黄河口凹陷南坡岩浆岩特征及储层预测
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摘要
黄河口凹陷南坡古近系岩浆岩内钻遇良好油气显示,但由于岩浆岩时空展布差异大、岩性复杂、非均质性强,导致地震资料信噪比低、地震响应差等,岩浆岩有利储层预测难度较大。为此,通过系统分析壁心、测井及地震等资料,在建立岩浆岩岩相—测井相—地震相"三相"耦合关系的基础上,应用方差体、振幅类属性和波阻抗反演等方法有效刻画岩浆岩展布特征。基于敏感地震属性、反演结果与岩浆岩岩性组合关系,明确岩浆活动时空演化史并构建不同时期的岩浆活动模式。最终综合壁心、野外露头资料,在详细分析岩浆岩储层特征和主控因素的基础上,应用古地貌背景约束下的振幅属性和反演等方法,有效刻画了岩浆岩有利储层发育区,并得到了实钻验证。
Good oil and gas shows have been discovered in Eogene magmatic rocks in the southern slope of Huanghekou sag,but due to the large differences of magmatic rock distribution,complex lithology and strong heterogeneity,the signalto-noise ratio of seismic data is low and the seismic response is poor,bringing difficulties to favorable reservoir prediction.In order to solve the above problems,based on the system analysis of sidewall core and logging and seismic data,"threephase"coupling relationship between magmatic rock facies,well logging facies and seismic facies was established,which helps to describe the distribution characteristics of magmatic rocks by using variance and amplitude attributes and wave impedance inversion effectively. Based on the relationship among sensitive seismic attributes,inversion and magmatic rock lithology,the temporal and spatial evolution history of magmatic activity was defined,and the patterns of magma activity were established in different periods. According to sidewall core and outcrop data,the magmatic rock reservoir features and main controlling factors of reservoir were analyzed,which helps to use root mean square amplitude attribute and wave impedance inversion method to describe the favorable reservoir of magmatic rocks under the constraint of the ancient landform background,and the prediction result was proved by drilling.
Good oil and gas shows have been discovered in Eogene magmatic rocks in the southern slope of Huanghekou sag,but due to the large differences of magmatic rock distribution,complex lithology and strong heterogeneity,the signalto-noise ratio of seismic data is low and the seismic response is poor,bringing difficulties to favorable reservoir prediction.In order to solve the above problems,based on the system analysis of sidewall core and logging and seismic data,"threephase"coupling relationship between magmatic rock facies,well logging facies and seismic facies was established,which helps to describe the distribution characteristics of magmatic rocks by using variance and amplitude attributes and wave impedance inversion effectively. Based on the relationship among sensitive seismic attributes,inversion and magmatic rock lithology,the temporal and spatial evolution history of magmatic activity was defined,and the patterns of magma activity were established in different periods. According to sidewall core and outcrop data,the magmatic rock reservoir features and main controlling factors of reservoir were analyzed,which helps to use root mean square amplitude attribute and wave impedance inversion method to describe the favorable reservoir of magmatic rocks under the constraint of the ancient landform background,and the prediction result was proved by drilling.
引文
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[2]苗春欣,傅爱兵,关丽,等.车排子地区火山岩储集空间发育特征及有利区带预测[J].油气地质与采收率,2015,22(6):27-31.Miao Chunxin,Fu Aibing,Guan Li,et al.Reservoir space characteristics and favorable area prediction of volcanic rocks in Chepaizi area,Junggar Basin[J].Petroleum Geology and Recovery Efficiency,2015,22(6):27-31.
[3]张子枢,吴邦辉.国内外火山岩油气藏研究现状及勘探技术调研[J].天然气勘探与开发,1994,16(1):1-26.Zhang Zishu,Wu Banghui.Research status and exploration technique investigation of volcanic rock reservoirs in the world[J].Natural Gas Exploration and Development,1994,16(1):1-26.
[4]徐颖新,尚华,李秀珍,等.火山岩地震解释技术在松辽盆地长岭断陷深层天然气勘探中的应用[J].石油地球物理勘探,2008,43(增刊1):63-68.Xu Yingxin,Shang Hua,Li Xiuzhen,et al.Application of volcanic rock seismic interpretation technique to deep natural gas exploration in Changling fault depression of Songliao basin[J].Oil Geophysical Prospecting,2008,43(S1):63-68.
[5]郎晓玲,韩龙,王世瑞,等.XB地区火山岩岩相划分及储层精细刻画[J].石油地球物理勘探,2010,45(2):272-277.Lang Xiaoling,Han Long,Wang Shirui,et al.Lithofacies classification and reservoir delineation for volcanic rock in XB area[J].Oil Geophysical Prospecting,2010,45(2):272-277.
[6]李希元,景田,吴昊.火山岩的地震波场特征及其岩相的识别方法[J].大庆石油地质与开发,2016,35(2):121-126.Li Xiyuan,Jing Tian,Wu Hao.Identifying method of the seismic wave field characteristics and their lithofacieses for the volcanic rocks[J].Petroleum Geology&Oilfield Development in Daqing,2016,35(2):121-126.
[7]李钜源.渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律[J].石油实验地质,2015,37(5):566-574.Li Juyuan.Pore characteristics and their evolution in Paleogene mud shales,Dongying Sag,Bohai Bay Basin[J].Petroleum Geology&Experiment,2015,37(5):566-574.
[8]左国平,屠小龙,夏九峰,等.大丰兴化地区火山岩地震识别方法研究[J].石油物探,2011,50(3):252-259.Zuo Guoping,Tu Xiaolong,Xia Jiufeng,et al.Seismic identification of volcanic in Dafengxinghua area[J].Geophysical Prospecting for Petroleum,2011,50(3):252-259.
[9]Sohn Y K,Chough S K.The Udo tuff cone,Cheju Island,South Korea:transformation of pyroclastic fall into debris fall and grain flow on a steep volcanic cone slope[J].Sedimentology,1993,40(4):769-786.
[10]王璞珺,印长海,朱如凯,等.中基性火山作用喷出物类型、特征与成因[J].吉林大学学报:地球科学版,2010,40(3):469-481.Wang Pujun,Yin Changhai,Zhu Rukai,et al.Classification,description and interpretation of the volcanic products:ancient and modern examples from China[J].Journal of Jilin University:Earth Science Edition,2010,40(3):469-481.
[11]王璞珺,衣健,陈崇阳,等.火山地层学与火山架构:以长白山火山为例[J].吉林大学学报:地球科学版,2013,43(2):319-339.Wang Pujun,Yi Jian,Chen Chongyang,et al.Volcanostratigraphy and volcanic architecture of the Changbaishan volcanos,NE China[J].Journal of Jilin University:Earth Science Edition,2013,43(2):319-339.
[12]邹才能,赵文智,贾承造,等.中国沉积盆地火山岩油气藏形成与分布[J].石油勘探与开发,2008,35(3):257-271.Zou Caineng,Zhao Wenzhi,Jia Chengzao,et al.Formation and distribution of volcanic hydrocarbon reservoirs in sedimentary basins of China[J].Petroleum Exploration and Development,2008,35(3):257-271.
[13]侯连华,朱如凯,赵霞,等.中国火山岩油气藏控制因素及分布规律[J].中国工程科学,2012,14(6):77-86.Hou Lianhua,Zhu Rukai,Zhao Xia,et al.The control factors and distribution laws of volcanic oil and gas reservoir in China[J].Engineering Sciences,2012,14(6):77-86.
[14]邹才能,侯连华,陶士振,等.新疆北部石炭系大型火山岩风化体结构与地层油气成藏机制[J].中国科学:D辑地球科学,2011,41(11):1 613-1 626.Zou Caineng,Hou Lianhua,Tao Shizhen,et al.Hydrocarbon accumulation mechanism and structure of large-scale volcanic weathering curst of the carboniferous in northern Xinjiang,China[J].Science China:Series D Earth Science,2011,41(11):1 613-1 626.
[15]王志萍,吕丁友,王保全.渤中地区火山岩特征及其与断裂关系[J].特种油气藏,2015,22(4):20-24.Wang Zhiping,LüDingyou,Wang Baoquan.Features of volcanic rock in central Bohai area and its relationship with fracture[J].Special Oil&Gas Reservoirs,2015,22(4):20-24.
[16]修昊,唐华风,黄露玫.松辽盆地英台断陷沉火山碎屑岩储层特征及控制因素[J].油气地质与采收率,2016,23(3):33-39.Xiu Hao,Tang Huafeng,Huang Lumei.Characteristics and influential factors of sedimentary pyroclastic rocks in Yingtai faulted depression,Songliao Basin[J].Petroleum Geology and Recovery Efficiency,2016,23(3):33-39.
[17]张占文,陈永成.辽河盆地东部凹陷天然气盖层评价[J].沉积学报,1996,14(4):102-107.Zhang Zhanwen,Chen Yongcheng.Caprock evaluation of natural gas reservoir within the eastern depression,Liaohe Rift[J].Acta Sedimentologica Sinica,1996,14(4):102-107.