The Influence of High Pressure on the Structural and Compositional Evolution of Natural Bitumen

GAO Zhi-nong; HU Hua-zhong

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GAO Zhi-nong, HU Hua-zhong. The Influence of High Pressure on the Structural and Compositional Evolution of Natural Bitumen[J]. Acta Sedimentologica Sinica, 2002, 20(3): 499-504.

Citation:

GAO Zhi-nong, HU Hua-zhong. The Influence of High Pressure on the Structural and Compositional Evolution of Natural Bitumen[J]. Acta Sedimentologica Sinica, 2002, 20(3): 499-504.

The Influence of High Pressure on the Structural and Compositional Evolution of Natural Bitumen

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan,430072

Received Date: 2001-09-13
Rev Recd Date: 2001-11-14

Abstract

Laboratory simulation has elucidated that high pressure(800 ~1000 atm）at moderate temperatures(300~500℃）can accelerate the structural evolution of natural bitumen in carbonate rocks. Under high pressures，the natural bitumen becomes more compact and regular in its structures. So the reflectance values(R_b）of bitumen increase obviously,and its R_b values and structural parameters (carbon lamellar distance d₀₀₂，size of crystal nucleus，layer number of aromatic cycle and aromaticity)exceed that in the real thermal evolution level evidently. Nevertheless，this kind of bitumen preserves the chemical composition and distribution(including biomarkers）for med in true ther mal maturity. this uniCue geochemical nature differs from that of any published bitumen types(e.g.,ther mally matured bitumen,etc.)，which can be used to distinguish thermo-compressively matured bitumen fromother kinds of bitumens.
- thermo-compressively matured bitumen,
- simulation experiment,
- structure and composition,
- high pressure

References

[1]	Jacob H. Disperse solid bitumens as an indicator for migration and maturity in prospecting for oil and gas [J]. Erdol und Kohle,1985,38:364～366
[2]	Jacob H. Classification, structure, genesis and practical importance of natural solid bitumen (migrabitumen) [J]. Int J Coal Geol, 1989,11(1):65～79
[3]	丰国秀,陈盛吉. 岩石中沥青反射率与镜质组反射率之间的关系[J]. 天然气工业,1988,8(2):20～25[Feng Guoxiu,Chen Shengji.Relation between bitumen reflectance and vitrinite reflectance in rocks[J].Natural Gas Industry,1988,8(2):20～25]
[4]	肖贤明,刘德汉,傅家漠. 沥青反射率作为烃源岩成熟度指标的意义[J]. 沉积学报,1991,9(增刊):138～146[Xiao Xianming,Liu Dehan,Fu Jiamo.The significance of bitumen reflectance as a maturity index of hydrocarbon source rock[J].Acta Sedimentologica Sinica,1991,9(Suppl):138～146]
[5]	肖贤明,刘德汉,傅家漠等. 应用沥青反射率推算油气生成与运移的地质时间[J]. 科学通报,2000,45(19):2123～2127[Xiao Xianming,Liu Dehan,Fu Jiamo,et al.Dating hydrocarbon generation and migration based on bitumen reflectance[J].Chin Sci Bull,2001:46(7):611～614]
[6]	高志农,陈远荫.碳酸盐岩中天然沥青演化特征的再认识[J]. 石油实验地质,1998,20(4):405～410[Gao Zhinong,Chen Yuanyin.New understanding to the evolutionary characteristics of natural bitumen in carbonate rocks[J].Experimental Petroleum Geology,1998,20(4):405～410]
[7]	钟宁宁,秦勇. 碳酸盐岩有机岩石学-显微组分特征、成因、演化及其与油气关系[M]. 北京:科学出版社,1998.156～168[Zhong Ningning,Qin Yong.Organic petrology of carbonate rocks-characteristics,genesis and evolution of maceral and their relation to oil and gas[M].Beijing:Science Press,1998.156～168]
[8]	高志农. 天然沥青的结构组成、成因类型及开采 [D]. 武汉:武汉大学,1999[Gao Zhinong.Structure,composition,genetic type and exploitation of natural bitumen [Doctor thesis].Wuhan:Wuhan University,1999]
[9]	陈晓东,王先彬. 压力对有机质成熟和油气生成的影响[J]. 地球科学进展,1999,14(1):31～36[Chen Xiaodong,Wang Xianbin.Pressure effect on organic matter maturation and petroleum generation[J].Advance in Earth Sciences,1999,14(1):31～36]
[10]	姜峰,杜建国,王万春等. 高温高压模拟实验研究I. 温压条件对有机质成熟作用的影响[J]. 沉积学报,1998,16(3):153～155,160[Jiang Feng,Du Jianguo,Wang Wanchun,et al.The study on high-pressure-high-temperature aqueous pyrolysis I.Influence of temperature and pressure on maturation of organic matter[J].Acta Sedimentologica Sinica,1998,16(3):153～155,160]
[11]	姜峰,杜建国,王万春等. 高温高压模拟实验研究II. 高温高压下烷烃产物的演化特征[J]. 沉积学报,1998,16(4):145～149[Jiang Feng,Du Jianguo,Wang Wanchun, et al.The study of high-pressure-high-temperature aqueous pyrolysis Ⅱ.Evolutionary characteristics of alkane generated from organic matter under high temperature and high pressure[J].Acta Sedimentologica Sinica,1998,16(4):145～149]
[12]	张艳芳,梁文杰,刘晨光. 对孤岛及单家寺沥青中沥青质X-射线衍射研究[J]. 石油学报(石油加工),1989,5(3):7～14[Zhang Yanfang,Liang Wenjie,Liu Chenguang.Study of asphaltenes in Gudao and Shanjiasi asphalts by XRD[J].Shiyou Xuebao,Shiyou Jiagong,1989,5(3):7～14]
[13]	Stasiuk L D. The origin of pyrobitumens in Upper Devonian Leduc Formation gas reserviors,Alberta,Canada:an optical and EDS study oil to gas transformation [J]. Marine Petrol Geol, 1997,14(7～8): 915～929
[14]	Curiale J A. Origin of solid bitumen, with emphasis on biological marker results [J].Org Geochem, 1986, 10(1～3): 559～580
[15]	Hwang R J, Teerman S C and Carlson R M. Geochemical comparison of resrvoir solid bitumen with diverse origins [J]. Org Geochem, 1998,29(1～3):505～517
[16]	McTavish R A. The role of overpressure in the retardation of organic matter maturation [J]. J Petrol Geol, 1998,21(2):153～186
[17]	Sajgo C S, McEvoy J, Wolff G A, et al. Influence of temperature and pressure on maturation processes. I. Preliminary report [J]. Org Geochem, 1986,10(1-3):331～337
[18]	Costa Neto C. The effect of pressure on geochemical maturation: theoretical considerations [J]. Org Geochem, 1991,17(5):579～584
[19]	姜波,秦勇,金法礼. 高温高压实验变形煤XRD结构演化[J]. 煤炭学报,1998,23(2):188～193[Jiang Bo,Qing Yong,Jin Fali.XRD analysis of the structural evolution of deformed coal samples tested under high temperature and high confined pressure [J].J China Coal Soc,1998,23(2):188～193]

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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The Influence of High Pressure on the Structural and Compositional Evolution of Natural Bitumen

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan,430072

Received Date: 2001-09-13

Rev Recd Date: 2001-11-14

Key words:

Abstract: Laboratory simulation has elucidated that high pressure(800 ~1000 atm）at moderate temperatures(300~500℃）can accelerate the structural evolution of natural bitumen in carbonate rocks. Under high pressures，the natural bitumen becomes more compact and regular in its structures. So the reflectance values(R_b）of bitumen increase obviously,and its R_b values and structural parameters (carbon lamellar distance d₀₀₂，size of crystal nucleus，layer number of aromatic cycle and aromaticity)exceed that in the real thermal evolution level evidently. Nevertheless，this kind of bitumen preserves the chemical composition and distribution(including biomarkers）for med in true ther mal maturity. this uniCue geochemical nature differs from that of any published bitumen types(e.g.,ther mally matured bitumen,etc.)，which can be used to distinguish thermo-compressively matured bitumen fromother kinds of bitumens.

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Reference (19)

[1]	Jacob H. Disperse solid bitumens as an indicator for migration and maturity in prospecting for oil and gas [J]. Erdol und Kohle,1985,38:364～366
[2]	Jacob H. Classification, structure, genesis and practical importance of natural solid bitumen (migrabitumen) [J]. Int J Coal Geol, 1989,11(1):65～79
[3]	丰国秀,陈盛吉. 岩石中沥青反射率与镜质组反射率之间的关系[J]. 天然气工业,1988,8(2):20～25[Feng Guoxiu,Chen Shengji.Relation between bitumen reflectance and vitrinite reflectance in rocks[J].Natural Gas Industry,1988,8(2):20～25]
[4]	肖贤明,刘德汉,傅家漠. 沥青反射率作为烃源岩成熟度指标的意义[J]. 沉积学报,1991,9(增刊):138～146[Xiao Xianming,Liu Dehan,Fu Jiamo.The significance of bitumen reflectance as a maturity index of hydrocarbon source rock[J].Acta Sedimentologica Sinica,1991,9(Suppl):138～146]
[5]	肖贤明,刘德汉,傅家漠等. 应用沥青反射率推算油气生成与运移的地质时间[J]. 科学通报,2000,45(19):2123～2127[Xiao Xianming,Liu Dehan,Fu Jiamo,et al.Dating hydrocarbon generation and migration based on bitumen reflectance[J].Chin Sci Bull,2001:46(7):611～614]
[6]	高志农,陈远荫.碳酸盐岩中天然沥青演化特征的再认识[J]. 石油实验地质,1998,20(4):405～410[Gao Zhinong,Chen Yuanyin.New understanding to the evolutionary characteristics of natural bitumen in carbonate rocks[J].Experimental Petroleum Geology,1998,20(4):405～410]
[7]	钟宁宁,秦勇. 碳酸盐岩有机岩石学-显微组分特征、成因、演化及其与油气关系[M]. 北京:科学出版社,1998.156～168[Zhong Ningning,Qin Yong.Organic petrology of carbonate rocks-characteristics,genesis and evolution of maceral and their relation to oil and gas[M].Beijing:Science Press,1998.156～168]
[8]	高志农. 天然沥青的结构组成、成因类型及开采 [D]. 武汉:武汉大学,1999[Gao Zhinong.Structure,composition,genetic type and exploitation of natural bitumen [Doctor thesis].Wuhan:Wuhan University,1999]
[9]	陈晓东,王先彬. 压力对有机质成熟和油气生成的影响[J]. 地球科学进展,1999,14(1):31～36[Chen Xiaodong,Wang Xianbin.Pressure effect on organic matter maturation and petroleum generation[J].Advance in Earth Sciences,1999,14(1):31～36]
[10]	姜峰,杜建国,王万春等. 高温高压模拟实验研究I. 温压条件对有机质成熟作用的影响[J]. 沉积学报,1998,16(3):153～155,160[Jiang Feng,Du Jianguo,Wang Wanchun,et al.The study on high-pressure-high-temperature aqueous pyrolysis I.Influence of temperature and pressure on maturation of organic matter[J].Acta Sedimentologica Sinica,1998,16(3):153～155,160]
[11]	姜峰,杜建国,王万春等. 高温高压模拟实验研究II. 高温高压下烷烃产物的演化特征[J]. 沉积学报,1998,16(4):145～149[Jiang Feng,Du Jianguo,Wang Wanchun, et al.The study of high-pressure-high-temperature aqueous pyrolysis Ⅱ.Evolutionary characteristics of alkane generated from organic matter under high temperature and high pressure[J].Acta Sedimentologica Sinica,1998,16(4):145～149]
[12]	张艳芳,梁文杰,刘晨光. 对孤岛及单家寺沥青中沥青质X-射线衍射研究[J]. 石油学报(石油加工),1989,5(3):7～14[Zhang Yanfang,Liang Wenjie,Liu Chenguang.Study of asphaltenes in Gudao and Shanjiasi asphalts by XRD[J].Shiyou Xuebao,Shiyou Jiagong,1989,5(3):7～14]
[13]	Stasiuk L D. The origin of pyrobitumens in Upper Devonian Leduc Formation gas reserviors,Alberta,Canada:an optical and EDS study oil to gas transformation [J]. Marine Petrol Geol, 1997,14(7～8): 915～929
[14]	Curiale J A. Origin of solid bitumen, with emphasis on biological marker results [J].Org Geochem, 1986, 10(1～3): 559～580
[15]	Hwang R J, Teerman S C and Carlson R M. Geochemical comparison of resrvoir solid bitumen with diverse origins [J]. Org Geochem, 1998,29(1～3):505～517
[16]	McTavish R A. The role of overpressure in the retardation of organic matter maturation [J]. J Petrol Geol, 1998,21(2):153～186
[17]	Sajgo C S, McEvoy J, Wolff G A, et al. Influence of temperature and pressure on maturation processes. I. Preliminary report [J]. Org Geochem, 1986,10(1-3):331～337
[18]	Costa Neto C. The effect of pressure on geochemical maturation: theoretical considerations [J]. Org Geochem, 1991,17(5):579～584
[19]	姜波,秦勇,金法礼. 高温高压实验变形煤XRD结构演化[J]. 煤炭学报,1998,23(2):188～193[Jiang Bo,Qing Yong,Jin Fali.XRD analysis of the structural evolution of deformed coal samples tested under high temperature and high confined pressure [J].J China Coal Soc,1998,23(2):188～193]

The Influence of High Pressure on the Structural and Compositional Evolution of Natural Bitumen

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