天然气地球科学

• 天然气地质学 • 上一篇    下一篇

东海盆地西湖凹陷孔雀亭气区气侵条件及主控因素

苏奥,陈红汉,马玉华,詹海勇,杨文帅   

  1. 1.中国石油东方地球物理公司研究院,河北 涿州 072750; 2.中国地质大学(武汉)构造与油气资源教育部重点实验室,湖北 武汉 430074;
    3.中国石油新疆油田分公司石西油田作业区,新疆 克拉玛依 834000;
    4.中国石油寰球工程项目管理(北京)有限公司,北京 100027
  • 收稿日期:2014-04-01 修回日期:2014-06-13 出版日期:2015-02-10 发布日期:2015-02-10
  • 作者简介:苏奥(1989-),男,湖北荆州人,助理工程师,硕士,主要从事盆地流体地质、油气成藏及地球化学研究. E-mail:suao446@163.com.
  • 基金资助:

    “十二五”国家重大科技专项“中国近海新生代盆地演化及油气富集机理”(编号:2011ZX05023-004-010)资助.

Geologic Conditions and Main Controlling Factors of Gas Washing in Kongqueting Region in Xihu Depression,Eastern Sea Basin

SU Ao,CHEN Hong-han,MA Yu-hua,ZHAN Hai-yong,YANG Wen-shuai   

  1. 1.Geophysical Research Institute,BGP,CNPC,Zhuozhou  072750,China;
    2.Key Lab of “Tectonics and Petroleum Resource” of Educational Ministry,China University of Geosciences,Wuhan 430074,China;
    3.Xinjiang Oilfield Company Shixi Oilfield Operations Area,CNPC,Karamay,834000,China;
    4.Huan Qiu Project Management(Beijing) Co.,Ltd.3,CNPC,Beijing 100027,China
  • Received:2014-04-01 Revised:2014-06-13 Online:2015-02-10 Published:2015-02-10

摘要:

西湖凹陷曾发生过大规模的气侵分馏作用,但目前仅局限于定性描述。以平湖构造带孔雀亭气区为研究对象,利用流体包裹体和原油正构烷烃测试等手段,结合该区油气地球化学性质和断裂构造特征,研究了孔雀亭气区气侵条件及主控因素,并讨论了气侵分馏作用对油气藏的影响。结果表明,该区高有机质丰度、生气持续的煤系源岩提供了充足气源,数量众多的断裂发育以及油气充注时间的良好匹配等地质条件,使得孔雀亭气区能够大规模发生气侵分馏作用。气侵分馏定量计算表明研究区各井原油的正构烷烃损失率Q值介于35.3%~97.1%之间,折点碳数介于18~27之间。气源距离和垂向深度共同控制了气侵分馏的强度,而且前者比后者表现出更强力的控制。气侵分馏不仅使得孔雀亭气区各井沿着气侵方向其含气层数和凝析气层数比值逐渐减小,而且导致该区呈现出“上油下气”的垂向分布样式以及低蜡质凝析油与伴生的高蜡质油等复杂原油类型的形成。
 

关键词: 气侵, 条件, 主控因素, 西湖凹陷, 孔雀亭气区

Abstract:

There was extensive evaporative fractionation effect in Xihu Depression,Eastern Sea Basin.However,most of the previous study on the gas washing is qualitative description.Taking Kongqueting region in Pinghu structural belt as an example,based on the geochemical characteristics and fracture characteristic,this paper discussed geologic conditions and main controlling factors of gas washing and analyzed effect of hydrocarbon reservoir by fluid inclusion system analysis technology and n-alkanes testing method.These findings suggest that coal measures which can generate gas continuously have abundant organic matter and provide good source rocks.Numerous faults and good match between oil and gas filling time result in the occurrence of gas washing in the Kongqueting region.Quantitative calculation of gas washing fractionation effect show that n-alkane loss rate of crude oil in the wells in the study area is 35.3% to 97.1% and break number is 18 to 27.Source distance and vertical depth control strength of gas washing fractionation effect.Besides,the former is more powerful controlling function than the latter.Gas washing fractionation effect not only makes gas layers and ratio of condensate gas layers decrease along the direction of the gas invasion,but also leads to the pattern of oil reservoir above gas reservoir and formation of condensate with low wax content and condensate gas with high wax content.

Key words: Gas washing, Geologic conditions, Controlling factors, Xihu Depression, Kongqueting region

中图分类号: 

  • TE122.1
[1]Silverman S.Migration and segregation of oil and gas[M]//Young A,Galley G.Fluids in Subsurface Environments.AAPG Memoir 4.Tulsa:AAPG,1965:53-65.
[2]Thompson K F M.Gas-condensate migration and oil fractionation in deltaic systems[J].Marine and Petroleum Geology,1988,5(3):237-246.
[3]Meulbroek P.Hydrocarbon Phase Fractionation in Sedimentary Basins[D].Ithaca,New York:Cornell University,1997:160-166.
[4]Zhu Yangming,Su Aiguo,Liang Digang.et al.Evaporative fractionation of oil and gas reservoir in Nanbaxian area of northern Qaidam Basin[J].Acta Petrolei Sinica,2003,24(4):31-35.[朱扬明,苏爱国,梁狄刚,等.柴达木盆地北缘南八仙油气藏的蒸发分馏作用[J].石油学报,2003,24(4):31-35.]
[5]Zhai Guangming,Wang Jianjun.Analysis of petroleum geology in Tazhong region[J].Acta Petrolei Sinica,1999,20(4):1-6.[翟光明,王建君.对塔中地区石油地质条件的认识[J].石油学报,1999,20(4):1-6.]
[6]Yang Chupeng,Geng Ansong,Liao Zewen,et al.Quantitative assessment of gas washing of oils in the Tazhong area of the Tarim Basin,Northwest China[J].Science China:Serial D,2009,39(1):51-60.[杨楚鹏,耿安松,廖泽文,等.塔里木盆地塔中地区油藏气侵定量评价[J].中国科学:D辑,2009,39(1):51-60.]
[7]Huang Haiping,Zhang Shuichang,Su Aiguo.Geochemical processes in petroleum migration and accumulation[J].Petroleum Geology & Experiment,2001,23(3):278-284.[黄海平,张水昌,苏爱国.油气运移聚集过程中的地球化学作用[J].石油实验地质,2001,23(3):278-284.]
[8]Fu Ning,Li Youchuan,Chen Guihua,et al.Pooling mechanisms of “evaporating fractionation” of oil and gas in the Xihu Depression,East China Sea[J].Petroleum Exploration and Development,2003,30(2):39-42.[傅宁,李友川,陈桂华,等.东海西湖凹陷油气“蒸发分馏”成藏机制[J].石油勘探与开发,2003,30(2):39-42.]
[9]Su Ao,Chen Honghan,Wang Cunwu,et al.Genesis and maturity identification of oil and gas in the Xihu Sag,East China Sea Basin[J].Petroleum Exploration and Development,2013,40(5):521-527.[苏奥,陈红汉,王存武,等.东海盆地西湖凹陷油气成因及成熟度判别[J].石油勘探与开发,2013,40(5):521-527.]
[10]Liang Jianshe,Wang Qi,Hao Lewei,et al.Evolution of diagenetic environments for Oligocene Huagang Formation sandstone in Xihu Sag[J].Natural Gas Geoscience,2012,23(4):673-680.[梁建设,王琪,郝乐伟,等.西湖凹陷渐新统花港组储层砂岩成岩环境演化探讨[J].天然气地球科学,2012,23(4):673-680.]
[11]Cai Quansheng,Hu Mingyi,Hu Zhonggui,Reservoir characteristics and evolution of diagenetic porosity of Huagang Formation of Paleogene in the central anticlinal belt of Xihu Sag,Donghai Basin[J].Natural Gas Geoscience,2013,24(4):733-740.[蔡全升,胡明毅,胡忠贵,等.东海盆地西湖凹陷中央隆起带古近系花港组储层特征及成岩孔隙演化研究[J].天然气地球科学,2013,24(4):733-740.]
[12]Hao Lewei,Liu Chang,Wang Qi,et al.Provenance characteristics of Huagang Formation(Paleogene)in Xihu Sag,East China Sea[J].Natural Gas Geoscience,2011,22(2):315-323.[郝乐伟,刘畅,王琪,等.西湖凹陷古近系花港组物源区特征分析[J].天然气地球科学,2011,22(2):315-323.]
[13]Su Ao,Chen Honghan,Wang Cunwu,et al.Source of natural gas in Xihu Depression of the East China Sea Basin[J].Geological Science and Technology Information,2014,33(1):157-162.[苏奥,陈红汉,王存武,等.东海盆地西湖凹陷天然气来源探讨[J].地质科技情报,2014,33(1):157-162.]
[14]Meulbroek P,Cathles L M,Whelan J.Phase fractionation at South Eugene Island Block 330[J].Organic Geochemistry,1998,29(1-3):223-239.
[15]Ye Jun,Guo Dixiao.Geochemical characters of the natural gas in Xihu Depression,the East China Sea[J].Petroleum Geology & Experiment,1996,18(2):174-181,145.[叶军,郭迪孝.东海西湖凹陷天然气地化特征[J].石油实验地质,1996,18(2):174-181,145].
[16]Jia Jianyi,Xu Xuehao,Sun Boqiang.Oil/gas geochemical characteristics in the Xihu Sag of the East China Sea[J].Offshore Oil,2000,20(2):1-7.[贾健谊,须雪豪,孙伯强.东海西湖凹陷原油与天然气的地球化学特征[J].海洋石油,2000,20(2):1-7.]
[17]Zhang Jianpei.Fault system and its genetic mechanism in the Pinghu slope of the Xihu Sag in the East China Sea Shelf Basin[J].2013,48(1):291-303.[JP3][张建培.东海西湖凹陷平湖斜坡带断裂系统特征及成因机制探讨[J].地质科学,2013,48(1):291-303.]
[18]Kissin Y.Catagenesis and composition of petroleum:origin of n-alkanes and isoalkanes in petroleum crude oils[J].Geochimica et  Cosmochimica Acta,1987,51(9):2445-2457.
[19]Rassamdana H,Farhani M,Dabir B,et al.Asphalt flocculation and deposition.V:Phase behavior in miscible and immiscible injections[J].Energy Fuels,1999,13(1):176-187.
[20]Losh S,Cathles L,Meulbroek P.Gas washing of oil a long a regional transect,off shore Louisiana [J].Organic Geochemistry,2002,33(6):655-663.
[21]Bao Jianping,Zhu Cuishan,Ma Anlai,et al.Quantitative study of biomarker composition in biodegrated oils[J].Journal of Jianghan Petroleum Institute,2002,24(2):22-26.[包建平,朱翠山,马安来,等.生物降解原油中生物标志物组成的定量研究[J].江汉石油学院学报,2002,24(2):22-26.]
 
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