泌阳凹陷南部陡坡带油水层识别及测井解释方法研究
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摘要
泌阳凹陷南部陡坡带位于泌阳凹陷南部大断裂内侧,紧邻北部深凹生油区,具有优越的油源条件,而来自于西南部的平氏砂体、南部的杨桥砂体和东南部的栗园砂体向北深入到生油区,大的砂体与鼻状构造配置形成岩性上倾尖灭圈闭,小型砂体靠根部的物性封堵形成砂砾岩体岩性圈闭,为油气聚集提供了有利场所,自西向东主要有泌310、泌301、泌320、泌304等含油区块。本区带内储层岩性颗粒粗而混杂、分选差,岩石成分和结构成熟度低,储层岩性和物性变化大,自上而下由中孔中渗逐渐变为低孔、低渗储层,且平面分布不均。该区带内油层主要分布于古近系核桃园组,浅层分布稠油油藏,中层一般为常规稀油,深层则主要为挥发性轻质油,地层水主要为重碳酸氢纳型。
目前,在泌阳凹陷南部陡坡带发现有良好的油气显示,部分钻探井获得了高产工业流油,揭示了该区良好的勘探前景,但在该区带的测井精细解释过程中存在诸多困难,比如储层类型多样、岩性复杂(砂岩、砾岩、灰质砂岩、灰质泥岩)、岩性对电性的影响超过含油性对电性的影响；砂体连通性差,油水关系混乱,油干界限不清楚,油水层电性特征不明显等。为了使测井解释人员更好地认识该区带的油藏分布规律,提高识别油气的能力,更好地为科研生产服务,因此决定开展《泌阳凹陷南部陡坡带油水层识别及测井解释方法研究》的选题研究工作。本文以地质、油藏研究为基础,利用取心、录井、测井资料开展储层四性特征及关系研究,建立各主要岩性储层参数解释模型,利用多种测井曲线重叠法和泥质含量来定性、定量识别储层,并结合取心、录井资料研究有效储层物性下限；在储层识别的基础上分析测井数据,寻找典型油水层测井响应特征,细分储层岩性建立含油饱和度解释模型,结合饱和度参数与录井、试油数据综合判别油水层,建立油水层识别标准,最终应用到南部陡坡带测井解释工作中,取得较好效果。
Southern actic region in Biyang Depression is located at southern faults inside, close to the northern oil source area, with excellent conditions for oil sources.The Pingshi sand from the southwest, the Yangqiao sand from southern and the Liyuan sand from southeastern extended into north oil source area, which the large sand and the nose structure configurated to lithologic updip pinch out traps,the small sand formed glutenite Lithologic traps by property blocking of roots, provided favorable oil gathering place.Bi310,Bi301,Bi320,Bi304 oil-blocks distributed from west to east.In this region, Reservoir lithology Particle was coarse and mixed, with poor sorting, low rock composition and structure maturity.The reservoir lithology and physical changed from middle porosity and permeability in top to low porosity and permeability in bottom, and distributed unevenly in the surface. the reservoir are mainly distributed in the Paleogene Hetaoyuan group,with heavy oil in shallow formation, generally oil in middle and volatile light oil in deep, which the formation water type was heavy sodium bicarbonate.
Now, showing was found in southern actic region of Biyang depression, a part of wells have high oil stream, displayed excellent exploration prospect,but have many difficulties in the logging interpretation process such as diverse reservoir, complex lithology (sandstone, conglomerate, gray sandstone, gray shale), the electrical resistance by rock have more influence than by oil, sand connectivity is poor, chaotic relationship between oil and water, oil-dry boundary is not clear, oil-water layer is not obvious in electrical characteristics. In order to explained preferably reservoir distribution, improved the ability to identify reservoir, served for the research and production services, then decided to carry out the research topics of "oil&water identification and log interpretation method research in southern steep slope of Biyang Depression".
This paper carried out the reservoir characteristics and relationships between four-propertis of logging, founded interpretation model of reservoir parameters for the main lithology, qualitative or quantitative distinguished reservoir by using multiple logging curves overlap and clay content, studied lower limit of net reservoir with coring and mud logging data, analysed logging data,found log characteristics of typical oil and water layers,build oil saturation interpretation model and identification standard of oil-water. Finally, this research applicationed to the logging interpretation work in southern actic region in biyang depression, and achieve better results.
目前,在泌阳凹陷南部陡坡带发现有良好的油气显示,部分钻探井获得了高产工业流油,揭示了该区良好的勘探前景,但在该区带的测井精细解释过程中存在诸多困难,比如储层类型多样、岩性复杂(砂岩、砾岩、灰质砂岩、灰质泥岩)、岩性对电性的影响超过含油性对电性的影响；砂体连通性差,油水关系混乱,油干界限不清楚,油水层电性特征不明显等。为了使测井解释人员更好地认识该区带的油藏分布规律,提高识别油气的能力,更好地为科研生产服务,因此决定开展《泌阳凹陷南部陡坡带油水层识别及测井解释方法研究》的选题研究工作。本文以地质、油藏研究为基础,利用取心、录井、测井资料开展储层四性特征及关系研究,建立各主要岩性储层参数解释模型,利用多种测井曲线重叠法和泥质含量来定性、定量识别储层,并结合取心、录井资料研究有效储层物性下限；在储层识别的基础上分析测井数据,寻找典型油水层测井响应特征,细分储层岩性建立含油饱和度解释模型,结合饱和度参数与录井、试油数据综合判别油水层,建立油水层识别标准,最终应用到南部陡坡带测井解释工作中,取得较好效果。
Southern actic region in Biyang Depression is located at southern faults inside, close to the northern oil source area, with excellent conditions for oil sources.The Pingshi sand from the southwest, the Yangqiao sand from southern and the Liyuan sand from southeastern extended into north oil source area, which the large sand and the nose structure configurated to lithologic updip pinch out traps,the small sand formed glutenite Lithologic traps by property blocking of roots, provided favorable oil gathering place.Bi310,Bi301,Bi320,Bi304 oil-blocks distributed from west to east.In this region, Reservoir lithology Particle was coarse and mixed, with poor sorting, low rock composition and structure maturity.The reservoir lithology and physical changed from middle porosity and permeability in top to low porosity and permeability in bottom, and distributed unevenly in the surface. the reservoir are mainly distributed in the Paleogene Hetaoyuan group,with heavy oil in shallow formation, generally oil in middle and volatile light oil in deep, which the formation water type was heavy sodium bicarbonate.
Now, showing was found in southern actic region of Biyang depression, a part of wells have high oil stream, displayed excellent exploration prospect,but have many difficulties in the logging interpretation process such as diverse reservoir, complex lithology (sandstone, conglomerate, gray sandstone, gray shale), the electrical resistance by rock have more influence than by oil, sand connectivity is poor, chaotic relationship between oil and water, oil-dry boundary is not clear, oil-water layer is not obvious in electrical characteristics. In order to explained preferably reservoir distribution, improved the ability to identify reservoir, served for the research and production services, then decided to carry out the research topics of "oil&water identification and log interpretation method research in southern steep slope of Biyang Depression".
This paper carried out the reservoir characteristics and relationships between four-propertis of logging, founded interpretation model of reservoir parameters for the main lithology, qualitative or quantitative distinguished reservoir by using multiple logging curves overlap and clay content, studied lower limit of net reservoir with coring and mud logging data, analysed logging data,found log characteristics of typical oil and water layers,build oil saturation interpretation model and identification standard of oil-water. Finally, this research applicationed to the logging interpretation work in southern actic region in biyang depression, and achieve better results.
引文
[1]陈程、李兵等,泌阳凹陷南部陡坡带砂砾岩体预测及有利目标评价研究,内部资料,2008.
[2]中国石油勘探与生产公司,低阻油气藏测井识别评价方法与技术,石油工业出版社,2006.
[3]曾小阳,李显路等,泌阳凹陷南部陡坡带泌304区块测井解释方法研究,石油地质与工程,2009.
[4]王正付、李显路等,Swi与Φ关系及其油气层识别作用,河南石油,2000.
[5]刘丽琼、文环明等,低阻油层识别方法研究,河南石油,1998.
[6]姚光庆,油气储层地质学,中国地质大学出版社,1998.
[7]肖立志,柴细元,核磁共振测井资料解释与应用导论,石油工业出版社,2001.
[8]李显路,曾小阳,安棚深层系储层孔隙度计算方法研究,河南石油,2004.
[9]万力,刘建斌等,泌阳凹陷赵凹油田泌304区块低阻油层成因分析及识别研究,石油地质与工程,2009.
[10]曾文冲,低电阻率油气层的类型、成因及评价方法的分析,地球物理测井,1991.
[11]谢然红,低电阻率油气层测井解释方法,测井技术,2001.
[12]汪中浩,章成广,低渗砂岩储层测井评价方法,石油工业出版社,2004.
[13]郭海敏,生产测井导轮,石油工业出版社,2003.
[14]中国石油天然气总公司勘探局,测井新技术与油气层评价进展,石油工业出版社,1998.
[15]李厚义,赵宇芳,对低电阻率油层的一个误解及修正,测井技术,2002.
[16]测井学编写组,测井学,石油工业出版社,1998.
[17]陈一鸣、朱德怀等,矿场地球物理测井技术测井资料解释,石油工业出版社,1994.
[18]欧阳健,油藏中饱和度—电阻率分布规律研究——深入分析低阻油层基本成因,石油勘探与开发,2002.
[19]毛志强,朱卫红,汪如军,塔里木盆地油气层低阻成因实验研究,测井技术,1999.
[20]欧阳健,石油测井解释与储层描述,石油工业出版社,1994.
[21]赵政章,欧阳健,刘德来等,渤海湾地区低电阻油气层测井技术与解释方法,石油工业出版社,2000.
[22]H.B.布雷德利,石油工程手册(下册),石油工业出版社,1996.
[23]Bovan K George,泥浆滤液侵入与感应测井物理过程的综合研究,SPWLA 44th,2003.
[24]George R.Coates, Lizhi Xiao, and Manfred GPrammer, Halliburton Energy Services, NMR Logging Principles and Applications,2002.
[2]中国石油勘探与生产公司,低阻油气藏测井识别评价方法与技术,石油工业出版社,2006.
[3]曾小阳,李显路等,泌阳凹陷南部陡坡带泌304区块测井解释方法研究,石油地质与工程,2009.
[4]王正付、李显路等,Swi与Φ关系及其油气层识别作用,河南石油,2000.
[5]刘丽琼、文环明等,低阻油层识别方法研究,河南石油,1998.
[6]姚光庆,油气储层地质学,中国地质大学出版社,1998.
[7]肖立志,柴细元,核磁共振测井资料解释与应用导论,石油工业出版社,2001.
[8]李显路,曾小阳,安棚深层系储层孔隙度计算方法研究,河南石油,2004.
[9]万力,刘建斌等,泌阳凹陷赵凹油田泌304区块低阻油层成因分析及识别研究,石油地质与工程,2009.
[10]曾文冲,低电阻率油气层的类型、成因及评价方法的分析,地球物理测井,1991.
[11]谢然红,低电阻率油气层测井解释方法,测井技术,2001.
[12]汪中浩,章成广,低渗砂岩储层测井评价方法,石油工业出版社,2004.
[13]郭海敏,生产测井导轮,石油工业出版社,2003.
[14]中国石油天然气总公司勘探局,测井新技术与油气层评价进展,石油工业出版社,1998.
[15]李厚义,赵宇芳,对低电阻率油层的一个误解及修正,测井技术,2002.
[16]测井学编写组,测井学,石油工业出版社,1998.
[17]陈一鸣、朱德怀等,矿场地球物理测井技术测井资料解释,石油工业出版社,1994.
[18]欧阳健,油藏中饱和度—电阻率分布规律研究——深入分析低阻油层基本成因,石油勘探与开发,2002.
[19]毛志强,朱卫红,汪如军,塔里木盆地油气层低阻成因实验研究,测井技术,1999.
[20]欧阳健,石油测井解释与储层描述,石油工业出版社,1994.
[21]赵政章,欧阳健,刘德来等,渤海湾地区低电阻油气层测井技术与解释方法,石油工业出版社,2000.
[22]H.B.布雷德利,石油工程手册(下册),石油工业出版社,1996.
[23]Bovan K George,泥浆滤液侵入与感应测井物理过程的综合研究,SPWLA 44th,2003.
[24]George R.Coates, Lizhi Xiao, and Manfred GPrammer, Halliburton Energy Services, NMR Logging Principles and Applications,2002.