春光油田沙湾组疏松砂岩油藏出砂规律  

Sand production regularity of unconsolidated sandstone reservoir in Shawan formation of Chunguang oilfield

作　　者：李春云[1] 刘洪涛[1] 解勇珍 毛为成[1] 李洲[1] 李晓平[1] LI Chunyun;LIU Hongtao;XIE Yongzhen;MAO Weicheng;LI Zhou;LI Xiaoping(Petroleum Engineering Technology Research Institute of Henan Oilfield Company,SINOPEC,Nanyang,Henan 473132,China)

机构地区：[1]中国石化河南油田分公司石油工程技术研究院,河南南阳473132

出　　处：《石油地质与工程》2020年第5期118-122,共5页Petroleum Geology and Engineering

摘　　要：春光油田新近系沙湾组储层胶结疏松,易出砂,且随储层含水上升,出砂加剧。通过持续跟踪不同时间、不同含水阶段储层出砂情况,分析了储层动态出砂原因;并利用综合疏松指数对储层岩石胶结类型进行细分,明确了沙湾组不同单元的出砂机理和出砂规律。同时,根据砂岩油藏类蚯蚓洞和连续垮塌两种微观出砂机理,考虑储层非均质性,建立了沙湾组砂岩油藏岩石颗粒的受力模型和储层出砂过程的微观动态模型,明确了研究区出砂机理以类蚯蚓洞状为主,呈现明显的纵向及平面非均质性,为防砂工艺参数优化提供依据。In Chunguang oilfield, the reservoir from Neogene Shawan formation is easy to produce sand due to the unconsolidated sandstone. With the increase of reservoir water content, the sand production is intensified. By continuously tracking the sand production in different time and under different water cut stages, the dynamic reasons of sand production are analyzed. The comprehensive loose index is used to subdivide the cementation types of reservoir rocks, and the mechanism and regularity of sand production in different units of Shawan formation are clarified. At the same time, according to two kinds of micro sand production mechanism of the sandstone reservoir, by taking the reservoir heterogeneity into consideration, the stress model and micro dynamic model of sand production process of Shawan formation are established. It is clear that the main sand production mechanism is like earthworm holes, showing obvious vertical and horizontal heterogeneity, which provides basis for the optimization of sand control process parameters.

关 键 词：春光油田 沙湾组 综合疏松指数 出砂机理 出砂形态 疏松砂岩油藏 

分 类 号：TE343[石油与天然气工程—油气田开发工程]