双河油田核三段Ⅱ组储层非均质性研究
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摘要
本文针对双河油田核三段Ⅱ油组的区域地质背景、沉积条件和成岩演化特征,应用标志层法、层序地层学、邻井对比等方法将双河油田核三段Ⅱ油组细分为6个小层27个沉积时间单元。并根据测井相模式,联系小层对比结果对沉积微相进行研究。
本文在前人的基础上对各口井进行了标准化处理,统一了不同井的不同量纲,对双河油田核三段孔隙度、渗透率又重新统一标准统一解释。
储层微观非均质性研究,通过镜下观察分析碎屑颗粒成分,确定了孔隙、喉道的大小、分布、配置及连通性,以及岩石的组分、颗粒排列方式、基质含量及胶结物的类型等来说明储集层微相的非均质性。
层内非均质性研究,根据储层岩性及电性特征,将层内夹层划分为三类,统计单砂层内夹层的个数、累积夹层厚度、夹层频率及夹层密度,根据夹层在不同沉积微相砂体内的频率及密度,总结夹层分布特征。并通过不同沉积韵律类型分级及计算砂层内渗透率的变异系数、突进系数以及级差来说明储层的非均质特征。
层间非均质性研究,通过分层系数、砂岩密度及重叠系数来描述砂层的发育与分布;采用典型曲线对比法来确定隔层岩性及其厚度并总结隔层的分布特征。
平面非均质性研究,根据不同沉积微相砂体统计其几何形态参数;根据每口井的测井解释资料得到了一组反映储层特征在平面上变化的参数,其中包括储层厚度分布、孔隙度以及渗透率,并且成图。
基于以上研究,评价双河油田核三段Ⅱ油组的储层非均质性,对油田开发和井网的调整都具有重要的意义。
In this paper, about the regional geological setting, depositional conditions and diagenetic evolution features, using the key bed method, sequence stratigraphy and the contrast of adjacent wells, we can divide 2nd oil group He-3 member in Shuanghe oilfield into 6 small layers and 27 depositional time units. And accordding to the electrofacies mode, have studied the sedimentary microfacies lingking the small layer contrasted result.
On the basis of our predecessors' achievements, we have a standardized treatment to all wells in this paper, unifying the different dimension to different wells, and reunit the standard to uniformly interpretate the porosity and permeability of He-3 member in Shuanghe Oilfield.
In the reservoir microscopic heterogeneity study, through the analysis of clastic particles composition at the microscope, we can determine the size, distribution, configuration and connectivity of pore and throat, as well as the rock composition, particle arrangement, matrix content and cement type and so on, to illustrate the microfacies reservoir heterogeneity.
During on the study in layer heterogeneity, based on lithology and electricity characteristics of reservoir, we can divide the intraformational bed into three types. Through counting the number of interlayer in the single layer, the thickness of accumulation interlayer, frequency and density of interlayer, based on the frequency and density of interlayer in different sedimentary microfacies sandbody, we can summarize the distribution characteristics of interlayer. We can illustrate the reservior heterogeneity by the classifying to different types sedimentary rhythm and counting the permeability variation coefficients, maxmean ratio and level difference in sand layers.
To study the interlaminar heterogeneity, we carry the stratification coefficient, sand density and overlap coefficient to descripe the development and distribution of sand; and using typical contrast curve to determine the lithology and thickness of insulating layers and sum up the distribution characteristics of insulation layer.
During the studies of graphic heterogeneity, we can count the geometry parameters according to different sedimentary microfacies sandbody. Under the log interpretation data of each well, we get a set of parameters which can reflect the change of the reservoir characteristics in the plane, including reservoir thickness distribution, porosity and permeability, and mapping.
Based on the above studies, the evaluation of reservoir heterogeneity, which to 2nd oil group He-3 member in Shuanghe oilfield, have the great significance to oilfield development and the well network adjustion.
本文在前人的基础上对各口井进行了标准化处理,统一了不同井的不同量纲,对双河油田核三段孔隙度、渗透率又重新统一标准统一解释。
储层微观非均质性研究,通过镜下观察分析碎屑颗粒成分,确定了孔隙、喉道的大小、分布、配置及连通性,以及岩石的组分、颗粒排列方式、基质含量及胶结物的类型等来说明储集层微相的非均质性。
层内非均质性研究,根据储层岩性及电性特征,将层内夹层划分为三类,统计单砂层内夹层的个数、累积夹层厚度、夹层频率及夹层密度,根据夹层在不同沉积微相砂体内的频率及密度,总结夹层分布特征。并通过不同沉积韵律类型分级及计算砂层内渗透率的变异系数、突进系数以及级差来说明储层的非均质特征。
层间非均质性研究,通过分层系数、砂岩密度及重叠系数来描述砂层的发育与分布;采用典型曲线对比法来确定隔层岩性及其厚度并总结隔层的分布特征。
平面非均质性研究,根据不同沉积微相砂体统计其几何形态参数;根据每口井的测井解释资料得到了一组反映储层特征在平面上变化的参数,其中包括储层厚度分布、孔隙度以及渗透率,并且成图。
基于以上研究,评价双河油田核三段Ⅱ油组的储层非均质性,对油田开发和井网的调整都具有重要的意义。
In this paper, about the regional geological setting, depositional conditions and diagenetic evolution features, using the key bed method, sequence stratigraphy and the contrast of adjacent wells, we can divide 2nd oil group He-3 member in Shuanghe oilfield into 6 small layers and 27 depositional time units. And accordding to the electrofacies mode, have studied the sedimentary microfacies lingking the small layer contrasted result.
On the basis of our predecessors' achievements, we have a standardized treatment to all wells in this paper, unifying the different dimension to different wells, and reunit the standard to uniformly interpretate the porosity and permeability of He-3 member in Shuanghe Oilfield.
In the reservoir microscopic heterogeneity study, through the analysis of clastic particles composition at the microscope, we can determine the size, distribution, configuration and connectivity of pore and throat, as well as the rock composition, particle arrangement, matrix content and cement type and so on, to illustrate the microfacies reservoir heterogeneity.
During on the study in layer heterogeneity, based on lithology and electricity characteristics of reservoir, we can divide the intraformational bed into three types. Through counting the number of interlayer in the single layer, the thickness of accumulation interlayer, frequency and density of interlayer, based on the frequency and density of interlayer in different sedimentary microfacies sandbody, we can summarize the distribution characteristics of interlayer. We can illustrate the reservior heterogeneity by the classifying to different types sedimentary rhythm and counting the permeability variation coefficients, maxmean ratio and level difference in sand layers.
To study the interlaminar heterogeneity, we carry the stratification coefficient, sand density and overlap coefficient to descripe the development and distribution of sand; and using typical contrast curve to determine the lithology and thickness of insulating layers and sum up the distribution characteristics of insulation layer.
During the studies of graphic heterogeneity, we can count the geometry parameters according to different sedimentary microfacies sandbody. Under the log interpretation data of each well, we get a set of parameters which can reflect the change of the reservoir characteristics in the plane, including reservoir thickness distribution, porosity and permeability, and mapping.
Based on the above studies, the evaluation of reservoir heterogeneity, which to 2nd oil group He-3 member in Shuanghe oilfield, have the great significance to oilfield development and the well network adjustion.
引文
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[21]郭平,冉新权.富县探区低孔低渗砂体的成因类型与层内非均质模式[J].沉积学报,2005,25(1):53-58.
[22]陈程,王秀兰.双河油田储层渗流单元分析及应用[J].河南石油,2001,15(1):15-18.
[23]邸世祥等著.中国碎屑岩储集层的孔隙结构[M].西北大学出版社,1991.
[24]邸世详,吴频,李建武.双河油田核桃园组三段储层孔隙结构特征[J].石油与天然气地质,1984,5(3):58-59.
[25]贺承祖,华明琪.储层孔隙结构的分形几何描述[J].石油与天然气地质,1998,19(1):15-23.
[26]姜乃煌,贾风英.泌阳凹陷三种原油的油源及其运移特征[J].石油与天然气地质,1986,7(1):34-35.
[27]张尚锋、张昌民等.双河油田核三段Ⅱ油层组内夹层分布规律[J].沉积与特提斯地质,2000,20(4):71-74.
[28]杨少春.北堡油田中区东营组储层非均质性研究[J].南京大学高效地质学报,1998,4(3):331-337.
[29]谭茂金,范宜仁,张晋言.测井数据标准化方法研究及软件设计[J].物探化探计算技术,2006,28(3):219-223.
[30]李纯菊.泌阳断陷湖盆中的洪水浊流沉积[A].碎屑岩沉积相研究[C].北京:石油工业出版社,1988,125-135.
[31]朱筱敏等.陆西凹陷上侏罗统近岸水下扇沉积特征[J].石油大学学报,1995,19(1):1-6.
[32]翟中喜,秦伟军,台怀中.泌阳凹陷安棚深层系测井相精细研究[J].河南石油,2004,18(3):15-19.
[33]刘克奇,杨喜峰,杨春梅.东濮凹陷卫城81断块沙四段第二砂层组储层非均质性研究[J].断块油气田,2004,11(4):55-57.
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[2]李斌,孟自芳,李相博等.泌阳凹陷下第三系构造特征与沉积体系[J].吉林大学学报(地球科学版),2005,35(3):332-339.
[3]胡受权,郭文平,邵荣松.南襄盆地泌阳断陷第三纪湖泊演化探讨[J].石油学报,2001,22(5):23-28.
[4]南阳油田石油地质志编写组.中国石油地质志(第七卷,第二篇)·中原·南阳油田下[M].北京:石油工业出版社,1995.
[5]朱水安,陈子琪,王寿庆等.泌阳凹陷双河水下冲积扇的沉积特征[J].石油学报,183,4(1):25-33.
[6]李军营.双河油田核三段Ⅱ5油层储层精细对比研究[J].江汉石油学院学报,2004,26(2):31-32.
[7]刘宗堡,马世忠,孙雨,张金刚,吕延防.三肇凹陷葡萄花油层高分辨率层序地层划分及沉积特征研究[J].沉积学报,2008,26(3)399-405.
[8]赵翰卿.高分辨率层序地层对比与我国的小层对比[J].大庆石油地质与开发,2005,2:5-124.
[9]施尚明,樊自立,付红军.双河油田核三段Ⅰ油组沉积微相[J].大庆石油地质与开发,2008,27(5):34-37.
[10]陈春强,张亚中,吴丽艳等.安棚油田扇三角洲沉积微相特征与油气分布[J].新疆石油地质,2005,26(5): 529-532.
[11]敬国超,陈程.高含水后期双河油田开发地质工作方向[J].河南石油,2005,19(3):20-23.
[12]尹太举,陈程.建立储层流动单元模型的新方法[J].石油与天然气地质,1999,20(2):170-175.
[13]裘怿楠、薛叔浩、应凤祥.中国陆相油气储集层[M].北京:石油工业出版社,1997,309-329.
[14]裘怿楠.开发地质方法论[J].石油勘探与开发,1996,23(2):43-47.
[15]李丕龙,姜在兴,马在平著.东营凹陷储集体与油气分布[M].北京:石油工业出版社,2000.
[16]赵澄林.沉积学原理[M].北京:石油工业出版社,2001:56-72.
[17]陈春强、樊太亮、吴丽艳.扇三角洲沉积微相特征与储集层“四性”的关系[J].石油天然气学报,2005,27(4):545-549.
[18]陈程、孙义梅.油田开发后期扇三角洲前缘微相分析与应用[J].现代地质,2000,15(1):88-93.
[19]赵霞飞.河流相模式与储层非均质性[J].成都理工学院学报,1999.
[20]赵春森等.油藏非均质性的定量描述方法[J].石油学报,1999.
[21]郭平,冉新权.富县探区低孔低渗砂体的成因类型与层内非均质模式[J].沉积学报,2005,25(1):53-58.
[22]陈程,王秀兰.双河油田储层渗流单元分析及应用[J].河南石油,2001,15(1):15-18.
[23]邸世祥等著.中国碎屑岩储集层的孔隙结构[M].西北大学出版社,1991.
[24]邸世详,吴频,李建武.双河油田核桃园组三段储层孔隙结构特征[J].石油与天然气地质,1984,5(3):58-59.
[25]贺承祖,华明琪.储层孔隙结构的分形几何描述[J].石油与天然气地质,1998,19(1):15-23.
[26]姜乃煌,贾风英.泌阳凹陷三种原油的油源及其运移特征[J].石油与天然气地质,1986,7(1):34-35.
[27]张尚锋、张昌民等.双河油田核三段Ⅱ油层组内夹层分布规律[J].沉积与特提斯地质,2000,20(4):71-74.
[28]杨少春.北堡油田中区东营组储层非均质性研究[J].南京大学高效地质学报,1998,4(3):331-337.
[29]谭茂金,范宜仁,张晋言.测井数据标准化方法研究及软件设计[J].物探化探计算技术,2006,28(3):219-223.
[30]李纯菊.泌阳断陷湖盆中的洪水浊流沉积[A].碎屑岩沉积相研究[C].北京:石油工业出版社,1988,125-135.
[31]朱筱敏等.陆西凹陷上侏罗统近岸水下扇沉积特征[J].石油大学学报,1995,19(1):1-6.
[32]翟中喜,秦伟军,台怀中.泌阳凹陷安棚深层系测井相精细研究[J].河南石油,2004,18(3):15-19.
[33]刘克奇,杨喜峰,杨春梅.东濮凹陷卫城81断块沙四段第二砂层组储层非均质性研究[J].断块油气田,2004,11(4):55-57.
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