摘要
渤海SZ36-1油田处于注水开采初期,油井产量较高,由于流度比大、原油粘度高等导致油井注入水突破而迅速见水,现已进入三采阶段。考虑到不影响井的生产和尽量避免对油井作业,决定对注水井进行注聚来增产原油,降低产水效果。SZ36-1油田原油粘度高,层间纵向渗透率差异大,地层非均质性极强,注水井的吸水剖面不均,水窜严重,必须首先优选注聚调剖井层。结合注聚井层优选标准和SZ36-1注水井的实际生产情况,进行了注聚调剖的选井选层依据分析,并优选了井层。
SZ36-1 Oilfield with unconsolidated oil layers and high oil viscosity is of large accumulative thickness and low reservoir temperature.Although in the early production period,SZ36-1 field has stepped into the ternary production stage for the water breakthrough caused by high mobility ratio and high oil viscosity.Synthetically considering various factors,polymer flooding is recommended and optimization in profile improvement must be conducted first for the distinct difference of layer-layer permeability,severe heterogeneity as well as uneven water-injection profile.Integrating selection criterion of polymer-injected well with actual producing performance,well-section gist is analyzed and treated wells and/or layers are determined.
出处
《断块油气田》
CAS
2006年第1期42-43,共2页
Fault-Block Oil & Gas Field
关键词
水突破
聚合物驱
注水剖面
调剖
优选
Water breakthrough,Polymer flooding,Water injection profile,Profile improvement,Optimization.
