南二区西部葡I1-4层构造及砂体非均质性研究
|
摘要
储层非均质性是油气藏地质研究的核心内容,它不仅影响油气储量计算的可靠性,而且对油田开发与开采方案的制定与实施,特别是对提高油田最终采收率关系重大,它是进行油藏描述和油藏数值模拟研究的基础工作,通过储层宏观非均质性研究,有助于搞清砂体连通状况,揭示油水运动规律,为合理划分开发层系,选择合理注采系统,预测产能,分析生产动态,为改善油田开发效果,进行二次、三次采油提供可靠的地质依据。非均质研究可分为三类可分为:层内非均质性研究、层间非均质性研究和平面非均质性研究。经研究发现影响油层非均质性的因素很多,也很复杂,但归纳起来主要原因有三点即构造因素、沉积因素和成岩因素。这三点概括起来就是构造演化的阶段性、沉积格局的多样性、成岩作用的复杂性对仆均质的影响和制约。就储层沉积而言,影响其非均质的为后两者[1]。
南二区西部葡Ⅰ1-4层构造及砂体非均质性研究对于深入认识聚驱开发规律,提高聚驱开发效果,确保油田可持续发展具有重要的意义。
根据沉积成因和对比单砂层的需要,将松辽盆地白垩系地层从高级到低级依次可划分为4个级别的沉积旋回。按此对葡萄花油层的旋回级别进行划分。采用“旋回对比、分级控制,不同相带区别对待”的方法对比分析地层之间的差异。对葡萄花油层的沉积微相进行划分。分析葡萄花油层的岩性特征、储层砂体成因。在此基础上研究了层内非均质性、层间非均质和平面非均质性的影响因素。
本文从葡Ⅰ1-4层九口取芯井取芯数据入手,对葡Ⅰ1-4层的沉积特征进行研究,并且对该层进行了精细解剖分析。在此基础上总结建立了葡Ⅰ1-4层的沉积模式。应用不等厚等时对比方法和等厚等时对比方法对密井网条件下的葡Ⅰ1-4层砂体进行再次研究,结合调研和取芯资料得出葡Ⅰ1-4层的具体演化过程。通过取芯剖面资料分别对平面上的砂体连通和纵向上的砂体连通进行分析,给出相应的连通关系。根据以上研究成果绘制砂体构造图,并得出了下一步挖潜措施的整体建议。
Reservoir heterogeneity is the core content of geological studies of the reservoir,it not only affects the reliability of the calculation of oil and gas reserves, but oil field development and the formulation and implementation of the exploitation programme, in particular to improve ultimate recovery of oil field, it is a basic work in reservoir description and reservoir simulation. The macro research of the reservoir heterogeneity will help understand the connectivity situation of Sand, reveal movement laws of oil and water, provide a reliable geological basis for reasonable division of the Department of Development,reasonable choice of injection-production system, production forecast, analysis of dynamic production, the improvement of the performance of oil field development, secondary and tertiary recovery. Heterogeneous research can be divided into three categories: the study Of the heterogeneity in layer, the study Of the heterogeneity between layer and the Plane study Of the heterogeneity. The study found that there are many factors affecting reservoir heterogeneity, and these factors are very complicated,but main reasons can be summed up three points: Structural factors, deposition factors and diagenetic factors. These three points can be summed up the stage of the tectonic evolution, the diversity of deposition pattern and the complexity of diagenesis affect and constrain the heterogeneity. For the deposition of the reservoir,the latter two aspects affect their heterogeneity.
Based on the needs of sediment causes and the contrast of single sand, Songliao Basin Cretaceous formation can be divided into four levels of deposition cycles from junior to senior order. The cycle levels of the Putaohua reservoir can be divided by the partition above .The differences between the strata can be analyzed by the way of "cycle contrast, the grade control, differential treatment on different phase " We have devided the formation of the sedimentary facies of Putaohua reservoir analyzed the characterization of lithology and the the causes of reservoir sand . Based on these studies we found out the affection of the heterogeneity of the layer, the non-homogeneous property of the layer and the heterogeneity of the plane .
The Structure of PI1-4 layer and the heterogeneity study of sand in the West of the region of South 2 is of great significance for in-depth understanding development of polymer flooding , improving the development effect of polymer flooding and ensuring ustainable development of oil fields.
This paper start analyzing the sedimentary characteristics of PI1-4 layers and fine anatomical analysis of the layer by the coring data of the PI1-4 layer’s 9 coring wells. On this basis, summing up and establishing deposition model of PI1-4 layer. Studying the PI1-4 layers sand again by applicating contrast method of ranging from thick, same time and the same thick and time under the conditions of crowded Network of wells, obtaining specific evolution of the PI1-4 layer by the combination of research and coring data. Through Profile information of coring,analyzing the plane connectivity relation between the sand and the vertical connectivity relationship between sand to give the corresponding connectivity relation.Based on the above research results Drawing Construction of the sand, and the next step is given for the collective recommendation of maximization measures.
南二区西部葡Ⅰ1-4层构造及砂体非均质性研究对于深入认识聚驱开发规律,提高聚驱开发效果,确保油田可持续发展具有重要的意义。
根据沉积成因和对比单砂层的需要,将松辽盆地白垩系地层从高级到低级依次可划分为4个级别的沉积旋回。按此对葡萄花油层的旋回级别进行划分。采用“旋回对比、分级控制,不同相带区别对待”的方法对比分析地层之间的差异。对葡萄花油层的沉积微相进行划分。分析葡萄花油层的岩性特征、储层砂体成因。在此基础上研究了层内非均质性、层间非均质和平面非均质性的影响因素。
本文从葡Ⅰ1-4层九口取芯井取芯数据入手,对葡Ⅰ1-4层的沉积特征进行研究,并且对该层进行了精细解剖分析。在此基础上总结建立了葡Ⅰ1-4层的沉积模式。应用不等厚等时对比方法和等厚等时对比方法对密井网条件下的葡Ⅰ1-4层砂体进行再次研究,结合调研和取芯资料得出葡Ⅰ1-4层的具体演化过程。通过取芯剖面资料分别对平面上的砂体连通和纵向上的砂体连通进行分析,给出相应的连通关系。根据以上研究成果绘制砂体构造图,并得出了下一步挖潜措施的整体建议。
Reservoir heterogeneity is the core content of geological studies of the reservoir,it not only affects the reliability of the calculation of oil and gas reserves, but oil field development and the formulation and implementation of the exploitation programme, in particular to improve ultimate recovery of oil field, it is a basic work in reservoir description and reservoir simulation. The macro research of the reservoir heterogeneity will help understand the connectivity situation of Sand, reveal movement laws of oil and water, provide a reliable geological basis for reasonable division of the Department of Development,reasonable choice of injection-production system, production forecast, analysis of dynamic production, the improvement of the performance of oil field development, secondary and tertiary recovery. Heterogeneous research can be divided into three categories: the study Of the heterogeneity in layer, the study Of the heterogeneity between layer and the Plane study Of the heterogeneity. The study found that there are many factors affecting reservoir heterogeneity, and these factors are very complicated,but main reasons can be summed up three points: Structural factors, deposition factors and diagenetic factors. These three points can be summed up the stage of the tectonic evolution, the diversity of deposition pattern and the complexity of diagenesis affect and constrain the heterogeneity. For the deposition of the reservoir,the latter two aspects affect their heterogeneity.
Based on the needs of sediment causes and the contrast of single sand, Songliao Basin Cretaceous formation can be divided into four levels of deposition cycles from junior to senior order. The cycle levels of the Putaohua reservoir can be divided by the partition above .The differences between the strata can be analyzed by the way of "cycle contrast, the grade control, differential treatment on different phase " We have devided the formation of the sedimentary facies of Putaohua reservoir analyzed the characterization of lithology and the the causes of reservoir sand . Based on these studies we found out the affection of the heterogeneity of the layer, the non-homogeneous property of the layer and the heterogeneity of the plane .
The Structure of PI1-4 layer and the heterogeneity study of sand in the West of the region of South 2 is of great significance for in-depth understanding development of polymer flooding , improving the development effect of polymer flooding and ensuring ustainable development of oil fields.
This paper start analyzing the sedimentary characteristics of PI1-4 layers and fine anatomical analysis of the layer by the coring data of the PI1-4 layer’s 9 coring wells. On this basis, summing up and establishing deposition model of PI1-4 layer. Studying the PI1-4 layers sand again by applicating contrast method of ranging from thick, same time and the same thick and time under the conditions of crowded Network of wells, obtaining specific evolution of the PI1-4 layer by the combination of research and coring data. Through Profile information of coring,analyzing the plane connectivity relation between the sand and the vertical connectivity relationship between sand to give the corresponding connectivity relation.Based on the above research results Drawing Construction of the sand, and the next step is given for the collective recommendation of maximization measures.
引文
[1] Alden J M,Stephen TS,Dan J H. Characterization of petro-physics flow units in carbonate reservoirs .AAPG Bulle-tin, 1997, 81 (5) :731-759 .
[2] Mandelbrot B B. The fractal geometry of nature[M] .SanFrancisco: Free man, 1982, .
[3] uangming T,Ogbe D O,Walt M,et al. Use of flowunits for reservoir description:Academic study[J] .SPE31569. 1995 .
[4] Hossain M M. A shear dilation stimulation model for pro-duction enhancement from naturally fractured reservoirs[J] .SPE74143. 2002, .
[5] Geehan G W. Geologic Prediction of Shale Continuity,PrudhoeBay Field:Reservoir Characterization .Acade Press,Inc, 1986, 19(9) :162-168 .
[6] Lin Chengyan at al. , The distribution law of remaining oil in the fluvial sandstone reservoir with high water-cut -An example from the Zhong-l district in Gudao oil field, ScientiaGeologicaSinica,1998, Vol. 7, No.3, 395～401
[7] K. N. Wood,at al ,Interwell Residual Oil Saturation Leduc Miscible Pilot.SPE20543, 1990
[8] B. P. Grigorievich ,at al. , Two Tracer Test Method for Quantification of Residual Oil in Fractured Porous Media ,SPE25201, 1993
[9] C.Straley, at al, NMR in Partially Saturated Rocks: Laboratory Insights on Free Fluid Index and Comparison with Borehole Logs. The Log Analyst, 1995
[10] Bill Linville, Reservoir CharacterizationⅢ. Penn Well Publishing Company, 1993
[11] Ian D.Bryant, at al, Integrated 3-D Geological Modeling of the CI Sands Reservoir, Maui Field, offshore New Zealand, AAPG Bulletin, 1995, 79(3), 351～374
[12] Kyung- Hoe Kim at al., Use of NMR Imaging For Determining Fluid Saturation Distributions During Multiphase Displacement in Porous Media. SCA Conference Paper Number 9219, 1992
[13] Dominique Berta at al, Fractal Distribution of Reservoir Properties and Their Use in Reservoir Simulation. SPE 28734, 619～634
[14]李琦,沉积方式与碎屑岩储层的层内非均质性[J],成都理工学院学报, 1996,(S1).
[15]张红薇,赵翰卿,麻成斗.泛滥—分流平原相储层中河间砂体的精细描述[J],大庆石油地质与开发,1998,(06).
[16]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,(04).
[17]杜启振,侯加根,陆基孟.储层微相及砂体预测模型[J],石油学报,1999,(02).
[18]吕晓光,赵翰卿,付志国,雷顺.河流相储层平面连续性精细描述[J],石油学报, 1997,(02)..
[19]吕晓光,马福士,田东辉.隔层岩性物性及分布特征研究[J],石油勘探与开发,1994,(05).
[20]高兴军,宋子齐,谭成仟.真12块垛一段六油组隔夹层划分及描述[J],西安石油学院学报(自然科学版),2000,(05).
[21]计秉玉,李彦兴.喇萨杏油田高含水期提高采收率的主要技术对策[J],大庆石油地质与开发, 2004,(05).
[22]吴锋,史晓丽.葡萄花油田泥粉层的特征及在注水开发中的作用[J],大庆石油地质与开发,2005,(05).
[23]王建新.大庆油田开发历程(1996-2000)[M].北京:石油工业出版社,2003.
[24]李伯虎.萨尔图油田南一、二、三区高台子油层开发方案.大庆石油管理局勘探开发研究院,1986.10.
[25]袭亦楠.储层沉积学研究工程流程.石油勘探与开发,1990,No.1
[26]吕晓光,唐金荣,田东辉.三角洲前缘相储层精细地质模型-沉积单元细分微相识别及非均质描述.大庆石油管理局勘探开发研究院,1998.10.
[27]袭亦楠等.沉积方式与碎屑岩储层的层内非均质性.石油学报,1985,Vol. 6, No.1
[28]陈亮等.严重非均质油藏高含水期剩余油分布研究进展.石油大学学报,1996 , Vol. 20,No.6
[29]陈增智.利用微型圈闭法研究油田剩余油分布.石油大学学报,1992,Vol. 16, No.5
[30]王庚阳等.利用常规测井确定油田开发期储层剩余油分布.石油学报,1992, Vol. 13, No.4
[2] Mandelbrot B B. The fractal geometry of nature[M] .SanFrancisco: Free man, 1982, .
[3] uangming T,Ogbe D O,Walt M,et al. Use of flowunits for reservoir description:Academic study[J] .SPE31569. 1995 .
[4] Hossain M M. A shear dilation stimulation model for pro-duction enhancement from naturally fractured reservoirs[J] .SPE74143. 2002, .
[5] Geehan G W. Geologic Prediction of Shale Continuity,PrudhoeBay Field:Reservoir Characterization .Acade Press,Inc, 1986, 19(9) :162-168 .
[6] Lin Chengyan at al. , The distribution law of remaining oil in the fluvial sandstone reservoir with high water-cut -An example from the Zhong-l district in Gudao oil field, ScientiaGeologicaSinica,1998, Vol. 7, No.3, 395～401
[7] K. N. Wood,at al ,Interwell Residual Oil Saturation Leduc Miscible Pilot.SPE20543, 1990
[8] B. P. Grigorievich ,at al. , Two Tracer Test Method for Quantification of Residual Oil in Fractured Porous Media ,SPE25201, 1993
[9] C.Straley, at al, NMR in Partially Saturated Rocks: Laboratory Insights on Free Fluid Index and Comparison with Borehole Logs. The Log Analyst, 1995
[10] Bill Linville, Reservoir CharacterizationⅢ. Penn Well Publishing Company, 1993
[11] Ian D.Bryant, at al, Integrated 3-D Geological Modeling of the CI Sands Reservoir, Maui Field, offshore New Zealand, AAPG Bulletin, 1995, 79(3), 351～374
[12] Kyung- Hoe Kim at al., Use of NMR Imaging For Determining Fluid Saturation Distributions During Multiphase Displacement in Porous Media. SCA Conference Paper Number 9219, 1992
[13] Dominique Berta at al, Fractal Distribution of Reservoir Properties and Their Use in Reservoir Simulation. SPE 28734, 619～634
[14]李琦,沉积方式与碎屑岩储层的层内非均质性[J],成都理工学院学报, 1996,(S1).
[15]张红薇,赵翰卿,麻成斗.泛滥—分流平原相储层中河间砂体的精细描述[J],大庆石油地质与开发,1998,(06).
[16]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,(04).
[17]杜启振,侯加根,陆基孟.储层微相及砂体预测模型[J],石油学报,1999,(02).
[18]吕晓光,赵翰卿,付志国,雷顺.河流相储层平面连续性精细描述[J],石油学报, 1997,(02)..
[19]吕晓光,马福士,田东辉.隔层岩性物性及分布特征研究[J],石油勘探与开发,1994,(05).
[20]高兴军,宋子齐,谭成仟.真12块垛一段六油组隔夹层划分及描述[J],西安石油学院学报(自然科学版),2000,(05).
[21]计秉玉,李彦兴.喇萨杏油田高含水期提高采收率的主要技术对策[J],大庆石油地质与开发, 2004,(05).
[22]吴锋,史晓丽.葡萄花油田泥粉层的特征及在注水开发中的作用[J],大庆石油地质与开发,2005,(05).
[23]王建新.大庆油田开发历程(1996-2000)[M].北京:石油工业出版社,2003.
[24]李伯虎.萨尔图油田南一、二、三区高台子油层开发方案.大庆石油管理局勘探开发研究院,1986.10.
[25]袭亦楠.储层沉积学研究工程流程.石油勘探与开发,1990,No.1
[26]吕晓光,唐金荣,田东辉.三角洲前缘相储层精细地质模型-沉积单元细分微相识别及非均质描述.大庆石油管理局勘探开发研究院,1998.10.
[27]袭亦楠等.沉积方式与碎屑岩储层的层内非均质性.石油学报,1985,Vol. 6, No.1
[28]陈亮等.严重非均质油藏高含水期剩余油分布研究进展.石油大学学报,1996 , Vol. 20,No.6
[29]陈增智.利用微型圈闭法研究油田剩余油分布.石油大学学报,1992,Vol. 16, No.5
[30]王庚阳等.利用常规测井确定油田开发期储层剩余油分布.石油学报,1992, Vol. 13, No.4