灰色系统理论关联分析法在储层评价中的应用——以延吉盆地大砬子组2段为例

Application of grey system theory correlation method in reservoir evaluation:Taking
the 2nd Member of Dalazi Formation in Yanji Basin as an example

宋土顺¹ 刘立¹ 于淼¹ 张吉光²

吉林大学地球科学学院，吉林 长春 130061 中国石油大庆油田有限责任公司勘探事业部，黑龙江 大庆 163453

在低孔、低渗背景下寻找相对优质储层，对油气勘探具有重要意义。文中运用灰色理论对储层进行综合评价，以延吉盆地大砬子组2段为例，在前人研究成果的基础上增加了胶结物质量分数和砂地比等参数，对储层进行综合定量评价。研究结果表明，区内发育Ⅱ，Ⅲ类储层。其中：Ⅱ类储层为相对较好的储层, 占沉积单元总数的53%, 主要分布在朝阳川凹陷；Ⅲ类储层为该区相对较差的储层, 占沉积单元总数的47%, 主要分布在清茶馆?鄄德新凹陷。

Looking for the relatively high quality reservoir has an important significance for oil and gas exploration in the context of low porosity and permeability. This paper comprehensively evaluates the reservoir using the gray theory. On the basis of the previous studies, the content of cement and sand to formation parameters are added. Then, taking the 2nd Member of Dalazi Formation in Yanji Basin as an example, a comprehensive quantitative evaluation of reservoir is conducted. Study shows that in the study area, Class II and Class Ⅲ reservoirs develop. In them, Class Ⅱ reservoirs are good reservoirs, which account for 53% of the total numbers of sedimentary units and mainly locate in Chaoyangchuang Depression. Class Ⅲ reservoirs are relatively poor reservoirs in this area, which account for 47% of the total numbers of sedimentary units and mainly locate in Qingchaguan-Dexin Depression.

10.6056/dkyqt201206008