宝浪油田储层夹隔层特征及储层非均质性研究

焉耆盆地宝浪油田三工河组为浅水缓坡型辫状河三角洲沉积，储层非均质性强。通过河道类型分析，运用沉积旋回原理划分出4个退积式叠置的短期旋回。不同沉积旋回导致河道类型、砂体规模、夹层分布、储层厚度、砂体拼接方式等非均质特征呈规律性变化，可容空间变化引起储层非均质改变。夹层的成因、类型、分布特点是造成该区储层严重非均质的主要原因。准确认识砂体叠置关系及储层夹隔层特征有助于提高油田的开发水平，对提高最终采收率具有现实意义。

STUDY ON THE CHARACTERISTICS OF INTERLAYERS AND RESERVOIR HETEROGENEITY OF BAOLANG OILFIELD

Jurassic Sangonghe formation of Baolang Oilfield belongs to shallow water and gentle slope braid deltaic deposition，and it has strong heterogeneity.It can be divided into four retrograding overlying short-term cycles by analysing the channel types and sedimentary cycles.Different sedimentary cycles can result in regular changes in channel types，reservoir thicknesses，sandbody sizes interlayer distributions and sandbody connecting methods etc.The changes of interspace can lead to the changing of reservoir macroscopic heterogeneity.The interlayer′s type，origin and pattern are the main reasons for the extreme heterogeneity.A good understanding of the reservoir macroscopic heterogeneity could enhance the exploitation level of oilfield and the final recovery efficiency.