王场油田沉积相特征与相模式

Facies Analysis and Sedimentary Model of Wangchang Oil Field

王场油田主力油层是一套深水盐间砂砾岩储层。经过多年的开发,其已进入高含水阶段,然而沉积相研究一直没有深入进行。本文基于测井资料,对该区的沉积相进行了分析,认为其沉积分属沟道化非沟道化浊积岩,发育有浊积沟道、沟道侧翼、溢岸砂等砂体。其中,主力的潜433小层为沟道化沉积,分布广,厚度大,潜力较大,而431小层为非沟道化浊积岩,分布局限,潜力较小。

The main oil layer of Wangchang Oil Field is a set of deep-water sandstone reservoirs interlayered with salts.After tens of years of development,it has entered the high water cut stage,however,sedimentation research has not been carried out deeply.Based on the logging data,this paper analyzes the sedimentary facies in this area,and believed that its sediments belonged to channelized and non-channelized turbidite rocks,with sand bodies such as turbidity channels,channel flanks,and bank sand.Among them,the main latent 433 layer is channelized deposition,which has a wide distribution,large thickness,and large potential,while the 431 small layer is non-channelized turbidite,which has a limited layout and small potential.