黄骅坳陷南区油气分布规律及其成藏机制
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摘要
从渤海湾盆地黄骅坳陷南区油气聚集特征出发,通过研究其成藏条件及主干断层各时期的发育特点,系统分析了油源断层对油气聚集的作用机理。研究认为,长期发育的油源断裂及主伸展层中的次级断层活跃期的"地震泵"作用是黄骅坳陷南区油气聚集的主要成藏动力。"地震泵"源控制油气的平面分布位置,而"地震泵"源及主伸展层产生的"次级地震泵"源则联合控制油气运聚层位。地震泵作用区附近的储集层及圈闭是最有效的油气聚集部位,孔二段油藏主要分布于孔西断层西南部尾端、孔西及风化店断层中部断距骤减处、孔东断层两端断距及走向发生突变处等,孔一段上段为主伸展层,聚集了大量的油气。图5表1参25
On the basis of oil and gas distribution in southern Huanghua Depression,the hydrocarbon accumulation conditions and developing characteristics of the main faults in different stages are researched.The mechanism of source faults accumulating hydrocarbon is analyzed.The seismic pumping mechanism of long-term developing source faults is the main driving force of hydrocarbon accumulation.The sources of seismic pumping control the horizontal distribution of hydrocarbons,while the sources of seismic pumping and the secondary seismic pumping sources produced by the main tensional layer control the lengthways accumulation of oil and gas.The reservoir sands or oil traps near the seismic pumping region might be the most efficient fields for hydrocarbon accumulation.Hydrocarbons sourced from the second member of the Kongdian Formation are mainly distributed at the southwestern tail of the Kongxi fault and the fault rapidly decreased displacement or the abruptly changed strike of the Kongxi,Fenghuadian and Kongdong faults.The main tensional layer of the upper part of the first member,Kongdian Formation accumulates large quantities of oil and gas.
On the basis of oil and gas distribution in southern Huanghua Depression,the hydrocarbon accumulation conditions and developing characteristics of the main faults in different stages are researched.The mechanism of source faults accumulating hydrocarbon is analyzed.The seismic pumping mechanism of long-term developing source faults is the main driving force of hydrocarbon accumulation.The sources of seismic pumping control the horizontal distribution of hydrocarbons,while the sources of seismic pumping and the secondary seismic pumping sources produced by the main tensional layer control the lengthways accumulation of oil and gas.The reservoir sands or oil traps near the seismic pumping region might be the most efficient fields for hydrocarbon accumulation.Hydrocarbons sourced from the second member of the Kongdian Formation are mainly distributed at the southwestern tail of the Kongxi fault and the fault rapidly decreased displacement or the abruptly changed strike of the Kongxi,Fenghuadian and Kongdong faults.The main tensional layer of the upper part of the first member,Kongdian Formation accumulates large quantities of oil and gas.
引文
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[19]于水明,梅廉夫,施和生,等.珠江口盆地番禺低隆起—白云凹陷北坡断层与油气成藏关系[J].石油勘探与开发,2007,34(5):562-565,579.
[20]张君峰,兰朝利.鄂尔多斯盆地榆林—神木地区上古生界裂缝和断层分布及其对天然气富集区的影响[J].石油勘探与开发,2006,33(2):172-177.
[21]汪望泉,窦立荣,张志伟,等.苏丹福拉凹陷转换带特征及其与油气的关系[J].石油勘探与开发,2007,34(1):124-127.
[22]马丽娟,郑和荣,解习农.东营凹陷中央隆起带断裂构造及油气运移[J].石油与天然气地质,2005,26(2):246-251.
[23]陈发景,贾庆素,张洪年.传递带及其在砂体发育中的作用[J].石油与天然气地质,2004,25(2):144-148.
[24]史文东,彭尚谦,姜凤玖.东辛油田断层转换带与油气富集[J].石油勘探与开发,2003,30(5):14-17.
[25]刘东周,刘海波,王长春,等.同生断层分段生长特征与油气关系[J].西南石油学院学报,2002,24(3):16-19.
[2]付晓飞,付广,赵平伟.断层封闭机理及主要影响因素研究[J].天然气地球科学,1999,10(3-4):54-62.
[3]邓运华.断裂—砂体形成油气运移的“中转站”模式[J].中国石油勘探,2005,(6):14-17.
[4]付广,王朋岩,孙洪斌.断层垂向封闭模式及研究方法[J].新疆石油地质,1998,19(1):7-10.
[5]付广,李玉喜,张云峰,等.断层垂向封闭油气性研究方法及其应用[J].天然气工业,1997,17(6):22-25.
[6]白新华,罗群.利用异常地层压力参数判断断层封闭性[J].大庆石油地质与开发,2004,23(6):13-15.
[7]邱贻博,查明,曲江秀.高邮凹陷陈堡及陈堡东地区断层封闭性研究[J].石油勘探与开发,2007,34(2):197-201.
[8]孙龙涛,陈长民,詹文欢,等.断层封堵能力定量评价[J].石油勘探与开发,2007,34(4):456-460.
[9]Sibson R H,McMoore J,Rankin A H.Seismic pumping:Ahydrothermal fluid transport mechanism[J].Journal of GeologyScience,1975,131(6):653-660.
[10]Hooper E C D.Fluid migration along growth fault in compactingsediments[J].Journal of Petroleum Geology,1991,14:161-180.
[11]阎福礼,贾东,卢华复,等.东营凹陷油气运移的地震泵作用[J].石油与天然气地质,1999,20(4):295-298.
[12]于翠玲,曾溅辉.断层幕式活动期和间歇期流体运移与油气成藏特征[J].石油实验地质,2005,27(2):129-132.
[13]华保钦.构造应力场、地震泵和油气运移[J].沉积学报,1995,13(2):77-85.
[14]付立新,王东林,肖玉永.伸展断层作用对油气二次运移的影响[J].石油大学学报(自然科学版),2000,24(4):71-74.
[15]陆廷清,苏培东,常健民,等.负压空吸作用是油气藏的成藏机制之一[J].石油勘探与开发,2003,30(5):116-118.
[16]刘玉梅,邓泽进,孙广伯,等.板桥断裂构造带油气成藏组合特征[J].天然气地球科学,2004,14(4):275-278.
[17]方立敏,罗群.北塘凹陷断裂特征与油气分布规律[J].西安石油学院学报(自然科学版),2003,18(4):1-6.
[18]陆先亮.渤海湾盆地新生代断裂活动及其对含油气系统和油气分布的影响[J].油气地质与采收率,2005,12(3):31-35.
[19]于水明,梅廉夫,施和生,等.珠江口盆地番禺低隆起—白云凹陷北坡断层与油气成藏关系[J].石油勘探与开发,2007,34(5):562-565,579.
[20]张君峰,兰朝利.鄂尔多斯盆地榆林—神木地区上古生界裂缝和断层分布及其对天然气富集区的影响[J].石油勘探与开发,2006,33(2):172-177.
[21]汪望泉,窦立荣,张志伟,等.苏丹福拉凹陷转换带特征及其与油气的关系[J].石油勘探与开发,2007,34(1):124-127.
[22]马丽娟,郑和荣,解习农.东营凹陷中央隆起带断裂构造及油气运移[J].石油与天然气地质,2005,26(2):246-251.
[23]陈发景,贾庆素,张洪年.传递带及其在砂体发育中的作用[J].石油与天然气地质,2004,25(2):144-148.
[24]史文东,彭尚谦,姜凤玖.东辛油田断层转换带与油气富集[J].石油勘探与开发,2003,30(5):14-17.
[25]刘东周,刘海波,王长春,等.同生断层分段生长特征与油气关系[J].西南石油学院学报,2002,24(3):16-19.
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