渤海湾渤南洼陷深层湖相滩坝储集层沉积微相预测
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摘要
渤海湾盆地沾化凹陷渤南洼陷古近系沙四段发育湖相碳酸盐岩滩坝储集层,该类储集层具有埋藏深、单层厚度薄、主要为薄互层沉积、岩石类型复杂多样、岩相横向变化大的特点,有效储集层预测是该区油气勘探的主要难题。在对岩相及地震响应特征分析基础上,开发了基于沉积参数的复杂岩相识别新技术,从常规的振幅类、频率类等地震属性分析出发,提取三维地震属性,统计井点处的灰岩百分含量等沉积参数,进而通过建立实际钻井沉积参数与井旁地震属性的拟合关系来反算多种沉积参数的平面特征,再以沉积参数为变量进行聚类分析,以实现对沉积相带的预测。该方法在渤南洼陷古近系沙四段湖相滩坝储集层预测中取得了较好的效果,对其他类型沉积体系的研究也具有借鉴和参考意义。
The lacustrine carbonates are developed in the Paleogene Sha 4 Member of the Bonan Subsag in the Zhanhua Sag of the Bohai Bay Basin.This type of reservoirs is characterized by deep-burial,thin bed,thin alternated bed deposition,complicated rock types,and a dramatic lateral change of lithofacies,so the main problem of its exploration is the identification of effective reservoirs.On the basis of analyzing rock facies and geophysical features,this paper develops a new technique for the prediction of complicated lithofacies based on sedimentary parameters.It begins from the normal seismic attributes analysis such as amplitude and frequency types,extracts the 3D seismic attributes,counts the sedimentary parameters such as the percent of the limestone,and sets up the relationship of the sedimentary parameters from wells and the seismic attributes along wells,and then computes the lateral features of many sedimentary parameters.At last,the cluster analysis is done to predict the sedimentary facies.This technology gets a preferable result in the Sha 4 Member of the Bonan subsag,and it can provide some reference for other types of depositional system.
The lacustrine carbonates are developed in the Paleogene Sha 4 Member of the Bonan Subsag in the Zhanhua Sag of the Bohai Bay Basin.This type of reservoirs is characterized by deep-burial,thin bed,thin alternated bed deposition,complicated rock types,and a dramatic lateral change of lithofacies,so the main problem of its exploration is the identification of effective reservoirs.On the basis of analyzing rock facies and geophysical features,this paper develops a new technique for the prediction of complicated lithofacies based on sedimentary parameters.It begins from the normal seismic attributes analysis such as amplitude and frequency types,extracts the 3D seismic attributes,counts the sedimentary parameters such as the percent of the limestone,and sets up the relationship of the sedimentary parameters from wells and the seismic attributes along wells,and then computes the lateral features of many sedimentary parameters.At last,the cluster analysis is done to predict the sedimentary facies.This technology gets a preferable result in the Sha 4 Member of the Bonan subsag,and it can provide some reference for other types of depositional system.
引文
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[13]刘昭茜,梅廉夫,郭彤楼,等.川东北地区海相碳酸盐岩油气成藏作用及其差异性:以普光、毛坝气藏为例[J].石油勘探与开发,2009,36(5):552-561.Liu Zhaoqian,Mei Lianfu,Guo Tonglou,et al.Characteristics and differences of hydrocarbon accumulations in marine carbonate rocks,northeast Sichuan Basin:A case study from Puguang and Maoba gas fields[J].Petroleum Exploration and Development,2009,36(5):552-561.
[14]张云银,张建宁.准噶尔车排子地区沙湾组含油砂岩地震正演模拟[J].石油勘探与开发,2010,37(1):38-42.Zhang Yunyin,Zhang Jianning.Seismic forward modeling of the oil-bearing sand in Shawan Formation,Chepaizi region,Junggar Basin,NW China[J].Petroleum Exploration and Development,2010,37(1):38-42.
[15]孙玉梅,李友川,黄正吉.部分近海湖相烃源岩有机质异常碳同位素组成[J].石油勘探与开发,2009,36(5):609-616.Sun Yumei,Li Youchuan,Huang Zhengji.Abnormal carbon isotopic compositions in organic matter of lacustrine source rocks close to sea[J].Petroleum Exploration and Development,2009,36(5):609-616.
[2]陈鑫,钟建华,袁静,等.渤南洼陷古近系高岭石发育特征及转化机理[J].石油勘探与开发,2009,36(4):456-462.Chen Xin,Zhong Jianhua,Yuan Jing,et al.Development and formation of Paleogene kaolinite,Bonan subsag[J].Petroleum Exploration and Development,2009,36(4):456-462.
[3]王永刚,乐有喜,张军华,等.地震属性分析技术[M].东营:中国石油大学出版社,2006.Wang Yonggang,Yue Youxi,Zhang Junhua,et al.Seismic attribute analysis technology[M].Dongying:China Petroleum University Press,2006.
[4]李丕龙,庞雄奇.陆相断陷盆地隐蔽油气藏形成[M].北京:石油工业出版社,2004.Li Pilong,Pang Xiongqi.Rifted basin formed subtle reservoirs[M].Beijing:Petroleum Industry Press,2004.
[5]赵澄林,朱筱敏.沉积岩石学[M].北京:石油工业出版社,2004.Zhao Chenglin,Zhu Xiaomin.Sedimentary petrology[M].Beijing:Petroleum Industry Press,2004.
[6]孙建孟,王永刚.地球物理资料综合应用[M].东营:石油大学出版社,2001.Sun Jianmeng,Wang Yonggang.General application of geophysical data[M].Dongying:China Petroleum University Press,2001.
[7]徐安娜,董月霞,韩大匡,等.地震、测井和地质综合一体化油藏描述与评价:以南堡1号构造东营组一段油藏为例[J].石油勘探与开发,2009,36(5):541-551.Xu Anna,Dong Yuexia,Han Dakuang,et al.Integrated description and evaluation of reservoirs based on seismic,logging and geological data:Taking Dongying Formation Member1oil reservoir of No.1structure,Nanpu Sag as an example[J].Petroleum Exploration and Development,2009,36(5):541-551.
[8]高哲民,白应甫,徐筱冰.地震相模式识别[J].石油物探,1987,26(4):1-5.Gao Zhemin,Bai Yingfu,Xu Xiaobing.Seismic phase by pattern recognition[J].Geophysical Prospecting for Petroleum,1987,26(4):1-5.
[9]刘传虎.地震属性与非构造油气藏勘探[J].新疆石油地质,2005,26(5):485-488.Liu Chuanhu.Seismic attribute and non-structural reservoir exploration[J].Xinjiang Petroleum Geology,2005,26(5):485-488.
[10]张朝军,贾承造,李本亮,等.塔北隆起中西部地区古岩溶与油气聚集[J].石油勘探与开发,2010,37(3):263-269.Zhang Chaojun,Jia Chengzao,Li Benliang,et al.Ancient karsts and hydrocarbon accumulation in the middle and western parts of the North Tarim uplift,NW China[J].Petroleum Exploration and Development,2010,37(3):263-269.
[11]吴键,李凡华.三维地质建模与地震反演结合预测含油单砂体[J].石油勘探与开发,2009,36(5):623-627.Wu Jian,Li Fanhua.Prediction of oil-bearing single sandbody by3Dgeological modeling combined with seismic inversion[J].Petroleum Exploration and Development,2009,36(5):623-627.
[12]朱广生.地震资料储层预测方法[M].北京:石油工业出版社,2003.Zhu Guangsheng.Information on seismic reservoir prediction method[M].Beijing:Petroleum Industry Press,2003.
[13]刘昭茜,梅廉夫,郭彤楼,等.川东北地区海相碳酸盐岩油气成藏作用及其差异性:以普光、毛坝气藏为例[J].石油勘探与开发,2009,36(5):552-561.Liu Zhaoqian,Mei Lianfu,Guo Tonglou,et al.Characteristics and differences of hydrocarbon accumulations in marine carbonate rocks,northeast Sichuan Basin:A case study from Puguang and Maoba gas fields[J].Petroleum Exploration and Development,2009,36(5):552-561.
[14]张云银,张建宁.准噶尔车排子地区沙湾组含油砂岩地震正演模拟[J].石油勘探与开发,2010,37(1):38-42.Zhang Yunyin,Zhang Jianning.Seismic forward modeling of the oil-bearing sand in Shawan Formation,Chepaizi region,Junggar Basin,NW China[J].Petroleum Exploration and Development,2010,37(1):38-42.
[15]孙玉梅,李友川,黄正吉.部分近海湖相烃源岩有机质异常碳同位素组成[J].石油勘探与开发,2009,36(5):609-616.Sun Yumei,Li Youchuan,Huang Zhengji.Abnormal carbon isotopic compositions in organic matter of lacustrine source rocks close to sea[J].Petroleum Exploration and Development,2009,36(5):609-616.
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