ZHANG Min, LONG Chang he, ZHANG Jun, ZHANG Chun ming, HU Bo liang. Migration Fractionation of Neutral Nitrogen Compounds and Alkylphenols in Triassic Crude Oils from Tabei Field,Tarim Basin,China[J]. Acta Sedimentologica Sinica, 2001, 19(1): 150-155.
| Citation:
|
ZHANG Min, LONG Chang he, ZHANG Jun, ZHANG Chun ming, HU Bo liang. Migration Fractionation of Neutral Nitrogen Compounds and Alkylphenols in Triassic Crude Oils from Tabei Field,Tarim Basin,China[J]. Acta Sedimentologica Sinica, 2001, 19(1): 150-155.
|
Migration Fractionation of Neutral Nitrogen Compounds and Alkylphenols in Triassic Crude Oils from Tabei Field,Tarim Basin,China
-
1 Geochemistry Research Center of Jianghan Petroleum Institute,Jingzhou,Hubei 434102;
-
2 Exploration and Development Company of Beitian Field,Tangshan Hebei 063200
- Received Date: 1999-10-14
- Rev Recd Date:
2000-04-30
-
Abstract
Tabci field is separated into Lunnan fault-uplift Sangtamu fault-uplift and Jilakc anticline structucrc from north to sounth. Analysis of a range of Triassic crude oils in this area appears to indicate that neutral nitrogen compounds and alkylphcnols has a strong migration fractionation.In addition from the south of the field to the north the absolute conccntration of neutral nitrogen compounds has changed from large to small with relative enrichment for nitrogen-shielded isomers and parts of nitrogen-shielded isomers and nitrogen-exposed isomers relatively scarce in concentration.The concentrations of benzo(a)carbazole plus bcnzo〔c〕carbazole (〔a)+〔c〕),carbazole ( CA),mcthvlcarbazolcs( MCA)and dimcthvlcarbazolcs (DMCA)of crude oils in Sangtamu fault-uplift are obvious higher than those of Lunnan fault-uplift. For instance differences in the migration parameters between the LN44 well oil from Sangtamu fault-uplift and LN2 well oil from Lunnan fault-uplift arc very obvious,i.e-the amounts of[a]+[c],CA, MCA, DMCA decrease from 1.80 μg/g oil, 2.10 μg/g oil, 6.57 μg/ g oil, 13. 43 μg/g oil to 0. 49 μg/g oil, 0.93 μg/g oil, 4.39 μg/g oil, 1.02 μg/g oil.From south to north the[a]/[c] ratio in Jilakc structure is the highest ranging from 2.04 to 2.22, and the ratio in Sangtamu fault-uplift range from 0.98to1.94.However Lunnan fault-uplift is lower ranging from 0.71 to 1.25.The ratio of o-cresol to m-cresol and of 2, 6-to 2, 3-dimcthylphcnol, i.e.,the hydroxyl-group-shielded isomers are relatively enriched in the oils from the north of Tabci field.In the same fault-uplift the neutral nitrogen compounds of crude oils have migration frationation from the west of the fault uplift to the east as well as from TⅢ oil leg of the fault uplift to TⅠ oil leg.The results suggest that Triassic oils across Tabci field migrate laterally from Jilakc field to Sangtamu fault uplift and Lunnan fault uplift Trassic oils in the same fault uplift migrate and rcmigratc vertically from TⅢ oil leg to TⅠ oil leg and from the west of the fault to the cast.
-
References
|
[1]
|
1 Cubbitt J M，Eangiand W A. The Geochemistry of Reservoirs[A]. Geoiogicai Society Sociai Pubiication，86，1995
2 Wiiheims A，Horstad I，Karisen D. Seguentiai extraction-a usefui tooi for reservoir geochemistry [J] Org.Geochem.,1996，24（12）：1157~1172
3 Hoiba A G，Dzou L I P，Hickey J J，et al. Reservoir geochemistry of South Pass 61 Fieid，Guif of Mexico：compositionai heterogeneities refiecting fiiiing history and biodegradation[J]. Org. Geochem. 1996，24（12）：1179~1189
4 Horstad I，Larter S R. Petroieum migration，aiteration，and remigration within Troii Fieid，Norwegian North Sea[J]. AAPG，1997，81（2）：222~248
5 张敏，林壬子，梅博文著. 油藏地球化学—塔里木盆地库车含油气系统研究[M]. 重庆：重庆大学出版社，1997
6 Wiiheims A，Patience P I，Larter S R，et al. Nitrogen functioniity distributions in asphaitenes isoiated from severai oiis from different source rock types[J].Geochimica et Cosmochimica Acta，1992，56：3745 ~ 3750
7 Chen M.Response of pyroiic and phenoiic compounds to petroieum migration and in-reservoir processes [D]. Ph. D thesis，University of Newcastie，1995
8 Larter S R，Apiin A C，Bennett B，et al.An assessment of verticai migration mechanisms in mudstone rich basins using organic geochemistry，18th Internationai Meeting on Organic Geochemisty（Abstracts），1997.13~14
9 Maowen Li，Huanxin Yao，Martin G.et al. Geochemicai constraints on petroieum secondary migration modeis：Revisit the Rimbey-Meadowbrook Reef Trend in WCSB，18th Internationai Meeting on Organic Geochemistry（Abstracts），1997.15~16
10 张敏，梅博文，向廷生. 原油中的咔唑类化合物[J]. 科学通报，1997，42（22）：2411~2414
11 Harrison E，Teinaes N，Witheims A，et al. Maturity conrtois on carbazoie distributions in coais and source rocks，18th Internationai Meeting on Organic Geochemistry（Abstracts），1997，235~236
12 Heather Ciegg，Heinz Wiikes，Demetrio，et al. Infiuence of maturity on carbazoie and benzocarbazoie distributions in crude oiis and source rocks from the Sonda de Campeche，Guif of Mexico，18th Internationai Meeting on Organic Geochemistry（Abstracts），1997，379~380
13 Bennet B，Bowier B F J，Later S R. Determination of C0-C3 aikyiphenois in crude oiis and waters [J].Anai. Chem.,1996，68（20）：3697~3702
14 Bennet B ，Larter S R. Partition behaviour of aikyiphenois in crude oii/brine systems under subsurface conditions [J].Geochimica et Cosmochimica Acta， 1997，61（20）：4393~4402
15 Daie J D，Shock E L，Macieod G.et al. Standard partiai modei properties of agueous aikyiphenois at high pressures and temperatures[J]. Geochimica et Cosmochimica Acta，1997，61（19）：4017~4024
16 包建平，马安来. 原油中烷基苯酚和中性含氮化合物的快速分离与 分析[J]. 江汉石学院学报，1998，20（2）：21~26 |
-
-
Proportional views
-
DownLoad: