断裂对盖层封闭时间有效性破坏程度的研究方法及其应用
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摘要
为了研究含油气盆地断裂发育区油气分布规律,在盖层封闭时间有效性研究的基础上,通过确定断裂与盖层的封闭能力形成时期,建立了一套断裂对盖层封闭时间有效性破坏程度的研究方法,并将其应用于海拉尔盆地乌北凹陷苏仁诺尔油田F1断裂研究中。研究表明:苏仁诺尔油田大一段泥岩盖层约在伊敏组沉积末期开始形成封闭能力,而F1断裂与大一段泥岩盖层内断层岩封闭能力形成时期约为青元岗组二段沉积时期;F1断裂对大一段泥岩盖层封闭时间有效性破坏程度较高,使原来大一段泥岩盖层封油气较好的时间有效性变成现今断层岩封闭油气较差的时间有效性,不利于油气在其下聚集与保存。研究结果与苏仁诺尔油田油气分布相吻合,表明用该方法研究断裂对盖层封闭时间有效性破坏程度是可行的。
In order to study the oil and gas distribution rules in the fault developed zone of the petroleum basin, based on the research on the closed time effectiveness of the caprock, through the determination of the formed periods of the fault and the caprock sealing ability, a set of the research methods were established about the destroy degree of the closure time effectiveness of the caprock by the faults, and moreover applied in the study of Fault F1 in Surennuoer Oilfield of Wubei Sag in Hailar Basin. The study shows that the beginning to form the sealing ability for Member Da-1 mudstone caprock in Surennuoer Oilfield was from the depositional end period of Yimin Formation, while the formed periods of the sealing ability for Fault F1 and the fault rocks within Member Da-1 mudstone caprock were about the depositional period of Member-2 of Qingyuangang Formation; the damaged degree of the closure time effectiveness by Fault F1 for Member Da-1 mudstone caprock is rather higher, thus makes the much better time effectiveness of the oil and gas sealing for the previous Member Da-1 mudstone caprock become the rather poorer present fault-rock sealing, it is detrimental to the accumulation and preservation of the oil and gas. The research results are coincident with the oil and gas distribution of Surennuoer Oilfield, this indicates that the method is feasible to study the damaged degree of the closure time effectiveness of the caprock by the faults.
In order to study the oil and gas distribution rules in the fault developed zone of the petroleum basin, based on the research on the closed time effectiveness of the caprock, through the determination of the formed periods of the fault and the caprock sealing ability, a set of the research methods were established about the destroy degree of the closure time effectiveness of the caprock by the faults, and moreover applied in the study of Fault F1 in Surennuoer Oilfield of Wubei Sag in Hailar Basin. The study shows that the beginning to form the sealing ability for Member Da-1 mudstone caprock in Surennuoer Oilfield was from the depositional end period of Yimin Formation, while the formed periods of the sealing ability for Fault F1 and the fault rocks within Member Da-1 mudstone caprock were about the depositional period of Member-2 of Qingyuangang Formation; the damaged degree of the closure time effectiveness by Fault F1 for Member Da-1 mudstone caprock is rather higher, thus makes the much better time effectiveness of the oil and gas sealing for the previous Member Da-1 mudstone caprock become the rather poorer present fault-rock sealing, it is detrimental to the accumulation and preservation of the oil and gas. The research results are coincident with the oil and gas distribution of Surennuoer Oilfield, this indicates that the method is feasible to study the damaged degree of the closure time effectiveness of the caprock by the faults.
引文
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[2]付晓飞,贾茹,王海学,等.断层-盖层封闭性定量评价:以塔里木盆地库车坳陷大北—克拉苏构造带为例[J].石油勘探与开发,2015,42(3):303-304.FU Xiaofei,JIA Ru,WANG Haixue,et al.Quantitative evaluation of fault-caprock sealing capacity:A case from Dabei-Kelasu structural belt in Kuqa Depression,Tarim Basin,NW China[J].Petroleum Exploration and Development,2015,42(3):303-304.
[3]付广,杨敬博.断盖配置对沿断裂运移油气的封闭作用:以南堡凹陷中浅层为例[J].地球科学——中国地质大学学报,2013,38(4):787-789.FU Guang,YANG Jingbo.Sealing of matching between fault and caprock to oil-gas miagration along faults:An example from middle and shallow strata in Nanpu Depression[J].Earth Science:Journal of China University of Geosciences,2013,38(4):787-789.
[4]付广,王浩然,胡欣蕾.断裂带盖层油气封盖断接厚度下限的预测方法及其应用[J].中国石油大学学报(自然科学版),2015,39(3):31-34.FU Guang,WANG Haoran,HU Xinlei.Prediction method and application of caprock faulted-contact thickness lower limit for oil-gas sealing in fault zone[J].Journal of China University of Petroleum( Edition of Natural Science),2015,39(3):31-34.
[5]孙永河,赵博,董月霞,等.南堡凹陷断裂对油气运聚成藏的控制作用[J].石油与天然气地质,2013,34(4):540-549.SUN Yonghe,ZHAO Bo,DONG Yuexia,et al.Control of faults on hydrocarbon migration and accumulation in the Nanpu Sag[J].Oil & Gas Geology,2013,34(4):540-549.
[6]李新琦,李慧勇,于海波,等.张家口—蓬莱断裂带渤海段断裂特征及其与油气差异成藏关系[J].油气地质与采收率,2016,23(5):16-22,49.LI Xinqi,LI Huiyong,YU Haibo,et al.Fault characteristics and its relationship with differential hydrocarbon accumulation of Zhangjiakou-Penglai Fault in Bohai region[J].Petroleum Geology and Recovery Efficiency,2016,23(5):16-22,49.
[7]曹默雷,陈书平,刘雅利.济阳坳陷沾车地区义东断裂带走滑构造特征及其控藏作用[J].油气地质与采收率,2018,25(6):51-55.CAO Molei,CHEN Shuping,LIU Yali.Strike-slip structure characteristics of Yidong fault zone and its influence on the hydrocarbon accumulation in Zhanche area,Jiyang Depression[J].Petroleum Geology and Recovery Efficiency,2018,25(6):51-55.
[8]李龙,张新涛,张震,等.渤海海域渤中西洼断裂控藏作用定量分析:以曹妃甸12-6油田为例[J].油气地质与采收率,2018,25(3):20-28.LI Long,ZHANG Xintao,ZHANG Zhen,et al.Quantitative analysis of control of faults on hydrocarbon accumulation in the west of Bozhong Subsag of Bohai Sea:A case study of CFD12-6 Oilfield[J].Petroleum Geology and Recovery Efficiency,2018,25(3):20-28.
[9]温宏雷,邓辉,李正宇,等.渤海海域新近系明化镇组断裂控藏作用定量评价:以黄河口凹陷中央构造脊为例[J].油气地质与采收率,2017,24(4):36-42.WEN Honglei,DENG Hui,LI Zhengyu,et al.Quantitative evaluation of control effect of faults on hydrocarbon accumulation in the Minghuazhen Formation,Bohai Sea:A case study of central structural ridge in Huanghekou Sag[J].Petroleum Geology and Recovery Efficiency,2017,24(4):36-42.
[10]邓爱居,张少华,李凤群,等.饶阳凹陷肃宁地区新生代断裂活动及其对油气成藏的控制作用[J].油气地质与采收率,2017,24(3):18-24.DENG Aiju,ZHANG Shaohua,LI Fengqun,et al.Cenozoic fault activity and its control on hydrocarbon accumulation in Suning area of Raoyang Sag,Bohai Bay Basin[J].Petroleum Geology and Recovery Efficiency,2017,24(3):18-24.
[11]宋静,管龙凤.徐家围子断陷营城组气源断裂与生、储、盖空间配置对气藏的控制作用[J].大庆石油地质与开发,2014,33 (1):32-37.SONG Jing,GUAN Longfeng.Controlling action of space matching among source rock faults,source rock,reservoir and cap rock on Yingcheng-Formation gas reservoir accumulation in Xujiaweizi Fault Depression[J].Petroleum Geology & Oilfield Development in Daqing,2014,33 (1):32-37.
[12]徐春双,徐淑艳,孙建军.断裂与砂泥组合的配置类型及对油气运移的控制作用[J].大庆石油地质与开发,2015,34 (3):36-41.XU Chunshuang,XU Shuyan,SUN Jianjun.Configuration types between the faults and sandston-mudstone combination and their controlling actions on the oil and gas migrations[J].Petroleum Geology & Oilfield Development in Daqing,2015,34 (3):36-41.
[13]文全.不同运移方向下断裂附近油气聚集的差异性[J].大庆石油地质与开发,2016,35 (3):26-30.WEN Quan.Differences of the hydrocarbon accumulation near the faults in different migration directions[J].Petroleum Geology & Oilfield Development in Daqing,2016,35 (3):26-30.
[14]付晓飞,陈哲,闫百泉,等.海拉尔-塔木察格盆地中部断陷带油气富集主控因素分析:断层和盖层双控模式[J].中国科学:地球科学,2013,43(8):1338-1351.FU Xiaofei,CHEN Zhe,YAN Baiquan,et al.The controlling factors for oil and gas accumulation analysis of faults and cover dual control mode in Hailar-Tamtsag Basin Central Rift Zone[J].Scientia Sinica(Terrae) ,2013,43(8):1338-1351.
[15]胡慧婷,王龙,刘岩,等.超压泥岩盖层中断层垂向封闭能力研究方法及其应用[J].石油与天然气地质,2014,35(3):360-362.HU Huiting,WANG Long,LIU Yan,et al.Research method of fault vertical sealing capacity in overpressure mudstone caprock and its application[J].Oil & Gas Geology,2014,35(3):360-362.
[16]吕延防,王伟,胡欣蕾,等.断层侧向封闭性定量评价方法[J].石油勘探与开发,2016,43(2):1-6.Lü Yanfang,WANG Wei,HU Xinlei,et al.Quantitative evaluation method of fault lateral sealing[J].Petroleum Exploration and Development,2016,43(2):1-6.
[17]付广,史集建,吕延防.断层岩古排替压力恢复及其封闭性能研究[J].中国矿业大学学报,2013,42(6):997-1000.FU Guang,SHI Jijian,Lü Yanfang.Study of ancient displacement pressure of fault rock recovery and its sealing characteristics[J].Journal of China University of Mining & Technology,2013,42(6):997-1000.
[18]史集建,李丽丽,付广,等.盖层内断层垂向封闭性定量评价方法及应用[J].吉林大学学报(地球科学版),2012,42(增刊2):163-164.SHI Jijian,LI Lili,FU Guang,et al.Quantitative evaluation method and application of vertical sealing property of faults in caprock[J].Journal of Jilin University( Earth Science Edition),2012,42(S2):163-164.
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