开江—梁平台内海槽东段长兴组礁滩相储层识别标志及其预测
摘要
川东上二叠统长兴组生物礁滩储集体位于开江—梁平台内海槽东段。研究区发育有台内海槽(深水盆地)、台地前缘缓斜坡、台地边缘生物礁滩和开阔台地四个相带,其中台地边缘生物礁滩相地层为最重要的油气勘探层段。长兴组储层岩性主要为礁滩相白云岩,具有分布面积广和厚度较大的特点。综合利用地质、钻井、地震等资料,并以岩芯观察描述、薄片鉴定和沉积相分析为依据,建立了识别礁滩相储层的测井相和地震相模型。在地震相模型中,确定地震剖面中波阻杂乱、中断和下拉的烟囱效应,是寻找礁滩相储层和气藏的有效标志。在此基础上,以建立礁滩体地质模型作为预测有利生物礁滩相带的地震反演约束条件,结合地质资料预测的有利生物礁滩储集体及白云岩厚度分布图,最终圈定出有利储层发育区和优选勘探目标区。
The reef and shoal facies reservoir in Changxing Formation, Upper Permian, is located in Kaijiang-Liangping intraplatform trough. In the region of interest the intraplatform trough(deep water basin), platform slop, platform edge and open platform sedimentary facies are developed. The platform edge is the important layer for oil and gas exploration. The lithology of the reservoirs in Changxing Formation is mainly reef facies dolomites, shoal facies dolomites and crystal dolomites, and is characterized by huge distribution area and thick reservoirs. According to the analyses of core observation, thin sections and sedimentary facies and by using geology, bore wells and seismic data, the electrofacies and seismic facies models are established to recognize the reef and shoal facies reservoirs. The chimney effect which is used to confirm the mess of wave resistance, interception and pulldown in seismic cross section is an effective sign of looking for reef and shoal facies reservoirs anabled gas reservoirs. Based on it, reef and shoal geologic model acting to seismic inversion constraining condition of predicting favorablereef and shoal facies zone, combined with the thickness distribution map of dolomites,the favorable area for reservoir evaluation is estimated.
The reef and shoal facies reservoir in Changxing Formation, Upper Permian, is located in Kaijiang-Liangping intraplatform trough. In the region of interest the intraplatform trough(deep water basin), platform slop, platform edge and open platform sedimentary facies are developed. The platform edge is the important layer for oil and gas exploration. The lithology of the reservoirs in Changxing Formation is mainly reef facies dolomites, shoal facies dolomites and crystal dolomites, and is characterized by huge distribution area and thick reservoirs. According to the analyses of core observation, thin sections and sedimentary facies and by using geology, bore wells and seismic data, the electrofacies and seismic facies models are established to recognize the reef and shoal facies reservoirs. The chimney effect which is used to confirm the mess of wave resistance, interception and pulldown in seismic cross section is an effective sign of looking for reef and shoal facies reservoirs anabled gas reservoirs. Based on it, reef and shoal geologic model acting to seismic inversion constraining condition of predicting favorablereef and shoal facies zone, combined with the thickness distribution map of dolomites,the favorable area for reservoir evaluation is estimated.
引文
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Chen Jinren and Yin Yuguang.1981.Exploration and practice of Changxin organic reef reservoirs,Jiannan Gas Field[J].Natural Gas Exploration and Development,10(2):27-33.(in Chinese with English abstract)
Fan Jiasong and Wu Yasheng.2002.Restudies on Permian reefs in eastern Sichuan,China[J].Oil&Gas Geology,2002,23(1):12-18.(in Chinese with English abstract)
Graham R D and Langhorne B S.2006.Structurally controlled hydrothermal dolomite reservoir facies:An overview[J].AAPG Bulletin,(90):1641-1690.
Jiang Zaixing.2003.Sedimentology[M].Beijing:Petroleum Industry Press,404-420.(in Chinese)
Jiang Xiaoguang,Peng Dajun,Chen Jigao,et al.2005.Prediction of organic reefs on the east edge in the near Caspian Sea basin[J].Journal of Chengdu University of Technology(Science&Technology Edition),32(5):492-497.(in Chinese with English abstract)
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Ma Yongsheng,Mou Chuanlong,Guo Tonglou,et al.2005.Sequence stratigraphy and reservoir distribution of the Changxing Formation in northeastern Sichuan basin[J].Earth Science Frontiers,12(3):179-185.(in Chinese with English abstract)
Ma Yongsheng,Mou Chuanlong,Guo Xusheng,et al.2006.Characteristics and framework of the Changxing sedimentation in the northeastern Sichuan basin[J].Geological Review,52(1):25-29.(in Chinese with English abstract)
Mou Chuanlong,Ma Yongsheng,Yu Qian,et al.2005.The oil-gas sources of the Late Permian organic reefal oil-gas pools in the Panlongdong,Xuanhuan,Sichuan[J].Petroleum Geology and Experiments,27(6):570-574.(in Chinese with English abstract)
Mou Chuanlong,Tan Qinyin,Yu Qian,et al.2004.The organic reefs and their reef-forming model for the Upper Permian Changxing Formation in northeastern Sichuan[J].Sedimentary Geology and Tethyan Geology,24(3):65-71.(in Chinese with English abstract)
Wang Ruihua,Mou Chuanlong,Tan Qingying,et al.2006.Diageneticprocesses and environments of the reef shoal dolostones from theChangxing Formation in the Daxian-Xuanhan region,northeasternSichuan[J].Sedimentary Geology and Tethyan Geology,26(1):30-36.(in Chinese with English abstract)
Wang Shenghai and Qiang Zitong.1992.The organic reefs of Upper Permian Changxing Formation in Mt.Huayin,Sichuan[J].Oil&Gas Geology,12(2):147-154.(in Chinese with English abstract)
Wang Yigang,Wen Yingchu and Zhang Fan.1998.Distribution regularities of the organic reefs in Changxing Formation of Upper Permian in east Sichuan[J].Natural Gas Industry,18(6):10-15.(in Chinese with English abstract)
Wang Yigang,Zhang Jing,Yang Yu,et al.1997.Forming mechanism of the Upper Permian organic reefal gas pool in the northeastern part of the Sichuan basin[J].Marine Petroleum Geology,5(1/2):145-152.(in Chinese with English abstract)
Wu Xichun,Liu Xiaozeng,Yang Zhonglun,et al.1990.Organic reefs control the form of reservior in Changxing Formation of Upper Permian in east Sichuan[J].Oil&Gas Geology,11(3):283-296.(in Chinese with English abstract)
Zheng Rongcai,Hu Zhonggui,Feng Qingping,et al.2007.Genesis of dolomite reservoir of the Changxing Formation of Upper Permian,northeast Sichuan basin[J].Journal of Mineralogy and Petrology,27(4):78-84.(in Chinese with English abstract)
陈劲人,银玉光.1981.建南气田长兴组生物礁气藏的勘探实践[J].石油勘探与开发,10(2):27-33.
范嘉松,吴亚生.2002.川东二叠纪生物礁再认识[J].石油与天然气地质,23(1):12-18.
姜在兴.2003.沉积学[M].北京:石油工业出版社,404-420.
蒋晓光,彭大钧,陈季高,等.2005.滨里海盆地东缘生物礁预测研究[J].成都理工大学学报,32(5):492-497.
李国军,郑荣才,唐玉林,等.2007.川东北地区飞仙关组层序—岩相古地理特征[J].岩性油气藏,19(4):64-70.
刘划一,王一刚,杨雨,等.1999.川东上二叠统生物礁气藏多元信息综合预测方法研究[J].天然气工业,19(4):13-18.
马永生,牟传龙,郭彤楼.2005.四川盆地东北部长兴组层序地层与储层分布[J].地学前缘,12(3):179-185.
马永生,牟传龙,郭旭升,等.2006.川东北地区长兴组沉积特征与沉积格局[J].地质论评,52(1):25-29.
牟传龙,马永生,余谦,等.2005.四川宣汉盘龙洞生物礁古油气藏油气源分析[J].石油实验地质,27(6):570-574.
牟传龙,谭钦银,余谦,等.2004.川东北地区上二叠统长兴组生物礁组成及成礁模式[J].沉积与特提斯地质,24(3):65-71.
王瑞华,牟传龙,谭钦银,等.2006.达县—宣汉地区长兴组礁滩白云岩成岩作用与成岩环境研究[J].沉积与特提斯地质,26(1):30-36.
王生海,强子同.1992.四川华蓥山涧水沟上二叠统生物礁[J].石油与天然气地质,12(2):147-154.
王一刚,文应初,张帆.1998.川东地区上二叠统长兴组生物礁分布规律[J].天然气工业,18(6):10-15.
王一刚,张静,杨雨,等.1997.四川盆地东部上二叠统长兴组生物礁气藏形成机理[J].海相油气地质,5(1):145-152.
吴熙纯,刘效曾,杨仲伦,等.1990.川东上二叠统长兴组生物礁控储层的形成[J].石油与天然气地质,11(3):283-296.
郑荣才,胡忠贵,冯青平,等.2007.川东北地区长兴组白云岩储层的成因研究[J].矿物岩石,27(4):78-84.
Chen Jinren and Yin Yuguang.1981.Exploration and practice of Changxin organic reef reservoirs,Jiannan Gas Field[J].Natural Gas Exploration and Development,10(2):27-33.(in Chinese with English abstract)
Fan Jiasong and Wu Yasheng.2002.Restudies on Permian reefs in eastern Sichuan,China[J].Oil&Gas Geology,2002,23(1):12-18.(in Chinese with English abstract)
Graham R D and Langhorne B S.2006.Structurally controlled hydrothermal dolomite reservoir facies:An overview[J].AAPG Bulletin,(90):1641-1690.
Jiang Zaixing.2003.Sedimentology[M].Beijing:Petroleum Industry Press,404-420.(in Chinese)
Jiang Xiaoguang,Peng Dajun,Chen Jigao,et al.2005.Prediction of organic reefs on the east edge in the near Caspian Sea basin[J].Journal of Chengdu University of Technology(Science&Technology Edition),32(5):492-497.(in Chinese with English abstract)
Li Guojun,Zheng Rongcai,Tang Yulin,et al.20007.Sequence-based lithofacies and paleogeography of Lower Triassic Feixianguan Formation in northeastern Sichuan Basin[J].Northwest Oil&Gas Exploration,19(4):64-70.(in Chinese with English abstract)
Liu Huayi,Wang Yigang,Yang Yu,et al.1999.A study of multivariate information comprehensive prediction method for the biohermal gas reservoir in Upper Permian Series in east Sichuan[J].Natural Gas Industry,19(4):13-18.(in Chinese with English abstract)
Ma Yongsheng,Mou Chuanlong,Guo Tonglou,et al.2005.Sequence stratigraphy and reservoir distribution of the Changxing Formation in northeastern Sichuan basin[J].Earth Science Frontiers,12(3):179-185.(in Chinese with English abstract)
Ma Yongsheng,Mou Chuanlong,Guo Xusheng,et al.2006.Characteristics and framework of the Changxing sedimentation in the northeastern Sichuan basin[J].Geological Review,52(1):25-29.(in Chinese with English abstract)
Mou Chuanlong,Ma Yongsheng,Yu Qian,et al.2005.The oil-gas sources of the Late Permian organic reefal oil-gas pools in the Panlongdong,Xuanhuan,Sichuan[J].Petroleum Geology and Experiments,27(6):570-574.(in Chinese with English abstract)
Mou Chuanlong,Tan Qinyin,Yu Qian,et al.2004.The organic reefs and their reef-forming model for the Upper Permian Changxing Formation in northeastern Sichuan[J].Sedimentary Geology and Tethyan Geology,24(3):65-71.(in Chinese with English abstract)
Wang Ruihua,Mou Chuanlong,Tan Qingying,et al.2006.Diageneticprocesses and environments of the reef shoal dolostones from theChangxing Formation in the Daxian-Xuanhan region,northeasternSichuan[J].Sedimentary Geology and Tethyan Geology,26(1):30-36.(in Chinese with English abstract)
Wang Shenghai and Qiang Zitong.1992.The organic reefs of Upper Permian Changxing Formation in Mt.Huayin,Sichuan[J].Oil&Gas Geology,12(2):147-154.(in Chinese with English abstract)
Wang Yigang,Wen Yingchu and Zhang Fan.1998.Distribution regularities of the organic reefs in Changxing Formation of Upper Permian in east Sichuan[J].Natural Gas Industry,18(6):10-15.(in Chinese with English abstract)
Wang Yigang,Zhang Jing,Yang Yu,et al.1997.Forming mechanism of the Upper Permian organic reefal gas pool in the northeastern part of the Sichuan basin[J].Marine Petroleum Geology,5(1/2):145-152.(in Chinese with English abstract)
Wu Xichun,Liu Xiaozeng,Yang Zhonglun,et al.1990.Organic reefs control the form of reservior in Changxing Formation of Upper Permian in east Sichuan[J].Oil&Gas Geology,11(3):283-296.(in Chinese with English abstract)
Zheng Rongcai,Hu Zhonggui,Feng Qingping,et al.2007.Genesis of dolomite reservoir of the Changxing Formation of Upper Permian,northeast Sichuan basin[J].Journal of Mineralogy and Petrology,27(4):78-84.(in Chinese with English abstract)
陈劲人,银玉光.1981.建南气田长兴组生物礁气藏的勘探实践[J].石油勘探与开发,10(2):27-33.
范嘉松,吴亚生.2002.川东二叠纪生物礁再认识[J].石油与天然气地质,23(1):12-18.
姜在兴.2003.沉积学[M].北京:石油工业出版社,404-420.
蒋晓光,彭大钧,陈季高,等.2005.滨里海盆地东缘生物礁预测研究[J].成都理工大学学报,32(5):492-497.
李国军,郑荣才,唐玉林,等.2007.川东北地区飞仙关组层序—岩相古地理特征[J].岩性油气藏,19(4):64-70.
刘划一,王一刚,杨雨,等.1999.川东上二叠统生物礁气藏多元信息综合预测方法研究[J].天然气工业,19(4):13-18.
马永生,牟传龙,郭彤楼.2005.四川盆地东北部长兴组层序地层与储层分布[J].地学前缘,12(3):179-185.
马永生,牟传龙,郭旭升,等.2006.川东北地区长兴组沉积特征与沉积格局[J].地质论评,52(1):25-29.
牟传龙,马永生,余谦,等.2005.四川宣汉盘龙洞生物礁古油气藏油气源分析[J].石油实验地质,27(6):570-574.
牟传龙,谭钦银,余谦,等.2004.川东北地区上二叠统长兴组生物礁组成及成礁模式[J].沉积与特提斯地质,24(3):65-71.
王瑞华,牟传龙,谭钦银,等.2006.达县—宣汉地区长兴组礁滩白云岩成岩作用与成岩环境研究[J].沉积与特提斯地质,26(1):30-36.
王生海,强子同.1992.四川华蓥山涧水沟上二叠统生物礁[J].石油与天然气地质,12(2):147-154.
王一刚,文应初,张帆.1998.川东地区上二叠统长兴组生物礁分布规律[J].天然气工业,18(6):10-15.
王一刚,张静,杨雨,等.1997.四川盆地东部上二叠统长兴组生物礁气藏形成机理[J].海相油气地质,5(1):145-152.
吴熙纯,刘效曾,杨仲伦,等.1990.川东上二叠统长兴组生物礁控储层的形成[J].石油与天然气地质,11(3):283-296.
郑荣才,胡忠贵,冯青平,等.2007.川东北地区长兴组白云岩储层的成因研究[J].矿物岩石,27(4):78-84.
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