石油物探2012，Vol.51Issue(4)：414-419,6.DOI:10.3969/j.issn.1000-1441.2012.04.016
大牛地气田二叠系下石盒子组致密砂岩储层含气性识别因子研究
Study on gas identification factor of tight sandstone reservoirs in Lower Shihezi formation from Daniudi Gasfield, Ordos Basin
摘要
Abstract
The tight sandstone reservoirs in lower Shihezi formation from Daniudi Gasfieid of Ordos Basin is characterized by low-porosity, and the variation of geophysical characteristics followed by oil saturation and gas saturation is weak relatively, therefore the identification of reservoir fluid is difficult in the area. In order to solve the problem, we optimized gas-bearing sensitive elastic parameters based on rock physical parameters testing. By using the relationship in parameters, we derived computation formula for fluid sensitive elastic parameters and constructed a new gas-bearing identification factor. By utilizing the P-wave and S-wave impedance simultaneous inversion result of prestack seismic data, the data volume of new gas-bearing identification factor was computed and applied to the reservoir fluid detection in Daniudi Gasfieid. The application results indicate that the new gas-bearing identification factor can effectively highlight the impact of fluid changes and is sensitive to the gas-bearing tight sandstone reservoirs with good anti-noise capability.关键词
致密砂岩/含气性/弹性参数/识别因子/地震反演Key words
tight sandstone/ gas-bearing/ elastic parameters/ identification factor/ seismic inversion分类
天文与地球科学引用本文复制引用
马中高,张金强,蔡月晖,李呈呈..大牛地气田二叠系下石盒子组致密砂岩储层含气性识别因子研究[J].石油物探,2012,51(4):414-419,6.基金项目
国家科技重大专项(2008ZX05045-02-05)和中国石油化工股份有限公司科技开发项目(P09067)联合资助. （2008ZX05045-02-05）
