辽河盆地火成岩储层评价标准与有效储层物性下限
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摘要
依据辽河盆地东部凹陷40口代表性探井的物性测试、含油产状及试油结果等资料,综合运用经验系数法、最小含油喉道半径法、含油产状法和试油法确定研究区有效储层物性下限,并对适用于研究区火成岩的储层分类标准进行研究。结果表明:当孔隙度小于3%或者渗透率小于0.03×10-3μm2时,通常不会形成工业或低产油气层,据此将这两个物性数值定为火成岩有效储层的孔隙度和渗透率下限;根据孔隙度、渗透率、含油产状和试油结果等参数将火成岩储层标准划分为4类,分别为高孔高渗(I类)、较高孔较高渗(Ⅱ类)、中孔中渗(Ⅲ类)和低孔低渗(Ⅳ类);所确定的储层物性下限和分类指标能够客观反映火成岩储集层的特征,有利于研究区的油气勘探和资源评价。
Based on previous results of the reservoir porosity-permeability,oil-bearing occurrence and oil testing of 40 representative wells in eastern depression Liaohe Basin,the cut-off value of the reservoir physical properties and reasonable evaluation criteria of study area were evaluated using a series of approaches,including empirical coefficient method,irreducible water saturation method,oil occurrence method and formation testing method. The results show that when the porosity is less than 3%,or the permeability is less than 0. 03×10-3μm2,the reservoir usually is dry and does not contain any oil or gas.Therefore 3% porosity and 0. 03×10-3μm2permeability are chosen as the cut-off values for effective reservoirs of the igneous rocks. Based on porosity,permeability,oil-bearing occurrence and oil testing results,the igneous rock reservoirs can be characterized into four classes:( I) high porosity and high permeability,( Ⅱ) high-medium porosity and permeability,( Ⅲ)medium porosity and permeability and( IV) low porosity and permeability. The evaluation criteria and the cut-off values objectively describe the characteristics of igneous rock reservoir and can be applied preferably in decision-making for oil and gas exploration.
Based on previous results of the reservoir porosity-permeability,oil-bearing occurrence and oil testing of 40 representative wells in eastern depression Liaohe Basin,the cut-off value of the reservoir physical properties and reasonable evaluation criteria of study area were evaluated using a series of approaches,including empirical coefficient method,irreducible water saturation method,oil occurrence method and formation testing method. The results show that when the porosity is less than 3%,or the permeability is less than 0. 03×10-3μm2,the reservoir usually is dry and does not contain any oil or gas.Therefore 3% porosity and 0. 03×10-3μm2permeability are chosen as the cut-off values for effective reservoirs of the igneous rocks. Based on porosity,permeability,oil-bearing occurrence and oil testing results,the igneous rock reservoirs can be characterized into four classes:( I) high porosity and high permeability,( Ⅱ) high-medium porosity and permeability,( Ⅲ)medium porosity and permeability and( IV) low porosity and permeability. The evaluation criteria and the cut-off values objectively describe the characteristics of igneous rock reservoir and can be applied preferably in decision-making for oil and gas exploration.
引文
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[2]王璞珺,张功成,蒙启安,等.地震火山地层学及其在我国火山岩盆地中的应用[J].地球物理学报,2011,54(2):597-610.WANG Pujun,ZHANG Gongcheng,MENG Qian,et al.Applications of seismic volcanostratigraphy to the volcanic rifted basins of China[J].Chinese Journal of Geophysics,2011,54(2):597-610.
[3]王岩泉,胡大千,蔡国刚,等.辽河盆地东部凹陷火山岩储层特征与主控因素[J].石油学报,2013,34(5):896-904.WANG Yanquan,HU Daqian,CAI Guogang,et al.Characteristics and controlling factors of Cenozoic volcanic reservoirs in Liaohe Basin,NE China[J].Acta Petrolei Sinica,2013,34(5):896-904.
[4]宋占东,查明,赵卫卫,等.惠民凹陷阳信洼陷火成岩及其对油气成藏的影响[J].中国石油大学学报(自然科学版),2007,31(2):1-8.SONG Zhandong,ZHA Ming,ZHAO Weiwei,et al.Characteristics of igneous rocks and their effects on hydrocarbon accumulation in Yangxin subsag of Huimin sag[J].Journal of China University of Petroleum(Edition of Natural Science),2007,31(2):1-8.
[5]曲江秀,高长海,查明,等.准噶尔盆地克拉美丽气田石炭系火山岩储层特征及成岩演化[J].中国石油大学学报(自然科学版),2014,38(5):1-8.QU Jiangxiu,GAO Changhai,ZHA Ming,et al.Reservoir characteristics and diagenetic evolution of Carboniferous volcanic rock in Kelameili gas field of Junggar Basin[J].Journal of China University of Petroleum(Edition of Natural Science),2014,38(5):1-8.
[6]WANG P J,CHEN S M.Cretaceous volcanic reservoirs and their exploration in the Songliao Basin,Northeast China[J].AAPG Bulletin,2015,99(3):499-523.
[7]杨正明,张英芝,郝明强,等.低渗透油田储层综合评价方法[J].石油学报,2006,27(2):64-67.YANG Zhengming,ZHANG Yingzhi,HAO Mingqiang,et al.Comprehensive evaluation of reservoir in low-permeability oilfields[J].Acta Petrolei Sinica,2006,27(2):64-67.
[8]王艳忠,操应长,宋国奇,等.东营凹陷古近系深部碎屑岩有效储层物性下限的确定[J].中国石油大学学报(自然科学版),2009,33(4):16-21.WANG Yanzhong,CAO Yingchang,SONG Guoqi,et al.Determination of physical property lower limit of deep clastic effective reservoirs of Paleogene in Dongying depression[J].Journal of China University of Petroleum(Edition of Natural Science),2009,33(4):16-21.
[9]王健,操应长,高永进,等.东营凹陷古近系红层砂体有效储层的物性下限及控制因素[J].中国石油大学学报(自然科学版),2011,35(4):27-33.WANG Jian,CAO Yingchang,GAO Yongjin,et al.Petrophysical parameter cutoff and controlling factors of effective reservoir of red beds sandbodies of Paleogene in Dongying depression[J].Journal of China University of Petroleum(Edition of Natural Science),2011,35(4):27-33.
[10]唐华风,李瑞磊,吴艳辉,等.火山地层结构特征及其对波阻抗反演的约束[J].地球物理学报,2011,54(2):620-627.TANG Huafeng,LI Ruilei,WU Yanhui,et al.Textural characteristics of volcanic strata and its constraint to impedance inversion[J].Chinese Journal of Geophysics,2011,54(2):620-627.
[11]陈振岩,仇劲涛,王璞珺,等.主成盆期火山岩与油气成藏关系探讨[J].沉积学报,2011,29(4):798-808.CHEN Zhenyan,QIU Jintao,WANG Pujun,et al.Relationship between volcanic rocks and hydrocarbon accumulation during dominant period of Basin Formation in Liaohe Depression[J].Acta Sedimentologica Sinica,2011,29(4):798-808.
[12]SRUOGA P,RUBINSTEIN N,HINTERWIMMER G.Porosity and permeability in volcanic rocks:a case study on the Serie Tobifera,South Patagonia,Argentina[J].Journal of Volcanology and Geothermal Research,2004,132:31-43.
[13]史艳丽,侯贵廷.辽河油田黄于热地区火山岩储层物性评价[J].北京大学学报(自然科学版),2005,41(4):577-585.SHI Yanli,HOU Guiting.An assessment on reservoir quality of volcanic rocks in Huang-Yu-Re area,Liaohe Basin[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2005,41(4):577-585.
[14]徐正顺,王渝明,庞彦明,等.大庆徐深气田火山岩气藏储集层识别与评价[J].石油勘探与开发,2006,33(5):521-531.XU Zhengshun,WANG Yuming,PANG Yanming,et al.Identification and evaluation of Xushen volcanic gas reservoirs in Daqing[J].Petroleum Exploration and Development,2006,33(5):521-531.
[15]FENG Z Q.Volcanic rocks as prolific gas reservoir:a case study from the Qingshen gas field in the Songliao Basin,NE China[J].Marine and Petroleum Geology,2008,25(4):416-432.
[16]黄玉龙,王璞珺,舒萍,等.松辽盆地营城组中基性火山岩储层特征及成储机理[J].岩石学报,2010,26(1):82-92.HUANG Yulong,WANG Pujun,SHU Ping,et al.Characteristics and formation mechanism of the Cretaceous intermediate and mafic volcanic reservoirs in Songliao Basin,NE China[J].Acta Petrologic Sinica,2010,26(1):82-92.
[17]罗静兰,邵红梅,张成立.火山岩油气藏研究方法与勘探技术综述[J].石油学报,2003,24(1):31-38.LUO Jinglan,SHAO Hongmei,ZHANG Chengli.Summary of research methods and exploration technologies for volcanic reservoirs[J].Acta Petrolei Sinica,2003,24(1):31-38.
[18]中国石油天然气总公司.油气储层评价方法(SY/T6285-1997)[S].北京:石油工业出版社,1998.
[19]赵澄林,孟卫工,金春爽,等.辽河盆地火山岩与油气[M].北京:石油工业出版社,1999.
[20]王璞珺,冯志强.盆地火山岩[M].北京:科学出版社,2008.
[21]中国石油天然气总公司.岩心分析方法(SY/T 5336-2006)[S].北京:石油工业出版社,2006.
[22]郭睿.储集层物性下限值确定方法及其补充[J].石油勘探与开发,2004,31(5):140-144.GUO Rui.Supplement to determining method of cut-off value of net pay[J].Petroleum Exploration and Development,2008,31(5):140-144.
[23]耿龙祥,曹玉珊,易志伟,等.濮城油田砂岩储集层物性下限标准研究[J].石油勘探与开发,1999,26(1):81-83.GENG Longxiang,CAO Yushan,YI Zhiwei,et al.A study on petrophysical property cutoffs of sandstone reservoirs in Pucheng oil field[J].Petroleum Exploration and Development,1999,26(1):81-83.
[24]张春,蒋裕强,郭红光,等.有效储层基质物性下限确定方法[J].油气地球物理,2010,8(2):11-16.ZHANG Chun,JIANG Yuqiang,GUO Hongguang,et al.Methods to determine the matrix petrophysical property low limits of the effective reservoir[J].Petroleum Geophysics,2010,8(2):11-16.
[25]崔永斌.有效储层物性下限值的确定方法[J].国外测井技术,2007,22(3):34.CUI Yongbin.Determination methods of the petrophysical lower limit value for the effective reservoir[J].World Well Logging Technology,2007,22(3):34.
[26]张琴,朱筱敏,钟大康,等.储层“主因素定量”评价方法的应用:以东营凹陷下第三系碎屑岩为例[J].天然气工业,2006,26(10):21-23.ZHANG Qin,ZHU Xiaomin,ZHONG Dakang,et al.Application of major element quantification method in reservoir assessment:taking the Paleogene clastic reservoirs in Dongying sag as examples[J].Natural Gas Industry,2006,26(10):21-23.
[27]孙洪志,刘吉余.储层综合定量评价方法研究[J].大庆石油地质与开发,2004,23(6):8-11.SUN Hongzhi,LIU Jiyu.Research on comprehensive and quantitative reservoir evaluation[J].Petroleum Geology&Oilfield Development in Daqing,2004,23(6):8-11.
[28]杨正明,姜汉桥,朱光亚,等.低渗透含水气藏储层评价参数研究[J].石油学报,2008,29(2):252-255.YANG Zhengming,JIANG Hanqiao,ZHU Guangya,et al.Research on reservoir revaluation index for low-permeability water-bearing gas reservoir[J].Acta Petrolei Sinica,2008,29(2):252-255.
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