摘要
致密砂岩油气藏是当前重要的油气勘探开发目标.该类油气藏普遍具有岩性致密、低孔、低渗的地质特征,储层与围岩的地球物理特征差异较为微弱,先验地质模型特征模糊、地球物理数据体约束性差,从而导致储层地质模型不能充分体现致密砂岩储层较强的非均质性特征.如何综合应用地质、地球物理信息,建立深度域的、定量化的致密砂岩油气藏储层三维地质模型,成为石油工业界关注的重要问题之一.本文在回顾储层建模技术原理及发展历程基础上,形成了将地质研究和地震数据信息充分结合起来的致密砂岩油气藏储层建模方案.在该方案中,在储层地质研究的基础上构建储层地质知识库,量化先验地质认识;通过地震属性优化和储层地震反演,构建对储层参数较为敏感的地震约束信息库;通过精细速度模型构建,将时间域和深度域的数据信息很好地进行匹配;通过构造建模、沉积相/岩相建模、相控下的连续型储层参数建模,建立起完备的致密砂岩油气藏储层地质模型.通过该方案在致密砂岩油气藏储层建模中的实施和应用,证实了该方案的有效性.
Tight oil ＆ gas sands are important targets for oil ＆ gas exploration and development nowadays. They are a type of reservoir with tight sands, lower porosity and permeability. These geological features make their geophysical anomalies feeble, make their prior geological models ambiguous, and make corresponding geophysical data coarse. For these reason, the reservoir modeling can not characterize exactly the heterogeneity of tight oil ＆ gas reservoirs. How to integrate effectively geological, geophysical data to construct 3D quantitative tight oil ＆ gas sands model in depth domain, has became one of the important issues in petroleum industry. Based on the technique theory and the evolution process of reservoir modeling, an integrated modeling program is designed in this paper. In this program, reservoir geological database is used to quantify relative geological findings about reservoirs, seismic attribute optimization and seismic inversion are used to construct constraint seismic database, refined velocity model is used to link corresponding datum in different domains, and face modeling, face-controlled constant reservoir parameters modeling are applied to produce a series of reservoir models. The plan is employed in tight oil ＆ gas sands reservoir modeling and gets good results in the practice.
出处
《地球物理学进展》
CSCD
北大核心
2014年第2期815-823,共9页
Progress in Geophysics
基金
国家"十二五"科技攻关重大专项(2011ZX05002-005-003
2011ZX05002-001-005)联合资助
关键词
致密砂岩油气藏
储层建模
地震属性
地震反演
tight oil and gas sands
reservoir modeling
seismicattributes
seismic inversion
