揭片法在中坝须二气藏三维描述中的应用

APPLICATION OF PEELING METHOD TO 3-D DESCRIPTION IN XU-2 RDSERVOLR

储层三维数据体和剖面数据体的生成是储层三维定量描述的技术关键之一。由于储层离散数据多以单井纵向线状分布，属奇型分布，各种三维内插法均不适于这样的离散数据。本文运用揭片法，在四川西北部的中坝气田须二气藏成功地进行了储层三维描述，建立了三维物性数据体，并进行了剖面描述、储渗体三维追踪和储量分类计算，解决了纵向线状分布离散数据的三维网格化技术问题。此法以单井储层描述为基础，以储层顶界面为准，向下依次揭片描述储层物性平面分布，由此形成三维数据体和剖面数据体，其计算方便，考虑信息多，工作量小，描述精确，思路符合层序地层学理论，是储层三维描述的一种实用方法。

By the use of peeling method, the reservoir 3-d description in Zhongba Xu-2 gas pool in northwest part of Sichuan is successfully done. The 3-D datum body is set up, the profile description, reservoir 3-D tracing and reserve classfy compution are conducted to solve the 3-D grid technological problem of discrete data contributing vertically and lineally. Taking single well reservoir description and reservoir top interface as benchmark, the plane contribution of reservoir physical property is described in proper order from top to bottom by peeling method to form 3-D data body and profile data body. It has the characteristics of computing easily, considering informations more, having fewer jobs, describing precisely, tallying with the theory of sequence stratigraphy etc and is a practical method for reservoir 3-D description.