渤海湾盆地冀中坳陷天然气地质条件、资源潜力及勘探方向
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摘要
自中国第三次资源评价以来,渤海湾盆地冀中坳陷北部新钻井揭示了深层发育厚层烃源岩,并且牛东潜山、杨税务潜山等相继获得重要突破,预示着冀中北部具有较好的天然气勘探前景,有必要对天然气资源潜力重新评价。通过冀中北部天然气藏地质条件综合研究表明,充足的气源是天然气富集的物质基础,二级构造带是天然气的主要富集带,优质盖层是天然气富集的关键,总结建立了新生古储、自生自储及下生上储3种类型的成藏模式。按照"层、区带"的研究思路,综合盆地模拟、类比法及统计法等多方法开展常规天然气资源评价。结果表明:冀中坳陷总生气量达到19.5×10~(12) m~3,具备较强供气能力,天然气总地质资源量约为3 300×10~8 m~3,剩余天然气主要分布在冀中坳陷北部廊固凹陷、霸县凹陷及武清凹陷古近系深层及潜山领域,剩余地质资源约为3 000×10~8 m~3。依据成藏地质条件分析及剩余资源规模,综合评价优选出廊固凹陷中西部、河西务构造带、苏桥文安地区、码头—泗村店潜山带为冀中坳陷天然气增储上产的有利区带。
Since the 3~(th) round of resource evaluation,new drillings show deep zones have thick hydrocarbon source rocks,and natural gas reserves were found in Niudong buried-hills and Yangsuiwu buried-hills.It indicated that northern Jizhong Depression has good gas exploration prospect.Natural gas resource potential need re-evaluate.Through study on gas reservoir geological conditions,it shows that sufficient gas source is the material basis for the natural gas enrichment,the secondary structural belt is the main enrichment region with natural gas,high quality cover is the key to the natural gas enrichment.Three types of gas accumulation models are discovered and described as gas generated from young source rock and accumulated in old reservoir rock,self-generation and self-accumulation,and gas generated from lower source rock and accumulated in upper reservoir rock.According to the train of thought for studying the formations and zones,we evaluate natural gas resource through basin modeling,analog analysis and statistics.Jizhong Depression whose gas generation volume reaches 19.5×10~(12) m~3,suggests strong supply capacity.Natural gas resource is estimatedas 3 300×10~8 m~3,which mainly distribute in the deep zones of Es and buried-hills in Langgusag,Baxian Sag,Wuqing Sag located in northern Jizhong Depression.The remaining geological resource is still over 3 000×10~8 m~3.After comprehensive assessment,central-western part of Langgu Sag,Hexiwu tectonic belt,Suqiao-Wenan area,Matou-Sicundian buried-hills are ranked most favorable play fairways enriched with remaining gas resources,as the favorable zones for increasing reserves of natural gas.
Since the 3~(th) round of resource evaluation,new drillings show deep zones have thick hydrocarbon source rocks,and natural gas reserves were found in Niudong buried-hills and Yangsuiwu buried-hills.It indicated that northern Jizhong Depression has good gas exploration prospect.Natural gas resource potential need re-evaluate.Through study on gas reservoir geological conditions,it shows that sufficient gas source is the material basis for the natural gas enrichment,the secondary structural belt is the main enrichment region with natural gas,high quality cover is the key to the natural gas enrichment.Three types of gas accumulation models are discovered and described as gas generated from young source rock and accumulated in old reservoir rock,self-generation and self-accumulation,and gas generated from lower source rock and accumulated in upper reservoir rock.According to the train of thought for studying the formations and zones,we evaluate natural gas resource through basin modeling,analog analysis and statistics.Jizhong Depression whose gas generation volume reaches 19.5×10~(12) m~3,suggests strong supply capacity.Natural gas resource is estimatedas 3 300×10~8 m~3,which mainly distribute in the deep zones of Es and buried-hills in Langgusag,Baxian Sag,Wuqing Sag located in northern Jizhong Depression.The remaining geological resource is still over 3 000×10~8 m~3.After comprehensive assessment,central-western part of Langgu Sag,Hexiwu tectonic belt,Suqiao-Wenan area,Matou-Sicundian buried-hills are ranked most favorable play fairways enriched with remaining gas resources,as the favorable zones for increasing reserves of natural gas.
引文
[1]Liang Hongbin,Jiang Shuanqi,Yang Guiru,et al.Study on natural gas type,reservoir forming models and conditions in north Jizhong Depression[J].China Petroleum Exploration,2002,7(1):17-33.梁宏斌,降栓奇,杨桂茹,等.冀中坳陷北部天然气类型、成藏模式及成藏条件研究[J].中国石油勘探,2002,7(1):17-33.
[2]Zhao Xianzheng,Jin Qiang,Liang Hongbin,et al.Natural gas genesis and exploration prospect in north Jizhong Depression[J].Special Oil and Gas Reservoirs,2010,17(4):1-5.赵贤正,金强,梁宏斌,等.冀中坳陷北部天然气成因类型与勘探前景[J].特种油气藏,2010,17(4):1-5.
[3]Wang Quan,Cao Yijun,Diao Fan,et al.The distribution and origin analysis of natural gas in Langgu Sag,Bohai Bay Basin[J].Natural Gas Geoscience,2017,28(9):1363-1374.王权,操义军,刁帆,等.渤海湾盆地廊固凹陷天然气成因类型及分布规律[J].天然气地球科学,2017,28(9):1363-1374.
[4]Tian Jianzhang,Zhang Ruifeng,Li Xianping,et al.Natural gas reservoir forming system and exploration direction of northern central Hebei Depression[J].Journal of Southwest Petroleum University:Science&Technology Edition,2010,32(3):67-74.田建章,张锐锋,李先平,等.冀中坳陷北部天然气成藏系统及勘探方向[J].西南石油大学学报:自然科学版,2010,32(3):67-74.
[5]Wang Jian,Wang Quan,Shi Yulei,et al.The cause of ultra deep-seated oil and gas of paleogene in Baxian Sag[J].Natural Gas Geoscience,2015,26(1):21-27.王建,王权,师玉雷,等.冀中坳陷霸县凹陷古近系超深层油气成因分析[J].天然气地球科学,2015,26(1):21-27.
[6]Du Jinhu,Zhao Xianzheng,Zhang Yiming,et al.Great discovery made in risk exploration of Well Niudong 1and its significance[J].China Petroleum Exploration,2012,17(1):1-7.杜金虎,赵贤正,张以明,等.牛东1风险探井重大发现及其意义[J].中国石油勘探,2012,17(1):1-7.
[7]Zhao Xianzheng,Jin Fengming,Wang Quan,et al.Niudong 1ultra-deep and ultra-high temperature subtle buried hill field in Bohai Bay Basin:Discovery and significance[J].Acta Petrolei Sinica,2011,32(6):915-927.赵贤正,金凤鸣,王权,等.渤海湾盆地牛东1超深潜山高温油气藏的发现及其意义[J].石油学报,2011,32(6):915-927.
[8]Du Jinhu,He Haiqing,Zhao Xianzheng,et al.Significant exploration breakthrough in Yangsuiwu ultra-deep and ultra-high temperature Ordovician buried-hill in Langgu Sag,Bohai Bay Basin[J].China Petroleum Exploration,2017,22(3):1-12.杜金虎,何海清,赵贤正,等.渤海湾盆地廊固凹陷杨税务超深超高温奥陶系潜山油气勘探重大突破实践与启示[J].中国石油勘探,2017,22(3):1-12.
[9]Gao Xianzhi,Wu Weitao,Lu Xuejun,et al.Multiplicity of hydrocarbon reservoir and accumulation controlling factors within buried hills in Jizhong Depression[J].Journal of China University of Petroleum:Science&Technology Edition,2011,35(3):31-35.高先志,吴伟涛,卢学军,等.冀中坳陷潜山内幕油气藏的多样性与成藏控制因素[J].中国石油大学学报:自然科学版,2011,35(3):31-35.
[10]Liu Chao.Source rocks and tight conglomerate gas resource potential evaluation in Shahezi Formation of Xujiaweizi Depression,Songliao Basin[J].Natural Gas Geoscience,2017,28(3):429-438.刘超.松辽盆地徐家围子地区沙河子组气源岩与致密砂砾岩气资源潜力评价[J].天然气地球科学,2017,28(3):429-438.
[11]Chen Xiaoyan,Tian Fuqing,Zou Huayao,et al.Study on hydrocarbon-generation of lacustrine source rock based on hydrous pyrolysis experiments of source rocks from Jizhong Depression,Bohai Bay Basin[J].Natural Gas Geoscience,2018,29(1):103-113.陈晓艳,田福清,邹华耀,等.湖相烃源岩热演化生烃研究---基于冀中坳陷烃源岩加水热模拟实验[J].天然气地球科学,2018,29(1):103-113.
[12]He Wenjun,Wang Xulong,Yang Haibo,et al.Selection of typical calibrated areas and establishmeng of the calculation methol system of the quantity of resource in Junggar Basin[J].Natural Gas Geoscience,2017,28(1):62-73.何文军,王绪龙,杨海波,等.准噶尔盆地典型刻度区选择及其资源量计算方法体系建立[J].天然气地球科学,2017,28(1):62-73.
[13]Xu Chunchun,Zou Weihong,Yang Yueming,et al.Status and prospects of exploration and exploition of the deep oil&gas resources onshore China[J].Natural Gas Geoscience,2017,28(8):1139-1153.徐春春,邹伟宏,杨跃明,等.中国陆上深层油气资源勘探开发现状及展望[J].天然气地球科学,2017,28(8):1139-1153.
[2]Zhao Xianzheng,Jin Qiang,Liang Hongbin,et al.Natural gas genesis and exploration prospect in north Jizhong Depression[J].Special Oil and Gas Reservoirs,2010,17(4):1-5.赵贤正,金强,梁宏斌,等.冀中坳陷北部天然气成因类型与勘探前景[J].特种油气藏,2010,17(4):1-5.
[3]Wang Quan,Cao Yijun,Diao Fan,et al.The distribution and origin analysis of natural gas in Langgu Sag,Bohai Bay Basin[J].Natural Gas Geoscience,2017,28(9):1363-1374.王权,操义军,刁帆,等.渤海湾盆地廊固凹陷天然气成因类型及分布规律[J].天然气地球科学,2017,28(9):1363-1374.
[4]Tian Jianzhang,Zhang Ruifeng,Li Xianping,et al.Natural gas reservoir forming system and exploration direction of northern central Hebei Depression[J].Journal of Southwest Petroleum University:Science&Technology Edition,2010,32(3):67-74.田建章,张锐锋,李先平,等.冀中坳陷北部天然气成藏系统及勘探方向[J].西南石油大学学报:自然科学版,2010,32(3):67-74.
[5]Wang Jian,Wang Quan,Shi Yulei,et al.The cause of ultra deep-seated oil and gas of paleogene in Baxian Sag[J].Natural Gas Geoscience,2015,26(1):21-27.王建,王权,师玉雷,等.冀中坳陷霸县凹陷古近系超深层油气成因分析[J].天然气地球科学,2015,26(1):21-27.
[6]Du Jinhu,Zhao Xianzheng,Zhang Yiming,et al.Great discovery made in risk exploration of Well Niudong 1and its significance[J].China Petroleum Exploration,2012,17(1):1-7.杜金虎,赵贤正,张以明,等.牛东1风险探井重大发现及其意义[J].中国石油勘探,2012,17(1):1-7.
[7]Zhao Xianzheng,Jin Fengming,Wang Quan,et al.Niudong 1ultra-deep and ultra-high temperature subtle buried hill field in Bohai Bay Basin:Discovery and significance[J].Acta Petrolei Sinica,2011,32(6):915-927.赵贤正,金凤鸣,王权,等.渤海湾盆地牛东1超深潜山高温油气藏的发现及其意义[J].石油学报,2011,32(6):915-927.
[8]Du Jinhu,He Haiqing,Zhao Xianzheng,et al.Significant exploration breakthrough in Yangsuiwu ultra-deep and ultra-high temperature Ordovician buried-hill in Langgu Sag,Bohai Bay Basin[J].China Petroleum Exploration,2017,22(3):1-12.杜金虎,何海清,赵贤正,等.渤海湾盆地廊固凹陷杨税务超深超高温奥陶系潜山油气勘探重大突破实践与启示[J].中国石油勘探,2017,22(3):1-12.
[9]Gao Xianzhi,Wu Weitao,Lu Xuejun,et al.Multiplicity of hydrocarbon reservoir and accumulation controlling factors within buried hills in Jizhong Depression[J].Journal of China University of Petroleum:Science&Technology Edition,2011,35(3):31-35.高先志,吴伟涛,卢学军,等.冀中坳陷潜山内幕油气藏的多样性与成藏控制因素[J].中国石油大学学报:自然科学版,2011,35(3):31-35.
[10]Liu Chao.Source rocks and tight conglomerate gas resource potential evaluation in Shahezi Formation of Xujiaweizi Depression,Songliao Basin[J].Natural Gas Geoscience,2017,28(3):429-438.刘超.松辽盆地徐家围子地区沙河子组气源岩与致密砂砾岩气资源潜力评价[J].天然气地球科学,2017,28(3):429-438.
[11]Chen Xiaoyan,Tian Fuqing,Zou Huayao,et al.Study on hydrocarbon-generation of lacustrine source rock based on hydrous pyrolysis experiments of source rocks from Jizhong Depression,Bohai Bay Basin[J].Natural Gas Geoscience,2018,29(1):103-113.陈晓艳,田福清,邹华耀,等.湖相烃源岩热演化生烃研究---基于冀中坳陷烃源岩加水热模拟实验[J].天然气地球科学,2018,29(1):103-113.
[12]He Wenjun,Wang Xulong,Yang Haibo,et al.Selection of typical calibrated areas and establishmeng of the calculation methol system of the quantity of resource in Junggar Basin[J].Natural Gas Geoscience,2017,28(1):62-73.何文军,王绪龙,杨海波,等.准噶尔盆地典型刻度区选择及其资源量计算方法体系建立[J].天然气地球科学,2017,28(1):62-73.
[13]Xu Chunchun,Zou Weihong,Yang Yueming,et al.Status and prospects of exploration and exploition of the deep oil&gas resources onshore China[J].Natural Gas Geoscience,2017,28(8):1139-1153.徐春春,邹伟宏,杨跃明,等.中国陆上深层油气资源勘探开发现状及展望[J].天然气地球科学,2017,28(8):1139-1153.