摘要
采用四分量地震新技术对莺琼盆地进行详细研究。从分析岩心实验室测试数据、全波列测井数据和地震资料纵、横波地震参数及衍生参数的变化规律认识到 :含气岩心的刚性模量、纵横波速度比和泊松比比含盐水岩心的低得多 ,砂岩的纵横波速度比和泊松比比泥岩的低得多 ;当地层埋深超过 2 50 0m (属于中深层 )时 ,纵横波速度比、泊松比基本不受深度的影响。基于上述研究成果和对几口探井砂岩、泥岩及砂泥岩的泊松比统计 ,制作了莺歌海盆地中深层岩性和气层预测量版 ,并对LD8 3构造进行了岩性和气藏预测 ,结果展示出LD8 3构造的中深层存在多层气层 ,且物性优越 ,储盖条件好 ,具有很好的勘探前景。图5表 1参
The regularity of the seismic survey and its derivative parameters are studied. The information such as the core testing data, all waves well log information and seismic data are analyzed. For gas bearing core, the bulk modulus, V p / V s and Poisson ration are distinctly lower than those of the brine bearing core. The Velocity and Poisson ratio of sand are distinctly lower than that of shale. When burial depth is beyond 2,500m , the velocity and Poisson ratio are not influenced by the burial depth. The prediction graticule of the lithology and gas reservoirs in Yinggehai basin has been made. The method of predicting lithology and gas reservoirs is propounded. In this method, Poisson ratio is used. The lithology and gas reservoirs of LD8 3 structure are detected. The detecting result shows that exploration prospect of the medium deep beds of LD8 3 is very good.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2001年第4期67-69,共3页
Petroleum Exploration and Development
