深层高孔渗碳酸盐岩储层岩相识别模式与应用——以普光气田为例
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摘要
普光气田储层岩性岩相复杂、埋藏深,非均质性强,利用地震资料进行高孔渗储层预测难度大。据该区10口井的测井资料统计,该区存在两类9种储层,其中鲕粒亚相、砂屑砾屑亚相、生物礁亚相为有利的高孔渗储层类型。本文以高精度储层反演成果为主线,结合岩性岩相、区域沉积背景分析,依据不同相带在反演剖面上的外部形态、内部结构以及与围岩的关系,建立了普光气田主体高孔渗储层相带预测模式,预测了普光气田有利的高孔渗储层分布,为该区进一步勘探提供了依据。
It is very difficult to predict of deep high-porosity and high-permeability reservoirs in Puguang Gas Field by seismic data due to their complex lithology,lithofacies and strong anisotropy.Based on logging data of 10 wells in the gas field,two categories of reservoirs exists,which include nine kinds of reservoirs,among of which oolite subfacies,sand-gravel subfacies and reef subfacies are beneficial reservoir types of high porosity and high permeability.In this work,a lithofacies identification model for deep high-porosity and high-permeability reservoir is proposed based on high-accuracy inversion.Combining lithofacies and regional sedimentary setting analysis,external feature,internal structure and relationship with surrounding rocks,high-porosity and high-permeability carbonate reservoirs in Puguang Gas Field are predicted for further exploration.
It is very difficult to predict of deep high-porosity and high-permeability reservoirs in Puguang Gas Field by seismic data due to their complex lithology,lithofacies and strong anisotropy.Based on logging data of 10 wells in the gas field,two categories of reservoirs exists,which include nine kinds of reservoirs,among of which oolite subfacies,sand-gravel subfacies and reef subfacies are beneficial reservoir types of high porosity and high permeability.In this work,a lithofacies identification model for deep high-porosity and high-permeability reservoir is proposed based on high-accuracy inversion.Combining lithofacies and regional sedimentary setting analysis,external feature,internal structure and relationship with surrounding rocks,high-porosity and high-permeability carbonate reservoirs in Puguang Gas Field are predicted for further exploration.
引文
[1]王根海.中国南方海相地层油气勘探现状及建议.石油学报,2000,21(5):22~27Wang Gen-hai.The petroleumexploration present sit-uation and proposes of marine facies stratigraphy inSouth China.Acta Petroleum Sinica,2000,21(5):22~27
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[5]黄思静,胡作维.四川盆地东北部三叠系飞仙关组碳酸盐岩成岩作用和白云岩成因的研究现状和存在问题.地球科学进展,2007,19(5):5~9Huang Si-jing,Hu Zuo-wei.The study present situa-tion and problemabout carbonate rock diagenesis anddolomite genesis of Triassic Feixianguan formation inthe east-north region of Sichuan basin.Advance ofGeoscience,2007,19(5):5~9
[6]郑荣才,胡忠贵.川东北地区长兴组白云岩储层的成因研究.矿物岩石,2007,23(4):24~28Zheng Rong-cai,Hu Zhong-gui.The genesis study a-bout dolomite reservoirs in Feixianguan formation inthe east-north region of Sichuan Basin.Journal ofMineral and Rock,2007,23(4):24~28
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[8]夏宏泉.鲕粒碳酸盐岩储层的测井识别研究.西南石油学院学报,2001,23(2):19~22Xia Hong-quan.Logging identification research abou-toolite carbonate rock reservoirs.Journal of West-south PetroleumInstitute,2001,23(2):19~22
[9]包世海,张秀平.川东北部飞仙关组鲕滩储层含气性识别方法.天然气工业,2003,27(1):31~34Bao Shi-hai,Zhang Xiu-ping.Gas potential identifica-tion of the oolitic beach reservoirs in Feixianguan for-mationin the north part of East Sichuan.Journal ofNatural Gas Industry,2003,27(1):31~34
[10]方甲中,吴林刚,高岗等.滨里海盆地碳酸盐岩储集层沉积相与类型——以让纳若尔油田石炭系KT-Ⅱ含油层系为例.石油勘探与开发,2008,35(4):498~508Fang Jia-zhong,Wu Lin-gang,Gao gang et al.Sedi-mentary facies and types of carbonate rock reservoirin Caspian Seashore Basin:A case from Carbonifer-ous KT-ⅡMember in Zahnanor Oilfield.PetroleumExploration and Development,2008,35(4):498~508
[11]刘宏,蔡正旗,谭秀成等.川东高陡构造薄层碳酸盐岩裂缝性储集层预测.石油勘探与开发,2008,35(4):431~436Liu Hong,Cai Zheng-qi,Tan Xiu-cheng et al.Forecas-ting of fracture reservoirs in thin carbonate rocks of pre-cipitous structure belt,East Sichuan.PetroleumExplo-ration and Development,2008,35(4):431~436
[2]李国玉.海相沉积岩是中国石油工业未来的希望.海相油气地质,2005,27(1):1~5Li Guo-yu.Marine facies depositionis the future hopeof petroleumindustry of china.Marine Petroleum Ge-ology,2005,27(1):1~5
[3]高瑞琪,赵政章.中国油气新区勘探,第五卷,中国南方海相油气地质及勘探前景.北京:石油工业出版社,2001
[4]蔡勋育,马永生.普光气田下三叠统飞仙关组储层特征.石油天然气学报,2005,23(1):7~10Cai Xun-yu,Ma Yong-sheng.The reservoir character-istics of down Triassic Feixianguan formation of Pu-Gang gas field.Journal of Petroleum and NaturalGas,2005,23(1):7~10
[5]黄思静,胡作维.四川盆地东北部三叠系飞仙关组碳酸盐岩成岩作用和白云岩成因的研究现状和存在问题.地球科学进展,2007,19(5):5~9Huang Si-jing,Hu Zuo-wei.The study present situa-tion and problemabout carbonate rock diagenesis anddolomite genesis of Triassic Feixianguan formation inthe east-north region of Sichuan basin.Advance ofGeoscience,2007,19(5):5~9
[6]郑荣才,胡忠贵.川东北地区长兴组白云岩储层的成因研究.矿物岩石,2007,23(4):24~28Zheng Rong-cai,Hu Zhong-gui.The genesis study a-bout dolomite reservoirs in Feixianguan formation inthe east-north region of Sichuan Basin.Journal ofMineral and Rock,2007,23(4):24~28
[7]黄捍东,罗群.地震相控非线性随机反演研究与应用.石油地球物理勘探,2007,42(6):694~698Huang Han-dong,Luo Qun.Study and application ofnonlinear randominversion using seismic facies con-trol.OGP,2007,42(6):694~698
[8]夏宏泉.鲕粒碳酸盐岩储层的测井识别研究.西南石油学院学报,2001,23(2):19~22Xia Hong-quan.Logging identification research abou-toolite carbonate rock reservoirs.Journal of West-south PetroleumInstitute,2001,23(2):19~22
[9]包世海,张秀平.川东北部飞仙关组鲕滩储层含气性识别方法.天然气工业,2003,27(1):31~34Bao Shi-hai,Zhang Xiu-ping.Gas potential identifica-tion of the oolitic beach reservoirs in Feixianguan for-mationin the north part of East Sichuan.Journal ofNatural Gas Industry,2003,27(1):31~34
[10]方甲中,吴林刚,高岗等.滨里海盆地碳酸盐岩储集层沉积相与类型——以让纳若尔油田石炭系KT-Ⅱ含油层系为例.石油勘探与开发,2008,35(4):498~508Fang Jia-zhong,Wu Lin-gang,Gao gang et al.Sedi-mentary facies and types of carbonate rock reservoirin Caspian Seashore Basin:A case from Carbonifer-ous KT-ⅡMember in Zahnanor Oilfield.PetroleumExploration and Development,2008,35(4):498~508
[11]刘宏,蔡正旗,谭秀成等.川东高陡构造薄层碳酸盐岩裂缝性储集层预测.石油勘探与开发,2008,35(4):431~436Liu Hong,Cai Zheng-qi,Tan Xiu-cheng et al.Forecas-ting of fracture reservoirs in thin carbonate rocks of pre-cipitous structure belt,East Sichuan.PetroleumExplo-ration and Development,2008,35(4):431~436
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