电位法监测剩余油分布技术在辽河地区推广应用
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摘要
辽河油田正处于二次采油阶段,油田注水开发是提高采收率重要方法,已经广泛地应用于生产实践中。随着主力油田开采程度的加深,油田进入高含水、高采出的“双高”阶段,地下油水关系复杂,剩余油更加分散,研究电位法监测剩余油水分布关系,确定测水驱前缘,能为合理、经济地制定油田开发方案提供重要的科学依据。
目前水驱前缘监测常见方法有四维地震、测井储层描述、动态导体充电法以及示踪迹测井等直接测量方法,这些方法都存在不同程度的弊端。
电位法监测水驱前缘,确定剩余油分布是近几年发展起来的新技术,目前在江汉油田和中原油田得到了广泛应用,取得了可喜成果。这种技术,在辽河还没有应用过,为此,我们物探公司从2005年进行科研立项,投入科研经费近20万元,用于该项目的采集、处理和解释研究。06年11月,在锦州采油厂选择了两个试验区块:一个是锦16块,施工面积0.8km2;另外一个是锦2-6-9块,施工面积0.6km2。
我们收集锦2-6-9块的地震资料,进行综合解释研究近30km2,共解释了四层,分别是大凌河Ⅰ、Ⅱ、Ⅲ和兴隆台油层,得到四张构造图;一张沉积相图,一张沙体等厚图;抽出五条连井线剖面,分别做了三瞬处理分析,试图与电位法成果资料结合起来,目的是验证电位法成果资料的合理性。
通过综合分析对比,我们得到如下结论:电位法监测剩余油分布成果与实际生产井动态资料吻合较好,与地震属性特征相吻合较好;说明了电位法监测剩余油和水分布关系成果是比较合理可靠的。
Liaohe Oilfield is now on its secondary recovery stage. The flooding development is an important method to enhance oil recovery and has been widely used in the operation. With the main oilfield oil recovery development, it enters into a double high phase as high water-bearing and high revovery. There exists a complex water and oil relationship and more distributed oil residual. Throught the study of the electric potential method to monitor the residual oil and water distribution, we can measure the water drive frontier and provide a scentific information to reasonably, ecomomically plan the oilfield development.
Now we have four methods to monitor the water drive frontier named as 4D seismology, logging reservoir characterization, dynamic conductor charging method and tracer logging monitoring which all have different disadvantages.
The electric potential method which developed in recent years,can monitor water drive frontier and then measure the residual oil distribution. Now it has been widely used in Jianghan Oildield and Zhongyuan Oilfield and acqired good results. Due the fact that it has been used in Liaohe Oilfield, our company start the scentific research in 2005 with 200,000.00RMB used in data acquisition,processing and interpretation.In Nov. 2006, we made two tests on Jin 16 block (area 0.8 square kilometers) and Jin 2-6-9 block (area 0.6 square kilometers) in Jinzhou oil production plant.
We have made a comprehensive interpretation of the seismic data (30 square kilometers) collected from Jin 2-6-9 block divided by four layers: DalingheⅠ,Ⅱ,Ⅲand Xinglongtai layer from which we got four construction mapps, one sedimentary face map, one equivalent depth sand map.we picked up five cross well line profiles and made the three-instantaneous processing seperately and try to testify the rationality of the electric potential method data results through comparation which we conclude the facts as follows.
The electric potential method data results just show the dynamic data of the production well and the seismic attribution character. The residual oil and water relationship coming from the electric potential method monitoring can be dependable.
目前水驱前缘监测常见方法有四维地震、测井储层描述、动态导体充电法以及示踪迹测井等直接测量方法,这些方法都存在不同程度的弊端。
电位法监测水驱前缘,确定剩余油分布是近几年发展起来的新技术,目前在江汉油田和中原油田得到了广泛应用,取得了可喜成果。这种技术,在辽河还没有应用过,为此,我们物探公司从2005年进行科研立项,投入科研经费近20万元,用于该项目的采集、处理和解释研究。06年11月,在锦州采油厂选择了两个试验区块:一个是锦16块,施工面积0.8km2;另外一个是锦2-6-9块,施工面积0.6km2。
我们收集锦2-6-9块的地震资料,进行综合解释研究近30km2,共解释了四层,分别是大凌河Ⅰ、Ⅱ、Ⅲ和兴隆台油层,得到四张构造图;一张沉积相图,一张沙体等厚图;抽出五条连井线剖面,分别做了三瞬处理分析,试图与电位法成果资料结合起来,目的是验证电位法成果资料的合理性。
通过综合分析对比,我们得到如下结论:电位法监测剩余油分布成果与实际生产井动态资料吻合较好,与地震属性特征相吻合较好;说明了电位法监测剩余油和水分布关系成果是比较合理可靠的。
Liaohe Oilfield is now on its secondary recovery stage. The flooding development is an important method to enhance oil recovery and has been widely used in the operation. With the main oilfield oil recovery development, it enters into a double high phase as high water-bearing and high revovery. There exists a complex water and oil relationship and more distributed oil residual. Throught the study of the electric potential method to monitor the residual oil and water distribution, we can measure the water drive frontier and provide a scentific information to reasonably, ecomomically plan the oilfield development.
Now we have four methods to monitor the water drive frontier named as 4D seismology, logging reservoir characterization, dynamic conductor charging method and tracer logging monitoring which all have different disadvantages.
The electric potential method which developed in recent years,can monitor water drive frontier and then measure the residual oil distribution. Now it has been widely used in Jianghan Oildield and Zhongyuan Oilfield and acqired good results. Due the fact that it has been used in Liaohe Oilfield, our company start the scentific research in 2005 with 200,000.00RMB used in data acquisition,processing and interpretation.In Nov. 2006, we made two tests on Jin 16 block (area 0.8 square kilometers) and Jin 2-6-9 block (area 0.6 square kilometers) in Jinzhou oil production plant.
We have made a comprehensive interpretation of the seismic data (30 square kilometers) collected from Jin 2-6-9 block divided by four layers: DalingheⅠ,Ⅱ,Ⅲand Xinglongtai layer from which we got four construction mapps, one sedimentary face map, one equivalent depth sand map.we picked up five cross well line profiles and made the three-instantaneous processing seperately and try to testify the rationality of the electric potential method data results through comparation which we conclude the facts as follows.
The electric potential method data results just show the dynamic data of the production well and the seismic attribution character. The residual oil and water relationship coming from the electric potential method monitoring can be dependable.
引文
[1]电位法井间监测剩余油技术在江汉油田的应用江汉石油学院学报论文, [作者]:胡辉,张建荣,陈丽
[2]裘慰庭张乐天译·震电勘探原理·北京:石油工业出版社,1996.12
[3]俞寿朋·高分辨率地震勘探·北京:石油工业出版社,1993
[4]谭绍泉·深层油气地震采集与处理方法·北京:地质出版社,2004
[5]李庆忠·走向精确勘探的道路·北京:石油工业出版社,1993:
[6]张中杰等主编·地震学研究新进展-庆祝何樵登教授从事地球物理工作50周年·北京:石油工业出版社,2004: 463-469
[2]裘慰庭张乐天译·震电勘探原理·北京:石油工业出版社,1996.12
[3]俞寿朋·高分辨率地震勘探·北京:石油工业出版社,1993
[4]谭绍泉·深层油气地震采集与处理方法·北京:地质出版社,2004
[5]李庆忠·走向精确勘探的道路·北京:石油工业出版社,1993:
[6]张中杰等主编·地震学研究新进展-庆祝何樵登教授从事地球物理工作50周年·北京:石油工业出版社,2004: 463-469