储层综合预测技术在鄂尔多斯盆地定北区块的应用

Application of techniques of fine structure interpretation and formation prediction in Dingbei area of Ordos basin.

中国石油化工股份有限公司石油勘探开发研究院, 北京100083

SINOPEC Exploration And Production Researching Institute, Beijing 100083, China

鄂尔多斯盆地是典型的克拉通盆地,具有构造平缓,储层埋藏深(2500m以下)、地层薄(砂岩单层厚度一般小于10m)、砂泥岩叠置、横向变化大等特点,储层预测比较困难。为此,利用地震综合解释技术和高精度储层综合预测技术对鄂尔多斯盆地定北区块进行了储层描述。精细刻画了目的层的构造,落实了上古生界区域及局部构造位置,评价了目的层段砂体空间展布及厚度变化,预测了砂体富集区和含气性。

As a typical Clatonic basin, Ordos basin has its special characteristics, such as gentle structure, deep reservoir, overlapped sand andmud, thin bed and sharp lateral variation, etc.Taking into account these structure characteristics, reservoir description has been completed by using horizon calibration, synthetic utilization of seismic attributes analysis and variable velocity imaging technique.The structure of target layers is finely interpreted, local and regional structure spot is realized, the spatial distribution and thickness variation of sand body in target group is evaluated.