微型构造表征技术在八面河油田的应用

The appli-cation of characterization technique of reservoir microstructure to Bamianhe oilfield.

通过对八面河油田井网密集区及井网稀疏的欠开发区的微构造研究,探讨了微构造表征技术.首先在储层多层次逐级对比的基础上,建立主力油层对比关系;密集井网条件下,则利用钻井资料编制油层顶底微型构造图;对于欠开发地区,通过人机联作自动追踪成图技术,输出2m等值线间隔构造图,建立微构造模型.以微构造模型为基础进行潜力评价,部署关键井寻找优质储量或进行开发动态调整.应用该项技术在八面河油田滚动发现了角15块等断鼻翼部局部高点,增加石油地质储量488×104t.

Characterization technique of microstructure is discussed based on the microstructure study of the dense well spacing area and under-exploited area with wide-spaced wells. Firstly, the correlation relationship between main reservoirs is established on the basis of reservoir correlation by multiple levels and step by step. A set of microstructure maps of reservoir bottom and reservoir top is made using the drilling data in the area of dense well spacing. However, to the under exploited area, the structural contour maps with 2 meters intervals and the microstructure model are obtained by using the man -computer interaction automatic tracing mapping technique. In order to find high quality reserves or adjust development performance, resource potential evaluation and key well deployment are taken with the microstructure model. In case study of limb of nose in the Bamianhe oilfield, this technique is applied in discovering local high points in the limb of the structural nose such as Block Jiao 15, and increasing OOIP of 488 × 104t.