断层圈闭封闭性综合判别方法及其应用
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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,在断层圈闭封闭(侧向和垂向同时封闭)及其影响因素研究的基础上,通过比较断层圈闭遮挡断层岩的泥质体积分数和断层侧向封油气所需最小的断层岩泥质体积分数的相对大小,以及断层圈闭的盖层断接厚度和垂向封闭所需最小盖层断接厚度的相对大小,建立了一套断层圈闭封闭性综合判别方法,并将其应用于渤海湾盆地冀中坳陷霸县凹陷议论堡地区沙二段断层圈闭封闭性的综合判别中。结果表明:议论堡地区沙二段断层圈闭封闭区主要分布在王仙庄断层中部和北部、梁召断层南部和马西断层中部,该断层圈闭封闭区有利于沙二段油气聚集与保存。研究结果与目前议论堡地区沙二段已发现的油气分布情况相吻合,表明用该方法综合判别断层圈闭封闭性是可行的。
In order to study the distribution of the oil and gas in the fracture developed zone of oil-bearing basins, based on the researches on the fault trap closures(lateral and vertical closures at the same time) and their influencing factors, a set of the comprehensive judging methods of the fault trap sealing were established by comparing the relative shale contents in the fault-trap barrier fault rock and required minimal one by the fault lateral sealing and moreover the relative thicknesses of both the caprock connected one of the fault trap and the minimal caprock connected one required for the vertical closure. And furthermore the method was applied in the comprehensive judgement of the fault trap sealing in Member Es2 of Yilunpu area in Baxian Sag of Jizhong Depression in Bohai Bay Basin. The result shows that the closed regions by Member Es2 fault trap in Yilunpu area are mainly distributed in the central and northern parts of Wangxianzhuang Fault, the southern part of Liangzhao Fault and the middle part of Maxi Fault, which are beneficial to the oil and gas accumulation and preservation. The study results are coincident with the hydrocarbon distribution discovered in Member Es2 in Yilunpu area, which show that this method is feasible for the comprehensive judgement of the fault-trap sealings.
In order to study the distribution of the oil and gas in the fracture developed zone of oil-bearing basins, based on the researches on the fault trap closures(lateral and vertical closures at the same time) and their influencing factors, a set of the comprehensive judging methods of the fault trap sealing were established by comparing the relative shale contents in the fault-trap barrier fault rock and required minimal one by the fault lateral sealing and moreover the relative thicknesses of both the caprock connected one of the fault trap and the minimal caprock connected one required for the vertical closure. And furthermore the method was applied in the comprehensive judgement of the fault trap sealing in Member Es2 of Yilunpu area in Baxian Sag of Jizhong Depression in Bohai Bay Basin. The result shows that the closed regions by Member Es2 fault trap in Yilunpu area are mainly distributed in the central and northern parts of Wangxianzhuang Fault, the southern part of Liangzhao Fault and the middle part of Maxi Fault, which are beneficial to the oil and gas accumulation and preservation. The study results are coincident with the hydrocarbon distribution discovered in Member Es2 in Yilunpu area, which show that this method is feasible for the comprehensive judgement of the fault-trap sealings.
引文
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[14]王超,吕延防,付广,等.油气成藏期断层古侧向封闭性预测方法及其应用[J].地球科学——中国地质大学学报,2017,42(10):1787-1801.WANG Chao,Lü Yanfang,FU Guang,et al.Ancient lateral sealing evaluation method of fault and its application in hydrocarbon accumulation period[J].Earth Science:Journal of China University of Geosciences,2017,42(10):1787-1801.
[15]胡欣蕾,吕延防,孙永河,等.泥岩盖层内断层垂向封闭能力综合定量评价:以南堡凹陷5号构造东二段泥岩盖层为例[J].吉林大学学报(地球科学版),2018,48(3):705-718.HU Xinlei,Lü Yanfang,SUN Yonghe,et al.Comprehensive quantitative evaluation of vertical sealing ability of faults in caprock:An example of Ed2 mudstone caprock in Nanpu Sag[J].Journal of Jilin University(Earth Science Edition),2018,48(3):705-718.
[16]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.Time-space distribution of vertical seal in Shurennouer Fault and its relation with oil-gas accumulation[J].Acta Petrolei Sinica,2005,26(6):40-45.
[17]吕延防,许辰璐,付广,等.南堡凹陷中浅层盖-断组合控油模式及有利含油层位预测[J].石油与天然气地质,2014,35(1):86-97.Lü Yanfang,XU Chenlu,FU Guang,et al.Oil-controlling models of caprock-fault combination and prediction of favorable horizons for hydrocarbon accumulation in middle-shallow sequences of Nanpu Sag[J].Oil & Gas Geology,2014,35(1):86-97.
[2]付广,王浩然,胡欣蕾.断层垂向封闭的断-储排替压力差法及其应用[J].石油学报,2014,35(4):685-691.FU Guang,WANG Haoran,HU Xinlei.Modification and application of fault-reservoir displacement pressure differential method for vertical sealing of faults[J].Acta Petrolei Sinica,2014,35 (4):685-691.
[3]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):310-316.Lü Yanfang,WANG Wei,HU Xinlei,et al.Quantitative evaluation method of fault lateral sealing[J].Petroleum Exploration and Development,2016,43 (2):310-316.
[4]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):359-364.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):359-364.
[5]LASHIN A,El-AAL M A.Juxtaposition and fault seal analysis of some mixed clastic reservoirs in Egypt[J].Geophysics,2004,1(1):165-184.
[6]付广,展铭望.活动期断层侧向封闭的地质条件及其研究方法[J].天然气工业,2016,36(10):28-34.FU Guang,ZHAN Mingwang.Geological conditions for lateral closure of active faults and its research methods[J].Natural Gas Industry,2016,36 (10):28-34.
[7]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.
[8]刘华,蒋有录,徐昊清,等.冀中坳陷新近系油气成藏机理与成藏模式[J].石油学报,2011,32(6):928-936.LIU Hua,JIANG Youlu,XU Haoqing,et al.Accumulation mechanisms and modes of Neogene hydrocarbon in Jizhong Depression[J].Acta Petrolei Sinica,2011,32(6):928-936.
[9]付广,王超,历娜,等.断-砂配置中油气运移方向的判别方法及其应用[J].中国石油大学学报(自然科学版),2016,40(5):51-58.FU Guang,WANG Chao,LI Na,et al.Discriminatory method and its application of oil-gas migrating directionin fault-sand-body configuration[J].Journal of China University of Petroleum (Edition of Natural Science),2016,40(5):51-58.
[10]付广,展铭望.活动期断裂侧向封闭的地质条件及其研究方法[J].天然气工业,2016,36(10):28-34.FU Guang,ZHAN Mingwang.Geological conditions for lateral sealing of active faults and relevant research methods[J].Natural Gas Industry,2016,36 (10):28-34.
[11]罗晓容,雷裕红,张立宽,等.油气运移输导层研究及量化表征方法[J].石油学报,2012,33(3):428-436.LUO Xiaorong,LEI Yuhong,ZHANG Likuan,et al.Characterization of carrier formation for hydrocarbon migration:Concepts and approaches[J].Acta Petrolei Sinica,2012,33(3):428-436.
[12]吕延防,黄劲松,付广,等.砂泥岩薄互层段中断层封闭性的定量研究[J].石油学报,2009,30(6):824-829.Lü Yanfang,HUANG Jinsong,FU Guang,et al.Quantitative study on fault sealing ability in sandstone and mudstone thin interbed[J].Acta Petrolei Sinica,2009,30(6):824-829.
[13]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.Lü Yanfang,SHA Zixuan,FU Xiaofei,et al.Quantitative evaluation method for fault vertical sealing ability and its application[J].Acta Petrolei Sinica,2007,28(5):34-38.
[14]王超,吕延防,付广,等.油气成藏期断层古侧向封闭性预测方法及其应用[J].地球科学——中国地质大学学报,2017,42(10):1787-1801.WANG Chao,Lü Yanfang,FU Guang,et al.Ancient lateral sealing evaluation method of fault and its application in hydrocarbon accumulation period[J].Earth Science:Journal of China University of Geosciences,2017,42(10):1787-1801.
[15]胡欣蕾,吕延防,孙永河,等.泥岩盖层内断层垂向封闭能力综合定量评价:以南堡凹陷5号构造东二段泥岩盖层为例[J].吉林大学学报(地球科学版),2018,48(3):705-718.HU Xinlei,Lü Yanfang,SUN Yonghe,et al.Comprehensive quantitative evaluation of vertical sealing ability of faults in caprock:An example of Ed2 mudstone caprock in Nanpu Sag[J].Journal of Jilin University(Earth Science Edition),2018,48(3):705-718.
[16]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.Time-space distribution of vertical seal in Shurennouer Fault and its relation with oil-gas accumulation[J].Acta Petrolei Sinica,2005,26(6):40-45.
[17]吕延防,许辰璐,付广,等.南堡凹陷中浅层盖-断组合控油模式及有利含油层位预测[J].石油与天然气地质,2014,35(1):86-97.Lü Yanfang,XU Chenlu,FU Guang,et al.Oil-controlling models of caprock-fault combination and prediction of favorable horizons for hydrocarbon accumulation in middle-shallow sequences of Nanpu Sag[J].Oil & Gas Geology,2014,35(1):86-97.