秦南凹陷地层岩性油气藏勘探关键技术及其应用成效
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摘要
渤海海域秦南凹陷勘探程度低,在少井条件下面临古近系储层预测难度大、地层岩性圈闭识别刻画难度大和复杂岩性储层识别难度大等勘探难题。在常规地质手段无法有效解决该区勘探问题的情况下,通过石油地质条件综合研究和技术攻关,建立了以地质模式为指导的地质-地震一体化储层预测技术、精细层序格架约束下的地层岩性圈闭识别及刻画技术和复杂岩性储层岩性识别技术等3项关键技术;并在秦南凹陷进行了应用,发现了秦皇岛29-2西、秦皇岛29-2东等地层岩性油气藏,并落实了一系列具有良好勘探潜力的地层岩性圈闭,对秦南凹陷地层岩性油气藏的进一步勘探起到了很好的推动作用,也为其他地区的地层岩性油气藏勘探提供了借鉴作用。
Qinnan sag in Bohai sea is low in terms of exploration degree.Based on the sparsely drilled wells,it is difficult to predict reservoirs,identify and depict stratigraphic-lithologic traps,and identify the complex lithologic reservoirs.These difficulties cannot be solved by conventional geologic means.Therefore,three key techniques were developed via the comprehensive study of petroleum geology and technical campaign,including the geology-seismic integrated prediction of reservoirs guided by ageological model,the identification and depiction of stratigraphic-lithologic traps under the fine sequence stratigraphic framework,and the lithological identification of complex lithologic reservoirs.Their applications have resulted in quite good exploration consequences in Qinnan sag.Many stratigraphic-lithologic reservoirs were discovered,such as QHD29-2 W and QHD29-2E.A series of good potential stratigraphic-lithologic traps were identified.These key techniques can play a significant role in the further exploration for stratigraphic-lithologic reservoirs in Qinnan sag,and provide the reference basis for stratigraphic-lithologic reservoir exploration in other areas.
Qinnan sag in Bohai sea is low in terms of exploration degree.Based on the sparsely drilled wells,it is difficult to predict reservoirs,identify and depict stratigraphic-lithologic traps,and identify the complex lithologic reservoirs.These difficulties cannot be solved by conventional geologic means.Therefore,three key techniques were developed via the comprehensive study of petroleum geology and technical campaign,including the geology-seismic integrated prediction of reservoirs guided by ageological model,the identification and depiction of stratigraphic-lithologic traps under the fine sequence stratigraphic framework,and the lithological identification of complex lithologic reservoirs.Their applications have resulted in quite good exploration consequences in Qinnan sag.Many stratigraphic-lithologic reservoirs were discovered,such as QHD29-2 W and QHD29-2E.A series of good potential stratigraphic-lithologic traps were identified.These key techniques can play a significant role in the further exploration for stratigraphic-lithologic reservoirs in Qinnan sag,and provide the reference basis for stratigraphic-lithologic reservoir exploration in other areas.
引文
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[15]陈海清,杨波,寿建峰,等.沉积物源的综合识别与岩性圈闭的确定:以柴达木盆地七个泉地区为例[J].石油地球物理勘探,2007,42(3):283-289.Chen Haiqing,Yang Bo,Shou Jianfeng,et al.Comprehensive identification of sedimentary derivation and determination of lithologic trap:an example of Qigequan area in Qaidam basin[J].Oil Geophysical Prospecting,2007,42(3):283-289.
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[2]张善文.济阳坳陷第三系隐蔽油气藏勘探理论与实践[J].石油与天然气地质,2006,27(6):731-740.Zhang Shanwen.Exploration theory and practice of the Tertiary subtle reservoirs in Jiyang depression[J].Oil and Gas Geology,2006,27(6):731-740.
[3]周海民,董月霞,谢占安,等.断陷盆地精细勘探:渤海湾盆地南堡凹陷精细勘探实践与认识[M].北京:石油工业出版社,2004.Zhou Haimin,Dong Yuexia,Xie Zhan’an,et al.Fine exploration in faulted basin:the practice and recognition of fine exploration in Nanpu depression,Bohai Bay basin[M].Beijing:Petroleum Industry Press,2004.
[4]杜金虎.二连盆地隐蔽油藏勘探[M].北京:石油工业出版社,2003.Du Jinhu.Exploration of subtle oil reservoir in Erlian basin[M].Beijing:Petroleum Industry Press,2003.
[5]杜金虎,易士威,王权,等.华北油田隐蔽油藏勘探实践与认识[J].中国石油勘探,2003,8(1):1-10.Du Jinhu,Yi Shiwei,Wang Quan,et al.In-depth study and exploration practice of subtle oil reservoirs of Huabei oilfield[J].China Petroleum Exploration,2003,8(1):1-10.
[6]杜家元,施和生,丁琳,等.珠江口盆地(东部)地层岩性油气藏勘探有利区域分析[J].中国海上油气,2014,26(3):30-36.Du Jiayuan,Shi Hesheng,Ding Lin,et al.An analysis of favorable exploration areas for stratigraphic-lithologic hydrocarbon accumulation in the eastern Pearl River Mouth basin[J].China Offshore Oil and Gas,2014,26(3):30-36.
[7]周心怀,赖维成,杜晓峰,等.渤海海域隐蔽油气藏勘探关键技术及其应用成效[J].中国海上油气,2012,24(增刊1):11-18.Zhou Xinhuai,Lai Weicheng,Du Xiaofeng,et al.Some key exploration techniques for the subtle reservoirs and their application in Bohai water[J].China Offshore Oil and Gas,2012,24(S1):11-18.
[8]魏刚,薛永安,柴永波,等.秦南凹陷油气勘探思路创新与突破[J].中国海上油气,2012,24(3):7-11.Wei Gang,Xue Yongan,Chai Yongbo,et al.Philosophy innovations and a breakthrough in petroleum exploration in Qinnan sag[J].China Offshore Oil and Gas,2012,24(3):7-11.
[9]徐长贵,赖维成.渤海古近系中深层储层预测技术及其应用[J].中国海上油气,2005,17(4):231-236.Xu Changgui,Lai Weicheng.Predication technologies of Paleogene mid-deep reservoir and their application in Bohai sea[J].China Offshore Oil and Gas,2005,17(4):231-236.
[10]赖维成,徐长贵,于水,等.渤海海域地质-地球物理储层预测技术及其应用[J].中国海上油气,2006,18(4):217-222.Lai Weicheng,Xu Changgui,Yu Shui,et al.A geological-geophysical technique to predict reservoir and its application in Bohai sea[J].China Offshore Oil and Gas,2006,18(4):217-222.
[11]徐长贵,赖维成,薛永安,等.古地貌分析在渤海古近系储层预测中的应用[J].石油勘探与开发,2004,31(5):53-56.Xu Changgui,Lai Weicheng,Xue Yongan,et al.Palaeo-geomorphology analysis for the Paleogene reservoir prediction in Bohai Sea area[J].Petroleum Exploraion and Development,2004,31(5):53-56.
[12]赖维成,徐长贵,王晓刚,等.秦南凹陷古近系层序地层和沉积体系研究及油气勘探方向探讨[J].中国海上油气,2007,19(5):300-305.Lai Weicheng,Xu Changgui,Wang Xiaogang,et al.A study on Paleogene sequence stratigraphy and sedimentary systems and a discussion on hydrocarbon exploration directions in Qinnan depression[J].China Offshore Oil and Gas,2007,19(5):300-305.
[13]赖维成,宋章强,周心怀,等.“动态物源”控砂模式[J].石油勘探与开发,2010,37(6):763-768.Lai Weicheng,Song Zhangqiang,Zhou Xinhuai,et al.Model of dynamic source controlling sand[J].Petroleum Exploration and Development,2010,37(6):763-768.
[14]赵红格,刘池洋.物源分析方法与研究进展[J].沉积学报,2003,21(3):409-415.Zhao Hongge,Liu Chiyang.Approaches and prospects of provenance analysis[J].Acta Sedimentologica Sinica,2003,21(3):409-415.
[15]陈海清,杨波,寿建峰,等.沉积物源的综合识别与岩性圈闭的确定:以柴达木盆地七个泉地区为例[J].石油地球物理勘探,2007,42(3):283-289.Chen Haiqing,Yang Bo,Shou Jianfeng,et al.Comprehensive identification of sedimentary derivation and determination of lithologic trap:an example of Qigequan area in Qaidam basin[J].Oil Geophysical Prospecting,2007,42(3):283-289.
[16]徐长贵.陆相断陷盆地源-汇时空耦合控砂原理:基本思想、概念体系及控砂模式[J].中国海上油气,2013,25(4):1-11.Xu Changgui.Controlling sand principle of source-sink coupling in time and space in continental rift basins:basic idea,conceptual systems and controlling sand models[J].China Offshore Oil and Gas,2013,25(4):1-11.
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