摘要
三维速度场在油气勘探中具有广泛的应用前景,但由于多种技术限制一直未能成功实现。在对比分析现有各种平均速度(场)建立方法原理及优缺点的基础上,优选模型层析法,通过技术攻关,解决了数据体层位自动追踪法和层位解释法相结合的空间倾角场建立技术、速度谱排列影响消除技术、射线追踪层速度求取技术、最小张力法离散数据空间网格化平滑技术等多项长期以来阻碍三维速度场建立的技术难题,建立了胜利油区首个三维速度场——东营凹陷三维速度场,实现了模型层析法建立三维速度场由理论到应用的跨越。模型层析法建立的三维速度场精度高、适用范围广、效果好,具有广阔的应用前景。
The 3D velocity field,a technique with broad perspective of application in the exploration of oilfields,has not been realized hither-to due to the technical constraints.Based on the analysis of principles to establish,variable average velocity fields as well as its ad-vantages and disadvantage,the model tomography was adopted to solve the key technical difficulties constraining the construction of 3-D velocity field such as spatial dipping field techniques by means of combination of horizon automatic tracking and horizon in-terpretation,removing techniques of velocity spectrum alignment affect,calculating techniques of horizon velocity deduced from ray tracking,and smoothing techniques of discrete data space grid by minimum tensile force.Based on the technical breakthrough above.the first 3-D velocity field,3-D velocity of Dongying Depression,was established,and therefore realizing the field applica-tion of 3-D velocity field based on model tomography,as well as the elimination of gap from theory to application.The 3D velocity field built by model tomography is high in precision,wide in application,good in performance,and of broad application prospects.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2010年第1期54-56,61,共4页
Petroleum Geology and Recovery Efficiency
基金
中国石油化工股份有限公司重大基础研究项目"盆地升降过程油气富集机理与富集规律"(P06086)
关键词
速度场
模型层析法
倾角场
射线追踪
最小张力法
东营凹陷
velocity field
model tomography met hod
dip field
ray tracking
minimum tensile force method
Dongying Depression
