摘要
松辽盆地大庆长垣南部地区浅层气主要赋存在上白垩统嫩江组三、四段,储层为三角洲前缘薄层砂岩,单砂层和单气层厚度为1-8m。针对薄气层特征,采用瞬时子波吸收法预测气层的分布范围,该方法对于厚度较大、产量较高的气层异常特征明显,厚度小于2m的气层识别效果变差。预测结果与钻井符合率达到80%,新发现5个有利目标区,为勘探部署提供了依据。
Shallow gas in the southern part of Daqing Placanticline of Songliao Basin mainly occurs in Nenjiang groups of No.3 and No.4 formation of upper Cretaceous. The reservoir is thin sandstone in delta front and thickness of a single gas layer is 1-8m.According to the characteristics of thin gas reservoirs, instantaneous wavelet absorption method is used to predict gas distribution range. It has obvious abnormity in thicker and higher yield gas zones. Identification of gas reservoir less than 2m is deteriorate.The coincidence rate is up to 80% with drilling. Five favorable target areas have been newly discovered which provides a basis for exploration and deployment.
出处
《石油工业计算机应用》
2013年第1期22-25,3,共4页
Computer Applications Of Petroleum
基金
国家重点基础研究发展计划"973"项目(2009CB219307)
国家自然科学基金项目(40972074)资助
关键词
松辽盆地
上白垩统嫩江组
瞬时子波吸收法
浅层气
Songliao basin
Nenjiang formation of upper Cretaceous
instantaneous wavelet absorption method
shallow gas
