油田含聚废液处理及再利用技术研究  

Oilfield Polymer-Bearing Waste Liquid Treatment and Reuse Technology

作　　者：袁杰[1] Yuan Jie(Sinopec Shengli Oilfield Company)

机构地区：[1]中国石化胜利油田分公司

出　　处：《石油机械》2024年第7期114-122,共9页China Petroleum Machinery

基　　金：中国石油化工集团有限公司科学技术研究项目“含聚废液资源化调剖利用技术”(317013-3)。

摘　　要：近年来虽然对聚合物驱油藏油水井洗井、作业及站内管线清洗产生的含聚废液开展了回收再利用技术研究,但缺乏聚合物胶块废液的有效处理技术。为此,结合注聚区废液的特点,研究相应的处理技术,确定注聚区废液的调剖用配方,并针对不同废液改进调剖注入工艺,形成注聚区废液调剖再利用技术。研究结果表明:研制的橇装式含聚废液地面分离及处理装置能够有效分离废液中的胶块,对其进行粉碎处理后,形成颗粒调剖剂,进而实现单井直接注入;结合含聚废液特点,研发了相应的复配调剖剂配方,形成了调剖剂系列,达到了封堵高渗透油藏堵剂要求;现场实施调剖21口井,累计处理废液51 978 m^(3),油压平均上升了1.5 MPa,累计增油达8 036.2 t。研究结果可为油田清洁环保开发生产提供技术依据。In recent years,although research has been conducted on the recovery and reuse of polymer-bearing waste liquid generated from well flushing,operation and instation pipeline washing of polymer flooding reservoirs,there is a lack of effective treatment technology for polymer colloidal block waste liquid.Based on the characteristics of the waste liquid in the polymer injection area,corresponding treatment technologies were studied,the formula of the waste liquid in the polymer injection area used for profile control was determined,and the profile control injection process was improved for different waste liquids,forming a profile control and reuse technology of the waste liquid in the polymer injection area.The research results show that the developed skid mounted ground separation and treatment device for polymer-bearing waste liquid can effectively separate the colloidal blocks in the waste liquid,crush them,form particulate profile control agents,and then achieve direct injection into a single well;based on the characteristics of polymer-bearing waste liquid,corresponding compound profile control agent formulas have been developed,forming a series of profile control agents,which meet the requirements for plugging high permeability reservoirs.Profile control is conducted in 21 wells,a total of 51978 m^(3) of waste liquid has been treated,the tubing pressure has increased by 1.5 MPa averagely,and a total of 8036.2 t of incremental oil has been produced.The research conclusions provide technical basis for the clean and environmentally friendly development and production of oilfields.

关 键 词：含聚废液 调剖 聚合物胶块 冻胶堵剂 除砂 油田废液处理 

分 类 号：TE992[石油与天然气工程—石油机械设备]