“小而肥”油藏油水分布特征及成因探讨——以海拉尔贝尔凹陷贝中油田为例
摘要
针对"小而肥"油田油气成藏特点,以贝尔凹陷贝中油田为例,在对其探评井及开发井测井曲线、地震解释成果、测井解释资料、试油试采动态开发数据研究整理的基础上,结合其断裂系统拆分结果,通过典型实例分析和油藏解剖得知,贝中油田南一段主力油层在"满凹含油"的基础上,形成含油性差区或水区的主要控制因素为:断层断失作用造成目的层内主力油层缺失,造成断层附近见水;受晚期反转断层调整作用导致部分南一段油调整到南二段或大一段储层中形成次生油藏,造成主力油层反转断层附近含油性较差;开发过程中油动态运聚过程使构造低部位快速见水。
According to characteristics of oil and gas accumulation in "small and fat" oil reservoir,the authors take Beizhong oil field of Beier depression as an example.The typical examples and reservoir sections are analyzed base on the study of logging curves,results of seismic interpretation,logging interpretation data and dynamic development of test data on oil production of exploration-evaluation wells and development well,combined with faults system split results in Beizhong field.On the basis of "sag-wide oil bearing" in Nanyi(the first member of Nantun Formation) major reservoir of Beizhong oil field,the factors of forming poor oil areas or water areas are loss of major reservoirs within the target layer by the function of fault,causing water areas formed near the faults;adjustment by later reverse faults,oil from Nanyi Layer adjust to Naner(the second member of Nantun Formation) layer or Dayi(the first member of Damoguaihe Formation) Layer formed secondary reservoirs,and causing poor oil areas formed near the reveres faults within main reservoir;oil dynamics migrations and accumulation during oil development,causing quickly water occurrence in lower positions.
According to characteristics of oil and gas accumulation in "small and fat" oil reservoir,the authors take Beizhong oil field of Beier depression as an example.The typical examples and reservoir sections are analyzed base on the study of logging curves,results of seismic interpretation,logging interpretation data and dynamic development of test data on oil production of exploration-evaluation wells and development well,combined with faults system split results in Beizhong field.On the basis of "sag-wide oil bearing" in Nanyi(the first member of Nantun Formation) major reservoir of Beizhong oil field,the factors of forming poor oil areas or water areas are loss of major reservoirs within the target layer by the function of fault,causing water areas formed near the faults;adjustment by later reverse faults,oil from Nanyi Layer adjust to Naner(the second member of Nantun Formation) layer or Dayi(the first member of Damoguaihe Formation) Layer formed secondary reservoirs,and causing poor oil areas formed near the reveres faults within main reservoir;oil dynamics migrations and accumulation during oil development,causing quickly water occurrence in lower positions.
引文
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[2]刘志宏,万传彪,任延广,等.海拉尔盆地乌尔逊—贝尔凹陷的地质特征及油气成藏规律[J].吉林大学学报:地球科学版,2006,36(4):527-534.Liu Zhi-hong,Wan Chuan-biao,Ren Yan-guang,et al.Geological Features and the Rule of Oil and GasAccumulation of Urxun-Beier Depression in HailaerBasin[J].Journal of Jilin University:Earth ScienceEdition,2006,36(4):527-534.
[3]秦雁群,邓宏文,丁寒生.乌尔逊—贝尔凹陷构造调节带特征、成因机制及其地质意义[J].现代地质,2009,23(5):872-879.Qin Yan-qun,Deng Hong-wen,Ding Han-sheng.Characteristic,Geologic Meaning and FormingMechanisms on the Structural Accommodation Zonesin Wuerxun-Beier Depression[J].Geoscience,2009,23(5):872-879.
[4]曹瑞成,曲希玉,文全,等.海拉尔盆地贝尔凹陷储层物性特征及控制因素[J].吉林大学学报:地球科学版,2009,39(4):23-30.Cao Rui-cheng,Qu Xi-yu,Wen Quan,et al.PhysicalProperties and Control Factors of Reservoir in BeierDepression,Halaer Basin[J].Journal of JilinUniversity:Earth Science Edition,2009,39(4):23-30.
[5]Nbahhnkob B N,黄忠廉.储集层和圈闭中油气运移与聚集的可能机理[J].国外油气勘探,1996,8(3):308-310.Nbahhnkob B N,Huang Zhong-lian.Reservoir and inthe Trap of Petroleum Migration and AccumulationMechanism[J].Foreign Oil and Gas Exploration,1996,8(3):308-310.
[6]付广,于丹苏.仁诺尔断裂垂向封闭时空分布及其与油气聚集的关系[J].石油学报,2005,26(6):40-45.Fu Guang,Yu Dan-su.Time-Space Distribution ofVertical Seal in Shurennouer Fault and Its Relationwith Oil Gas Accumulation[J].Acta Petrolei Sinica,2005,26(6):40-45.
[7]吕延防,沙子萱,付晓飞,等.断层垂向封闭性定量评价方法及其应用[J].石油学报,2007,28(5):34-38.LüYan-fang,Sha Zi-xuan,Fu Xiao-fei,et al.Quantitative Evaluation Method for Fault VerticalSealing Ability and Its Application[J].Acta PetroleiSinica,2007,28(5):34-38.
[8]吴孔友,查明.柴达木盆地北块断带断层控烃作用[J].石油学报,2007,28(3):17-22.Wu Kong-you,Zha Ming.Hydrocarbon ControllingFunction of Fault in the North Block-Faulted BeltoQaidam Basin[J].Acta Petrolei Sinica,2007,28(3):17-22.
[9]孙永河,万军,付晓飞,等.贝尔凹陷断裂演化特征及其对潜山裂缝的控制[J].石油勘探与开发,2007,34(3):316-322.Sun Yong-he,Wan Jun,Fu Xiao-fei,et al.Evolutionary of Faults and Their Control on Fracturesin Buried Hill in Beier Depression[J].PetroleumExploration and Development,2007,34(3):316-322.
[10]张善文,曾溅辉.断层对沾化凹陷馆陶组石油运移和聚集影响的模拟实验研究[J].地球科学:中国地质大学学报,2003,28(2):185-190.Zhang Shan-wen,Zeng Jian-hui.An ExperimentStudy on Influence of Fault on Petroleum Migrationand Accumulation in Guantao Formation,ZhanhuaDepression[J].Earth Science:Journal of ChinaUniversity of Geosciences,2003,28(2):185-190.
[11]吴河勇,梁晓东,向才富,等.松辽盆地向斜油藏特征及成藏机理探讨[J].中国科学D辑:地球科学,2007,37(2):185-191.Wu He-yong,Liang Xiao-dong,Xiang Cai-fu,et al.Investigation of Syncline Reservoir Characteristics andForming Mechanism in Songliao Basin[J].Science inChina:Series D,2007,37(2):185-191.
[12]林景晔,童英,王新江.大庆长垣砂岩储层构造油藏油水界面控制因素研究[J].中国石油勘探,2007,13(3):13-16.Lin Jing-ye,Tong Ying,Wang Xin-jiang.Researchon Controlling Factors of Oil-Water Interface ofStructural Oil Reservoirs in Sandstone Reservoirs ofDaqing Placanticline Structure[J].China PetroleumExploration,2007,13(3):13-16.
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