[1]许跃,许洪祝,周启立,等.致密气压裂返排液及生产水处理耦合工程优化[J].中国给水排水,2025,41(6):117-121.
　XUYue,XU Hong-zhu,ZHOUQi-li,et al.Optimization of Coupled Tight Gas Fracturing Flowback Fluid and Production Water Treatment Project[J].China Water & Wastewater,2025,41(6):117-121.
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致密气压裂返排液及生产水处理耦合工程优化

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第6期 页码: 117-121 栏目: 出版日期: 2025-03-17
Title:
Optimization of Coupled Tight Gas Fracturing Flowback Fluid and Production Water Treatment Project
作者:
许跃， 许洪祝， 周启立， 陆彩霞， 史金卓， 刘洋
（中海油天津化工研究设计院有限公司，天津 300131）
Author(s):
XU　Yue， XU Hong-zhu， ZHOU　Qi-li， LU　Cai-xia， SHI　Jin-zhuo， LIU　Yang
（CNOOC Tianjin Chemical Research and Design Institute Co. Ltd.， Tianjin 300131， China）
关键词:
致密气;  压裂返排液;  生产水;  技术改造;  工艺优化
Keywords:
tight gas;  fracturing flowback fluid;  production water;  technical transformation;  process optimization
摘要:
临兴中区LX-156水处理站处理规模为480 m3/d，原采用“调节/涡凹气浮/多介质过滤/精细过滤”处理工艺。为满足生产建设要求及解决工艺运行不稳定等问题，该水处理站改造后处理规模提升至1 080 m3/d，根据压裂返排液及生产水水质特点，采用“预处理/一体化破胶/涡凹气浮/高密度斜管沉降/保安过滤/精细过滤”耦合工艺。该工程采用一体化撬装式设备进行原位扩容，在破胶脱稳30 min，气浮处理24 min，高密度斜管沉降器投加PAC 300 mg/L、PAM 15 mg/L、NaOH 800 mg/L的条件下，整个工艺稳定运行128 d，处理达标回注水125 435 m3，出水关键指标含油量≤30 mg/L、悬浮物≤10 mg/L、颗粒直径中值≤4 μm，满足《碎屑岩油藏注水水质推荐指标及分析方法》（SY/T 5329—2012）的高渗透率油层回注水水质标准。
Abstract:
The LX-156 water treatment station in Linxing Central District with treatment capacity of 480 m3/d, originally adopted the treatment process of conditioning/turbulent air flotation/multi-media filtration/fine filtration. To satisfy the production construction requirements and solve the process instability problem, the capacity of the water treatment station was increased to 1 080 m3/d after renovation. According to the characteristics of fracturing flowback fluid and production water quality, the coupled process of pretreatment/integrated rubber breaker/vortex concave air flotation/high-density sedimentation/security filtration/fine filtration was adopted. In?situ capacity is expanded using integrated skid-mounted equipment. By breaking and destabilizing for 30 min, air flotation treatment for 24 min, as well as adding PAC of 300 mg/L, PAM of 15 mg/L, and NaOH of 800 mg/L in high density sedimentation, 125 435 m3 of refill water was treated up to the standard after operated stably for 128 days. The key effluent indexes include oil content ≤30 mg/L, suspended solids concentration ≤10 mg/L, and diameter median of suspended solids ≤4 μm, which met the water quality standards for reinjection water from high permeability oil reservoirs in Water Quality Standard and Practice for Analysis of Oilfield Injecting Waters in Clastic Reservoirs (SY/T 5329-2012).
更新日期/Last Update: 2025-03-17