of C 5-7 n-alkanes (>35%) and lower methylcyclohexane content (<48%), pristane/phytane ratio (0.95~1.56) and carbon isotope values (-27.8‰ ~ -32.3‰); the other type is the coal-derived condensate derived from the Middle-Lower Jurassic terringenous source rocks which has a lower C5-7 n-alkanes content (28% in average) and relatively higher content of methylcyclohexane (>50%), pristane/phytane ratio (1.70 4.62) and carbon isotope values (-26.2‰ in average). Based on a comprehensive study on the n-alkanes, light hydrocarbons and carbon isotopes, it is found the condensates in Kuqa depression have widely experienced evaporative fractionation with a high aromaticity (>0.8) and their high molecules suffered loss. With the evaporative fractionation becoming more significant, the bulk carbon isotopic values of the condensates become heavier, indicating the multistages of the evaporative fractionation. The structural or lithologic traps in the Tertiary and the Jurassic tend to be favorable exploration targets for future oil exploration in Kuqa depression.

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Fractionated aromatic petroleums and the generation of gas-condensates

Cited by 368 publications

References 7 publications

Oznaczanie jakościowe i ilościowe (GC-FID) wybranych składników ropy naftowej

Oznaczanie jakościowe i ilościowe (GC-FID) wybranych składników ropy naftowej

Origin and migration of oil from the Ukrainian Outer Carpathians to their Mesozoic basement: the case of the Lopushna traps

Geochemical Characteristics of the Condensates and Their Evaporative Fractionation in Kuqa Depression of Tarim Basin, NW China

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