摘要
提出了储层流动单元"两步"法的研究新思路,并以江苏码头庄油田为例进行了尝试性的研究工作。在储层流动单元划分时,首先根据稳定的泥岩和含泥粉砂岩隔夹层的分布划分连通单元,然后对影响流体流动的储层特征参数进行聚类分析,并划分流动单元。通过对码头庄油田砂岩含油层系隔夹层的研究,可将储层划分为3个砂组和12个连通单元。码头庄油田有8个储层参数与日产油和吸水强度的关系密切,因而用这8个参数进行聚类分析划分出4类流动单元:E型、G型、F型、P型,它们的储层质量依次变差。把这8个储层参数经线性组合成一个综合参数———FU来作为综合判别流动单元类型的指标。码头庄油田油层内部流动单元的分布形式复杂,各种类型流动单元相间分布,流动单元的形状多呈条带状,沿北西—南东向延伸。流动单元的分布与沉积微相的分布和基准面旋回有关。流动单元的储层质量越好,其水淹状况越严重;流动单元的储层质量越差,其水淹状况越弱。平面上,流动单元的分布控制了边水和注入水的流动方向及水淹的分带性。
A new research idea of'two steps'is advanced and tentatively applied to the Matouzhuang oil field,Jiangsu Province.Firstly the connected units of reservoir are compartmentalized depending on the distribution of the interlayers made of mudstone or muddy siltstone,and then the flow units of reservoir are divided using clustering analysis on the characteristic parameters of reservoir that influence the flow of fluid.The oilbearing sandstone series of the Matouzhuang oil field has three sand sets and twelve connected units. Eight parameters have close relationships with the production level and injection level.Therefore, they are used to do the clustering analysis and four types of the flow units,those are E,G,F and P, are divided. Their reservoir qualities get worse successively. As an assembled parameter, FU is an indicator to identify the flow units.The distribution of the flow units is complex and studded, and the shapes of the flow units are stripy along the northwestsoutheast of the Matouzhuang oil field. The distribution of the flow units is related to the microfacies and baselevel cycle. The finer the reservoir quality is, the stronger the waterflooding of the flow unit is. The distribution of the flow units controls the aquifer encroachment and waterflood directions and waterflood zoning.
出处
《现代地质》
CAS
CSCD
2003年第3期331-336,共6页
Geoscience
基金
中国石油化工股份有限公司"九五"攻关项目(P98026-1)。
关键词
流动单元
连通单元
油藏表征
码头庄油田
江苏
flow unit
connected unit
reservoir characterization
the Matouzhuang oil field
Jiangsu Province
