普光气田深层气藏构造综合解释技术研究
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摘要
普光气田主要目的层段为飞仙关组和长兴组,由于气藏埋藏深、含气井段长,地表、地下地质条件复杂,给构造解释造成一定难度。为了提高气藏构造解释精度,充分应用地震、测井、取心等多种资料,以精细地层对比为基础,三维地震人机联作新技术为手段,遵循"由大到小,由浅而深,由粗而精"的解释原则,重点开展层位标定与追踪、断层组合、变速成图等方面的研究,并实时跟踪分析新钻井资料,使构造解释精度不断提高,逐步形成了一套较为系统完善的深层气藏构造综合解释技术。研究成果较精确地认识了普光气田深层气藏构造特征,为气田开发井位部署提供了可靠的地质依据。
Feixianguan Formation and Changxing Formation are the main target zones of Puguang Gas Field.The gas reservoir is buried deeply,the gas-bearing interval is long and the surface and underground condition is complex,which causes some difficulties for structure interpretation.In order to improve the accuracy of structure interpretation for the gas reservoir,this paper emphatically studies on the seismic horizon determination and tracking,fault combination and variable-velocity mapping,makes real-time tracking and analyzes the new drilling data by making use full of seismic data,log data,coring data and the 3D seismic man-machine league technology based on the fine stratigraphic correlation and following the interpretation principle from large to littile,from shallow to deep,from rough to subtle.The accuracy of structure interpretation is raised and a complete set of comprehensive structure interpretation techniques for deep gas reservoir are gradually formed.From the results of the study,the structural features of deep gas reservoir in Puguang Gas Field is more accurately recognized,which provides reliable geological basis for development well placement.
Feixianguan Formation and Changxing Formation are the main target zones of Puguang Gas Field.The gas reservoir is buried deeply,the gas-bearing interval is long and the surface and underground condition is complex,which causes some difficulties for structure interpretation.In order to improve the accuracy of structure interpretation for the gas reservoir,this paper emphatically studies on the seismic horizon determination and tracking,fault combination and variable-velocity mapping,makes real-time tracking and analyzes the new drilling data by making use full of seismic data,log data,coring data and the 3D seismic man-machine league technology based on the fine stratigraphic correlation and following the interpretation principle from large to littile,from shallow to deep,from rough to subtle.The accuracy of structure interpretation is raised and a complete set of comprehensive structure interpretation techniques for deep gas reservoir are gradually formed.From the results of the study,the structural features of deep gas reservoir in Puguang Gas Field is more accurately recognized,which provides reliable geological basis for development well placement.
引文
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[4]韩福民,刘忠亮,王道义,等.复杂断块地区相干体解释技术的应用研究[J].江汉石油学院学报,2003,25(2):54-55. Han Fumin,Liu Zhongliang,Wang Daoyi,et al.Application and research of coherent volume interpretation technique in complex fault block area[J].Journal of Jianghan Petroleum Insititute,2003,25(2): 54-55.
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