用地震属性技术识别构造岩性物性复合油气藏
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摘要
地震属性分析技术主要是借助各种数学分析方法,从地震数据中拾取有关岩性及含油性等多种属性的信息,同时结合工区内测井资料进行储层参数转换,进而直接指导油气勘探与开发。文章在地震属性认识的基础上,介绍了准噶尔盆地西北缘拐16井油气藏地震属性识别技术的应用,分析研究了该油气藏属于构造岩性物性复合油气藏类型的例子。拐16井区油气藏最初被作为构造圈闭,随后被预测为岩性圈闭,但后期的钻探结果表明这都是不正确的。利用均方根振幅、瞬时相位、反射能量等地震属性并结合沉积、构造等储层信息,对拐16井油气藏的岩性、物性、构造和含油气性进行研究,其研究结果表明该油气藏为构造岩性物性复合油气藏,所提出的滚动勘探开发建议已通过专家评审,并被生产管理部门所接受。
Seismic attribute analysis technology is to pick multiple attributes relating to lithology and oil-bearing property from seismic data by using various mathematical analysis methods and to transform reservoir parameters in combination with the logging data in the working area, so as to guide oil and gas exploration and development. Based on the knowledge of seismic attributes, this paper introduces the application of seismic attribute analysis technologies to reservoir identification in Guai 16 wellblock on the northwestern edge of Zhungar basin and takes it as a typical example to study structural-lithological-physical property composite reservoirs. The reservoir in Guai 16 wellblock was initially thought to be a structural trap and later was predicted to be a lithologic trap, but both of which were proved to be wrong by the drilling results. The lithologies, physical properties, structures and oil-bearing properties of the reservoir in Guai 16 wellblock are studied by using the seismic attributes, such as root-mean-square amplitude, instantaneous phase and reflection energy, and in combination with the reservoir information, such as sedimentation and structures. The study results show that it is a structural-lithological-physical property composite reservoir. The proposal of progressive exploration and development has passed the examination of specialists and accepted by the production management division.
Seismic attribute analysis technology is to pick multiple attributes relating to lithology and oil-bearing property from seismic data by using various mathematical analysis methods and to transform reservoir parameters in combination with the logging data in the working area, so as to guide oil and gas exploration and development. Based on the knowledge of seismic attributes, this paper introduces the application of seismic attribute analysis technologies to reservoir identification in Guai 16 wellblock on the northwestern edge of Zhungar basin and takes it as a typical example to study structural-lithological-physical property composite reservoirs. The reservoir in Guai 16 wellblock was initially thought to be a structural trap and later was predicted to be a lithologic trap, but both of which were proved to be wrong by the drilling results. The lithologies, physical properties, structures and oil-bearing properties of the reservoir in Guai 16 wellblock are studied by using the seismic attributes, such as root-mean-square amplitude, instantaneous phase and reflection energy, and in combination with the reservoir information, such as sedimentation and structures. The study results show that it is a structural-lithological-physical property composite reservoir. The proposal of progressive exploration and development has passed the examination of specialists and accepted by the production management division.
引文
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[2]袁秉衡.应用地震技术研究储层[M].北京:石油工业出版社,1992:26412.
[3]张洪波,王纬.高精度地震属性储层预测技术研究[J].天然气工业,2005,25(7).
[4]徐旺林,庞雄奇.储层测井特征属性反演方法[J].天然气工业,2005,25(3).
[5]师永民,陈广坡.储层综合预测技术在塔里木盆地碳酸盐岩中的应用[J].天然气工业,2005,25(3).
[6]陆基孟.地震勘探原理[M].山东东营:石油大学出版社,1993:2333.
[7]陈遵德.储层地震属性优化方法[M].北京:石油工业出版社,1996.
[8]张娥,高书琴,等.利用地震属性预测砂岩储集层厚度及含油饱和度[J].石油勘探与开发,2000,27(1).
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