PRELIMINARY STUDY OF FORMATION POROSITY THERMOCOMPRESSION SIMULATION EXPERIMENT OF HYDROCARBON GENERATION AND EXPULSION
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摘要: 热压生排烃模拟实验是研究烃源岩热演化机理的重要手段之一。现有模拟实验技术主要强调的是温度、压力和时间,忽视了地层流体压力、生烃空间、高温高压地层水及初次排烃等重要影响因素。利用自行研制的地层孔隙热压模拟实验仪,同时考虑影响烃源岩生排烃过程的多种因素,建立地层孔隙热压生排烃模拟实验技术,对比研究发现:流体压力、生烃空间和高温高压液态水跟温度、时间一样自始至终影响着沉积有机质的生烃演化,只是在不同演化阶段其影响程度和表现形式不同。在低成熟—成熟阶段,地层孔隙—高温高压液态水热体系对Ⅰ型干酪根黑色泥岩成烃过程的影响主要表现为延缓了油的生成,抑制了气体的生成,改变了干酪根的组成特征,提高了烃源岩的生油潜力。Abstract: Thermocompression simulation experiment of hydrocarbon generation and expulsion is one of the main instruments for the study of hydrocarbon thermal evolution mechanism.The existing simulation methods consider more about temperature,pressure and time rather than pore fluid pressure,hydrocarbon generation room,high temperature and pressure liquid water as well as the first hydrocarbon expulsion.With self-developed formation porosity thermocompression simulation experiment instrument,taking into consideration of various factors,the author has set up a formation porosity thermocompression simulation experiment of hydrocarbon generation and expulsion.It has been found out,as the same as temperature and time,pressure,hydrocarbon generation room as well as high temperature and pressure liquid water affect the evolution of hydrocarbon generation from sedimentary organic ma-tters through the whole process,only different in forms and manifestations during different stages of evolution.From low-mature to mature stage,the main impact of formation porosity high temperature and pressure liquid water system on hydrocarbon generation from type Ⅰ kerogen black mud are de-laying oil generation,inhibiting gas generation,changing kerogen composition characteristics and en-hancing the hydrocarbon generation potential of source rocks.
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[1] Tissot B P,Welte D H.Petroleum formation and occurrence[M].New York:Springer Verlag,1984.223 [2] Landais P,Michels R,Elie M.Are time and temperature the only constraints to the simulation of organic matter maturation[J].Org Geochem,1994,22:617~630 [3] Price L C,Wenger L M.The influence of pressure on petroleum generation and maturation as suggested by aqueous pyrolysis[J].Org Geochem,1992,19:141~159 [4] 姜峰,杜建国,王万春等.高温超高压模拟实验研究--高温高压下烷烃产物的演化特征[J].沉积学报,1998,16(4):145~148 [5] 张文正,斐戈.烃源岩排烃生成与演化的热压模拟实验研究[J].石油勘探与开发,1991,18(3):7~15 [6] 邹艳荣,帅燕华,孔枫等.油气生成过程实验研究的思考与展望[J].石油实验地质,2004,26(4):375~381 [7] 王兆明,罗哓荣,陈瑞银等.有机质热演化过程中地层压力的作用与影响[J].地球科学进展,2006,21(1):39~46 [8] 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 [9] 大庆石油学院.有机质地化演化模拟实验装置[P].中国,CN 87 100 918.1988 [10] 石油大学(北京)盆地与油藏研究中心,石油天然气成藏机理教育部重点实验室.压实成岩作用与油气生成和排驱模拟实验装置[P].中国,CN 01 264 260.6.2002 [11] 石油大学(北京)盆地与油藏研究中心,石油天然气成藏机理教育部重点实验室.油气生成、运移和聚集模拟实验装置[P].中国,CN 01 136 031.3.2003 [12] 杜洪文,方伟,霍秋立等.高温高压热模拟装置的研制[J].石油仪器,2001,15(6):16~19 [13] 刘全有,刘文汇,王晓锋等.不同烃源岩实验评价方法的对比[J].石油实验地质,2007,29(1):88~94 [14] 秦建中,李志明,刘宝泉等.海相优质烃源岩形成重质油与固体沥青潜力分析[J].石油实验地质,2007,29(3):280~285 [15] 郑伦举,王强.海相古油藏及可溶有机质再生烃气能力研究[J].石油实验地质,2008,30(4):390~395 [16] 刘光祥.塔里木盆地S74井稠油热模拟实验研究(二)-沥青生烃潜力探讨[J].石油实验地质,2008,30(4):382~385 [17] 关德范,王国力,张金功等.成盆成烃成藏理论思维:从盆地到油气藏[M].北京:石油工业出版社,2004 [18] 吕秀阳,何龙,郑赞胜等.近临界水中的绿色化工过程[J].化工进展,2003,22(5):477~481 -
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